Cannot convert lambda expression to type 'System.Delegate' because it is not a delegate type in wpf

Question

public void loadtemplist(DataTable dt)
    {
      this.Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle,

          (Delegate) (() => this.loadtemplist1(dt))   //error


          );
    }

and

public void loadtemplist1(DataTable dt)
    {

-----
-----

}

the above code throws Cannot convert lambda expression to type 'System.Delegate' because it is not a delegate type

toadflakz · Accepted Answer · 2014-09-11 10:33:25Z

1

You can't convert an anonymous method straight to a System.Delegate - you need to wrap it in an Action first.

Try this instead:

public void loadtemplist(DataTable dt)
{
  this.Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle,

      new Action(() => { this.loadtemplist1(dt); } )
      );
}

answered Sep 11, 2014 at 10:33

toadflakz

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Comments

Enrico Sada · Accepted Answer · 2014-09-11 10:35:37Z

0

you should do

this.Dispatcher.BeginInvoke(DispatcherPriority.ApplicationIdle, 
                            new Action(() => this.loadtemplist1(dt)) );

see demo: https://dotnetfiddle.net/nz9xxD

answered Sep 11, 2014 at 10:35

Enrico Sada

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