Is there any way to limit the validation of a validator control to a particular event or trigger? Say, I want my validator1 to be activated only when button1 was clicked, and validator2 to be activated only when button2 was clicked. How can I do this in asp.net?
ValidationGroups are what you're looking for(ASP.NET >= 2.0)
Validation groups allow you to organize validation controls on a page
as a set. Each validation group can perform validation independently
from other validation groups on the page.
<asp:textbox id="AgeTextBox"
runat="Server">
</asp:textbox>
<asp:requiredfieldvalidator id="RequiredFieldValidator1"
controltovalidate="AgeTextBox"
validationgroup="PersonalInfoGroup"
errormessage="Enter your age."
runat="Server">
</asp:requiredfieldvalidator>
<br /><br />
<!--When Button1 is clicked, only validation
controls that are a part of PersonalInfoGroup
are validated.-->
<asp:button id="Button1"
text="Validate"
causesvalidation="true"
validationgroup="PersonalInfoGroup"
runat="Server" />
<br /><br />
<asp:textbox id="CityTextBox"
runat="Server">
</asp:textbox>
<asp:requiredfieldvalidator id="RequiredFieldValidator2"
controltovalidate="CityTextBox"
validationgroup="LocationInfoGroup"
errormessage="Enter a city name."
runat="Server">
</asp:requiredfieldvalidator>
<br /><br />
<!--When Button2 is clicked, only validation
controls that are a part of LocationInfoGroup
are validated.-->
<asp:button id="Button2"
text="Validate"
causesvalidation="true"
validationgroup="LocationInfoGroup"
runat="Server" />
Related
I have a validator with a bound text field (it's set via ControlToValidate). How can I make the validator's error message appear nearby another control (a label above this text field)?
Just put the validator control nearby the control where you want to show the message i.e. wherever you want to show the message just put the validator control there.
In the following example I am showing validation message near some other control not near the text box.
<form id="form1" runat="server">
<asp:Label ID="lblNameRequired" runat="server" Text="*Name :"></asp:Label>
<asp:TextBox ID="txtNameRequired" runat="server" ValidationGroup="Validation"></asp:TextBox>
<br />
<asp:Label ID="lblGenderRequired" runat="server" Text="*Gender :"></asp:Label>
<asp:DropDownList ID="ddlGenderRequired" runat="server" ValidationGroup="Validation">
<asp:ListItem Selected="True" Value="-1">--Select--</asp:ListItem>
<asp:ListItem Value="0">Male</asp:ListItem>
<asp:ListItem Value="1">Female</asp:ListItem>
</asp:DropDownList>
<asp:CompareValidator ID="CompareValidatorGender" runat="server" ControlToValidate="ddlGenderRequired"
Display="Dynamic" ErrorMessage="Gender is Required" Operator="NotEqual" ValidationGroup="Validation"
ValueToCompare="-1"></asp:CompareValidator>
<br />
<asp:Label ID="lblValidation" runat="server" Text="Fields marked with * are required"></asp:Label>
<asp:RequiredFieldValidator ID="RequiredFieldValidatorName" runat="server" ControlToValidate="txtNameRequired"
Display="Dynamic" ErrorMessage="Name is Required" ValidationGroup="Validation"></asp:RequiredFieldValidator>
<br />
<asp:Button ID="btnValidate" runat="server" Text="Validate Input" ValidationGroup="Validation" />
<br />
</form>
Hope this helps you.
I have a form in which I have two textboxes and one fileupload control, I am using required field validator on one textbox and on Fileupload control, When I am clicking the submit button, its disabling the fileupload control and not showing any validation for it.
I also have second button for Cancel, clicking on which redirects to previous page, when I am clicking this button its also disabling the fileuploadcontrol.
Below is my code
<asp:FileUpload ID="FileUpload1" runat="server" />
<asp:RequiredFieldValidator ID="rfvFileupload" ValidationGroup="validate" runat="server"
ControlToValidate="FileUpload1"></asp:RequiredFieldValidator>
<asp:TextBox ID="txtSubj" runat="server" ></asp:TextBox><asp:RequiredFieldValidator
ID="rfvSubject" ControlToValidate="txtSubj" runat="server" Display="Dynamic"
EnableClientScript="true" ErrorMessage="* required" ValidationGroup="validate" />
<asp:Button ID="btnupload" runat="server" Text="Send" ValidationGroup="validate"
OnClick="btnupload_Click">
<asp:Button ID="btncancel" runat="server" Text="Cancel" OnClick="btncancel_Click"
/>
Try using no ValidadationGroup:
<asp:FileUpload ID="fupDocument" runat="server" Width="100%" />
<asp:RequiredFieldValidator runat="server" Display="Dynamic" ErrorMessage="* Required Field" ControlToValidate="fupDocument">
</asp:RequiredFieldValidator>
I tried and work it.
I've seen a variety of questions here that are very close to this issue but none which seem to fit this specific scenario.
Description:
I have ID and Password fields with a Log On button in the Master page. These are in the "LoginValidationGroup" and they work fine.
Now, in the Default.aspx, I have an email TextBox and submit button that are in the "NotifyMeValidation" group, and they also work, BUT not if you hit the enter key rather than the submit button. The Submit button works fine - Enter key ... not so much.
The Enter key causes the validation to occur on the LoginValidationGroup, even though the TextBox is set to CausesValidation="true", and it is in the NotifyMeValidation group.
I guarantee people are going to enter an email in that box and hit Enter. I would!!! And when they do, they're going to see a callout balloon at the top telling them the User ID is required.
What's my error here? If I need to post the actual code I can do so.
Actually, let me just go ahead and do that.
From the Default.aspx:
<asp:RequiredFieldValidator
runat="server"
ValidationGroup="NotifyMeValidation"
ID="EmailRequiredValidator"
ControlToValidate="SenderEmailTextBox"
ErrorMessage="Email is Required"
Display="None" />
<ajaxToolkit:ValidatorCalloutExtender
runat="Server"
PopupPosition="Left"
ID="EmailRequiredValidatorExtender"
Width="185px"
TargetControlID="EmailRequiredValidator"
WarningIconImageUrl="/Images/warning.gif" />
<asp:Label ID="SenderEmailLabel" runat="server" ssociatedControlID="SenderEmailTextBox" EnableViewState="false" Text="Email:"></asp:Label>
<asp:TextBox ID="SenderEmailTextBox" runat="server" ValidationGroup="NotifyMeValidation" Width="350" BackColor="#cccccc" CausesValidation="true"></asp:TextBox>
<br /><br />
<asp:Button ID="SubmitButton" runat="server" ValidationGroup="NotifyMeValidation" EnableViewState="false" CssClass="submit" Text="Send" CausesValidation="true" OnClick="btnSubmit_Click" />
From the Master page:
<asp:Label CssClass="LoginHeading" ID="UserNameLabel" runat="server" AssociatedControlID="UserNameTextbox">UserName: </asp:Label>
<asp:TextBox CssClass="LoginTextBox" ID="UserNameTextbox" runat="server" ValidationGroup="LoginValidation" CausesValidation="True"></asp:TextBox>
<asp:Label CssClass="LoginHeading" ID="PasswordLabel" runat="server" AssociatedControlID="PasswordTextbox">Password: </asp:Label>
<asp:TextBox CssClass="LoginTextBox" ID="PasswordTextBox" runat="server" TextMode="Password" ValidationGroup="LoginValidation" CausesValidation="True"></asp:TextBox>
<asp:Button CssClass="LoginHeading" ID="LoginButton" runat="server" Text="Button" CommandName="Login" ValidationGroup="LoginValidation" CausesValidation="True" onclick="LoginButton_Click" />
And the Master page validators...
<asp:RequiredFieldValidator runat="server" ID="UIDRequired"
ValidationGroup="LoginValidation"
ControlToValidate="UserNameTextbox"
Display="None"
ErrorMessage="<b>Required Field Missing</b><br />A User ID is required." />
<ajaxToolkit:ValidatorCalloutExtender
runat="Server"
ID="UIDValidationExtender"
PopupPosition="Left"
Width="185px"
TargetControlID="UIDRequired"
WarningIconImageUrl="/Images/warning.gif" />
<asp:RequiredFieldValidator runat="server" ID="PWRequired"
ValidationGroup="LoginValidation"
ControlToValidate="PasswordTextbox"
Display="None"
ErrorMessage="<b>Required Field Missing</b><br />A password is required." />
<ajaxToolkit:ValidatorCalloutExtender
runat="Server"
ID="PWValidationExtender"
PopupPosition="Left"
TargetControlID="PWRequired"
Width="185px"
WarningIconImageUrl="/Images/warning.gif" />
<asp:CustomValidator
runat="server"
Display="None"
ValidationGroup="LoginValidation"
ID="CustomUserExistsValidator"
ControlToValidate="UserNameTextbox"
ErrorMessage="<b>Invalid UserID!</b><br />User ID doesn't exist. Please try again.<br />"
OnServerValidate="CustomCheckUserExists"/>
<ajaxToolkit:ValidatorCalloutExtender
runat="server"
PopupPosition="Left"
ID="UserIDCalloutExtender"
TargetControlID="CustomUserExistsValidator"
Width="185px"
WarningIconImageUrl="/Images/warning.gif" />
<asp:CustomValidator
runat="server"
ID="CustomPWValidator"
Display="None"
ValidationGroup="LoginValidation"
ControlToValidate="PasswordTextbox"
ErrorMessage="<b>Invalid Password!</b><br />Please try again.<br />"
OnServerValidate="CustomValidatePassword"/>
<ajaxToolkit:ValidatorCalloutExtender
runat="server"
PopupPosition="Left"
ID="PWCalloutExtender"
TargetControlID="CustomPWValidator"
Width="185px"
WarningIconImageUrl="/Images/warning.gif" />
<asp:CustomValidator
runat="server"
ID="CustomUserApprovedValidator"
Display="None"
ValidationGroup="LoginValidation"
ControlToValidate="UserNameTextbox"
ErrorMessage="<b>Approval Error!</b><br />This UserID exists, but is not yet approved.<br />"
OnServerValidate="CustomCheckUserApproved"/>
<ajaxToolkit:ValidatorCalloutExtender
runat="server"
PopupPosition="Left"
ID="UserApprovedCalloutExtender"
TargetControlID="CustomUserApprovedValidator"
Width="185px"
WarningIconImageUrl="/Images/warning.gif" />
Try adding an <asp:Panel> around each set of controls and setting the DefaultButton property to the ID of the button you want to click when the users hits Enter.
Just to explain what is happening here, the aspx's default button is being fired when you press enter on the textbox. To handle this you could you could fire some jQuery code when the enter key is clicked on the textbox, this code will then perform the click on the specific button that you require. Check this
Here's my markup:
Name:
<asp:TextBox ID="txtNewName" runat="server" ValidationGroup="NewDepartmentValidationGroup" />
<asp:RequiredFieldValidator ID="vldtxtNewName" runat="server" ControlToValidate="txtNewName"
ErrorMessage="Required Field" /><br />
Description:
<asp:TextBox ID="txtNewDescription" runat="server"
ValidationGroup="NewDepartmentValidationGroup"/>
<asp:RequiredFieldValidator ID="vldtxtNewDescription" runat="server"
ControlToValidate="txtNewDescription" ErrorMessage="Required Field" /><br />
<asp:Button ID="cmdCreate" runat="server" Text="Create"
ValidationGroup="NewDepartmentValidationGroup" OnClick="cmdCreate_Click" />
When I remove ValidationGroup attribute, the behavior is as expected and the client side code warns that the field is required.
But when I specify ValidationGroup (as noted in the example above) and I click the button with the text boxes empty, the client side code does nothing, the button click event fires and the Page.IsValid equals true and my code proceeds, contrary to what is expected.
Any ideas how to fix this?
You are missing Validation Group on the Validators.
There's no need to specify validation group on the controls(textboxes) instead specify the validation group on the validators and the button on which you want the valid data to be posted!
Try this one:
Name:
<asp:TextBox ID="txtNewName" runat="server" />
<asp:RequiredFieldValidator ID="vldtxtNewName" runat="server"
ControlToValidate="txtNewName" ValidationGroup="NewDepartmentValidationGroup"
ErrorMessage="Required Field" /><br />
Description:
<asp:TextBox ID="txtNewDescription" runat="server" />
<asp:RequiredFieldValidator ID="vldtxtNewDescription" runat="server"
ControlToValidate="txtNewDescription" ErrorMessage="Required Field"
ValidationGroup="NewDepartmentValidationGroup" /><br />
<asp:Button ID="cmdCreate" runat="server" Text="Create"
ValidationGroup="NewDepartmentValidationGroup" OnClick="cmdCreate_Click" />
try with ValidationGroup="NewDepartmentValidationGroup" in the validators not in textbox
<asp:TextBox ID="txtNewName" runat="server" />
<asp:RequiredFieldValidator ID="vldtxtNewName" runat="server" ControlToValidate="txtNewName" ValidationGroup="NewDepartmentValidationGroup"
ErrorMessage="Required Field" /><br />
Description:
<asp:TextBox ID="txtNewDescription" runat="server"
/>
<asp:RequiredFieldValidator ID="vldtxtNewDescription" runat="server"
ControlToValidate="txtNewDescription" ErrorMessage="Required Field" ValidationGroup="NewDepartmentValidationGroup"/><br />
<asp:Button ID="cmdCreate" runat="server" Text="Create"
ValidationGroup="NewDepartmentValidationGroup" OnClick="cmdCreate_Click" causesvalidation="true" />
A required field validator should fire only after clicking a submit button
<asp:RequiredFieldValidator id="req" controltovalidate="txtphone" errormessage="please enter the details">
</asp:RequiredFieldValidator>
Youre missing runatserver on your code
Check this:
<form id="form1" runat="server">
Phone Number:<br />
<asp:TextBox runat="server" id="txtphone" />
<asp:RequiredFieldValidator runat="server" id="req" controltovalidate="txtphone" errormessage="Please enter your phone number!" />
<br /><br />
<asp:Button runat="server" id="btnSubmitForm" text="Ok" />
</form>
Regards
If you are using a button field try by applying Validation Group Property in both the validator and Button as follows
<asp:RequiredFieldValidator id="req" runate="Server" controltovalidate="txtphone" errormessage="please enter the details" ValidationGroup="g">
<asp:button id="btn" runat="server" validationgroup="g">