Changing the properties of a control within an emptydatatemplate

[ranger979]

I am using the emptydatatempla te for a gridview control. I have a detailsview control within the emptydatatempla te. In the detailsview I have a templatefield that contains an imagebutton control and a textbox control.

            <EmptyDataTemplate>
                &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; &nbsp;
                <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                <asp:DetailsView ID="DetailsView1" runat="server" AutoGenerateRows="False" DataKeyNames="ActivityTypeControl_ID"
                    DataSourceID="spListActivityTypeControlByType" DefaultMode="Insert" Height="50px"
                    Width="125px" BackColor="#090AAAA" OnPageIndexChanging="DetailsView1_PageIndexChanging1" BorderStyle="None" GridLines="None" OnItemCommand="DetailsView1_ItemCommand">
                    <Fields>
                       <asp:TemplateField HeaderText="Begin Date" SortExpression="BeginDate">
                            <InsertItemTemplate>
                                &nbsp;<asp:TextBox ID="txtIBeginDate" runat="server" Text='<%# Bind("BeginDate") %>' Width="90px"></asp:TextBox>
                                <asp:ImageButton ID="imgbutICalendar1" runat="server" ImageUrl="~/Images/APPTL.ICO" Height="16px" 
                                Width="16px" OnClick="imgbutCalendar_Click" />
                            </InsertItemTemplate>
                        </asp:TemplateField>
                 </asp:DetailsView>
            </EmptyDataTemplate>

When the user clicks on the imagebutton I look at the text in the textbox and display a calendar control.

    Private ParentControl As Control
    Protected Sub imgbutCalendar_Click(ByVal sender As System.Object, ByVal e As System.Web.UI.ImageClickEventArgs)
     Dim txtDate as TextBox

     ParentControl = DirectCast(sender, Control).Parent
     txtDate = ParentControl.FindControl("txtIBeginDate")

     Calendar.VisibleDate = CDate(txtDate.Text)
     Calendar.Visible = True  
    End Sub

This displays the calendar with the month I would expect. However, I then want to change the text property of my textbox (txtIBeginDate) with the date that was selected from the calendar control.

I am doing this using the calendar's selectionchange d event using the following code.

    Protected Sub Calendar_SelectionChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Calendar.SelectionChanged
        Calendar.Visible = False
        Dim txtDate As TextBox

        txtDate = ParentControl.FindControl(Session("txtIBeginDate"))
        txtDate.Text = Calendar.SelectedDate.ToShortDateString
    End Sub

If I step through my code in debug everything seems to get set correctly. However, when my page is redisplayed the value in my textbox is left unchanged.

Can anyone explain what I am doing wrong?

[iam_clint]

Dim txtDate As TextBox 
txtDate = ParentControl.FindControl(Session("txtIBeginDate")) 
txtDate.Text = Calendar.SelectedDate.ToShortDateString

I see here you are dimming txtDate as TextBox... in your aspx code do you have something like this

<asp:textbox runat="server" id="txtDate"></asp:textbox>

If so there is no need to dim txtDate as TextBox. i'm not 100% sure this is the problem you are experiencing.. Also another look into things... in your page load are you setting txtDate.text to anything? maybe you need an ispostback check.