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Find Drop Down List Control in ItemTemplate

I have a GridView with a Template Field that has a dropdownlist in the column.
I need to be able to communicate with the dropdownlist. But when I run the code to find the control the results I get is ControlValue = Nothing.

pagename.aspx

  <asp:TemplateField HeaderText="Column" SortExpression="Column">
                    <ItemTemplate>
                        <asp:DropDownList ID="ddlColumn"  runat="server" AutoPostBack="true"
                    ></asp:DropDownList>
                    </ItemTemplate>
                    </asp:TemplateField>  

pagename.aspx.vb
Dim ddlTypeOf As DropDownList = CType(FindControl("ddlColumn"), DropDownList)

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rajeeshmca

Hi jeffreyjseaman,

Under which event do you want to find the control.

Instead of giving just FindControl, give it as GridView1.FindControl like

Dim ddlTypeOf As DropDownList = CType(GridView1.FindControl("ddlColumn"), DropDownList)

Change the name of the gridview according to ur requirement

Mrunal

hi
try this code in OnRowDataBound Method.

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.gridview.onrowdatabound.aspx

just put e.Row.FindControl(....

rajeeshmca

Hi jeffreyjseaman,

In the previous mail i forgot to add the row to gridview.
You will have to give the row also

like

Dim ddlTypeOf As DropDownList = CType(GridView1.Row(0).FindControl("ddlColumn"), DropDownList)

change the row position according to ur requirement.

If in a RowDataBound Event u can just give

Dim ddlTypeOf As DropDownList = CType(e.Row.FindControl("ddlColumn"), DropDownList)

If in a RowCommand event, u will have to find the rowindex from where the command was called.

bhagwantsingh

Use GridView's SelectedRow object. Which will give you selected row object and you can find ddlColumn combo in that row.

Dim ddlTypeOf As DropDownList = CType(Use GridView.SelectedRow.FindControl("ddlColumn"), DropDownList)

jeffreyjseaman

ASKER

I've used the following but it's coming up with NOTHING

Dim ddlTypeOf As DropDownList = CType(e.Row.FindControl("cboType"), DropDownList)

But if I do the following; it recognizes the control but it doesn't populate the dropdownlist.
If e.Row.RowType = DataControlRowType.DataRow Then
Dim ddlTypeOf As DropDownList = CType(e.Row.FindControl("cboType"), DropDownList)
End If

rajeeshmca

what do u want to do? do u want to populate data to the dropdown?

jeffreyjseaman

ASKER

Rajeeshmca,

That's correct. I'm executing a stored procedure by sending it parameters. When it completes it's section I want to databhind to that dropdownlist.

If this DropDownList wasn't in the grid it works perfectly. But it needs to be in a grid.

rajeeshmca

Call a function within the dropdown control using the Datasource property like

<ItemTemplate>
<asp:DropDownList ID="ddl_Region" CssClass="reqFields" runat="server" DataSource='<%# fillRegionDropDown() %>' DataTextField="Descr" DataValueField="RegionId" SelectedValue='<%# Bind("RegionId") %>' AppendDataBoundItems="True" >
</asp:DropDownList>
</ItemTemplate>

jeffreyjseaman

ASKER

Rajeeshmca,

What do you mean be call a function? where in SQL? You have a DataSource. Where is the Data Source coming from?

rajeeshmca

Hi jeffreyjseaman,

Call a user defined function in the code behind (cs Page).... this function will fetch the data from the database...

ASKER CERTIFIED SOLUTION

rajeeshmca

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