CodeDomProvider Classe

Definição

Fornece uma classe base para implementações CodeDomProvider.Provides a base class for CodeDomProvider implementations. Esta classe é abstrata.This class is abstract.

public ref class CodeDomProvider abstract : System::ComponentModel::Component
[System.Runtime.InteropServices.ComVisible(true)]
public abstract class CodeDomProvider : System.ComponentModel.Component
type CodeDomProvider = class
    inherit Component
Public MustInherit Class CodeDomProvider
Inherits Component
Herança
Derivado
Atributos

Exemplos

O programa de exemplo a seguir pode gerar e compilar o código-fonte com base em um modelo de CodeDom de um programa que Console imprime "Olá, mundo" usando a classe.The following example program can generate and compile source code based on a CodeDOM model of a program that prints "Hello World" using the Console class. Uma interface do usuário Windows Forms é fornecida.A Windows Forms user interface is provided. O usuário pode selecionar a linguagem de programação de destino de várias seleções: C#, Visual Basic e JScript.The user can select the target programming language from several selections: C#, Visual Basic, and JScript.

#using <System.Windows.Forms.dll>
#using <System.Drawing.dll>
#using <System.dll>
#using <Microsoft.JScript.dll>

using namespace System;
using namespace System::CodeDom;
using namespace System::CodeDom::Compiler;
using namespace System::Collections;
using namespace System::ComponentModel;
using namespace System::Diagnostics;
using namespace System::Drawing;
using namespace System::IO;
using namespace System::Windows::Forms;
using namespace Microsoft::CSharp;
using namespace Microsoft::VisualBasic;
using namespace Microsoft::JScript;
using namespace System::Security::Permissions;

// This example demonstrates building a Hello World program graph 
// using System.CodeDom elements. It calls code generator and
// code compiler methods to build the program using CSharp, VB, or
// JScript.  A Windows Forms interface is included. Note: Code
// must be compiled and linked with the Microsoft.JScript assembly. 
namespace CodeDOMExample
{
    [PermissionSet(SecurityAction::Demand, Name="FullTrust")]
    public ref class CodeDomExample
    {
    public:
        // Build a Hello World program graph using 
        // System::CodeDom types.
        static CodeCompileUnit^ BuildHelloWorldGraph()
        {
            // Create a new CodeCompileUnit to contain 
            // the program graph.
            CodeCompileUnit^ compileUnit = gcnew CodeCompileUnit;

            // Declare a new namespace called Samples.
            CodeNamespace^ samples = gcnew CodeNamespace( "Samples" );

            // Add the new namespace to the compile unit.
            compileUnit->Namespaces->Add( samples );

            // Add the new namespace import for the System namespace.
            samples->Imports->Add( gcnew CodeNamespaceImport( "System" ) );

            // Declare a new type called Class1.
            CodeTypeDeclaration^ class1 = gcnew CodeTypeDeclaration( "Class1" );

            // Add the new type to the namespace's type collection.
            samples->Types->Add( class1 );

            // Declare a new code entry point method.
            CodeEntryPointMethod^ start = gcnew CodeEntryPointMethod;

            // Create a type reference for the System::Console class.
            CodeTypeReferenceExpression^ csSystemConsoleType = gcnew CodeTypeReferenceExpression( "System.Console" );

            // Build a Console::WriteLine statement.
            CodeMethodInvokeExpression^ cs1 = gcnew CodeMethodInvokeExpression( csSystemConsoleType,"WriteLine", gcnew CodePrimitiveExpression("Hello World!") );

            // Add the WriteLine call to the statement collection.
            start->Statements->Add( cs1 );

            // Build another Console::WriteLine statement.
            CodeMethodInvokeExpression^ cs2 = gcnew CodeMethodInvokeExpression( csSystemConsoleType,"WriteLine", gcnew CodePrimitiveExpression( "Press the Enter key to continue." ) );

            // Add the WriteLine call to the statement collection.
            start->Statements->Add( cs2 );

            // Build a call to System::Console::ReadLine.
            CodeMethodReferenceExpression^ csReadLine = gcnew CodeMethodReferenceExpression( csSystemConsoleType, "ReadLine" );
            CodeMethodInvokeExpression^ cs3 = gcnew CodeMethodInvokeExpression( csReadLine, gcnew array<CodeExpression^>(0) );

            // Add the ReadLine statement.
            start->Statements->Add( cs3 );

            // Add the code entry point method to
            // the Members collection of the type.
            class1->Members->Add( start );
            return compileUnit;
        }

        static void GenerateCode( CodeDomProvider^ provider, CodeCompileUnit^ compileunit )
        {
            // Build the source file name with the appropriate
            // language extension.
            String^ sourceFile;
            if ( provider->FileExtension->StartsWith( "." ) )
            {
                sourceFile = String::Concat( "TestGraph", provider->FileExtension );
            }
            else
            {
                sourceFile = String::Concat( "TestGraph.", provider->FileExtension );
            }

            // Create an IndentedTextWriter, constructed with
            // a StreamWriter to the source file.
            IndentedTextWriter^ tw = gcnew IndentedTextWriter( gcnew StreamWriter( sourceFile,false ),"    " );

            // Generate source code using the code generator.
            provider->GenerateCodeFromCompileUnit( compileunit, tw, gcnew CodeGeneratorOptions );

            // Close the output file.
            tw->Close();
        }

        static CompilerResults^ CompileCode( CodeDomProvider^ provider, String^ sourceFile, String^ exeFile )
        {
            // Configure a CompilerParameters that links System.dll
            // and produces the specified executable file.
            array<String^>^referenceAssemblies = {"System.dll"};
            CompilerParameters^ cp = gcnew CompilerParameters( referenceAssemblies,exeFile,false );

            // Generate an executable rather than a DLL file.
            cp->GenerateExecutable = true;

            // Invoke compilation.
            CompilerResults^ cr = provider->CompileAssemblyFromFile( cp, sourceFile );

            // Return the results of compilation.
            return cr;
        }
    };

    public ref class CodeDomExampleForm: public System::Windows::Forms::Form
    {
    private:
        static System::Windows::Forms::Button^ run_button = gcnew System::Windows::Forms::Button;
        static System::Windows::Forms::Button^ compile_button = gcnew System::Windows::Forms::Button;
        static System::Windows::Forms::Button^ generate_button = gcnew System::Windows::Forms::Button;
        static System::Windows::Forms::TextBox^ textBox1 = gcnew System::Windows::Forms::TextBox;
        static System::Windows::Forms::ComboBox^ comboBox1 = gcnew System::Windows::Forms::ComboBox;
        static System::Windows::Forms::Label^ label1 = gcnew System::Windows::Forms::Label;
        void generate_button_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
        {
            CodeDomProvider^ provider = GetCurrentProvider();
            CodeDomExample::GenerateCode( provider, CodeDomExample::BuildHelloWorldGraph() );

            // Build the source file name with the appropriate
            // language extension.
            String^ sourceFile;
            if ( provider->FileExtension->StartsWith( "." ) )
            {
                sourceFile = String::Concat( "TestGraph", provider->FileExtension );
            }
            else
            {
                sourceFile = String::Concat( "TestGraph.", provider->FileExtension );
            }


            // Read in the generated source file and
            // display the source text.
            StreamReader^ sr = gcnew StreamReader( sourceFile );
            textBox1->Text = sr->ReadToEnd();
            sr->Close();
        }

        CodeDomProvider^ GetCurrentProvider()
        {
            CodeDomProvider^ provider;
            if ( String::Compare( dynamic_cast<String^>(this->comboBox1->SelectedItem), "CSharp" ) == 0 )
                provider = CodeDomProvider::CreateProvider("CSharp");
            else
                if ( String::Compare( dynamic_cast<String^>(this->comboBox1->SelectedItem), "Visual Basic" ) == 0 )
                    provider = CodeDomProvider::CreateProvider("VisualBasic");
                else
                    if ( String::Compare( dynamic_cast<String^>(this->comboBox1->SelectedItem), "JScript" ) == 0 )
                        provider = CodeDomProvider::CreateProvider("JScript");
                    else
                        provider = CodeDomProvider::CreateProvider("CSharp");

            return provider;
        }

        void compile_button_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
        {
            CodeDomProvider^ provider = GetCurrentProvider();

            // Build the source file name with the appropriate
            // language extension.
            String^ sourceFile = String::Concat( "TestGraph.", provider->FileExtension );

            // Compile the source file into an executable output file.
            CompilerResults^ cr = CodeDomExample::CompileCode( provider, sourceFile, "TestGraph.exe" );
            if ( cr->Errors->Count > 0 )
            {
                // Display compilation errors.
                textBox1->Text = String::Concat( "Errors encountered while building ", sourceFile, " into ", cr->PathToAssembly, ": \r\n\n" );
                System::CodeDom::Compiler::CompilerError^ ce;
                for ( int i = 0; i < cr->Errors->Count; i++ )
                {
                    ce = cr->Errors[i];
                    textBox1->AppendText( String::Concat( ce->ToString(), "\r\n" ) );

                }
                run_button->Enabled = false;
            }
            else
            {
                textBox1->Text = String::Concat( "Source ", sourceFile, " built into ", cr->PathToAssembly, " with no errors." );
                run_button->Enabled = true;
            }
        }

        void run_button_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
        {
            Process::Start( "TestGraph.exe" );
        }

    public:
        CodeDomExampleForm()
        {
            this->SuspendLayout();

            // Set properties for label1.
            this->label1->Location = System::Drawing::Point( 395, 20 );
            this->label1->Size = System::Drawing::Size( 180, 22 );
            this->label1->Text = "Select a programming language:";

            // Set properties for comboBox1.
            this->comboBox1->Location = System::Drawing::Point( 560, 16 );
            this->comboBox1->Size = System::Drawing::Size( 190, 23 );
            this->comboBox1->Name = "comboBox1";
            array<String^>^temp1 = {"CSharp","Visual Basic","JScript"};
            this->comboBox1->Items->AddRange( temp1 );
            this->comboBox1->Anchor = (System::Windows::Forms::AnchorStyles)(System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right | System::Windows::Forms::AnchorStyles::Top);
            this->comboBox1->SelectedIndex = 0;

            // Set properties for generate_button.
            this->generate_button->Location = System::Drawing::Point( 8, 16 );
            this->generate_button->Name = "generate_button";
            this->generate_button->Size = System::Drawing::Size( 120, 23 );
            this->generate_button->Text = "Generate Code";
            this->generate_button->Click += gcnew System::EventHandler( this, &CodeDomExampleForm::generate_button_Click );

            // Set properties for compile_button.
            this->compile_button->Location = System::Drawing::Point( 136, 16 );
            this->compile_button->Name = "compile_button";
            this->compile_button->Size = System::Drawing::Size( 120, 23 );
            this->compile_button->Text = "Compile";
            this->compile_button->Click += gcnew System::EventHandler( this, &CodeDomExampleForm::compile_button_Click );

            // Set properties for run_button.
            this->run_button->Enabled = false;
            this->run_button->Location = System::Drawing::Point( 264, 16 );
            this->run_button->Name = "run_button";
            this->run_button->Size = System::Drawing::Size( 120, 23 );
            this->run_button->Text = "Run";
            this->run_button->Click += gcnew System::EventHandler( this, &CodeDomExampleForm::run_button_Click );

            // Set properties for textBox1.
            this->textBox1->Anchor = (System::Windows::Forms::AnchorStyles)(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right);
            this->textBox1->Location = System::Drawing::Point( 8, 48 );
            this->textBox1->Multiline = true;
            this->textBox1->ScrollBars = System::Windows::Forms::ScrollBars::Vertical;
            this->textBox1->Name = "textBox1";
            this->textBox1->Size = System::Drawing::Size( 744, 280 );
            this->textBox1->Text = "";

            // Set properties for the CodeDomExampleForm.
            this->AutoScaleBaseSize = System::Drawing::Size( 5, 13 );
            this->ClientSize = System::Drawing::Size( 768, 340 );
            this->MinimumSize = System::Drawing::Size( 750, 340 );
            array<System::Windows::Forms::Control^>^myControl = {this->textBox1,this->run_button,this->compile_button,this->generate_button,this->comboBox1,this->label1};
            this->Controls->AddRange( myControl );
            this->Name = "CodeDomExampleForm";
            this->Text = "CodeDom Hello World Example";
            this->ResumeLayout( false );
        }

    public:
        ~CodeDomExampleForm()
        {
        }
    };

}

[STAThread]
int main()
{
    Application::Run( gcnew CodeDOMExample::CodeDomExampleForm );
}
using System;
using System.CodeDom;
using System.CodeDom.Compiler;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Windows.Forms;
using Microsoft.CSharp;
using Microsoft.VisualBasic;
using Microsoft.JScript;

// This example demonstrates building a Hello World program graph 
// using System.CodeDom elements. It calls code generator and
// code compiler methods to build the program using CSharp, VB, or
// JScript.  A Windows Forms interface is included. Note: Code
// must be compiled and linked with the Microsoft.JScript assembly. 
namespace CodeDOMExample
{
    class CodeDomExample
    {
        // Build a Hello World program graph using 
        // System.CodeDom types.
        public static CodeCompileUnit BuildHelloWorldGraph()
        {
            // Create a new CodeCompileUnit to contain 
            // the program graph.
            CodeCompileUnit compileUnit = new CodeCompileUnit();

            // Declare a new namespace called Samples.
            CodeNamespace samples = new CodeNamespace("Samples");
            // Add the new namespace to the compile unit.
            compileUnit.Namespaces.Add(samples);

            // Add the new namespace import for the System namespace.
            samples.Imports.Add(new CodeNamespaceImport("System"));

            // Declare a new type called Class1.
            CodeTypeDeclaration class1 = new CodeTypeDeclaration("Class1");
            // Add the new type to the namespace type collection.
            samples.Types.Add(class1);

            // Declare a new code entry point method.
            CodeEntryPointMethod start = new CodeEntryPointMethod();

            // Create a type reference for the System.Console class.
            CodeTypeReferenceExpression csSystemConsoleType = new CodeTypeReferenceExpression("System.Console");

            // Build a Console.WriteLine statement.
            CodeMethodInvokeExpression cs1 = new CodeMethodInvokeExpression(
                csSystemConsoleType, "WriteLine",
                new CodePrimitiveExpression("Hello World!"));

            // Add the WriteLine call to the statement collection.
            start.Statements.Add(cs1);

            // Build another Console.WriteLine statement.
            CodeMethodInvokeExpression cs2 = new CodeMethodInvokeExpression(
                csSystemConsoleType, "WriteLine",
                new CodePrimitiveExpression("Press the Enter key to continue."));

            // Add the WriteLine call to the statement collection.
            start.Statements.Add(cs2);

            // Build a call to System.Console.ReadLine.
            CodeMethodInvokeExpression csReadLine = new CodeMethodInvokeExpression(
                csSystemConsoleType, "ReadLine");

            // Add the ReadLine statement.
            start.Statements.Add(csReadLine);

            // Add the code entry point method to
            // the Members collection of the type.
            class1.Members.Add(start);

            return compileUnit;
        }

        public static void GenerateCode(CodeDomProvider provider,
            CodeCompileUnit compileunit)
        {
            // Build the source file name with the appropriate
            // language extension.
            String sourceFile;
            if (provider.FileExtension[0] == '.')
            {
                sourceFile = "TestGraph" + provider.FileExtension;
            }
            else
            {
                sourceFile = "TestGraph." + provider.FileExtension;
            }

            // Create an IndentedTextWriter, constructed with
            // a StreamWriter to the source file.
            IndentedTextWriter tw = new IndentedTextWriter(new StreamWriter(sourceFile, false), "    ");
            // Generate source code using the code generator.
            provider.GenerateCodeFromCompileUnit(compileunit, tw, new CodeGeneratorOptions());
            // Close the output file.
            tw.Close();
        }

        public static CompilerResults CompileCode(CodeDomProvider provider,
                                                  String sourceFile,
                                                  String exeFile)
        {
            // Configure a CompilerParameters that links System.dll
            // and produces the specified executable file.
            String[] referenceAssemblies = { "System.dll" };
            CompilerParameters cp = new CompilerParameters(referenceAssemblies,
                                                           exeFile, false);
            // Generate an executable rather than a DLL file.
            cp.GenerateExecutable = true;

            // Invoke compilation.
            CompilerResults cr = provider.CompileAssemblyFromFile(cp, sourceFile);
            // Return the results of compilation.
            return cr;
        }
    }

    public class CodeDomExampleForm : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Button run_button = new System.Windows.Forms.Button();
        private System.Windows.Forms.Button compile_button = new System.Windows.Forms.Button();
        private System.Windows.Forms.Button generate_button = new System.Windows.Forms.Button();
        private System.Windows.Forms.TextBox textBox1 = new System.Windows.Forms.TextBox();
        private System.Windows.Forms.ComboBox comboBox1 = new System.Windows.Forms.ComboBox();
        private System.Windows.Forms.Label label1 = new System.Windows.Forms.Label();

        private void generate_button_Click(object sender, System.EventArgs e)
        {
            CodeDomProvider provider = GetCurrentProvider();
            CodeDomExample.GenerateCode(provider, CodeDomExample.BuildHelloWorldGraph());

            // Build the source file name with the appropriate
            // language extension.
            String sourceFile;
            if (provider.FileExtension[0] == '.')
            {
                sourceFile = "TestGraph" + provider.FileExtension;
            }
            else
            {
                sourceFile = "TestGraph." + provider.FileExtension;
            }

            // Read in the generated source file and
            // display the source text.
            StreamReader sr = new StreamReader(sourceFile);
            textBox1.Text = sr.ReadToEnd();
            sr.Close();
        }

        private void compile_button_Click(object sender, System.EventArgs e)
        {
            CodeDomProvider provider = GetCurrentProvider();

            // Build the source file name with the appropriate
            // language extension.
            String sourceFile;
            if (provider.FileExtension[0] == '.')
            {
                sourceFile = "TestGraph" + provider.FileExtension;
            }
            else
            {
                sourceFile = "TestGraph." + provider.FileExtension;
            }

            // Compile the source file into an executable output file.
            CompilerResults cr = CodeDomExample.CompileCode(provider,
                                                            sourceFile,
                                                            "TestGraph.exe");

            if (cr.Errors.Count > 0)
            {
                // Display compilation errors.
                textBox1.Text = "Errors encountered while building " +
                                sourceFile + " into " + cr.PathToAssembly + ": \r\n\n";
                foreach (CompilerError ce in cr.Errors)
                    textBox1.AppendText(ce.ToString() + "\r\n");
                run_button.Enabled = false;
            }
            else
            {
                textBox1.Text = "Source " + sourceFile + " built into " +
                                cr.PathToAssembly + " with no errors.";
                run_button.Enabled = true;
            }
        }

        private void run_button_Click(object sender,
            System.EventArgs e)
        {
            Process.Start("TestGraph.exe");
        }

        private CodeDomProvider GetCurrentProvider()
        {
            CodeDomProvider provider;
            switch ((string)this.comboBox1.SelectedItem)
            {
                case "CSharp":
                    provider = CodeDomProvider.CreateProvider("CSharp");
                    break;
                case "Visual Basic":
                    provider = CodeDomProvider.CreateProvider("VisualBasic");
                    break;
                case "JScript":
                    provider = CodeDomProvider.CreateProvider("JScript");
                    break;
                default:
                    provider = CodeDomProvider.CreateProvider("CSharp");
                    break;
            }
            return provider;
        }

        public CodeDomExampleForm()
        {
            this.SuspendLayout();
            // Set properties for label1
            this.label1.Location = new System.Drawing.Point(395, 20);
            this.label1.Size = new Size(180, 22);
            this.label1.Text = "Select a programming language:";
            // Set properties for comboBox1
            this.comboBox1.Location = new System.Drawing.Point(560, 16);
            this.comboBox1.Size = new Size(190, 23);
            this.comboBox1.Name = "comboBox1";
            this.comboBox1.Items.AddRange(new string[] { "CSharp", "Visual Basic", "JScript" });
            this.comboBox1.Anchor = System.Windows.Forms.AnchorStyles.Left
                                    | System.Windows.Forms.AnchorStyles.Right
                                    | System.Windows.Forms.AnchorStyles.Top;
            this.comboBox1.SelectedIndex = 0;
            // Set properties for generate_button. 
            this.generate_button.Location = new System.Drawing.Point(8, 16);
            this.generate_button.Name = "generate_button";
            this.generate_button.Size = new System.Drawing.Size(120, 23);
            this.generate_button.Text = "Generate Code";
            this.generate_button.Click += new System.EventHandler(this.generate_button_Click);
            // Set properties for compile_button.
            this.compile_button.Location = new System.Drawing.Point(136, 16);
            this.compile_button.Name = "compile_button";
            this.compile_button.Size = new System.Drawing.Size(120, 23);
            this.compile_button.Text = "Compile";
            this.compile_button.Click += new System.EventHandler(this.compile_button_Click);
            // Set properties for run_button.
            this.run_button.Enabled = false;
            this.run_button.Location = new System.Drawing.Point(264, 16);
            this.run_button.Name = "run_button";
            this.run_button.Size = new System.Drawing.Size(120, 23);
            this.run_button.Text = "Run";
            this.run_button.Click += new System.EventHandler(this.run_button_Click);
            // Set properties for textBox1.        
            this.textBox1.Anchor = (System.Windows.Forms.AnchorStyles.Top
                                     | System.Windows.Forms.AnchorStyles.Bottom
                                     | System.Windows.Forms.AnchorStyles.Left
                                     | System.Windows.Forms.AnchorStyles.Right);
            this.textBox1.Location = new System.Drawing.Point(8, 48);
            this.textBox1.Multiline = true;
            this.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(744, 280);
            this.textBox1.Text = "";
            // Set properties for the CodeDomExampleForm.
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(768, 340);
            this.MinimumSize = new System.Drawing.Size(750, 340);
            this.Controls.AddRange(new System.Windows.Forms.Control[] {this.textBox1, 
                this.run_button, this.compile_button, this.generate_button,
                this.comboBox1, this.label1 });
            this.Name = "CodeDomExampleForm";
            this.Text = "CodeDom Hello World Example";
            this.ResumeLayout(false);
        }

        protected override void Dispose(bool disposing)
        {
            base.Dispose(disposing);
        }

        [STAThread]
        static void Main()
        {
            Application.Run(new CodeDomExampleForm());
        }
    }
}
Imports System.CodeDom
Imports System.CodeDom.Compiler
Imports System.Collections
Imports System.ComponentModel
Imports System.Diagnostics
Imports System.Drawing
Imports System.IO
Imports System.Windows.Forms
Imports Microsoft.CSharp
Imports Microsoft.JScript

' This example demonstrates building a Hello World program graph 
' using System.CodeDom elements. It calls code generator and
' code compiler methods to build the program using CSharp, VB, or
' JScript.  A Windows Forms interface is included. Note: Code
' must be compiled and linked with the Microsoft.JScript assembly. 
Namespace CodeDOMExample

    Class CodeDomExample
        ' Build a Hello World program graph using 
        ' System.CodeDom types.
        Public Shared Function BuildHelloWorldGraph() As CodeCompileUnit

            ' Create a new CodeCompileUnit to contain 
            ' the program graph.
            Dim compileUnit As New CodeCompileUnit()

            ' Declare a new namespace called Samples.
            Dim samples As New CodeNamespace("Samples")

            ' Add the new namespace to the compile unit.
            compileUnit.Namespaces.Add(samples)

            ' Add the new namespace import for the System namespace.
            samples.Imports.Add(New CodeNamespaceImport("System"))

            ' Declare a new type called Class1.
            Dim class1 As New CodeTypeDeclaration("Class1")

            ' Add the new type to the namespace type collection.
            samples.Types.Add(class1)

            ' Declare a new code entry point method.
            Dim start As New CodeEntryPointMethod()

            ' Create a type reference for the System.Console class.
            Dim csSystemConsoleType As New CodeTypeReferenceExpression( _
                "System.Console")

            ' Build a Console.WriteLine statement.
            Dim cs1 As New CodeMethodInvokeExpression( _
                csSystemConsoleType, "WriteLine", _
                New CodePrimitiveExpression("Hello World!"))

            ' Add the WriteLine call to the statement collection.
            start.Statements.Add(cs1)

            ' Build another Console.WriteLine statement.
            Dim cs2 As New CodeMethodInvokeExpression( _
                csSystemConsoleType, "WriteLine", _
                New CodePrimitiveExpression("Press the Enter key to continue."))

            ' Add the WriteLine call to the statement collection.
            start.Statements.Add(cs2)

            ' Build a call to System.Console.ReadLine.
            Dim csReadLine As New CodeMethodInvokeExpression( _
                csSystemConsoleType, "ReadLine")

            ' Add the ReadLine statement.
            start.Statements.Add(csReadLine)

            ' Add the code entry point method to
            ' the Members collection of the type.
            class1.Members.Add(start)

            Return compileUnit
        End Function

        Public Shared Sub GenerateCode(ByVal provider As CodeDomProvider, ByVal compileunit As CodeCompileUnit)

            ' Build the source file name with the appropriate
            ' language extension.
            Dim sourceFile As String
            If provider.FileExtension.StartsWith(".") Then
                sourceFile = "TestGraph" + provider.FileExtension
            Else
                sourceFile = "TestGraph." + provider.FileExtension
            End If

            ' Create an IndentedTextWriter, constructed with
            ' a StreamWriter to the source file.
            Dim tw As New IndentedTextWriter(New StreamWriter(sourceFile, False), "    ")
            ' Generate source code using the code generator.
            provider.GenerateCodeFromCompileUnit(compileunit, tw, New CodeGeneratorOptions())
            ' Close the output file.
            tw.Close()
        End Sub

        Public Shared Function CompileCode(ByVal provider As CodeDomProvider, _
                                           ByVal sourceFile As String, _
                                           ByVal exeFile As String) As CompilerResults

            ' Configure a CompilerParameters that links System.dll
            ' and produces the specified executable file.
            Dim referenceAssemblies As String() = {"System.dll"}
            Dim cp As New CompilerParameters(referenceAssemblies, exeFile, False)

            ' Generate an executable rather than a DLL file.
            cp.GenerateExecutable = True

            ' Invoke compilation.
            Dim cr As CompilerResults = provider.CompileAssemblyFromFile(cp, _
                sourceFile)
            ' Return the results of compilation.
            Return cr
        End Function
    End Class

    Public Class CodeDomExampleForm
        Inherits System.Windows.Forms.Form
        Private run_button As New System.Windows.Forms.Button()
        Private compile_button As New System.Windows.Forms.Button()
        Private generate_button As New System.Windows.Forms.Button()
        Private textBox1 As New System.Windows.Forms.TextBox()
        Private comboBox1 As New System.Windows.Forms.ComboBox()
        Private label1 As New System.Windows.Forms.Label()

        Private Sub generate_button_Click(ByVal sender As Object, ByVal e As System.EventArgs)
            Dim provider As CodeDomProvider = GetCurrentProvider()
            CodeDomExample.GenerateCode(provider, CodeDomExample.BuildHelloWorldGraph())

            ' Build the source file name with the appropriate
            ' language extension.
            Dim sourceFile As String
            If provider.FileExtension.StartsWith(".") Then
                sourceFile = "TestGraph" + provider.FileExtension
            Else
                sourceFile = "TestGraph." + provider.FileExtension
            End If

            ' Read in the generated source file and
            ' display the source text.
            Dim sr As New StreamReader(sourceFile)
            textBox1.Text = sr.ReadToEnd()
            sr.Close()
        End Sub

        Private Sub compile_button_Click(ByVal sender As Object, ByVal e As System.EventArgs)
            Dim provider As CodeDomProvider = GetCurrentProvider()

            ' Build the source file name with the appropriate
            ' language extension.
            Dim sourceFile As String
            If provider.FileExtension.StartsWith(".") Then
                sourceFile = "TestGraph" + provider.FileExtension
            Else
                sourceFile = "TestGraph." + provider.FileExtension
            End If

            Dim cr As CompilerResults = CodeDomExample.CompileCode(provider, _
                                                                   sourceFile, _
                                                                   "TestGraph.EXE")

            If cr.Errors.Count > 0 Then
                ' Display compilation errors.
                textBox1.Text = "Errors encountered while building " + _
                                sourceFile + " into " + _
                                cr.PathToAssembly + ": " + ControlChars.CrLf

                Dim ce As System.CodeDom.Compiler.CompilerError
                For Each ce In cr.Errors
                    textBox1.AppendText(ce.ToString() + ControlChars.CrLf)
                Next ce
                run_button.Enabled = False
            Else
                textBox1.Text = "Source " + sourceFile + " built into " + _
                                cr.PathToAssembly + " with no errors."
                run_button.Enabled = True
            End If
        End Sub

        Private Sub run_button_Click(ByVal sender As Object, _
            ByVal e As System.EventArgs)

            Process.Start("TestGraph.EXE")
        End Sub

        Private Function GetCurrentProvider() As CodeDomProvider

            Dim provider As CodeDomProvider
            Select Case CStr(Me.comboBox1.SelectedItem)
                Case "CSharp"
                    provider = CodeDomProvider.CreateProvider("CSharp")
                Case "Visual Basic"
                    provider = CodeDomProvider.CreateProvider("VisualBasic")
                Case "JScript"
                    provider = CodeDomProvider.CreateProvider("JScript")
                Case Else
                    provider = CodeDomProvider.CreateProvider("CSharp")
            End Select
            Return provider
        End Function

        Public Sub New()
            Me.SuspendLayout()
            ' Set properties for label1.
            Me.label1.Location = New System.Drawing.Point(395, 20)
            Me.label1.Size = New Size(180, 22)
            Me.label1.Text = "Select a programming language:"
            ' Set properties for comboBox1.
            Me.comboBox1.Location = New System.Drawing.Point(560, 16)
            Me.comboBox1.Size = New Size(190, 23)
            Me.comboBox1.Name = "comboBox1"
            Me.comboBox1.Items.AddRange(New String() {"CSharp", "Visual Basic", "JScript"})
            Me.comboBox1.Anchor = System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right Or System.Windows.Forms.AnchorStyles.Top
            Me.comboBox1.SelectedIndex = 0
            ' Set properties for generate_button.
            Me.generate_button.Location = New System.Drawing.Point(8, 16)
            Me.generate_button.Name = "generate_button"
            Me.generate_button.Size = New System.Drawing.Size(120, 23)
            Me.generate_button.Text = "Generate Code"
            AddHandler generate_button.Click, AddressOf Me.generate_button_Click
            ' Set properties for compile_button.
            Me.compile_button.Location = New System.Drawing.Point(136, 16)
            Me.compile_button.Name = "compile_button"
            Me.compile_button.Size = New System.Drawing.Size(120, 23)
            Me.compile_button.Text = "Compile"
            AddHandler compile_button.Click, AddressOf Me.compile_button_Click
            ' Set properties for run_button.
            Me.run_button.Enabled = False
            Me.run_button.Location = New System.Drawing.Point(264, 16)
            Me.run_button.Name = "run_button"
            Me.run_button.Size = New System.Drawing.Size(120, 23)
            Me.run_button.Text = "Run"
            AddHandler run_button.Click, AddressOf Me.run_button_Click
            ' Set properties for textBox1.
            Me.textBox1.Anchor = System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom Or System.Windows.Forms.AnchorStyles.Left Or System.Windows.Forms.AnchorStyles.Right
            Me.textBox1.Location = New System.Drawing.Point(8, 48)
            Me.textBox1.Multiline = True
            Me.textBox1.ScrollBars = System.Windows.Forms.ScrollBars.Vertical
            Me.textBox1.Name = "textBox1"
            Me.textBox1.Size = New System.Drawing.Size(744, 280)
            Me.textBox1.Text = ""
            ' Set properties for the CodeDomExampleForm.
            Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
            Me.ClientSize = New System.Drawing.Size(768, 340)
            Me.MinimumSize = New System.Drawing.Size(750, 340)
            Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.textBox1, _
                Me.run_button, Me.compile_button, Me.generate_button, _
                Me.comboBox1, Me.label1})
            Me.Name = "CodeDomExampleForm"
            Me.Text = "CodeDom Hello World Example"
            Me.ResumeLayout(False)
        End Sub

        Protected Overloads Sub Dispose(ByVal disposing As Boolean)
            MyBase.Dispose(disposing)
        End Sub

        <STAThread()> _
        Shared Sub Main()
            Application.Run(New CodeDomExampleForm())
        End Sub
    End Class
End Namespace

Comentários

Um CodeDomProvider pode ser usado para criar e recuperar instâncias de geradores de código e compiladores de código.A CodeDomProvider can be used to create and retrieve instances of code generators and code compilers. Geradores de código podem ser usados para gerar código em um idioma específico, e compiladores de código podem ser usados para compilar código em assemblies.Code generators can be used to generate code in a particular language, and code compilers can be used to compile code into assemblies.

Observação

.NET Framework 2.0.NET Framework 2.0No, os métodos disponibilizados no gerador de código e no compilador de código estão disponíveis diretamente do provedor de códigos.In the .NET Framework 2.0.NET Framework 2.0, the methods made available in the code generator and code compiler are available directly from the code provider. Você não precisa chamar CreateGenerator ou CreateCompiler acessar os métodos, e esses métodos são marcados como obsoletos.You do not need to call CreateGenerator or CreateCompiler to access the methods, and those methods are marked as obsolete. Isso se aplica a implementações de provedor de código preexistentes e novas.This applies to preexisting as well as new code provider implementations.

Uma CodeDomProvider implementação normalmente fornece a geração de código e/ou interfaces de compilação de código para gerar código e gerenciar a compilação para uma única linguagem de programação.A CodeDomProvider implementation typically provides code generation and/or code compilation interfaces for generating code and managing compilation for a single programming language. Há suporte para CodeDomProvider vários idiomas nas implementações fornecidas com o SDK do Windows.Several languages are supported by CodeDomProvider implementations that ship with the Windows SDK. Esses idiomas incluem C#, Visual Basic, C++e JScript.These languages include C#, Visual Basic, C++, and JScript. Os desenvolvedores ou fornecedores de compilador podem ICodeGenerator implementar ICodeCompiler as interfaces e e CodeDomProvider fornecer um que estenda o suporte a CodeDOM para outras linguagens de programação.Developers or compiler vendors can implement the ICodeGenerator and ICodeCompiler interfaces and provide a CodeDomProvider that extends CodeDOM support to other programming languages.

CodeDomProvider O <elemento System.> CodeDom no arquivo de configuração da máquina (Machine. config) fornece um mecanismo para os desenvolvedores e fornecedores de compilador adicionarem definições de configuração para implementações adicionais.The <system.codedom> Element in the machine configuration file (Machine.config) provides a mechanism for developers and compiler vendors to add configuration settings for additional CodeDomProvider implementations.

A CodeDomProvider classe fornece métodos estáticos para descobrir e enumerar as CodeDomProvider implementações em um computador.The CodeDomProvider class provides static methods to discover and enumerate the CodeDomProvider implementations on a computer. O GetAllCompilerInfo método retorna as configurações para todas CodeDomProvider as implementações em um computador.The GetAllCompilerInfo method returns the settings for all CodeDomProvider implementations on a computer. O GetCompilerInfo método retorna as configurações para uma implementação CodeDomProvider específica, com base no nome da linguagem de programação.The GetCompilerInfo method returns the settings for a specific CodeDomProvider implementation, based on the programming language name. O CreateProvider método retorna uma instância de uma CodeDomProvider implementação para um idioma específico.The CreateProvider method returns an instance of a CodeDomProvider implementation for a specific language.

Para obter mais detalhes sobre as configurações do provedor de idiomas no arquivo de configuração, consulte esquema e configurações do provedor de idiomas.For more details on language provider settings in the configuration file, see Compiler and Language Provider Settings Schema.

Observação

Essa classe faz uma demanda de link e uma demanda de herança no nível de classe.This class makes a link demand and an inheritance demand at the class level. Um SecurityException será gerado se o chamador imediato ou a classe derivada não tiver permissão de confiança total.A SecurityException is thrown if either the immediate caller or the derived class does not have full trust permission. Para obter detalhes sobre as demandas de segurança, consulte demandas de link e demandas de herança.For details about security demands, see Link Demands and Inheritance Demands.

Notas aos Herdeiros

No .NET Framework versões 1,0 e 1,1, os provedores de código consistem em CodeDomProviderimplementações ICodeParserdo, ICodeCompiler ICodeGenerator, e.In the .NET Framework versions 1.0 and 1.1, code providers consist of implementations of CodeDomProvider, ICodeGenerator, ICodeParser, and ICodeCompiler. CreateGenerator() CreateParser() ICodeCompiler No, os métodos ICodeGenerator , e sãoobsoletosCodeDomProvider , e os métodos de e estão diretamente disponíveis na classe. CreateCompiler() .NET Framework 2.0.NET Framework 2.0In the .NET Framework 2.0.NET Framework 2.0, the CreateGenerator(), CreateParser(), and CreateCompiler() methods are obsolete, and the methods of ICodeGenerator and ICodeCompiler are directly available in the CodeDomProvider class. Você deve substituir esses métodos na implementação do provedor de código e não chamar os métodos base.You should override those methods in your code provider implementation and not call the base methods.

Construtores

CodeDomProvider()

Inicializa uma nova instância da classe CodeDomProvider.Initializes a new instance of the CodeDomProvider class.

Propriedades

CanRaiseEvents

Obtém um valor que indica se o componente pode acionar um evento.Gets a value indicating whether the component can raise an event.

(Herdado de Component)
Container

Obtém o IContainer que contém o Component.Gets the IContainer that contains the Component.

(Herdado de Component)
DesignMode

Obtém um valor que indica se o Component está no modo de design no momento.Gets a value that indicates whether the Component is currently in design mode.

(Herdado de Component)
Events

Obtém a lista de manipuladores de eventos que estão anexados a este Component.Gets the list of event handlers that are attached to this Component.

(Herdado de Component)
FileExtension

Obtém a extensão de nome de arquivo padrão a ser usada para arquivos de código-fonte na linguagem de programação atual.Gets the default file name extension to use for source code files in the current language.

LanguageOptions

Obtém um identificador de recursos de idioma.Gets a language features identifier.

Site

Obtém ou define o ISite do Component.Gets or sets the ISite of the Component.

(Herdado de Component)

Métodos

CompileAssemblyFromDom(CompilerParameters, CodeCompileUnit[])

Compila um assembly com base nas árvores System.CodeDom contidas na matriz especificada de objetos CodeCompileUnit, usando as configurações de compilador especificadas.Compiles an assembly based on the System.CodeDom trees contained in the specified array of CodeCompileUnit objects, using the specified compiler settings.

CompileAssemblyFromFile(CompilerParameters, String[])

Compila um assembly do código-fonte contido nos arquivos especificados, usando as configurações de compilador especificadas.Compiles an assembly from the source code contained in the specified files, using the specified compiler settings.

CompileAssemblyFromSource(CompilerParameters, String[])

Compila um assembly da matriz especificada de cadeias de caracteres que contém o código-fonte, usando as configurações do compilador especificadas.Compiles an assembly from the specified array of strings containing source code, using the specified compiler settings.

CreateCompiler()

Quando substituído em uma classe derivada, cria um novo compilador de código.When overridden in a derived class, creates a new code compiler.

CreateEscapedIdentifier(String)

Cria um identificador de escape para o valor especificado.Creates an escaped identifier for the specified value.

CreateGenerator()

Quando substituído em uma classe derivada, cria um novo gerador de código.When overridden in a derived class, creates a new code generator.

CreateGenerator(String)

Quando substituído em uma classe derivada, cria um novo gerador de código usando o nome do arquivo especificado para saída.When overridden in a derived class, creates a new code generator using the specified file name for output.

CreateGenerator(TextWriter)

Quando substituído em uma classe derivada, cria um novo gerador de código usando o TextWriter especificado para saída.When overridden in a derived class, creates a new code generator using the specified TextWriter for output.

CreateObjRef(Type)

Cria um objeto que contém todas as informações relevantes necessárias para gerar um proxy usado para se comunicar com um objeto remoto.Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.

(Herdado de MarshalByRefObject)
CreateParser()

Quando substituído em uma classe derivada, cria um novo analisador de código.When overridden in a derived class, creates a new code parser.

CreateProvider(String)

Obtém uma instância CodeDomProvider para o idioma especificado.Gets a CodeDomProvider instance for the specified language.

CreateProvider(String, IDictionary<String,String>)

Obtém uma instância CodeDomProvider para as opções de idioma e provedor especificadas.Gets a CodeDomProvider instance for the specified language and provider options.

CreateValidIdentifier(String)

Cria um identificador válido para o valor especificado.Creates a valid identifier for the specified value.

Dispose()

Libera todos os recursos usados pelo Component.Releases all resources used by the Component.

(Herdado de Component)
Dispose(Boolean)

Libera os recursos não gerenciados usados pelo Component e opcionalmente libera os recursos gerenciados.Releases the unmanaged resources used by the Component and optionally releases the managed resources.

(Herdado de Component)
Equals(Object)

Determina se o objeto especificado é igual ao objeto atual.Determines whether the specified object is equal to the current object.

(Herdado de Object)
GenerateCodeFromCompileUnit(CodeCompileUnit, TextWriter, CodeGeneratorOptions)

Gera código para a unidade de compilação CodeDOM (Modelo de Objeto do Documento de Código) especificada e envia-a para o text writer especificado, usando as opções especificadas.Generates code for the specified Code Document Object Model (CodeDOM) compilation unit and sends it to the specified text writer, using the specified options.

GenerateCodeFromExpression(CodeExpression, TextWriter, CodeGeneratorOptions)

Gera código para a expressão CodeDOM (Modelo de Objeto do Documento de Código) especificada e o envia para o text writer especificado, usando as opções especificadas.Generates code for the specified Code Document Object Model (CodeDOM) expression and sends it to the specified text writer, using the specified options.

GenerateCodeFromMember(CodeTypeMember, TextWriter, CodeGeneratorOptions)

Gera código para a declaração de membro CodeDOM (Modelo de Objeto do Documento de Código) especificada e o envia para o text writer especificado, usando as opções especificadas.Generates code for the specified Code Document Object Model (CodeDOM) member declaration and sends it to the specified text writer, using the specified options.

GenerateCodeFromNamespace(CodeNamespace, TextWriter, CodeGeneratorOptions)

Gera código para o namespace CodeDOM (Modelo de Objeto do Documento de Código) especificado e envia-o para o text writer especificado, usando as opções especificadas.Generates code for the specified Code Document Object Model (CodeDOM) namespace and sends it to the specified text writer, using the specified options.

GenerateCodeFromStatement(CodeStatement, TextWriter, CodeGeneratorOptions)

Gera código para a instrução CodeDOM (Modelo de Objeto do Documento de Código) especificada e envia-o para o text writer especificado, usando as opções especificadas.Generates code for the specified Code Document Object Model (CodeDOM) statement and sends it to the specified text writer, using the specified options.

GenerateCodeFromType(CodeTypeDeclaration, TextWriter, CodeGeneratorOptions)

Gera código para a declaração de tipo CodeDOM (Modelo de Objeto do Documento de Código) especificada e envia-o para o text writer especificado, usando as opções especificadas.Generates code for the specified Code Document Object Model (CodeDOM) type declaration and sends it to the specified text writer, using the specified options.

GetAllCompilerInfo()

Retorna as configurações de compilador e de provedor de linguagem de programação para este computador.Returns the language provider and compiler configuration settings for this computer.

GetCompilerInfo(String)

Retorna as configurações de compilador e de provedor de linguagem de programação para a linguagem de programação especificada.Returns the language provider and compiler configuration settings for the specified language.

GetConverter(Type)

Obtém um TypeConverter para o tipo de dados especificado.Gets a TypeConverter for the specified data type.

GetHashCode()

Serve como a função de hash padrão.Serves as the default hash function.

(Herdado de Object)
GetLanguageFromExtension(String)

Retorna um nome de linguagem de programação associado com a extensão de nome de arquivo especificada, conforme configurado na seção de configuração do compilador CodeDomProvider.Returns a language name associated with the specified file name extension, as configured in the CodeDomProvider compiler configuration section.

GetLifetimeService()

Recupera o objeto de serviço de tempo de vida atual que controla a política de ciclo de vida para esta instância.Retrieves the current lifetime service object that controls the lifetime policy for this instance.

(Herdado de MarshalByRefObject)
GetService(Type)

Retorna um objeto que representa um serviço fornecido pelo Component ou pelo seu Container.Returns an object that represents a service provided by the Component or by its Container.

(Herdado de Component)
GetType()

Obtém o Type da instância atual.Gets the Type of the current instance.

(Herdado de Object)
GetTypeOutput(CodeTypeReference)

Obtém o tipo indicado pelo CodeTypeReference especificado.Gets the type indicated by the specified CodeTypeReference.

InitializeLifetimeService()

Obtém um objeto de serviço de tempo de vida para controlar a política de tempo de vida para essa instância.Obtains a lifetime service object to control the lifetime policy for this instance.

(Herdado de MarshalByRefObject)
IsDefinedExtension(String)

Testa se uma extensão de nome de arquivo tem uma implementação de CodeDomProvider associada configurada no computador.Tests whether a file name extension has an associated CodeDomProvider implementation configured on the computer.

IsDefinedLanguage(String)

Testa se uma linguagem de programação tem uma implementação de CodeDomProvider configurada no computador.Tests whether a language has a CodeDomProvider implementation configured on the computer.

IsValidIdentifier(String)

Retorna um valor que indica se o valor especificado é um identificador válido para a linguagem de programação atual.Returns a value that indicates whether the specified value is a valid identifier for the current language.

MemberwiseClone()

Cria uma cópia superficial do Object atual.Creates a shallow copy of the current Object.

(Herdado de Object)
MemberwiseClone(Boolean)

Cria uma cópia superficial do objeto MarshalByRefObject atual.Creates a shallow copy of the current MarshalByRefObject object.

(Herdado de MarshalByRefObject)
Parse(TextReader)

Compila o código lido do fluxo de texto especificado em um CodeCompileUnit.Compiles the code read from the specified text stream into a CodeCompileUnit.

Supports(GeneratorSupport)

Retorna um valor que indica se o suporte à geração de código especificado é fornecido.Returns a value indicating whether the specified code generation support is provided.

ToString()

Retorna um String que contém o nome do Component, se houver.Returns a String containing the name of the Component, if any. Esse método não deve ser substituído.This method should not be overridden.

(Herdado de Component)

Eventos

Disposed

Ocorre quando o componente é disposto por uma chamada para o método Dispose().Occurs when the component is disposed by a call to the Dispose() method.

(Herdado de Component)

Segurança

LinkDemand
para confiança total do chamador imediato.for full trust for the immediate caller. Esta classe não pode ser usada pelo código parcialmente confiável.This class cannot be used by partially trusted code.

InheritanceDemand
para confiança total de herdeiros.for full trust for inheritors. Esta classe não pode ser herdada pelo código parcialmente confiável.This class cannot be inherited by partially trusted code.

Aplica-se a

Veja também