LinqDataSourceInsertEventArgs Class
Provides data for the Inserting event.
System::EventArgs
System.ComponentModel::CancelEventArgs
System.Web.UI.WebControls::LinqDataSourceInsertEventArgs
Assembly: System.Web.Extensions (in System.Web.Extensions.dll)
The LinqDataSourceInsertEventArgs type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | LinqDataSourceInsertEventArgs(LinqDataSourceValidationException) | Initializes a new instance of the LinqDataSourceInsertEventArgs class and specifies the provided exception. |
![]() | LinqDataSourceInsertEventArgs(Object) | Initializes a new instance of the LinqDataSourceInsertEventArgs class. |
| Name | Description | |
|---|---|---|
![]() | Cancel | Gets or sets a value indicating whether the event should be canceled. (Inherited from CancelEventArgs.) |
![]() | Exception | Gets the exception that was thrown while the data was being validated before the insert operation. |
![]() | ExceptionHandled | Gets or sets a value that indicates whether the exception was handled and that it should not be thrown again. |
![]() | NewObject | Gets the object that contains the data to insert. |
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
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 nullptr. 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.
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;
}
}
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.


