RadGridview : CustomCell Replicates in other Cell when Scrolling

[Deepak Chauhan]

I was able to create Customcell element from the following post.
http://www.telerik.com/community/forums/winforms/gridview/show-mulitple-images-in-a-gridview-column.aspx

But when I perform scroll in Gridview, the same CustomCell with 3 Buttons replicate itself in other cells.
Here is my code for CreateCell Event.

private void gvProductDetail_CreateCell(object sender, GridViewCreateCellEventArgs e)
        {
            if (e.Column.GetType().Name == "GridViewCommandColumn")
            {
                GridViewCommandColumn dataColumn = e.Column as GridViewCommandColumn;


                if (e.Row is GridDataRowElement && dataColumn != null)
                {
                    CustomGridDataCell cell = new CustomGridDataCell(e.Column, e.Row);
                    e.CellElement = cell;
                }
            }
        }

Please guide Me. Thanks in Advance.

[Svett]

Hello Deepak,

I assume that the issue is caused by the fact that you have more than one command column and you want to apply custom cell only for one of them. In that case, I recommend creating a custom column which will address this misbehavior:

public class GridMultiCommandColumn : GridViewDataColumn
    {
        public GridMultiCommandColumn()
            : base()
        {
            this.ReadOnly = true;
        }

        public GridMultiCommandColumn(string fieldName)
            : base(fieldName)
        {

        }

        public GridMultiCommandColumn(string uniqueName, string fieldName)
            : base(uniqueName, fieldName)
        {

        }

        public override Type GetCellType(GridViewRowInfo row)
        {
            if (row is GridViewDataRowInfo)
            {
                return typeof(CustomGridDataCell);
            }

            return base.GetCellType(row);
        }
    }

In addition, you should override the IsCompatible method of the custom cell in the following way:

public override bool IsCompatible(GridViewColumn data, object context)
{
        return data is GridMultiCommandColumn && context is GridDataRowElement;
}

Note that in this approach, you do not need to use the CreateCell event. You should use the custom column instead of the GridViewCommandColumn. All the best,
Svett
the Telerik team