Question

I have TextBox (multiline) and Label in an UpdatePanel which I refresh with javascript __doPostBack(upEditReminder,id);

Then I set both Label and TextBox text to current DateTime.

protected void upReminder_Onload(object sender, EventArgs e)
{
    lbTest.Text = DateTime.Now.ToString();
    tbReminder.Text = DateTime.Now.ToString();

Problem is that Label is updated but TextBox date is updated only once when the page is loaded but not when __doPostBack(upEditReminder,id); is triggered.
I cant figure out what the problem is.

I have also tried textarea runat="server" but still have the same problem.

Your help is much appreciated.

Answer 1

This worked for me… is it different from what you’re doing?

aspx code snippet:

<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server" OnLoad="UpdatePanel">
    <ContentTemplate>
        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
        <asp:TextBox ID="TextBox1" runat="server" TextMode="MultiLine"></asp:TextBox>
    </ContentTemplate>
</asp:UpdatePanel>
<a href="#" onclick="__doPostBack('UpdatePanel1','');">Update</a>

codebehind snippet:

protected void UpdatePanel(object sender, EventArgs e)
{
    Label1.Text = DateTime.Now.ToString();
    TextBox1.Text = DateTime.Now.ToString();
}

Clicking the “Update” link triggers the UpdatePanel’s postback which refreshes it via ajax and both the label and textarea get the updated timestamp.