I have a text box with required field validator:-
<asp:TextBox ID="txtCName" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvCName" runat="server" ErrorMessage="Pleas Enter Name" ControlToValidate="txtCName" ></asp:RequiredFieldValidator>
I need to show error message on button click:-
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click"
ValidationGroup="sub">
I am using the following code to assign validation group to the required field validator (it is in document.ready() function) :-
$("#<%=rfvCName.ClientID %>").attr('ValidationGroup', 'sub');
But it is not showing any error message on button click. Please help me.
I need to do it using Jquery. I don't want to assign ValidatioGroup directly to the control.
Add validation group ValidationGroup="Sub"
<asp:RequiredFieldValidator ID="rfvCName" runat="server" ErrorMessage="Pleas Enter Name" ValidationGroup="sub" ControlToValidate="txtCName" ></asp:RequiredFieldValidator>
when the page(server side) prerender the object requiredFieldValidator, some javascript is added into page automatically by .net framework.
this javascrript code check the validationgroup.
add manually the validationgroup attribute client-side without this javascript code not work.
you can see this code in developpers tool searching "ValidationGroup"
if you cannot add attribute in html, you can add this attribute in a event server side like load or prerender.
Related
There are two submit buttons on web form, Required field validation is there, i want if i click first submit button, it doesn't check the second submit.
Mean i only want that only first text box Required validation must work?
what should i have to do that i can segregate validation on multiple submit buttons
For more detail, snap shot is included.
What you need is validationGroup property
The required Filed Validator will have following property
<asp:requiredfieldvalidator id="RequiredFieldValidator2"
...
validationgroup="Group1"
...
runat="Server">
</asp:requiredfieldvalidator>
And associated button
<asp:button id="Button1"
text="Validate"
causesvalidation="true"
validationgroup="Group1"
runat="Server" />
In this way you can organise which validation to perform on any specific button click
<asp:TextBox ID="txtAppSanctionLimit" runat="server" onblur="calcCustDebtEquity()"> </TextBox>
<asp:HiddenField ID="hfAppReqeustAmt" runat="server" Value="0" />
<asp:CompareValidator ID="CompareValidator1" runat="server" ErrorMessage="Proposed Limit is never greater than Request Limit" ControlToCompare="txtAppSanctionLimit" ControlToValidate="txtRequestLimits" Operator="GreaterThan"
ValidationGroup="Report3" Display="none" ></asp:CompareValidator>
<asp:Button ID="btnLimtUpdate" runat="server" Text="Update" ValidationGroup="Report3"
onclick="btnLimtUpdate_Click"/>
<asp:ValidationSummary ID="ValidationSummary3" runat="server" ShowMessageBox="true" ShowSummary="false" ValidationGroup="Report3" />
Above all has been used in my defalt.aspx page under Visual Studio 2010.
I want to show Validation Message if txtAppSanctionLimit value is greater than hfAppReqeustAmt value. note that hfAppReqeustAmt value get from database with query.
how can I solve this problem.
The accepted answer is completely incorrect!
Simply put you can't use a CompareValidator with a HiddenField. You need to use a CustomValidator.
See: asp:RequiredFieldValidator does not validate hidden fields
The attribute for the target
ControlToCompare="txtAppSanctionLimit"
should probably be pointed at your hidden field.
ControlToCompare="hfAppReqeustAmt"
and the attribute for the ControlToValidate should be pointed to your user data entry field.
ControlToValidate="txtAppSanctionLimit"
as it is currently pointing to a control that is not shown in the example code.
EDIT: Per MSDN for the CompareValidator.ControlToCompare -
If the control to compare is hidden or is inside a container (such as
a Panel control) that is not visible, the validator performs
server-side validation only. The validator client script supports only
visible controls.
I am making a website and I have made a form fields like email field and validation expressions associated with it. Validation is initiated on text change. But i want it t execute on "submit" button click event.
I have searched but could not locate the solution to my problem. Please tel me why is this happening and how can i make it right. I am new to this web development field, So need help from you guys.
Thanks in advance!!!
Hamad
You could disable showing errors in the validator itself and instead make a validation summary which will be shown only after you click submit.
Like this:
<asp:RequiredFieldValidator runat="server" ControlToValidate="txtEmail" ValidationGroup="vRegister" Display="None" ErrorMessage="Email field cannot be empty"></asp:RequiredFieldValidator>
and then declare a validation summary:
<asp:ValidationSummary runat="server" ID="vSummary" ValidationGroup="vRegister" DisplayMode="BulletList" />
What you should do is change the value of EnableClientScript to false. Then call the validation from your code behind (which should always be done since a user can disable their client side validation anyway. Security rule 1, never trust the client)
EnableClientScript: Gets or sets a value indicating whether client-side validation is enabled.
<asp:TextBox ID="txtName" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvName" runat="server" EnableClientScript="false"
ErrorMessage="*" ControlToValidate="txtName" ></asp:RequiredFieldValidator>
Code Behind:
protected void btnSave_Click(object sender, EventArgs e)
{
if (Page.IsValid)
{
//Do stuff
}
//No need for else, the validations should display accordingly
}
Additional resources: http://weblogs.asp.net/rajbk/archive/2007/03/15/page-isvalid-and-validate.aspx
Are you simply looking for the validation type controls to validate input?
If so look at the property EnableValidation and set it to true. Doing so will force the validation of the textbox even before the button_Click event can execute.
Try this:
<asp:TextBox ID="txtName" runat="server" Height="23px"
Width="252px"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvName" runat="server"
ErrorMessage="*" ControlToValidate="txtName"
ValidationGroup="vadd"></asp:RequiredFieldValidator>
The "Causes Validation" property on the button itself will automatically force your page to meet you validation specifications before firing the rest of the code associated with the button press.
If i have understood your question, you need to create a same validation group for each of the validation control in your aspx page. You also need to have a validation summary with same validation group. And atlast in the submit button in aspx page you have to mention same validation group...
I'm having an issue with an image button that I have built. When I attach required field validators to the page, they stop the button onclick event from firing. I am pretty perplexed by this as I can't see any issues in my code!
Please could you cast your eyes over this and help me out?
Cheers
<asp:TextBox ID="TB_Newsletter" runat="server" CssClass="nwsltr-input"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" ValidationGroup="V1" runat="server" Display="Dynamic" ControlToValidate="TB_Newsletter" ErrorMessage="You must enter your email address"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="RegularExpressionValidator1"
runat="server" ValidationGroup="V1" Display="Dynamic"
ValidationExpression="^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*#([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,9})$"
ErrorMessage="Invalid Email Address" ControlToValidate="TB_Newsletter"></asp:RegularExpressionValidator>
<asp:ImageButton ID="IB_SubScri"
ImageUrl="~/_includes/images/buttons/nwsltr-btn.png" runat="server"
onclick="IB_SubScri_Click" CausesValidation="True" ValidationGroup="V1"/>
When you press the button it submits the form, but prior to that the field validators are firing by script - the form won't post if validation fails. <asp:Imagebutton /> and <asp:Button /> types allow you to disable validation when they are pressed:
<asp:ImageButton ... CausesValidation="False"/>
From MSDN on the CausesValidation property:
true if the control causes validation
to be performed on any controls
requiring validation when it receives
focus; otherwise, false. The default
is true.
See this MSDN reference for more information.
Obviously, we assume here that the validator firing when pressing this button is not required.
Change "CausesValidation" to False on your ImageButton
In my project, validation is not occurring at button_click and imagebutton_click. Why could it be so?
I also gave same validation group to all validators and button and also CAUSEVALIDATION "true" in button
Please help solve this.
Add validation group to image button too and check. Also check if your image button has image in it. Other wise it will not fire events
**
<asp:TextBox ID="txt_password" runat="server" CssClass="text_box_password" TextMode="Password" Width="180px"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="txt_password" ErrorMessage="*" ValidationGroup="aaaa">**</asp:RequiredFieldValidator>
**