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I'm having trouble validate a simple control in a form.
the form is in a content page (I'm using masterpage- just saying incase it's relevant)
when I click the button, if it's empty - the validation works, BUT - when I enter text in the textbox (meaning -the page is valid) there's no postback- the button doesn't go to the server and do what I want..

what can be the problem?

there's example of my code:

<td><asp:TextBox ID=txtEmail runat=server </asp:TextBox>
<asp:RequiredFieldValidator ID=rfvEmail runat=server
ControlToValidate=txtEmail errormessege=Please enter your email> </asp:RequiredFieldValidator></td></tr>
<tr><td><asp:Button ID=btnSave runat=server Text=Save OnClick=btnSave_Click> </asp:Button>

protected sub btnSave_Click(sender  as object, e as  EventArgs)
    If (page.isvalid) then
    End if
Updated 10-Oct-12 0:15am
danait25 10-Oct-12 7:44am
I looked about my code again and relized I have one more validator- range validator and after checking everything around the code it seems like the range validator is the one that causing the problem.
Can you tell me what's wrong?

<asp:rangevalidator id="xx" runat="server" controltovalidate=txtEmail minimumvalue=1 maximumvalue=11>

I think it might be going, just put an alert before "If(page.Isvalid)"

Or a breakpoint on the function and check value of Page.IsValid
danait25 10-Oct-12 5:03am
I've already put a breakpoint on the function but when i click the button nothing happens - I can't get there - it doesnt go to the serverside at all.. :/
Code for designer page :

<asp:TextBox ID="TextBox1" runat="server" MaxLength="11"  oncopy="return false" oncut="return false" onpaste="return false"></asp:TextBox>
       <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server"
           ControlToValidate="TextBox1" ErrorMessage="cannt be blank"
       <br />
       <asp:Button ID="Button1" runat="server" Text="Button" onclick="Button1_Click"
           style="height: 26px" ValidationGroup="myValidator" />

Mark my answer , if it fulfills your requirement.


danait25 11-Oct-12 1:30am
sorry, that didn't work as well
My problem is with the rangevalidator and not with the RequiredFieldValidator .. and I tried to add them all to the same validationgroup but nothing happened.
arshad alam 11-Oct-12 2:07am
what do you want to validate , kindly elaborate it ?
danait25 16-Oct-12 4:34am
I want to validate 2 things:
1.the textbox isn't empty more than 11 chars allowed.
If I use the "maxlength" in the textbox it limits the number of characters a user can enter, but it doesn't help in case of "copy paste" for example..
arshad alam 16-Oct-12 5:20am
check the updated solution.
Attiq-ul Islam 22-Jan-14 8:31am
Thanks for the solution.

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