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Michael
1690
XamGrid and Commanding Framework
posted

Hello,

I would like to create two commands that will take as parameter a XamGrid and

1) Show the columnchooser for that grid

2) Export data to excel..

Those commands should be invoked by a context menu item or a simple button or a ribbon tool or whatever element is supported by the commanding framework.

I have tried to do so, but with no success...

Is it that difficult?

What am i missing?

Regards,

Michael

Parents
  • 40030
    Offline posted

    Hi Michael. 

    Here is a quick walkthrough on how to do this for the column chooser, excel exporting would be basically the same. 

    1. Implement ICommandTarget on your UserControl:

    public partial class MainPage : UserControl, ICommandTarget

    2.  in the SupportsCommand method, return true for any command that you want to support:

     bool ICommandTarget.SupportsCommand(ICommand command)

            {

                return command is OpenColumnChooserCommand;

            }

    3. in the GetParameter method, return what object you want to perform an action on, in this case the xamGrid:

    object ICommandTarget.GetParameter(Infragistics.Controls.CommandSource source)

            {

                return grid;

            }

     

    4. Create a CommandSource class, this will be used to hook the event up to your button:

     public class MyGridCommands : CommandSource

        {

            protected override ICommand ResolveCommand()

            {

                return new OpenColumnChooserCommand();

            }

        }

    5. Implement the command

    public class OpenColumnChooserCommand : CommandBase

        {

            public override bool CanExecute(object parameter)

            {

                if (parameter is XamGrid)

                    return true;

     

                return false;

            }

     

            public override void Execute(object parameter)

            {

                XamGrid grid = parameter as XamGrid;

                if (grid != null)

                    grid.ShowColumnChooser();

            }

        }

    6. Finally, hook up your command to your button:

    <Button Content="Column Chooser">

                        <ig:Commanding.Command>

                            <local:MyGridCommands EventName="Click" >

                            </local:MyGridCommands>

                        </ig:Commanding.Command>

                    </Button>

    Hope this helps simplify things.

    -SteveZ

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