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Using FindControl in a FormView InsertItemTemplate

Posted on 2007-03-25
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Last Modified: 2012-06-27
Hi Experts,

I would like to pass a date selected from a calendar in a FormView InsertItemTemplate into SQL via a parameter.

In my FormView I have:
<InsertItemTemplate>
  <asp:Calendar ID="Calendar1" runat="server" />
</InsertItemTemplate>

And the DataSource I have:
  <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
           ...
            InsertCommand="INSERT INTO [tblGT] ([GT]) VALUES (@GTDate)">
                 <InsertParameters>
                  <asp:ControlParameter ControlID="Calendar1" Name="GTDate" PropertyName="SelectedDate" Type="DateTime" />
            </InsertParameters>
        </asp:SqlDataSource>

To which I receive the following error: Could not find control 'Calendar1' in ControlParameter 'GTDate'
How do use FindControl() in this scenario to pass the date as the parameter.

I'm a newbie, so any ideas re the best way to approach this?

Thanks-in-advance
Regards
Rob
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Comment
Question by:rwarcup
  • 2
4 Comments
 
LVL 15

Accepted Solution

by:
igor_alpha earned 2000 total points
ID: 18789810
Hello rwarcup,

Calendar1 control isn't visible for SqlDataSource because it nested in formview template. Sou you can't reference to it properties in SqlDataSource parameters.
You can solve the problem by using binding mechanism. The "GTDate" declared in Calendar1 will bind to specified parameter in SqlDataSource.

In my FormView you need to change declaratrion:
<InsertItemTemplate>
  <asp:Calendar ID="Calendar1" runat="server" SelectedDate='<%#  Bind("GTDate") %>'/>
</InsertItemTemplate>

And in SqlDataSource too:

  <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:ConnectionString %>"
           ...
            InsertCommand="INSERT INTO [tblGT] ([GT]) VALUES (@GTDate)">
                 <InsertParameters>
                  <asp:Parameter Name="GTDate" Type="DateTime" />
            </InsertParameters>
        </asp:SqlDataSource>
0
 
LVL 9

Expert Comment

by:noulouk
ID: 18789813
Hi rwarcup,
Try this:
protected void FormView1_ItemInserting(object sender, FormViewInsertEventArgs e)
    {
        Calendar Calendar1 = (Calendar)FormView1.Row.FindControl("Calendar1");
        // Validate your control

       e.Values["GTDate"] = Calendar1.SelectedDate;
    }
Regards.
0
 

Author Comment

by:rwarcup
ID: 18791251
Thanks igor_alpha & noulouk ... both these solutions work.
Regards Rob
0
 
LVL 9

Expert Comment

by:noulouk
ID: 18791738
You can split points if you want to grade me a little.
;-)
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