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LinqDataSourceInsertEventArgs Class

Provides data for the Inserting event.

Namespace:  System.Web.UI.WebControls
Assembly:  System.Web.Extensions (in System.Web.Extensions.dll)

[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
[AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public class LinqDataSourceInsertEventArgs : CancelEventArgs

The LinqDataSourceInsertEventArgs object is passed to any event handler for the Inserting event. The NewObject property contains the data that will be inserted.

You can use the LinqDataSourceInsertEventArgs object to examine the data before the insert operation is executed in the data source. You can then validate the data, examine validation errors from the data class, or change a value before the update. You can also cancel the insert operation.

If the object that represents the data source throws a validation exception before it inserts the data, the Exception property contains an instance of the LinqDataSourceValidationException class. You can retrieve all the validation exceptions through the InnerExceptions property. If no validation exception is thrown, the Exception property contains null. If you handle the validation exceptions and do not want the exception to be re-thrown, set the ExceptionHandled property to true.

The following example shows a handler for the Inserting event. The object from the NewObject property is cast to a type named Product. The DateModified property of the Product object is set to the current date and time.

protected void LinqDataSource_Inserting(object sender, LinqDataSourceInsertEventArgs e)
{
    Product product = (Product)e.NewObject;
    product.DateModified = DateTime.Now;
}

The following example shows an event handler for the Inserting event. 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

[C#]

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;
    }
}

System.Object
  System.EventArgs
    System.ComponentModel.CancelEventArgs
      System.Web.UI.WebControls.LinqDataSourceInsertEventArgs

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5

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