Enable/Disable Required field validator from cs page?

Question

I have two TextBox and two Buttons in my page.

One is hidden and the other one is displayed.

When I click the Button1, it will save data of the two TextBox and will validate each TextBox by the RequiredFieldValidator.

Then when I click Button2, it will just hide itself (Button2) and will show the hidden TextBox.

Both TextBox has RequiredFieldValidator validating against Button1's Event click.

Now my issue is when I simply enter text to the 1st TextBox and click save, the button click is validating the required field for hidden field. I just want to validate the 2 textbox when it is showing.

How can I avoid this?

Answer 1

Well you can simple use the Enabled="false" property of RequiredFieldValidator.

Your markup would look something like this based on your Question.

<asp:TextBox runat="server" ID="tb1"></asp:TextBox>
<asp:RequiredFieldValidator runat="server" ID="rfv1" ControlToValidate="tb1" ErrorMessage="*" ValidationGroup="gvSave">
</asp:RequiredFieldValidator>

<asp:TextBox runat="server" ID="tb2" Visible="false"></asp:TextBox>
<asp:RequiredFieldValidator runat="server" ID="rfv2" ControlToValidate="tb2" ErrorMessage="*" Enabled="false" ValidationGroup="gvSave">
</asp:RequiredFieldValidator>

<asp:Button runat="server" ID="btn1" Text="Save" onclick="btn1_Click" ValidationGroup="gvSave"/>
<asp:Button runat="server" ID="btn2" Text="Show" onclick="btn2_Click" />

And your codebehind like this:

protected void btn2_Click(object sender, EventArgs e)
{
    tb2.Visible = true;
    rfv2.Enabled = true; // Enables the second requiredfieldvalidator
}

protected void btn1_Click(object sender, EventArgs e)
{
  // your Saving code here
}

Answer 2

use the ValidationGroup="group" property to button and assign validation group to text on which you want to validate. Hope it will help