AssemblyBuilder.CreateCodeFile(BuildProvider) 方法

參考

定義

命名空間:: System.Web.Compilation

組件:: System.Web.dll

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

允許組建提供者建立暫時來源檔案，並將來源檔案包括在組件編譯中。

public:
 System::IO::TextWriter ^ CreateCodeFile(System::Web::Compilation::BuildProvider ^ buildProvider);

public System.IO.TextWriter CreateCodeFile (System.Web.Compilation.BuildProvider buildProvider);

member this.CreateCodeFile : System.Web.Compilation.BuildProvider -> System.IO.TextWriter

Public Function CreateCodeFile (buildProvider As BuildProvider) As TextWriter

參數

buildProvider: BuildProvider

產生程式碼來源檔案的組建提供者。

傳回

TextWriter

可以用來將原始程式碼寫入到暫時檔案之開啟的 TextWriter。

範例

下列程式碼範例說明簡單的建置提供者實作，繼承自抽象 BuildProvider 基類。建置提供者會 CodeCompilerType 覆寫基類的、 GetGeneratedType 和 GenerateCode 成員。

在方法實作 GenerateCode 中，建置提供者會使用 CreateCodeFile 方法為元件編譯新增產生的程式碼。此範例不包含類別的實作 SampleClassGenerator 。如需詳細資訊，請參閱CodeCompileUnit。

using System;
using System.Collections;
using System.IO;
using System.Text;
using System.Web;
using System.Web.Compilation;
using System.CodeDom.Compiler;
using System.CodeDom;
using System.Security;
using System.Security.Permissions;

// Define a simple build provider implementation.
[PermissionSet(SecurityAction.Demand, Unrestricted = true)]
public class SampleBuildProvider : BuildProvider
{
    // Define an internal member for the compiler type.
    protected CompilerType _compilerType = null;

    public SampleBuildProvider()
    {
        // Set the compiler to use Visual Basic.
        _compilerType = GetDefaultCompilerTypeForLanguage("C#");
    }

    // Return the internal CompilerType member 
    // defined in this implementation.
    public override CompilerType CodeCompilerType
    {
        get { return _compilerType; }
    }

    // Define a method that returns details for the 
    // code compiler for this build provider.
    public string GetCompilerTypeDetails()
    {
        StringBuilder details = new StringBuilder("");

        if (_compilerType != null)
        {
            // Format a string that contains the code compiler
            // implementation, and various compiler details.

            details.AppendFormat("CodeDomProvider type: {0}; \n",
                _compilerType.CodeDomProviderType.ToString());
            details.AppendFormat("Compiler debug build = {0}; \n",
                _compilerType.CompilerParameters.IncludeDebugInformation.ToString());
            details.AppendFormat("Compiler warning level = {0}; \n",
                _compilerType.CompilerParameters.WarningLevel.ToString());

            if (_compilerType.CompilerParameters.CompilerOptions != null)
            {
                details.AppendFormat("Compiler options: {0}; \n",
                    _compilerType.CompilerParameters.CompilerOptions.ToString());
            }
        }
        return details.ToString();
    }

    // Define the build provider implementation of the GenerateCode method.
    public override void GenerateCode(AssemblyBuilder assemBuilder)
    {
        // Generate a code compile unit, and add it to
        // the assembly builder.

        TextWriter tw = assemBuilder.CreateCodeFile(this);
        if (tw != null)
        {
            try
            {
                // Generate the code compile unit from the virtual path.
                CodeCompileUnit compileUnit = SampleClassGenerator.BuildCompileUnitFromPath(VirtualPath);

                // Generate the source for the code compile unit, 
                // and write it to a file specified by the assembly builder.
                CodeDomProvider provider = assemBuilder.CodeDomProvider;
                provider.CreateGenerator().GenerateCodeFromCompileUnit(compileUnit, tw, null);
            }
            finally
            {
                tw.Close();
            }
        }
    }

    public override System.Type GetGeneratedType(CompilerResults results)
    {
        string typeName = SampleClassGenerator.TypeName;

        return results.CompiledAssembly.GetType(typeName);
    }
}

Imports System.Collections
Imports System.IO
Imports System.Text
Imports System.Web
Imports System.Web.Compilation
Imports System.CodeDom.Compiler
Imports System.CodeDom
Imports System.Security
Imports System.Security.Permissions

<PermissionSet(SecurityAction.Demand, Unrestricted := true)> _
Public Class SampleBuildProvider
    Inherits BuildProvider

    Protected _compilerType As CompilerType = Nothing

    Public Sub New()
        _compilerType = GetDefaultCompilerType()
    End Sub

    ' Return the internal CompilerType member 
    ' defined in this implementation.
    Public Overrides ReadOnly Property CodeCompilerType() As CompilerType
        Get
            CodeCompilerType = _compilerType
        End Get
    End Property

    ' Define a method that returns details for the 
    ' code compiler for this build provider.
    Public Function GetCompilerTypeDetails() As String
        Dim details As StringBuilder = New StringBuilder("")

        If Not _compilerType Is Nothing Then
            ' Format a string that contains the code compiler
            ' implementation, and various compiler details.

            details.AppendFormat("CodeDomProvider type: {0}; ", _
                _compilerType.CodeDomProviderType.ToString())
            details.AppendFormat("Compiler debug build = {0}; ", _
                _compilerType.CompilerParameters.IncludeDebugInformation.ToString())
            details.AppendFormat("Compiler warning level = {0}; ", _
                _compilerType.CompilerParameters.WarningLevel.ToString())

            If Not _compilerType.CompilerParameters.CompilerOptions Is Nothing Then
                details.AppendFormat("Compiler options: {0}; ", _
                    _compilerType.CompilerParameters.CompilerOptions.ToString())
            End If
        End If
        Return details.ToString()
    End Function

    ' Define the build provider implementation of the GenerateCode method.
    Public Overrides Sub GenerateCode(ByVal assemBuilder As AssemblyBuilder)
        ' Generate a code compile unit, and add it to
        ' the assembly builder.

        Dim tw As TextWriter = assemBuilder.CreateCodeFile(Me)
        If Not tw Is Nothing Then
            Try
                ' Generate the code compile unit from the virtual path.
                Dim compileUnit As CodeCompileUnit = _
                        SampleClassGenerator.BuildCompileUnitFromPath(VirtualPath)

                ' Generate the source for the code compile unit, 
                ' and write it to a file specified by the assembly builder.
                Dim provider As CodeDomProvider = assemBuilder.CodeDomProvider
                provider.CreateGenerator().GenerateCodeFromCompileUnit(compileUnit, tw, Nothing)
            Finally
                tw.Close()
            End Try

        End If
    End Sub

    Public Overrides Function GetGeneratedType(ByVal results As CompilerResults) As System.Type
        Dim typeName As String = SampleClassGenerator.TypeName

        Return results.CompiledAssembly.GetType(typeName)
    End Function

End Class

備註

實 BuildProvider 作會在產生虛擬路徑的來源檔案時呼叫 CreateCodeFile 方法。新增的 CreateCodeFile 原始程式碼包含在元件編譯中。

一般而言，建置提供者 GenerateCode 方法實作會 VirtualPath 讀取屬性、剖析內容，然後將產生的原始程式碼新增至指定的 AssemblyBuilder 物件。建置提供者會使用方法， CreateCodeFile 將原始程式碼新增為實體檔案至元件。或者，建置提供者可以使用 AddCodeCompileUnit 方法，將原始程式碼新增為 CodeDOM 圖形至元件。

呼叫 CreateCodeFile 之後，建置提供者會使用傳 TextWriter 回的物件寫入來源檔案內容。撰寫來源檔案之後， BuildProvider 物件必須使用 Close 方法來關閉 TextWriter 物件並釋放相關聯的系統資源。

適用於

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AssemblyBuilder.CreateCodeFile(BuildProvider) 方法

定義

參數

傳回

範例

備註

適用於

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