ListReadyEventArgs.List Property
NOTE: This API is now obsolete.
Gets or sets the list provided by a Web Part that implements the IListProvider interface when the ListReadyevent occurs.
Namespace: Microsoft.SharePoint.WebPartPages.Communication
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Syntax
'Declaration
<ObsoleteAttribute("Use System.Web.UI.WebControls.WebParts.IWebPartTable instead")> _
Public Property List As DataTable
Get
Set
'Usage
Dim instance As ListReadyEventArgs
Dim value As DataTable
value = instance.List
instance.List = value
[ObsoleteAttribute("Use System.Web.UI.WebControls.WebParts.IWebPartTable instead")]
public DataTable List { get; set; }
Property Value
Type: System.Data.DataTable
A System.Data.DataTable that contains the provided list of data.
Examples
The following code example shows an overridden WebPart.PartCommunicationMainmethod that uses the List property to set the list of data provided by this Web Part. This code example is part of a larger example provided for the IListProvider interface.
' Step #8: Override the PartCommunicationMain method.
' The PartCommunicationMain method is called by the Web Part Infrastructure
' on the client during the ASP.NET PreRender
' phase to allow the part to pass its primary data to the other
' connected parts.
' It is important to always fire the ListReady or PartialListReady
' event. Some parts may not behave properly if they are left waiting
' for this information.
Public Overrides Sub PartCommunicationMain()
' Ensure that all of the Web Part's controls are created.
EnsureChildControls()
'Check if connected
If _connected Then
' If there is a listener, fire the ListReady event.
If Not (ListReady Is Nothing) Then
' Create the ListReadyEventArgs object for the ListProviderInit event.
Dim listReadyArgs As New ListReadyEventArgs()
' If user clicked button, send the value.
If _listButtonClicked Then
' Set the List to the value of the table in the DataGrid.
' This is the value that will be sent to the consumer Web
' Part.
listReadyArgs.List = CType(_dataGrid.DataSource, DataTable)
Else
' The user didn't click the button, so send a
' null DataTable to the consumer Web Part.
listReadyArgs.List = Nothing
End If
' Fire the ListReady event.
' The consumer Web Part will receive the DataTable.
' The consumer Web Part will receive the DataTable.
ListReady(Me, listReadyArgs)
End If
End If
End Sub 'PartCommunicationMain
// Step #8: Override the PartCommunicationMain method.
// The PartCommunicationMain method is called by the Web Part
// Infrastructure on the client during the ASP.NET PreRender
// phase to allow the part to pass its primary data to the other
// connected parts. It is important to always fire the ListReady or
// PartialListReady event. Some parts may not behave properly if they
// are left waiting for this information.
public override void PartCommunicationMain()
{
// Ensure that all of the Web Part's controls are created.
EnsureChildControls();
//Check if connected
if(_connected)
{
// If there is a listener, fire the ListReady event.
if (ListReady != null)
{
// Create the ListReadyEventArgs object for the
// ListProviderInit event.
ListReadyEventArgs listReadyArgs = new ListReadyEventArgs();
// If user clicked button, send the value.
if (_listButtonClicked)
{
// Set the List to the value of the table in the
// DataGrid. This is the value that will be sent to the
// consumer Web Part.
listReadyArgs.List = ((DataTable)_dataGrid.DataSource);
}
else
{
// The user didn't click the button, so send a
// null DataTable to the consumer Web Part.
listReadyArgs.List = null;
}
// Fire the ListReady event.
// The consumer Web Part will receive the DataTable.
ListReady(this, listReadyArgs);
}
}
}