Question

I have a checkbox that is set to “false” as default in the aspx. Then there is a function that determines whether it is true or false, the problem is that when on the page there is a textbox and this textbox has a TextChange Event on it, when i type something in the textbox and then go to the checkbox which at this time is visible the first time i click the whole page postbacks and resets the checkbox to unchecked.. then i need to click it again and then it sticks.. what can I do to make it stick at the first click?

Can I use some javascript for this or what do you think my options are?

 protected void myTextbox_TextChanged(object sender, EventArgs e)
    {
        ShowCheckBox(true);
    }

  private void ShowCheckBox(bool ckVal)
   {
      myCheckBox.Visible = ckVal;
   }

Answer 1

why not add the textbox inside an update panel something like this:

<asp:UpdatePanel runat="server" ID="test">
    <ContentTemplate>
        <asp:TextBox ID="TEXTBOX" runat="server" Visible="true" AutoPostBack="true"
            OnTextChanged="checkUser" >Page Name</asp:TextBox>
    </ContentTemplate>
    <Triggers>
        <asp:AsyncPostBackTrigger ControlID="TEXTBOX" EventName="TextChanged" />
    </Triggers>
</asp:UpdatePanel>