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InitEventArgs Class

NOTE: This API is now obsolete.

Represents the object type returned by the WebPart.GetInitEventArgs method.

Inheritance Hierarchy

System.Object
  System.EventArgs
    Microsoft.SharePoint.WebPartPages.Communication.InitEventArgs
      Microsoft.SharePoint.WebPartPages.Communication.CellConsumerInitEventArgs
      Microsoft.SharePoint.WebPartPages.Communication.CellProviderInitEventArgs
      Microsoft.SharePoint.WebPartPages.Communication.FilterConsumerInitEventArgs
      Microsoft.SharePoint.WebPartPages.Communication.ListProviderInitEventArgs
      Microsoft.SharePoint.WebPartPages.Communication.ParametersInConsumerInitEventArgs
      Microsoft.SharePoint.WebPartPages.Communication.ParametersOutProviderInitEventArgs
      Microsoft.SharePoint.WebPartPages.Communication.RowProviderInitEventArgs

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

Syntax

<ObsoleteAttribute("Use ConnectionProvider or ConnectionConsumer attribute to create ConnectionPoint instead.")> _
Public Class InitEventArgs _
    Inherits EventArgs

Dim instance As InitEventArgs
[ObsoleteAttribute("Use ConnectionProvider or ConnectionConsumer attribute to create ConnectionPoint instead.")]
public class InitEventArgs : EventArgs

Examples

The following code example shows an overridden GetInitEventArgs method that returns an instance of the InitEventArgs class. This code example is part of a larger example provided for the IFilterConsumer interface.

' Step #8: Override the GetInitEventArgs method.
' GetInitEventArgs() is called by the Web Part infrastructure during 
' the ASP.NET PreRender event to gather the 
' necessary information it needs to build the transformer dialog. The 
' transformer dialog is needed when connecting different interfaces 
' such as IRowProvider to ICellConsumer. The transformer dialog allows 
' the user to map the fields between the interfaces. The 
' GetInitEventArgs()method only needs to be implemented for interfaces 
' that can participate in a transformer which are the following:
' ICellConsumer, IRowProvider, IFilterConsumer, IParametersOutProvider, 
' IParametersInConsumer.
' <param name="interfacename">Name of interface on which the Web Part 
' infrastructure is requesting information</param>
' <returns>An InitEventArgs object</returns>
Public Overrides Function GetInitEventArgs(interfaceName As String) As InitEventArgs
   ' Check if this is my particular cell interface.
   If interfaceName = "MyFilterConsumerInterface" Then
      'Ensure that all of the Web Part's controls are created.
      'The _filterFieldNames and _filterFieldDisplayNames are set during EnsureChildControls()
      EnsureChildControls()
          
      ' Create the FilterConsumerInitEventArgs object for the FilterConsumerInit event.
      Dim filterConsumerInitArgs As New FilterConsumerInitEventArgs()
            
      ' Set the field names
      filterConsumerInitArgs.FieldList = _filterFieldNames
      filterConsumerInitArgs.FieldDisplayList = _filterFieldDisplayNames
            
      ' return the FilterConsumerInitEventArgs. 
      Return filterConsumerInitArgs
   Else
      Return Nothing
   End If
End Function
// Step #8: Override the GetInitEventArgs method.
// GetInitEventArgs() is called by the Web Part infrastructure during 
// the ASP.NET PreRender event to gather the 
// necessary information it needs to build the transformer dialog. The 
// transformer dialog is needed when connecting different interfaces 
// such as IRowProvider to ICellConsumer. The transformer dialog allows 
// the user to map the fields between the interfaces. The 
// GetInitEventArgs()method only needs to be implemented for interfaces 
// that can participate in a transformer which are the following:
// ICellConsumer, IRowProvider, IFilterConsumer, 
// IParametersOutProvider, IParametersInConsumer.
// <param name="interfacename">Name of interface on which the Web Part 
// infrastructure is requesting information</param>
// <returns>An InitEventArgs object</returns>
public override InitEventArgs GetInitEventArgs(string interfaceName)
{
    // Check if this is my particular cell interface.
    if (interfaceName == "MyFilterConsumerInterface")
    {
        //Ensure that all of the Web Part's controls are created.
        //The _filterFieldNames and _filterFieldDisplayNames are set 
        //during EnsureChildControls()
        EnsureChildControls();

        // Create the FilterConsumerInitEventArgs object for the 
        // FilterConsumerInit event.
        FilterConsumerInitEventArgs filterConsumerInitArgs = new FilterConsumerInitEventArgs();
                    
        // Set the field names
        filterConsumerInitArgs.FieldList = _filterFieldNames;
        filterConsumerInitArgs.FieldDisplayList = _filterFieldDisplayNames;
            
        // return the FilterConsumerInitEventArgs. 
        return(filterConsumerInitArgs);
    }
    else
    {
        return(null);
    }
}

Thread Safety

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

See Also

Reference

InitEventArgs Members

Microsoft.SharePoint.WebPartPages.Communication Namespace