I've a radiobutton list like this;
<asp:RadioButtonList ID="RadioButtonFirm" runat="server" RepeatDirection="Horizontal">
<asp:ListItem id="option1" runat="server" Value="Firm Code" />
<asp:ListItem id="option2" runat="server" Value="Firm Name" />
</asp:RadioButtonList>
and also an asp:button control
<asp:Button ID="btnSearchFirm" runat="server" OnClientClick="Validate();" Text="search" OnClick="btnSearchFirm_Click" />
and a textbox
<asp:TextBox ID="txtCriteria" Width="120px" runat="server"></asp:TextBox>
If I select Firm Code from radio button, user only select numeric value to txtCriteria textbox, else string can be entered. How to validate it?
There are a number of ways to do this:
Only allow the user to enter numbers in the textbox. Here's a link with the example. Of course, you'll have to add a condition when they can enter characters as well. jQuery: what is the best way to restrict "number"-only input for textboxes? (allow decimal points)
Let them enter whatever they want and do a server side validation on post back.
Allow them to enter whatever they want and do a client side validation using jquery on button click.
You can hide and show a numeric and a string textbox using jquery on radio button selection and add validtors on the numeric text-box.
Whatever you choose to do, always make sure that you always have server side validation to make sure absolutely that whatever data goes in your database is valid. The other reason, the users can have their javascript disabled (not very common though) or its a basic version of the website for screen-readers and so your client side validation will be disabled.
Add a regular expression validator control to the page. Make it invisble. When you select the numeric option, then in the code behind make this regular expression validator control visible, and when you select the other option make sure to hide it again. Now when you click the button (when the numeric option is selected) then it will fire the regular expression (to check for numeric values only.
Related
I have a form with a bunch of fields that I am using RequiredFieldValidator, RegularExpressionValidator, and CustomValidator.
I want my form to perform client side checks when tabbing between fields (it currently does this), but I want to force a server side submit when the asp:button is clicked. Right now, if a form field is determined invalid on the client side, the submit button doesn't do anything. I want it to submit the page and perform the server side check.
The reason I want this to happen is because I want the page to go back to the top and display all possible issues and make it obvious to the user that there was a problem. Currently if they didn't see the client side error message, they may just click submit, see nothing happen, and end up confused.
Example field on aspx Page:
<asp:TextBox MaxLength="30" ID="LNom" runat="server" /><asp:RequiredFieldValidator ID="reqLNom" runat="server" ErrorMessage="Last Name Required" ControlToValidate="LNom" /><asp:CustomValidator ID="valLNom" runat="server" ErrorMessage="Please enter a valid last name (less than 30 characters in length)." ControlToValidate="LNom" OnServerValidate="ValidationLastName" />
<asp:Button ID="Submit" Text="Submit" runat="server" onclick="Submit_Click" />
Submit button Code Behind:
protected void Submit_Click(object sender, EventArgs e)
{
Page.Validate();
if (Page.IsValid)
{
// Do stuff
}
}
Obviously there is a bit more to this, but you get the idea.
Try asp.net ValidationSummary. See http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.validationsummary(v=vs.110).aspx
It does exactly how you want it. It can be a pop up or inline notification that tells the user what s/he needs to fix.
If you add 'CausesValidation="False"' to your asp:button declaration. This will cause the postback to happen regardless of the outcome of client side validation
You can do this client side, no need for a post back. Look into the ValidationSummary control:
http://www.w3schools.com/aspnet/control_validationsummary.asp
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
I have 3 different submit buttons(Log In, Search, Insert) in the same page and what I want is to find the best way to have this 3 buttons doing a different things when I press them, or I press enter while I am about to press them.
As you can see from my photo, when I press Log In the Insert is pressed too because I have a global form in my Master Page.
I tried to use different forms, but i can't because I need them to have runat="server", which is not possible for a page to have.
I use asp Texboxes:
<asp:TextBox class="text-input" ID="txtLoginEmail" runat="server"
Height="15px" Width="130px"></asp:TextBox>
and asp Buttons:
<asp:Button class="submit google-button" ID="btnLogin" onclick="btnLogin_Click"
runat="server" Text="Log in" />
except my Search button which is linkButton:
<asp:LinkButton ID="searchLink" runat="server" onclick="searchLink_Click">Search</asp:LinkButton>
You may use Validation Groups to cause only required text boxes validation on specific button click. And then in event handler to concrete button you may execute specific logic.
I am facing a problem in my asp.net web application that i need to display a java script confirmation box on click of Update button and this as per requirements given to me.
Currently I am using onclient click
<asp:Button ID="btnCustomerUpdate" runat="server" CssClass="applybuttonstyle"
Text="Update" onclick="btnCustomerUpdate_Click"
OnClientClick="return confirm('Do you really want to update?');"/>
It's working fine but the problem is i also applied some validation controls on my form fields so if a user leave any field blank and click update button then it shows javascript confirm box and the validation message below that form field.
And it is not desired behavior it should not show the confirmation box until unless all validation are passed.
I hope this is due to because i am using this on client click so please tell me a better solution for that.
Thanks in advance.
you can use Page_ClientValidate in your own confirm function to decide whether to display the confirmation dialog.
Something like:
function validateAndConfirm(message){
var validated = Page_ClientValidate('group1');
if (validated){
return confirm(message);
}
}
And on the server you will have something like:
<asp:textbox id="TextBox1" runat="server"/>
<asp:requiredfieldvalidator ValidationGroup="group1"
ErrorText="Need to Fill in Value!"
ControlToValidate="TextBox1"
runat="server"/>
<asp:textbox id="TextBox2" runat="server"/>
<asp:requiredfieldvalidator ValidationGroup="group1"
ErrorText="Need to Fill in Value!"
ControlToValidate="TextBox2"
runat="server"/>
And your button code will change to:
<asp:Button ID="btnCustomerUpdate" runat="server" CssClass="applybuttonstyle"
Text="Update" onclick="btnCustomerUpdate_Click" ValidationGroup="group1"
OnClientClick="return validateAndConfirm('Do you really want to update?');"/>
Obviously, I cannot test this, but you get the idea.
If you will be using Page_ClientValidate you might find this SO question useful.
You can call the Page_ClientValidate method to ensure the page is valid before asking the user:
if (typeof(Page_ClientValidate) == 'function' && Page_ClientValidate() == false) {
return false;
} else {
return confirm('Do you really want to update?');
}
You should atleast apply validation on client side first and than open a confirmation dialog,
while on server, you have to use server side validation first too in case if user has disabled javascript, and than update the record.
You can also use AJAX to update record, so if a validation message occurs, shows error message and if the validation passed, than you can alert the user but the only disadvantage of using that is you have to re-post the data again. To mitigate this problem you either have to save in temporary table, until user gave confirmation and than delete it from temporary table but obviously it takes a lot of work.
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...