I have this code:
<asp:TextBox ID="txtFirstName" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rvFirstName" runat="server"
ErrorMessage="Enter First Name"
ForeColor="Red" ControlToValidate="txtFirstName"
SetFocusOnError="True"></asp:RequiredFieldValidator>
The problem is that the error message shows every time the page loads not only after the submit button has been clicked. I want it to show it only if the user tries click the "Next"(submit) button (how it should work).
If this is relevant: The code above is placed in a UserControl which is included in another UserControl(the "Next" button is here) which is then included in a View of a MultiView.
Any ideas
use causeValidation to false on other buttons.
and display to dynamic.
Display="Dynamic" on require filed validator
<asp:RequiredFieldValidator ID="rvFirstName" runat="server" Display="Dynamic"
ErrorMessage="Enter First Name" ForeColor="Red"
ControlToValidate="txtFirstName" SetFocusOnError="True">
</asp:RequiredFieldValidator>
The best way is set ValidationGroup on Button and RequiredFieldValidator.
please take a look on references below, is it you have something like Page.Isvalid in your page?
References : Required Field Validator, displaying on initial page load
<asp:ValidationSummary ID="ValidationSummary1" runat="server"
ShowMessageBox="True" DisplayMode="BulletList"
HeaderText="Validation issues" ShowSummary="False" ValidationGroup="Validation"/>
<asp:TextBox ID="txtFirstName" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rvFirstName" runat="server" ErrorMessage="Enter First Name" ForeColor="Red" ControlToValidate="txtFirstName" SetFocusOnError="True" ValidationGroup="Validation"></asp:RequiredFieldValidator>
Add the above code and modify your Required Field Validator
Set 'ValidationGroup' for RequiredFieldValidator and the Next button
Remove the SetFocusOnError="True" and add display="Dynamic" instead of SetFocusOnError="True" in your requiredfieldvalidation and set casevalidtion="false" in your page.
01.If you want to display message in page load. protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
Page.Validate();
}
}
Display="Dynamic"
Related
In am using htm required="required" validation but it is not working properly as needed.
I have 2 button on single page and I want that on 1 button click it validate for textbox1 and on click of 2nd button it will validate for textbox2.
Please review attached image for more detail
You are looking for ValidationGroup. By giving a collection of Validators and a Button the same id, the corresponding button will only validate those fields.
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="TextBox1" ValidationGroup="group1"></asp:RequiredFieldValidator>
<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="TextBox2" ValidationGroup="group1"></asp:RequiredFieldValidator>
<asp:Button ID="Button1" runat="server" Text="Button Group 1" ValidationGroup="group1" />
<asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator3" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="TextBox3" ValidationGroup="group2"></asp:RequiredFieldValidator>
<asp:Button ID="Button2" runat="server" Text="Button Group 2" ValidationGroup="group2" />
I don't think HTML does that natively (grouped validation).
If server-side is not an option, then you'll need to use some JavaScript.
I have found some inspiration in this answer for a related question (Triggering HTML5 Form Validation) : https://stackoverflow.com/a/39689115/370786
If you group each set of inputs that you want to validate together in a form (so you will have several forms), then you can trigger validation through Javascript. Then you can stop the form from posting. This can be done through Javascript - maybe it can be done in HTML but I'm not sure.
Then once everything has validated you will need to post the data to the server, using some Javascript. It might be as simple as just triggering the submit() method on a form element.
So with the suggestions i updated my code.
Textbox:
<asp:TextBox ID="txtStudent_Id" runat="server"></asp:TextBox></td>
<asp:RequiredFieldValidator runat="server"
ControlToValidate="txtStudent_Id"
ErrorMessage="Id is required"
ID="validator_ID"
ValidationGroup="Validation_ID">
</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator id="RegularExpressionValidator1"
ControlToValidate="txtStudent_Id"
ValidationExpression="\d+"
Display="Static"
EnableClientScript="true"
ErrorMessage="Please enter numbers only" ValidationGroup="Validation_ID"
runat="server"/>
Button:
<asp:Button runat="server" Text="Submit" ID="btnSubmitStudent" ValidationGroup="Validation_ID" CausesValidation="true" OnClick="btnSubmitStudent_Click" />
Code Behind:
addstudent.Student_Id =Convert.ToInt32(txtStudent_Id.Text);
Now that i have also entered the regular expression validator it should work but i still get the same error.
Don't need a solution for your error.need a solution why the validation control not works? and how can solve this problem?then what i do?
Main thing
You have missed ValidationGroup="XXXXX" in validation control and button control, So it's allowed to server side code, so first add that and
try with this asp:RegularExpressionValidator for only allow integer value, So It's not allow if you type any special and string characters
<asp:TextBox ID="txtStudent_Id" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator runat="server"
ControlToValidate="txtStudent_Id" ValidationGroup="XXXXX" EnableClientScript="True"
ErrorMessage="Id is required">
</asp:RequiredFieldValidator>
<asp:RegularExpressionValidator id="RegularExpressionValidator1"
ControlToValidate="txtStudent_Id"
ValidationExpression="\d+"
Display="Static"
EnableClientScript="true"
ErrorMessage="Please enter numbers only" ValidationGroup="XXXXX"
runat="server"/>
<asp:button ValidationGroup="XXXXX"></asp:button>
or
<asp:button ValidationGroup="XXXXX" CasusesValidation="true"></asp:button>
If you try my answer,then don't worry about Input string was not in a correct format. error.
Update:
please try this in your button click event.
Page.Validate();
if (Page.IsValid == false)
{
return;
}
//Call your code here
TextBox
<asp:TextBox ID="txtStudent_Id"
runat="server"
ValidationGroup="VAlidation_Name">
</asp:TextBox>
RequiredFieldValidator
you have not added id to the RequiredFieldValidator and also ValidationGroup
<asp:RequiredFieldValidator runat="server"
Display="Dynamic"
ControlToValidate="txtStudent_Id"
ID="rfvStudent_Id"
ForeColor="Red"
ValidationGroup="VAlidation_Name"
ErrorMessage="Id is required">
</asp:RequiredFieldValidator>
Button Submit
<asp:Button ID="btnSubmit" Text="Submit"
runat="server"
ValidationGroup="VAlidation_Name" CausesValidation="true" />
In default CausesValidation="true" but check that too.
Code Part
addstudent.Student_Id =int.TryParse(txtStudent_Id.Text);
Suggestion:
And you can use AjaxToolKit Extender MaskedEdit to make the user enter only integer.
<asp:MaskedEditExtender ID="txtEndDate_MaskedEditExtender" runat="server" ClearTextOnInvalid="True"
ClearMaskOnLostFocus="true" Enabled="True" Mask="9999999"
MaskType="Date" TargetControlID="txtStudent_Id"
ErrorTooltipEnabled="True">
Updated:
void SubmitButton_Click(object sender, EventArgs e)
{
if (!Page.IsValid)
return;
// Do form stuff
}
Check this too EnableClientScript="True" and Enabled="True"
<asp:RequiredFieldValidator runat="server"
Display="Dynamic"
ControlToValidate="txtStudent_Id"
ID="rfvStudent_Id"
EnableClientScript="True"
Enabled="True"
ForeColor="Red"
ValidationGroup="VAlidation_Name"
ErrorMessage="Id is required">
</asp:RequiredFieldValidator>
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?
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
}
use the ValidationGroup="group" property to button and assign validation group to text on which you want to validate.
Hope it will help
You can specify CausesValidation="false" for the secondary button, this is less verbose and potentially confusing when validation groups are A) excessive for a single field and B) you have to maintain validation groups when adding further controls (do we put it on the button, the validator, the field and the validation summary? It's not a lot the remember the standard, but less practical when editing.
This is Aspx :
<td align="right">
Cut Type :
</td>
<td class="required">
<telerik:RadComboBox ID="cmbCutType" runat="server" MaxHeight="200px" Width="200px"
Filter="Contains" EnableLoadOnDemand="true" EmptyMessage="Select Cut Type" OnSelectedIndexChanged="cmbCutType_SelectedIndexChanged"
AutoPostBack="true">
</telerik:RadComboBox>
<asp:RequiredFieldValidator runat="server" ID="rfvCutType" Display="None" ControlToValidate="cmbCutType" InitialValue=""
ValidationGroup="Save" ErrorMessage="Cut Type is Mandatory"
ForeColor="Red"></asp:RequiredFieldValidator>
<ajaxToolkit:ValidatorCalloutExtender ID="vceCutType" TargetControlID="rfvCutType"
runat="server">
</ajaxToolkit:ValidatorCalloutExtender>
</td>
This is code behind :
protected void btn2_Click(object sender, EventArgs e)
{
rfvCutType.IsValid = false;
}
try this.......
If you wish you use backend validation then check this out, it worked for me.
Requiredfieldvalidator.Enabled = False
Requiredfieldvalidator is an ID.
The project I am working has all the fields visible but based on certain conditions, validation has to be disabled.
I feel embarrassed to be posting this as I'm pretty sure I'm missing something really simple, and this certainly isn't the first time I've used asp validators. I have the following validator controls:
<asp:RequiredFieldValidator runat="server" ControlToValidate="txtTitle" EnableClientScript="false" ErrorMessage="*" ValidationGroup="groupUpdateAL" />
<asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="txtAbbr" EnableClientScript="false" ErrorMessage="*" ValidationGroup="groupUpdateAL" />
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="ddlColour" EnableClientScript="false" ValidationGroup="groupUpdateAL" ErrorMessage="*" />
<asp:Button ID="btnSave" runat="server" Text="Save" ValidationGroup="groupUpdateAL" CausesValidation="true" /><br />
For some reason, if leaving the controls empty I am given the following error:
Length cannot be less than zero.
Parameter name: length
It seems the validation controls aren't catching an invalid input.
What I've Tried:
I suspected it may have been client validation intercepting the postback, which is why you can see EnableClientScript is set to false now. Didn't work.
Try testing page validity in the onclick event of your btnSave :
if(Page.IsValid)
{
//Do your stuff
}
else
{
Response.Write("error");
}
Validation is on new screen
in c# file avalilabel on this image plzz click
on this image
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Create database to get querystring
Create connection file in visual studio
I have a textbox and I have set required validationcontrol on it on click of a button.
<asp:TextBox runat="server" ID="name" Width="120"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvname" runat="server" ControlToValidate="name" ErrorMessage="Name is required" Display="Dynamic" />
</td>
but the problem is when I am clicking on modify shared webpart and when I click on APPLY or OK button it is not saving as my form is empty . and I can't put
CausesValidation="false" on that button as this button is by default in sharepoint.
Any idea how to resolve this...?
You can use the ValidationGroup property to group all the Validators and validation fields together.
Yes using the ValidationGroup tag will help to relate the controls in a single form and will tell the submit button which fields are associated. Also make sure you have a ValidationSummary control on the page with the same ValidationGroup value. Also consider adding an InitialValue="" onto the TextBox control.
<asp:ValidationSummary ID="vs1" ShowMessageBox="true" ShowSummary="false" DisplayMode="List" runat="server" ValidationGroup="Form" HeaderText="There were problems with your submission:" />
<asp:TextBox runat="server" ID="name" Width="120"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvname" ValidationGroup="Form" runat="server" ControlToValidate="name" InitialValue="" ErrorMessage="Name is required" Display="Dynamic" />
<asp:LinkButton ID="lnkSubmit" Text="Submit" OnClick="lnkSubmit_Click" ValidationGroup="Form" runat="server"></asp:LinkButton>