LinqDataSourceUpdateEventArgs.Exception Property

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.Extensions.dll

Important

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Gets the exception that was thrown while the data was being validated before the update 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

Property Value

LinqDataSourceValidationException

The exception, if an error occurred; otherwise, null.

Examples

The following example shows an event handler for the Updating event. It displays any validation exception messages by using a Label control.

Protected Sub LinqDataSource_Updating(ByVal sender As Object, _  
        ByVal e As LinqDataSourceUpdateEventArgs)  
    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_Updating(object sender,   
        LinqDataSourceUpdateEventArgs 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;  
    }  
}

Remarks

If a validation exception is raised before the update operation is performed, the exception is stored in the Exception property. In an event handler for the Updating event, you can retrieve the exception through the Exception property.

Applies to

Product	Versions
.NET Framework	3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

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