Nasıl yapılır: MaskedTextBox Denetimine Veri Bağlama
verileri bir MaskedTextBox denetime, diğer Windows Forms denetimine yapabildiğiniz gibi bağlayabilirsiniz. Ancak, veritabanındaki verilerinizin biçimi maske tanımınızda beklenen biçimle eşleşmezse, verileri yeniden biçimlendirmeniz gerekir. Aşağıdaki yordamda, Format Parse Binding farklı telefon numarası ve telefon uzantısı veritabanı alanlarını tek bir düzenlenebilir alan olarak göstermek için sınıfının ve olaylarını kullanarak bunun nasıl yapılacağı gösterilmektedir.
aşağıdaki yordam, Northwind örnek veritabanının yüklü olduğu bir SQL Server veritabanına erişiminizin olmasını gerektirir.
MaskedTextBox denetimine veri bağlama
yeni bir Windows Forms projesi oluşturun.
Formunuza iki TextBox Denetim sürükleyin; onları ve adlarını adlandırın
FirstNameLastName.Formunuza bir MaskedTextBox Denetim sürükleyin; adlandırın
PhoneMask.MaskÖzelliğini
PhoneMaskolarak ayarlayın(000) 000-0000 x9999.Aşağıdaki ad alanı içeri aktarmaları forma ekleyin.
using System.Data.SqlClient;Imports System.Data.SqlClientForma sağ tıklayın ve kodu görüntüle' yi seçin. Bu kodu form sınıfınız içinde herhangi bir yere yerleştirin.
Binding currentBinding, phoneBinding; DataSet employeesTable = new DataSet(); SqlConnection sc; SqlDataAdapter dataConnect; private void Form1_Load(object sender, EventArgs e) { DoMaskBinding(); } private void DoMaskBinding() { try { sc = new SqlConnection("Data Source=CLIENTUE;Initial Catalog=NORTHWIND;Integrated Security=SSPI"); sc.Open(); } catch (Exception ex) { MessageBox.Show(ex.Message); return; } dataConnect = new SqlDataAdapter("SELECT * FROM Employees", sc); dataConnect.Fill(employeesTable, "Employees"); // Now bind MaskedTextBox to appropriate field. Note that we must create the Binding objects // before adding them to the control - otherwise, we won't get a Format event on the // initial load. try { currentBinding = new Binding("Text", employeesTable, "Employees.FirstName"); firstName.DataBindings.Add(currentBinding); currentBinding = new Binding("Text", employeesTable, "Employees.LastName"); lastName.DataBindings.Add(currentBinding); phoneBinding =new Binding("Text", employeesTable, "Employees.HomePhone"); // We must add the event handlers before we bind, or the Format event will not get called // for the first record. phoneBinding.Format += new ConvertEventHandler(phoneBinding_Format); phoneBinding.Parse += new ConvertEventHandler(phoneBinding_Parse); phoneMask.DataBindings.Add(phoneBinding); } catch (Exception ex) { MessageBox.Show(ex.Message); return; } }Dim WithEvents CurrentBinding, PhoneBinding As Binding Dim EmployeesTable As New DataSet() Dim sc As SqlConnection Dim DataConnect As SqlDataAdapter Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load DoMaskedBinding() End Sub Private Sub DoMaskedBinding() Try sc = New SqlConnection("Data Source=SERVERNAME;Initial Catalog=NORTHWIND;Integrated Security=SSPI") sc.Open() Catch ex As Exception MessageBox.Show(ex.Message) Exit Sub End Try DataConnect = New SqlDataAdapter("SELECT * FROM Employees", sc) DataConnect.Fill(EmployeesTable, "Employees") ' Now bind MaskedTextBox to appropriate field. Note that we must create the Binding objects ' before adding them to the control - otherwise, we won't get a Format event on the ' initial load. Try CurrentBinding = New Binding("Text", EmployeesTable, "Employees.FirstName") firstName.DataBindings.Add(CurrentBinding) CurrentBinding = New Binding("Text", EmployeesTable, "Employees.LastName") lastName.DataBindings.Add(CurrentBinding) PhoneBinding = New Binding("Text", EmployeesTable, "Employees.HomePhone") PhoneMask.DataBindings.Add(PhoneBinding) Catch ex As Exception MessageBox.Show(ex.Message) Application.Exit() End Try End SubVe Format Parse alanlarını birleştirmek ve bir araya getirmek için olaylar için olay işleyicileri
PhoneNumberekleyinExtensionDataSet .private void phoneBinding_Format(Object sender, ConvertEventArgs e) { String ext; DataRowView currentRow = (DataRowView)BindingContext[employeesTable, "Employees"].Current; if (currentRow["Extension"] == null) { ext = ""; } else { ext = currentRow["Extension"].ToString(); } e.Value = e.Value.ToString().Trim() + " x" + ext; } private void phoneBinding_Parse(Object sender, ConvertEventArgs e) { String phoneNumberAndExt = e.Value.ToString(); int extIndex = phoneNumberAndExt.IndexOf("x"); String ext = phoneNumberAndExt.Substring(extIndex).Trim(); String phoneNumber = phoneNumberAndExt.Substring(0, extIndex).Trim(); //Get the current binding object, and set the new extension manually. DataRowView currentRow = (DataRowView)BindingContext[employeesTable, "Employees"].Current; // Remove the "x" from the extension. currentRow["Extension"] = ext.Substring(1); //Return the phone number. e.Value = phoneNumber; }Private Sub PhoneBinding_Format(ByVal sender As Object, ByVal e As ConvertEventArgs) Handles PhoneBinding.Format Dim Ext As String Dim CurrentRow As DataRowView = CType(Me.BindingContext(EmployeesTable, "Employees").Current, DataRowView) If (CurrentRow("Extension") Is Nothing) Then Ext = "" Else Ext = CurrentRow("Extension").ToString() End If e.Value = e.Value.ToString().Trim() & " x" & Ext End Sub Private Sub PhoneBinding_Parse(ByVal sender As Object, ByVal e As ConvertEventArgs) Handles PhoneBinding.Parse Dim PhoneNumberAndExt As String = e.Value.ToString() Dim ExtIndex As Integer = PhoneNumberAndExt.IndexOf("x") Dim Ext As String = PhoneNumberAndExt.Substring(ExtIndex).Trim() Dim PhoneNumber As String = PhoneNumberAndExt.Substring(0, ExtIndex).Trim() ' Get the current binding object, and set the new extension manually. Dim CurrentRow As DataRowView = CType(Me.BindingContext(EmployeesTable, "Employees").Current, DataRowView) ' Remove the "x" from the extension. CurrentRow("Extension") = CObj(Ext.Substring(1)) ' Return the phone number. e.Value = PhoneNumber End SubForma iki Button denetim ekleyin. Onları ve olarak adlandırın
previousButtonnextButton. Her düğmeye çift tıklayarak bir Click olay işleyicisi ekleyin ve olay işleyicilerini aşağıdaki kod örneğinde gösterildiği gibi girin.private void previousButton_Click(object sender, EventArgs e) { BindingContext[employeesTable, "Employees"].Position = BindingContext[employeesTable, "Employees"].Position - 1; } private void nextButton_Click(object sender, EventArgs e) { BindingContext[employeesTable, "Employees"].Position = BindingContext[employeesTable, "Employees"].Position + 1; }Private Sub PreviousButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PreviousButton.Click Me.BindingContext(EmployeesTable, "Employees").Position = Me.BindingContext(EmployeesTable, "Employees").Position - 1 End Sub Private Sub NextButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NextButton.Click Me.BindingContext(EmployeesTable, "Employees").Position = Me.BindingContext(EmployeesTable, "Employees").Position + 1 End SubÖrnek uygulamayı çalıştırın. Verileri düzenleyin ve verilerin ' de düzgün şekilde kalıcı olduğunu görmek için önceki ve sonraki düğmelerini kullanın DataSet .
Örnek
Aşağıdaki kod örneği, önceki yordamın tamamlanmasına neden olan tam kod listesidir.
#pragma region Using directives
#using <System.dll>
#using <System.Data.dll>
#using <System.Drawing.dll>
#using <System.Windows.Forms.dll>
#using <System.Xml.dll>
#using <System.EnterpriseServices.dll>
#using <System.Transactions.dll>
using namespace System;
using namespace System::Collections::Generic;
using namespace System::ComponentModel;
using namespace System::Data;
using namespace System::Drawing;
using namespace System::Windows::Forms;
using namespace System::Data::SqlClient;
#pragma endregion
namespace MaskedTextBoxDataCSharp
{
public ref class Form1 : public Form
{
/// <summary>
/// Required designer variable.
/// </summary>
private:
System::ComponentModel::IContainer^ components;
public:
Form1()
{
InitializeComponent();
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected:
~Form1()
{
if (components != nullptr)
{
delete components;
}
}
#pragma region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private:
void InitializeComponent()
{
employeesTable = gcnew DataSet();
components = nullptr;
this->firstName = gcnew System::Windows::Forms::TextBox();
this->lastName = gcnew System::Windows::Forms::TextBox();
this->phoneMask = gcnew System::Windows::Forms::MaskedTextBox();
this->previousButton = gcnew System::Windows::Forms::Button();
this->nextButton = gcnew System::Windows::Forms::Button();
this->SuspendLayout();
//
// firstName
//
this->firstName->Location = System::Drawing::Point(13, 14);
this->firstName->Name = "firstName";
this->firstName->Size = System::Drawing::Size(184, 20);
this->firstName->TabIndex = 0;
//
// lastName
//
this->lastName->Location = System::Drawing::Point(204, 14);
this->lastName->Name = "lastName";
this->lastName->Size = System::Drawing::Size(184, 20);
this->lastName->TabIndex = 1;
//
// phoneMask
//
this->phoneMask->Location = System::Drawing::Point(441, 14);
this->phoneMask->Mask = "(009) 000-0000 x9999";
this->phoneMask->Name = "phoneMask";
this->phoneMask->Size = System::Drawing::Size(169, 20);
this->phoneMask->TabIndex = 2;
//
// previousButton
//
this->previousButton->Location = System::Drawing::Point(630, 14);
this->previousButton->Name = "previousButton";
this->previousButton->TabIndex = 3;
this->previousButton->Text = "Previous";
this->previousButton->Click += gcnew System::EventHandler(this,&Form1::previousButton_Click);
//
// nextButton
//
this->nextButton->Location = System::Drawing::Point(723, 14);
this->nextButton->Name = "nextButton";
this->nextButton->TabIndex = 4;
this->nextButton->Text = "Next";
this->nextButton->Click += gcnew System::EventHandler(this,&Form1::nextButton_Click);
//
// Form1
//
this->AutoScaleBaseSize = System::Drawing::Size(5, 13);
this->ClientSize = System::Drawing::Size(887, 46);
this->Controls->Add(this->nextButton);
this->Controls->Add(this->previousButton);
this->Controls->Add(this->phoneMask);
this->Controls->Add(this->lastName);
this->Controls->Add(this->firstName);
this->Name = "Form1";
this->Text = "Form1";
this->Load += gcnew System::EventHandler(this,&Form1::Form1_Load);
this->ResumeLayout(false);
this->PerformLayout();
}
#pragma endregion
private:
System::Windows::Forms::TextBox^ firstName;
System::Windows::Forms::TextBox^ lastName;
System::Windows::Forms::MaskedTextBox^ phoneMask;
System::Windows::Forms::Button^ previousButton;
System::Windows::Forms::Button^ nextButton;
private:
Binding^ currentBinding;
Binding^ phoneBinding;
DataSet^ employeesTable;
SqlConnection^ sc;
SqlDataAdapter^ dataConnect;
private:
void Form1_Load(Object^ sender, EventArgs^ e)
{
DoMaskBinding();
}
private:
void DoMaskBinding()
{
try
{
sc = gcnew SqlConnection("Data Source=localhost;" +
"Initial Catalog=NORTHWIND;Integrated Security=SSPI");
sc->Open();
}
catch (Exception^ ex)
{
MessageBox::Show(ex->Message);
return;
}
dataConnect = gcnew SqlDataAdapter("SELECT * FROM Employees", sc);
dataConnect->Fill(employeesTable, "Employees");
// Now bind MaskedTextBox to appropriate field. Note that we must
// create the Binding objects before adding them to the control -
// otherwise, we won't get a Format event on the initial load.
try
{
currentBinding = gcnew Binding("Text", employeesTable,
"Employees.FirstName");
firstName->DataBindings->Add(currentBinding);
currentBinding = gcnew Binding("Text", employeesTable,
"Employees.LastName");
lastName->DataBindings->Add(currentBinding);
phoneBinding = gcnew Binding("Text", employeesTable,
"Employees.HomePhone");
// We must add the event handlers before we bind, or the
// Format event will not get called for the first record.
phoneBinding->Format += gcnew
ConvertEventHandler(this, &Form1::phoneBinding_Format);
phoneBinding->Parse += gcnew
ConvertEventHandler(this, &Form1::phoneBinding_Parse);
phoneMask->DataBindings->Add(phoneBinding);
}
catch (Exception^ ex)
{
MessageBox::Show(ex->Message);
return;
}
}
private:
void phoneBinding_Format(Object^ sender, ConvertEventArgs^ e)
{
String^ ext;
DataRowView^ currentRow = (DataRowView^) BindingContext[
employeesTable, "Employees"]->Current;
if (currentRow["Extension"] == nullptr)
{
ext = "";
}
else
{
ext = currentRow["Extension"]->ToString();
}
e->Value = e->Value->ToString()->Trim() + " x" + ext;
}
private:
void phoneBinding_Parse(Object^ sender, ConvertEventArgs^ e)
{
String^ phoneNumberAndExt = e->Value->ToString();
int extIndex = phoneNumberAndExt->IndexOf("x");
String^ ext = phoneNumberAndExt->Substring(extIndex)->Trim();
String^ phoneNumber =
phoneNumberAndExt->Substring(0, extIndex)->Trim();
//Get the current binding object, and set the new extension
//manually.
DataRowView^ currentRow =
(DataRowView^ ) BindingContext[employeesTable,
"Employees"]->Current;
// Remove the "x" from the extension.
currentRow["Extension"] = ext->Substring(1);
//Return the phone number.
e->Value = phoneNumber;
}
private:
void previousButton_Click(Object^ sender, EventArgs^ e)
{
BindingContext[employeesTable, "Employees"]->Position =
BindingContext[employeesTable, "Employees"]->Position - 1;
}
private:
void nextButton_Click(Object^ sender, EventArgs^ e)
{
BindingContext[employeesTable, "Employees"]->Position =
BindingContext[employeesTable, "Employees"]->Position + 1;
}
};
}
[STAThread]
int main()
{
Application::EnableVisualStyles();
Application::Run(gcnew MaskedTextBoxDataCSharp::Form1());
}
#region Using directives
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Windows.Forms;
using System.Data.SqlClient;
#endregion
namespace MaskedTextBoxDataCSharp
{
partial class Form1 : Form
{
Binding currentBinding, phoneBinding;
DataSet employeesTable = new DataSet();
SqlConnection sc;
SqlDataAdapter dataConnect;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
DoMaskBinding();
}
private void DoMaskBinding()
{
try
{
sc = new SqlConnection("Data Source=localhost;Initial Catalog=NORTHWIND;Integrated Security=SSPI");
sc.Open();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
dataConnect = new SqlDataAdapter("SELECT * FROM Employees", sc);
dataConnect.Fill(employeesTable, "Employees");
// Now bind MaskedTextBox to appropriate field. Note that we must create the Binding objects
// before adding them to the control - otherwise, we won't get a Format event on the
// initial load.
try
{
currentBinding = new Binding("Text", employeesTable, "Employees.FirstName");
firstName.DataBindings.Add(currentBinding);
currentBinding = new Binding("Text", employeesTable, "Employees.LastName");
lastName.DataBindings.Add(currentBinding);
phoneBinding =new Binding("Text", employeesTable, "Employees.HomePhone");
// We must add the event handlers before we bind, or the Format event will not get called
// for the first record.
phoneBinding.Format += new ConvertEventHandler(phoneBinding_Format);
phoneBinding.Parse += new ConvertEventHandler(phoneBinding_Parse);
phoneMask.DataBindings.Add(phoneBinding);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
return;
}
}
private void phoneBinding_Format(Object sender, ConvertEventArgs e)
{
String ext;
DataRowView currentRow = (DataRowView)BindingContext[employeesTable, "Employees"].Current;
if (currentRow["Extension"] == null)
{
ext = "";
} else
{
ext = currentRow["Extension"].ToString();
}
e.Value = e.Value.ToString().Trim() + " x" + ext;
}
private void phoneBinding_Parse(Object sender, ConvertEventArgs e)
{
String phoneNumberAndExt = e.Value.ToString();
int extIndex = phoneNumberAndExt.IndexOf("x");
String ext = phoneNumberAndExt.Substring(extIndex).Trim();
String phoneNumber = phoneNumberAndExt.Substring(0, extIndex).Trim();
//Get the current binding object, and set the new extension manually.
DataRowView currentRow = (DataRowView)BindingContext[employeesTable, "Employees"].Current;
// Remove the "x" from the extension.
currentRow["Extension"] = ext.Substring(1);
//Return the phone number.
e.Value = phoneNumber;
}
private void previousButton_Click(object sender, EventArgs e)
{
BindingContext[employeesTable, "Employees"].Position = BindingContext[employeesTable, "Employees"].Position - 1;
}
private void nextButton_Click(object sender, EventArgs e)
{
BindingContext[employeesTable, "Employees"].Position = BindingContext[employeesTable, "Employees"].Position + 1;
}
}
}
Imports System.Data.SqlClient
Public Class Form1
Dim WithEvents CurrentBinding, PhoneBinding As Binding
Dim EmployeesTable As New DataSet()
Dim sc As SqlConnection
Dim DataConnect As SqlDataAdapter
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
DoMaskedBinding()
End Sub
Private Sub DoMaskedBinding()
Try
sc = New SqlConnection("Data Source=localhost;Initial Catalog=NORTHWIND;Integrated Security=SSPI")
sc.Open()
Catch ex As Exception
MessageBox.Show(ex.Message)
Application.Exit()
End Try
DataConnect = New SqlDataAdapter("SELECT * FROM Employees", sc)
DataConnect.Fill(EmployeesTable, "Employees")
' Now bind MaskedTextBox to appropriate field. Note that we must create the Binding objects
' before adding them to the control - otherwise, we won't get a Format event on the
' initial load.
Try
CurrentBinding = New Binding("Text", EmployeesTable, "Employees.FirstName")
firstName.DataBindings.Add(CurrentBinding)
CurrentBinding = New Binding("Text", EmployeesTable, "Employees.LastName")
lastName.DataBindings.Add(CurrentBinding)
PhoneBinding = New Binding("Text", EmployeesTable, "Employees.HomePhone")
PhoneMask.DataBindings.Add(PhoneBinding)
Catch ex As Exception
MessageBox.Show(ex.Message)
Application.Exit()
End Try
End Sub
Private Sub PhoneBinding_Format(ByVal sender As Object, ByVal e As ConvertEventArgs) Handles PhoneBinding.Format
Dim Ext As String
Dim CurrentRow As DataRowView = CType(Me.BindingContext(EmployeesTable, "Employees").Current, DataRowView)
If (CurrentRow("Extension") Is Nothing) Then
Ext = ""
Else
Ext = CurrentRow("Extension").ToString()
End If
e.Value = e.Value.ToString().Trim() & " x" & Ext
End Sub
Private Sub PhoneBinding_Parse(ByVal sender As Object, ByVal e As ConvertEventArgs) Handles PhoneBinding.Parse
Dim PhoneNumberAndExt As String = e.Value.ToString()
Dim ExtIndex As Integer = PhoneNumberAndExt.IndexOf("x")
Dim Ext As String = PhoneNumberAndExt.Substring(ExtIndex).Trim()
Dim PhoneNumber As String = PhoneNumberAndExt.Substring(0, ExtIndex).Trim()
' Get the current binding object, and set the new extension manually.
Dim CurrentRow As DataRowView = CType(Me.BindingContext(EmployeesTable, "Employees").Current, DataRowView)
' Remove the "x" from the extension.
CurrentRow("Extension") = CObj(Ext.Substring(1))
' Return the phone number.
e.Value = PhoneNumber
End Sub
Private Sub NextButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NextButton.Click
Me.BindingContext(EmployeesTable, "Employees").Position = Me.BindingContext(EmployeesTable, "Employees").Position + 1
End Sub
Private Sub PreviousButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PreviousButton.Click
Me.BindingContext(EmployeesTable, "Employees").Position = Me.BindingContext(EmployeesTable, "Employees").Position - 1
End Sub
End Class
Kod Derleniyor
Visual C# veya Visual Basic projesi oluşturun.
TextBoxVe MaskedTextBox denetimlerini, önceki yordamda açıklandığı gibi forma ekleyin.
Projenin varsayılan formu için kaynak kodu dosyasını açın.
Bu dosyadaki kaynak kodu, önceki "kod" bölümünde listelenen kodla değiştirin.
Uygulamayı derleyin.