LinqDataSourceInsertEventArgs.Exception 属性
定义
获取在执行插入操作之前验证数据时引发的异常。Gets the exception that was thrown while the data was being validated before the insert operation.
public:
property System::Web::UI::WebControls::LinqDataSourceValidationException ^ Exception { System::Web::UI::WebControls::LinqDataSourceValidationException ^ get(); };
public System.Web.UI.WebControls.LinqDataSourceValidationException Exception { get; }
member this.Exception : System.Web.UI.WebControls.LinqDataSourceValidationException
Public ReadOnly Property Exception As LinqDataSourceValidationException
属性值
如果发生错误,则为该异常;否则为 null。The exception, if an error occurred; otherwise, null.
示例
下面的示例演示事件的处理程序 Inserting 。The following example shows a handler for the Inserting event. 它通过使用控件显示任何验证异常消息 Label 。It displays any validation exception messages by using a Label control.
Protected Sub LinqDataSource_Inserting(ByVal sender As Object, _
ByVal e As LinqDataSourceInsertEventArgs)
If (e.Exception IsNot Nothing) Then
For Each innerException As KeyValuePair(Of String, Exception) _
In e.Exception.InnerExceptions
Label1.Text &= innerException.Key & ": " & _
innerException.Value.Message + "<br />"
Next
e.ExceptionHandled = True
End If
End Sub
protected void LinqDataSource_Inserting(object sender,
LinqDataSourceInsertEventArgs e)
{
if (e.Exception != null)
{
foreach (KeyValuePair<string, Exception> innerException in
e.Exception.InnerExceptions)
{
Label1.Text += innerException.Key + ": " +
innerException.Value.Message + "<br />";
}
e.ExceptionHandled = true;
}
}
注解
如果在执行插入操作之前引发验证异常,则该异常将存储在 Exception 属性中。If a validation exception is thrown before the insert operation is performed, the exception is stored in the Exception property. 在事件的处理程序中 Inserting ,可以通过属性检索异常 Exception 。In a handler for the Inserting event, you can retrieve the exception through the Exception property.