Textbox value is not getting changed on assigning it to a value in the c# code

Question

This is the code for my Textbox (DepartureDateTB):

<asp:TextBox ID="DepartureDateTB"
             runat="server"
             CssClass="DepartureDateTB"
             ClientIDMode="Static"
             ontextchanged="DepartureDateTB_TextChanged"
             EnabledViewState="False"
             AutoPostBack="True">
</asp:TextBox>
<asp:CompareValidator ID="CompareValidator1"
                      runat="server"
                      ControlToCompare="ArrivalDateTextBox"
                      ControlToValidate="DepartureDateTB"
                      ErrorMessage="*Departure to be greater"
                      ForeColor="Red"
                      Operator="GreaterThan">
</asp:CompareValidator>

JQuery for Date Picker:

$(function () {
            $("[id$='DepartureDateTB']").datepicker({ minDate: 0, maxDate: "+30D" });
            $("[id$='DepartureDateTB']").datepicker("option", "dateFormat", "dd/mm/yy");

    });
</script>

On Page load, I am assigning a value to the textbox from database.

Then when the user changes it, there's a postback but the changed value is not retained.

Even when I tried assigning a Session variable to it and then equate it, all I get is an empty textbox.

Session["DepDateTB"] = (Request.Form[DepartureDateTB.UniqueID]).ToString();
                DepartureDateTB.Text = Session["DepDateTB"].ToString();

And when I position a break point and run it, when I hover over the Textbox the value of it is the changed date but the textbox in the front end is again empty.

You must have not included !IsPostBack in your Page_Load event. Included one and inside it add Initial data. — Suprabhat Biswal
– Suprabhat Biswal, Commented Jan 14, 2016 at 6:54
My initial data is getting added. It's only the changed data that is not appearing on postback. — Tryphena S. Augustine
– Tryphena S. Augustine, Commented Jan 14, 2016 at 6:58
Change EnabledViewState="True", if that helps ? BTW why it is false ? — Dot_NET Pro
– Dot_NET Pro, Commented Jan 14, 2016 at 7:12

Tryphena S. Augustine · Accepted Answer · 2016-01-18 04:29:22Z

1

The reason the date wasn't getting displayed was due to the following line in the jQuery code:

$("[id$='DepartureDateTB']").datepicker("option", "dateFormat", "dd/mm/yy");

Once the date format option was removed it worked fine.

I resorted to changing the date format in my c# code.

answered Jan 18, 2016 at 4:29

Tryphena S. Augustine

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