[Solved] Problem with cascading dropdown in radgrid

[Gnanadeep]

Hello,

I need to insert user's details into a table using radgrid.
I need to enter state and country of the user.
So, in Add new record -> I should be able to filter states based on countries using 2 dropdownlists.

So, in the selected index changed event of the country dropdown - i should able to find the both the dropdown controls.
But I am not able to do that. Only null is coming in that.

please, provide me a solution as soon as possible.

Since, I am not saving after selecting country, I suppose the radgrid events may not work in this scenario. I cannot write code in item created or itemdatabound.,, etc.,,..

please check the below image to have an idea... here district and schools are cascading dropdown's
http://i45.tinypic.com/117bdz6.jpg

Thanks in advance,
Gnanadeep

[Princy]

Hi,

In order to find the drop down  on SelectedIndexChanged of another dropdown in the Insert form ,use the NamingContainer as shown below:

C#

protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        GridEditFormInsertItem insertItem = (GridEditFormInsertItem)(sender as DropDownList).NamingContainer;
        DropDownList ddlList =(DropDownList)insertItem.FindControl("Dropdownlist2");

    }

Hope this helps.

Thanks,

Princy

[Gnanadeep]

Thanks for the quick reply..

But using this, EDIT RECORD won't work.
Can you give me a solution that works in both cases.

Any how thanks for the help.

Best Regards,
Gnanadeep

[Princy]

Hi,

You can use the IsItemInserted property to check whether the grid is in insert mode in the dropdownlist SelectedIndexChanged event  as shown  below:

C#

        protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (RadGrid1.MasterTableView.IsItemInserted != false)
            {
                GridEditFormInsertItem insertItem = (GridEditFormInsertItem)(sender as DropDownList).NamingContainer;
                DropDownList ddlList = (DropDownList)insertItem.FindControl("Dropdownlist2");
            }
            else
            {
                GridEditableItem editedItem = (GridEditableItem)(sender as DropDownList).NamingContainer;
                DropDownList ddlList = (DropDownList)editedItem.FindControl("Dropdownlist2");
            }
        }

Hope this helps.

Thanks,

Princy