通过

GridView.RowUpdated 事件

  • 参考

定义

命名空间:
System.Web.UI.WebControls
程序集:
System.Web.dll

发生在单击某一行的“更新”按钮，并且 GridView 控件对该行进行更新之后。

public:
 event System::Web::UI::WebControls::GridViewUpdatedEventHandler ^ RowUpdated;
public event System.Web.UI.WebControls.GridViewUpdatedEventHandler RowUpdated;
member this.RowUpdated : System.Web.UI.WebControls.GridViewUpdatedEventHandler 
Public Custom Event RowUpdated As GridViewUpdatedEventHandler

事件类型

GridViewUpdatedEventHandler

示例

以下示例演示如何使用 RowUpdated 事件检查更新操作的结果。 将显示一条消息，向用户指示操作是否成功。


<%@ 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_RowUpdated(Object sender, GridViewUpdatedEventArgs e)
  {
    
    // Indicate whether the update operation succeeded.
    if(e.Exception == null)
    {
      Message.Text = "Row updated successfully.";
    }
    else
    {
      e.ExceptionHandled = true;
      Message.Text = "An error occurred while attempting to update the row.";
    }
    
  }

  void CustomersGridView_RowCancelingEdit(Object sender, GridViewCancelEditEventArgs e)
  {
        
    // The update operation was canceled. Clear the message label.
    Message.Text = "";
    
  }

  void CustomersGridView_RowEditing(Object sender, GridViewEditEventArgs e)
  {
    // The GridView control is entering edit mode. Clear the message label.
    Message.Text = "";
  }
    

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridView RowUpdated Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView RowUpdated Example</h3>
            
      <asp:label id="Message"
        forecolor="Red"          
        runat="server"/>
                
      <br/>
            
      <!-- The GridView control automatically sets the columns     -->
      <!-- specified in the datakeynames property as read-only.    -->
      <!-- No input controls are rendered for these columns in     -->
      <!-- edit mode.                                              -->
      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSqlDataSource" 
        autogeneratecolumns="true"
        autogenerateeditbutton="true"
        allowpaging="true" 
        datakeynames="CustomerID"
        onrowupdated="CustomersGridView_RowUpdated"
        onrowcancelingedit="CustomersGridView_RowCancelingEdit"
        onrowediting="CustomersGridView_RowEditing"   
        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]"
        updatecommand="Update Customers SET CompanyName=@CompanyName, Address=@Address, City=@City, PostalCode=@PostalCode, Country=@Country WHERE (CustomerID = @CustomerID)"
        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_RowUpdated(ByVal sender As Object, ByVal e As GridViewUpdatedEventArgs)
    
    ' Indicate whether the update operation succeeded.
    If e.Exception Is Nothing Then
    
      Message.Text = "Row updated successfully."
    
    Else
    
      e.ExceptionHandled = True
      Message.Text = "An error occurred while attempting to update the row."
    
    End If
    
  End Sub

  Sub CustomersGridView_RowCancelingEdit(ByVal sender As Object, ByVal e As GridViewCancelEditEventArgs)
        
    ' The update operation was canceled. Clear the message label.
    Message.Text = ""
    
  End Sub

  Sub CustomersGridView_RowEditing(ByVal sender As Object, ByVal e As GridViewEditEventArgs)
  
    ' The GridView control is entering edit mode. Clear the message label.
    Message.Text = ""
    
  End Sub
    

</script>

<html xmlns="http://www.w3.org/1999/xhtml" >
  <head runat="server">
    <title>GridView RowUpdated Example</title>
</head>
<body>
    <form id="form1" runat="server">
        
      <h3>GridView RowUpdated Example</h3>
            
      <asp:label id="Message"
        forecolor="Red"          
        runat="server"/>
                
      <br/>
            
      <!-- The GridView control automatically sets the columns     -->
      <!-- specified in the datakeynames property as read-only.    -->
      <!-- No input controls are rendered for these columns in     -->
      <!-- edit mode.                                              -->
      <asp:gridview id="CustomersGridView" 
        datasourceid="CustomersSqlDataSource" 
        autogeneratecolumns="true"
        autogenerateeditbutton="true"
        allowpaging="true" 
        datakeynames="CustomerID"
        onrowupdated="CustomersGridView_RowUpdated"
        onrowcancelingedit="CustomersGridView_RowCancelingEdit"
        onrowediting="CustomersGridView_RowEditing"   
        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]"
        updatecommand="Update Customers SET CompanyName=@CompanyName, Address=@Address, City=@City, PostalCode=@PostalCode, Country=@Country WHERE (CustomerID = @CustomerID)"
        connectionstring="<%$ ConnectionStrings:NorthWindConnectionString%>"
        runat="server">
      </asp:sqldatasource>
            
    </form>
  </body>
</html>

注解

单击 RowUpdated 行的“更新”按钮时，但在控件更新行之后 GridView ，将引发 该事件。 这使你能够提供一个事件处理方法，该方法在发生此事件时执行自定义例程，例如检查更新操作的结果。

对象 GridViewUpdatedEventArgs 将传递给事件处理方法，这使你可以确定受影响的行数以及可能发生的任何异常。 还可以通过设置 ExceptionHandled 对象的 属性来指示是否在事件处理方法中处理了 GridViewUpdatedEventArgs 异常。

有关如何处理事件的详细信息，请参阅 处理和引发事件。

适用于

另请参阅