Key Capturing & Handling

[Marco Studer]

I am trying to capture the arrow keys in order to increment my data by a certain value. This works perfectly well using CurrentCellPreviewKeyDown. However, the arrow keys are also used for navigation. I am setting Handled = true after I captured the arrow keys but still the navigation does not stop.

How do I handle these keys correctly, so that the selection is not going to move when hitting the arrow keys?

[Kanimozhi Bharathi]

Hi Marco Studer, 

 

Thank you for contacting Syncfusion Support. 

 

You can cancel the navigation while pressing arrow keys in GridControl by using CurrentCellPreviewKeyDown Event of GridControl like below code example 

 

 

grid.CurrentCellPreviewKeyDown += grid_CurrentCellPreviewKeyDown; 

 

void grid_CurrentCellPreviewKeyDown(object sender, GridCellKeyEventArgs args) 

{ 

     if(args.Key == Key.Down || args.Key == Key.Up || args.Key == Key.Left || args.Key == Key.Right) 

        args.Cancel = true; 

} 

 

Regards 

Kanimozhi B 

[Marco Studer]

Thank you very much, work like a charm!

[Kanimozhi Bharathi]

Hi Marco Studer, 

Thank you for your update. 

Regards 

Kanimozhi B 

[Krzysztof]

How to get the same but only on an active cell, e.g. to block the change of value in CellType = "IntegerEdit"?

[Arulpriya Ramalingam]

Hi Krzysztof, 

 

Thank you for using syncfusion products. 

 

CellType of current cell can be checked to restrict the up/down or right/left key functions and the current cell can be moved based on corresponding pressed key by using the MoveCurrentCellWithArrowKey() method. Please make use of below code and sample. 

 

Example code 

 

//Event subscription 

grid.CurrentCellPreviewKeyDown += grid_CurrentCellPreviewKeyDown; 

//Event customization 

private void grid_CurrentCellPreviewKeyDown(object sender, GridCellKeyEventArgs args) 

{ 

    GridCurrentCell currentCell = grid.CurrentCell; 

    if (grid.Model[currentCell.RowIndex, currentCell.ColumnIndex].CellType == "IntegerEdit" && 

        (args.Key == Key.Down || args.Key == Key.Up || args.Key == Key.Left || args.Key == Key.Right)) 

    { 

        args.Cancel = true; 

        //To Move current cell as per other cells arrow key behavior. 

        grid.MoveCurrentCellWithArrowKey(args.KeyEventArgs); //NOTE: this can  be added only if needed. 

    } 

} 

 

Sample link: https://www.syncfusion.com/downloads/support/directtrac/general/ze/IntegerEdit318256897  

 

Please get back to us, if you need any assistance. 

 

Regards, 

Arulpriya