GridBoundColumn to GridDropDownColumn

[Duncan Evans]

I have a RadGrid with AutoGenerated GridBoundColumns.

This works great, however i am trying to make one of these columns a GridDropDownColumn from the ColumnCreated() event. I can't find any examples of this anywhere. This post: http://www.telerik.com/help/aspnet/grid/grdcustomizeconfiguregriddropdowncolumn.html is not helping me very much being that all my columns are GridBoundColumns, i have no GridDropDownColumns and (GridDropDownListColumnEditor)(editMan.GetColumnEditor()) fails every time.

Can someone tell me how to set a GridBoundColumn as a GridDropDownColumn?

Thanks,

Duncan

[Princy]

Hi,

You can add a dynamically created  DropDownlist in the ItemCreated event of the grid,  to the Controls  collections of the required column in th edit mode as shown below:

protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)
    {
          if ((e.Item is GridEditableItem) && (e.Item.IsInEditMode))
        {
            GridEditableItem editForm = (GridEditableItem)e.Item;
            editForm["ColumnUniqueName"].Controls[0].Visible = false;
            DropDownList list=new DropDownList();
            list.ID = "DropDownList1";
            list.Items.Add("Item1");
            list.Items.Add("Item1");
            list.Items.Add("Item1");
            editForm["ColumnUniqueName"].Controls.Add(list);
        }

    }

Thanks,
Princy

[Duncan Evans]

Great that seems to work, but how to si set the SelectedValue to the value of the row being edited?

[Princy]

Hello Duncan,

You can check out the following example to achieve the required:
c#:

protected void RadGrid1_ItemCreated(object sender, GridItemEventArgs e)
    {
          if ((e.Item is GridEditableItem) && (e.Item.IsInEditMode))
        {
            GridEditableItem editForm = (GridEditableItem)e.Item;
            editForm["ColumnUniqueName"].Controls[0].Visible = false;
            DropDownList list=new DropDownList();
            list.ID = "DropDownList1";
            editForm["ColumnUniqueName"].Controls.Add(list);
            list.DataSourceID = "SqlDataSource1";
            list.DataTextField = "ProductName";
            list.DataValueField = "ProductName";
            list.DataBind();
        }
    }


protected void RadGrid1_ItemDataBound(object sender, GridItemEventArgs e)
    {
        if ((e.Item is GridEditableItem) && (e.Item.IsInEditMode))
        {
            GridEditableItem editForm = (GridEditableItem)e.Item;
            ((DropDownList)editForm["ColumnUniqueName"].FindControl("DropDownList1")).SelectedValue = DataBinder.Eval(editForm.DataItem, "ProductName").ToString();

        }
   }

Thanks
Princy.