LinqDataSourceInsertEventArgs Class

Provides data for the Inserting event.

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

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

public class LinqDataSourceInsertEventArgs : CancelEventArgs

The LinqDataSourceInsertEventArgs type exposes the following members.

  NameDescription
Public methodLinqDataSourceInsertEventArgs(LinqDataSourceValidationException)Initializes a new instance of the LinqDataSourceInsertEventArgs class and specifies the provided exception.
Public methodLinqDataSourceInsertEventArgs(Object)Initializes a new instance of the LinqDataSourceInsertEventArgs class.
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  NameDescription
Public propertyCancelGets or sets a value indicating whether the event should be canceled. (Inherited from CancelEventArgs.)
Public propertyExceptionGets the exception that was thrown while the data was being validated before the insert operation.
Public propertyExceptionHandledGets or sets a value that indicates whether the exception was handled and that it should not be thrown again.
Public propertyNewObjectGets the object that contains the data to insert.
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  NameDescription
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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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;
    }
}

.NET Framework

Supported in: 4, 3.5

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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