ASP Webforms Validation control not working

Question

Please help the regex Validator is not work when I click the button .

<div class="panel-body">
                <div class="form-group">
                    <div class="input-group">
                        <asp:Label runat="server" ID="lblAddBranch" Text="Branch Name" 
                           CssClass="text-primary small" AssociatedControlID="txtBranchName" />
                        <asp:RegularExpressionValidator ID="RegExp1"
                          runat="server" ErrorMessage="Branch Name must be between 3 to 12 characters" 
                          ControlToValidate="txtBranchName" ValidationExpression="^[a-zA-Z]{3,12}$" ValidationGroup="grpBranch" />
                    </div>
                    <asp:TextBox runat="server" ID="txtBranchName" CssClass="form-control input-sm" ValidationGroup="grpBranch" />
                </div>
                <asp:Button runat="server" ID="btnAddBranch" Text="Add" CssClass="form-group-btn btn btn-sm btn-primary" 
                  OnClick="btnAddBranch_Click" ValidationGroup="grpBranch" />
            </div>

When I test it looks like it is working. Can post only abc...z ABC...Z between 3 to 12 chars. Do you want it to do something else? — Jaqen H'ghar
– Jaqen H'ghar, Commented May 13, 2016 at 6:53
No errors. Even when the textbox is empty. I even changed the regex validator to a required field one, still nothing — MrFojo
– MrFojo, Commented May 13, 2016 at 7:18
if you put aa in the textbox and press the button you dont get the validation error? — Jaqen H'ghar
– Jaqen H'ghar, Commented May 13, 2016 at 7:45

CrazyDev · Accepted Answer · 2016-05-13 08:18:32Z

1

Code is working perfect. As per your expression its means that a-z and A-z and 3-12 digit will accept. So when you enter only 12 in your text box the validation will be fire.

To check required field validation you need add Requirefield validation control in you code.

answered May 13, 2016 at 8:18

CrazyDev

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