compare two User Control date picker inside gridview

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I have a generic user control for calenders using ajax toolkit.
i am using the user control in a gridview twice for two date fields ("Start Date" and "End Date")
How do i compare the two dates???

I tried it using the compare validator but it doesnt get the textbox id which is inside the usercontrol.

Would appreciate some ideas..

Thanks

This is my user control

C#

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="AjaxDatePicker.ascx.cs" Inherits="TCS.AjaxDatePicker" %>
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="asp" %>
<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
    </asp:ToolkitScriptManager>
<asp:TextBox ID="txtDatePicker" runat="server"></asp:TextBox>
<asp:CalendarExtender ID="calExtndDatePicker" TargetControlID="txtDatePicker"  
    runat="server">
</asp:CalendarExtender>

Posted 13-Aug-13 6:58am

sourav kr agarwal

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Richard C Bishop 13-Aug-13 12:59pm

Try accessing the parent of the controls first and see if you can find the ID inside that.

sourav kr agarwal 13-Aug-13 13:06pm

yeah..but thats my problem..I just want that functionality in the gridview edit mode..so where do i write the code for getting the parent control...since the user control is inside the gridview

silvercr0w 13-Aug-13 13:31pm

What is the code you used with the compare validator? Maybe it isn't finding the textbox id because it is being auto-generated in the gridview. Try adding clientidmode="static" in your control.

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sourav kr agarwal · Answer 1 · 2013-08-13T07:56:00

this is compare validator inside gridview

C#

<asp:comparevalidator id="CompareValidator1" runat="server" errormessage="CompareValidator" xmlns:asp="#unknown"></asp:comparevalidator>
            <asp:ajaxdatepicker id="UControl2" title="Date Picker" runat="server" xmlns:asp="#unknown"></asp:ajaxdatepicker>

and this is my code behind for setting the control to validate property

C#

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
       {
           if (e.Row.RowType == DataControlRowType.DataRow)
           {
               AjaxDatePicker ajx = (AjaxDatePicker)e.Row.FindControl("UControl1");
               TextBox txtDatepicker = (TextBox)ajx.FindControl("txtDatePicker");
              // string id = txtDatepicker.UniqueID;
               AjaxDatePicker ajx1 = (AjaxDatePicker)e.Row.FindControl("UControl2");
               TextBox txtDatepicker1 = (TextBox)ajx.FindControl("txtDatePicker");
               //string id = txtDatepicker1.UniqueID;

               CompareValidator cmp = (CompareValidator)e.Row.FindControl("CompareValidator1");
               cmp.ControlToValidate = txtDatepicker1.UniqueID;
             //  string id=
           }
       }

I am getting the following error on running the page

Unable to find control id 'ctl00$ContentPlaceHolder1$GridView1$ctl02$UControl1$txtDatePicker' referenced by the 'ControlToValidate' property of 'CompareValidator1'.