GridViewRowEventHandler 代理人

參考

定義

命名空間:: System.Web.UI.WebControls

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。

表示處理 RowCreated 控制項之 RowDataBound 和 GridView 事件的方法。

public delegate void GridViewRowEventHandler(System::Object ^ sender, GridViewRowEventArgs ^ e);

public delegate void GridViewRowEventHandler(object sender, GridViewRowEventArgs e);

type GridViewRowEventHandler = delegate of obj * GridViewRowEventArgs -> unit

Public Delegate Sub GridViewRowEventHandler(sender As Object, e As GridViewRowEventArgs)

參數

sender: Object

事件的來源。

e: GridViewRowEventArgs

包含事件資料的 GridViewRowEventArgs 物件。

範例

下列範例示範如何以程式設計方式將委派新增 GridViewRowEventHandler 至 RowDataBound 控制項的事件 GridView 。


<%@ Page language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  void Page_Load(Object sender, EventArgs e)
  {
        
    // Create a new GridView control.
    GridView customersGridView = new GridView();
         
    // Set the GridView control's properties.
    customersGridView.ID = "CustomersGridView";
    customersGridView.DataSourceID = "CustomersSqlDataSource";
    customersGridView.AutoGenerateColumns = true;
    customersGridView.AllowPaging = true;

    // Programmatically register the event-handling method.
    customersGridView.RowDataBound += new GridViewRowEventHandler(this.CustomersGridView_RowDataBound);
       
    // Add the GridView control to the Controls collection
    // of the PlaceHolder control.
    GridViewPlaceHolder.Controls.Add(customersGridView);

  }

  void CustomersGridView_RowDataBound(Object sender, GridViewRowEventArgs e)
  {
        
    if(e.Row.RowType == DataControlRowType.DataRow)
    {
      // Display the company name in italics.
      e.Row.Cells[1].Text = "<i>" + e.Row.Cells[1].Text + "</i>";
        
    }
    
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridViewRowEventHandler Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridViewRowEventHandler Example</h3>

      <asp:placeholder id="GridViewPlaceHolder"
        runat="server"/>
            
      <!-- This example uses Microsoft SQL Server and connects  -->
      <!-- to the Northwind sample database. Use an ASP.NET     -->
      <!-- expression to retrieve the connection string value   -->
      <!-- from the Web.config file.                            -->
      <asp:sqldatasource id="CustomersSqlDataSource"  
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
        runat="server">
      </asp:sqldatasource>
            
            
    </form>
  </body>
</html>


<%@ Page language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
        
    ' Create a new GridView control.
    Dim customersGridView As New GridView()
         
    ' Set the GridView control's properties.
    customersGridView.ID = "CustomersGridView"
    customersGridView.DataSourceID = "CustomersSqlDataSource"
    customersGridView.AutoGenerateColumns = True
    customersGridView.AllowPaging = True

    ' Programmatically register the event-handling method.
    AddHandler customersGridView.RowDataBound, AddressOf CustomersGridView_RowDataBound
       
    ' Add the GridView control to the Controls collection
    ' of the PlaceHolder control.
    GridViewPlaceHolder.Controls.Add(customersGridView)

  End Sub

  Sub CustomersGridView_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
        
    If e.Row.RowType = DataControlRowType.DataRow Then
    
      ' Display the company name in italics.
      e.Row.Cells(1).Text = "<i>" & e.Row.Cells(1).Text & "</i>"
        
    End If
    
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridViewRowEventHandler Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridViewRowEventHandler Example</h3>

      <asp:placeholder id="GridViewPlaceHolder"
        runat="server"/>
            
      <!-- This example uses Microsoft SQL Server and connects  -->
      <!-- to the Northwind sample database. Use an ASP.NET     -->
      <!-- expression to retrieve the connection string value   -->
      <!-- from the Web.config file.                            -->
      <asp:sqldatasource id="CustomersSqlDataSource"  
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
        runat="server">
      </asp:sqldatasource>
            
            
    </form>
  </body>
</html>

下列範例示範如何以宣告方式將委派新增 GridViewRowEventHandler 至 RowDataBound 控制項的事件 GridView 。


<%@ Page language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  void CustomersGridView_RowDataBound(Object sender, GridViewRowEventArgs e)
  {
        
    if(e.Row.RowType == DataControlRowType.DataRow)
    {
      // Display the company name in italics.
      e.Row.Cells[1].Text = "<i>" + e.Row.Cells[1].Text + "</i>";
        
    }
    
  }

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridView RowDataBound Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView RowDataBound Example</h3>

      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSqlDataSource" 
        autogeneratecolumns="true"
        allowpaging="true"
        onrowdatabound="CustomersGridView_RowDataBound" 
        runat="server">
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects  -->
      <!-- to the Northwind sample database. Use an ASP.NET     -->
      <!-- expression to retrieve the connection string value   -->
      <!-- from the Web.config file.                            -->
      <asp:sqldatasource id="CustomersSqlDataSource"  
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
        runat="server">
      </asp:sqldatasource>
            
            
    </form>
  </body>
</html>


<%@ Page language="VB" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Sub CustomersGridView_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)

    If e.Row.RowType = DataControlRowType.DataRow Then
    
      ' Display the company name in italics.
      e.Row.Cells(1).Text = "<i>" & e.Row.Cells(1).Text & "</i>"
        
    End If
    
  End Sub

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridView RowDataBound Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView RowDataBound Example</h3>

      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSqlDataSource" 
        autogeneratecolumns="true"
        allowpaging="true"
        onrowdatabound="CustomersGridView_RowDataBound" 
        runat="server">
      </asp:gridview>
            
      <!-- This example uses Microsoft SQL Server and connects  -->
      <!-- to the Northwind sample database. Use an ASP.NET     -->
      <!-- expression to retrieve the connection string value   -->
      <!-- from the Web.config file.                            -->
      <asp:sqldatasource id="CustomersSqlDataSource"  
        selectcommand="Select [CustomerID], [CompanyName], [Address], [City], [PostalCode], [Country] From [Customers]"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
        runat="server">
      </asp:sqldatasource>
            
            
    </form>
  </body>
</html>

備註

GridView必須先為控制項中的每個資料列建立物件， GridViewRow 才能轉譯控制項。每次 RowCreated 建立控制項中的資料 GridView 列時，就會引發事件。這可讓您提供事件處理方法，以執行自訂常式，例如，每當發生此事件時，將自訂內容新增至資料列。

同樣地，控制項中的每個資料列都必須系結至資料來源 GridView 中的記錄，才能轉譯控制項。 RowDataBound當) 物件所表示 GridViewRow 的資料列 (系結至控制項中的資料 GridView 時，就會引發事件。這可讓您提供執行自訂常式的事件處理方法，例如，每當發生此事件時修改系結至資料列的資料值。

建立 GridViewRowEventHandler 委派時，必須識別處理事件的方法。若要使事件與您的事件處理常式產生關聯，請將委派的執行個體 (Instance) 加入至事件。除非您移除委派，否則每當事件發生時就會呼叫事件處理常式。如需事件處理常式委派的詳細資訊，請參閱處理和引發事件。

擴充方法

GetMethodInfo(Delegate)

取得表示特定委派所代表之方法的物件。

適用於

共用方式為

GridViewRowEventHandler 代理人

定義

參數

範例

備註

擴充方法

適用於

另請參閱

其他資源