Freigeben über


ICellProvider.CellReady-Ereignis

HINWEIS: Diese API ist veraltet.

Tritt auf, wenn eine Zelle ändert, beispielsweise, wenn eine Zelle ausgewählt oder aktualisiert wird.

Namespace:  Microsoft.SharePoint.WebPartPages.Communication
Assembly:  Microsoft.SharePoint (in Microsoft.SharePoint.dll)

Syntax

'Declaration
<ObsoleteAttribute("Use System.Web.UI.WebControls.WebParts.IWebPartField instead")> _
Event CellReady As CellReadyEventHandler
'Usage
Dim instance As ICellProvider
Dim handler As CellReadyEventHandler

AddHandler instance.CellReady, handler
[ObsoleteAttribute("Use System.Web.UI.WebControls.WebParts.IWebPartField instead")]
event CellReadyEventHandler CellReady

Hinweise

Das Ereignis CellReady sollte auch den Anfangswert der Zelle gegebenenfalls senden verwendet werden. Das CellReady -Ereignis tritt jedes Mal, wenn der Ereignishandler PartCommunicationMain ausgeführt wird. Für clientseitige Verbindungen kann das Ereignis CellReady jederzeit und überall auftreten, nachdem PartCommunicationMain ausgeführt wurde.

Beispiele

Das folgende Codebeispiel zeigt eine überschriebene PartCommunicationMain -Methode, die eine CellReadyEventArgs -Datenstruktur, um den Wert die angegebene Zelle enthalten erstellt der Wert der Zelle festgelegt und anschließend wird das CellReady -Ereignis ausgelöst. Dieses Codebeispiel ist Teil eines umfangreicheren Beispiels für die ICellProvider -Schnittstelle.

      ' Step #10: Override the PartCommunicationMain() method.
      ' The PartCommunicationMain method is called by the Web Part 
      ' infrastructure on the client during 
      ' the ASP.Net PreRender event to allow the part to pass its 
      ' primary data to the other connected parts.
      ' It is important to always fire the CellReady event. Some parts
      ' may not behave properly if they are left waiting for this 
      ' information.
      Public Overrides Sub PartCommunicationMain()
            ' Check if connected.
            If _connected Then
                ' Create the CellReadyEventArgs data structure for the 
                ' CellProviderInit event.
                Dim cellReadyArgs As New CellReadyEventArgs()

                ' If the user clicked the button, then send the value.
                If _cellClicked Then
                    ' Set the cell to the value of the TextBox text
                    ' This is the value that will be sent to the 
                    ' Consumer
                    cellReadyArgs.Cell = _cellInput.Text
                Else
                    ' The user didn't actually click the button
                    ' so just send an empty string to the consumer.
                    cellReadyArgs.Cell = ""
                End If

                ' Fire the CellReady event.
                ' The Consumer will receive the cell value in its 
                ' CellReady event handler
                RaiseEvent CellReady(Me, cellReadyArgs)
            End If
        End Sub
// Step #10: Override the PartCommunicationMain() method.
// The PartCommunicationMain method is called by the Web Part 
// infrastructure on the client during 
// the ASP.Net PreRender event to allow the part to pass its primary 
// data to the other connected parts.
// It is important to always fire the CellReady event. Some parts
// may not behave properly if they are left waiting for this 
// information.
public override void PartCommunicationMain()
{
    // Check if connected.
    if(_connected)
    {
        // If there is a listener, fire the CellReady event.
        if (CellReady != null)
        {
            // Create the CellReadyEventArgs data structure for the 
            // CellProviderInit event.
            CellReadyEventArgs cellReadyArgs = new 
               CellReadyEventArgs();

            // If the user clicked the button, then send the value.
            if (_cellClicked)
            {
                // Set the cell to the value of the TextBox text.
                // This is the value that will be sent to the Consumer
                cellReadyArgs.Cell = _cellInput.Text;
            }
            else
            {
                // The user didn't actually click the button
                // so just send an empty string to the consumer.
                cellReadyArgs.Cell = "";
            }

            // Fire the CellReady event.
            // The Consumer will receive the cell value in its 
            // CellReady event handler
            CellReady(this, cellReadyArgs);
        }
    }
}

Siehe auch

Referenz

ICellProvider Schnittstelle

ICellProvider-Member

Microsoft.SharePoint.WebPartPages.Communication-Namespace