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Custom Validation doesn't fire

Here are my lines of code:
For the Textbox and the CustomValidator:
<asp:TextBox ID="Edit_Tbox_Email" runat="server" placeholder="Email Address..." CausesValidation="true" ValidationGroup="submission"></asp:TextBox>
<asp:CustomValidator runat="server" ControlToValidate="Edit_Tbox_Email" ID="cv_Email" OnServerValidate="cv_Email_ServerValidate" ErrorMessage="!" data-toggle="tooltip" title="Invalid Input!" ValidationGroup="submission"></asp:CustomValidator>
This is for the Button to allow the user to change his/her email:
<asp:Button ID="Edit_But_Email" runat="server" Text="Change" CssClass="btn btn-small" OnClick="Edit_But_Email_Click" ValidationGroup="submission" CausesValidation="true"/>
On server side:
protected void Edit_But_Email_Click(object sender, EventArgs e)
{
if(Page.IsValid)
Edit_Lab_Email.Text = Edit_Tbox_Email.Text;
}
protected void cv_Email_ServerValidate(object source, ServerValidateEventArgs args)
{
string emailRegex = "^\\w+[\\w-\\.]*\\#\\w+((-\\w+)|(\\w*))\\.[a-z]{2,3}$";
if (Edit_Tbox_Email.Text.Length == 0 || Regex.IsMatch(Edit_Tbox_Email.Text, emailRegex))
{
cv_Email.IsValid = false;
}
}
But the problem here is that cv_Email_ServerValidate() doesn't even fire. Basically, it doesn't validate the Textbox. Also, I don't want to use the RequiredFieldValidator and RegularExpressionValidator. I want to combine their functionalities into just one validator. And as much as possible I would like to use the code behind(c#) only and not by jQuery. Thank You!

Your button have a ValidationGroup but your CustomValidator don't have one. If you want your button to valide it, you must set the same ValidationGroup.
Edit:
You have to set ValidateEmptyText="true" otherwise, it won't validate empty value.

How can I tell which button in a repeater got pressed?

I have the following markup in an .aspx file:
<asp:Repeater ID="ListOfAssignments" runat="server" OnItemDataBound="ListOfAssignments_ItemDataBound">
<ItemTemplate>
<asp:Label ID="AssignmentID" runat="server" Text="Label"></asp:Label>
<br />
<asp:Label ID="PathToFile" runat="server" Text="Label"></asp:Label>
<br />
<asp:Button ID="RemoveAssignment" runat="server" Text="Remove" OnClick="RemoveAssignment_Click"/>
</ItemTemplate>
</asp:Repeater>
There are two labels and a button in a fairly standard repeater control. The repeater is bound to a database, and populates the labels with records from the database.
Here's my problem: I have a click event for each button in the repeater. The RemoveAssignment_Click method is called when the user clicks any of the buttons. In the click event, I want to know the text of the two labels associated with whatever button the user clicked.
What I mean is, in this method:
protected void RemoveAssignment_Click(object sender, EventArgs e)
{
//code goes here
}
I want to be able to know the text of the labels that are adjacent to the button that was clicked. How do I do that?

What you are looking for is the Button.OnCommand Method:
This allows you to create multiple Button controls on a Web page and
programmatically determine which Button control is clicked.
So inside ListOfAssignments_ItemDataBound you'd assign the CommandArgument to the button, where the CommandArgument is the ID of the article to be deleted:
protected void ListOfAssignments_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
Button delButton = e.Item.FindControl("RemoveAssignment") as Button;
delButton.CommandArgument = //set to the value of AssignmentID
//rest of your code
}
}
And now your button should say to use your new OnCommand:
<asp:Button ID="RemoveAssignment" OnCommand="RemoveAssignment" runat="server" Text="Remove" />
And then you create the method:
protected void RemoveAssignment(object sender, CommandEventArgs e)
{
int articleIDToDelete = 0;
if (Int32.TryParse((string)e.CommandArgument, out articleIDToDelete))
{
//delete the article with an ID = articleIDToDelete
}
}

You can add CommandName and CommandArgument attributes to the button tag and use them as a hint. And then in your even handler you can do e.CommandName == "xxx" or e.CommandArgument == "xxx". You can also use CommandArgument to pass the actual strings. You just need to bind the data just like you would do with a label, text, etc:
<asp:Button ID="RemoveAssignment" runat="server" CommandArgument='<%#Eval("Label1")+","+ Eval("Label2")%>' Text="Remove" OnClick="RemoveAssignment_Click"/>
Then in the event handler you can do something like:
string[] args = e.CommandArgument.ToString().Split(new char[] {','});
string label1 = args[0];
string label2 = args[1];
This should get you going.

Hm, I know c# and wp but you should try to set a bool and use this logic: if it is false, repeat will continue and if it is true, it'll exit the repeat. try this:
bool exit;
void Button_Click(eventargs stuffy here)
{
exit = true,
}
void Repeat()
{
if (exit == false)
{
Repeat();
//Your code here
}
}

The RequiredFieldValidator for a drop down control inside of user control does not fire

Following is the test scenario for my code.
1) Once the user selects one of the radio buttons on Webpage.aspx, a modal popup extender shows up.
2) A user control (SSL_Ticket.ascx) is defined inside the modal popup window.
3) A RequiredFieldValidator is defined for a drop down list contained inside the user control.
4) If the user selects the "0" value from drop down list, no validation error message is displayed.
Code
Webpage.aspx
<asp:RadioButtonList ID="RadioButtonListForTicket" runat="server" AutoPostBack="true"
OnSelectedIndexChanged="radioButtonListForTicket_OnSelectedIndexChanged">
<asp:ListItem Selected="True">No</asp:ListItem>
<asp:ListItem>Yes</asp:ListItem>
</asp:RadioButtonList>
<ajaxToolkit:ModalPopupExtender ID="ModalPopupExtenderForTicket" runat="server" BackgroundCssClass="popUpStyle"
DropShadow="true" PopupControlID="divTicketPreview" PopupDragHandleControlID="panelDragHandle"
TargetControlID="btnForPopupAppear" CancelControlID="btnForPopupDisappear"/>
....
...
Webpage.aspx.cs
protected void radioButtonListForTicket_OnSelectedIndexChanged(object sender, System.EventArgs e)
{
if (RadioButtonListForTicket.SelectedItem.Text.ToString().Equals("Yes"))
{
// Check if the sites are selected
updateSelectionCount();
updateListOfSites();
if (selectionCount == 0)
{
lblSSLTicketSelection.Text = "Please select a site.";
RadioButtonListForTicket.SelectedValue = "No";
return;
}
else
{
lblSSLTicketSelection.Text = "";
}
....
ModalPopupExtenderForTicket.Show();
}
}
...
SSL_Ticket.ascx
<asp:DropDownList ID="cmbRootCause" runat="server" Width="255px" OnSelectedIndexChanged="cmbRootCause_SelectedIndexChanged" AutoPostBack="true"
CausesValidation="true">
<asp:ListItem Value="0">Select</asp:ListItem>
<asp:ListItem Value="1">Item1</asp:ListItem>
</asp:DropDownList>
<asp:RequiredFieldValidator ID="reqdFieldForRootCause" runat="server" ControlToValidate="cmbRootCause" InitialValue="Select"
ErrorMessage="Please select root cause" ValidationGroup="validateRootCause" Visible="false" Display="Dynamic" EnableClientScript="true">
</asp:RequiredFieldValidator>
...
SSL_Ticket.ascx.cs
protected void cmbRootCause_SelectedIndexChanged(object sender, EventArgs e)
{
if (cmbRootCause.SelectedItem.ToString().Equals("Other"))
{
lblcmbRootCause.Text = "";
lblcmbRootCause.Visible = false;
txtRootCauseOther.Visible = true;
}
else if (cmbRootCause.SelectedItem.ToString().Equals("Select"))
{
lblcmbRootCause.Visible = true;
lblcmbRootCause.Text = "Please select root cause";
}
else
{
lblcmbRootCause.Text = "";
lblcmbRootCause.Visible = false;
txtRootCauseOther.Visible = false;
}
}
I did browse through couple of solutions (ValidateProperty, Client-side validation, RangeValidation, etc), but it did not fire validation text.
This did not help - Handling RequiredFieldValidator inside of a User Control
I'd appreciate your help very much.
Thanks!!!

Remove visible = false attribute from required field validator, by default they won't show up in the beginning.
<asp:RequiredFieldValidator ID="reqdFieldForRootCause" runat="server" ControlToValidate="cmbRootCause" InitialValue="Select"
ErrorMessage="Please select root cause" ValidationGroup="validateRootCause" **Visible="false"** Display="Dynamic" EnableClientScript="true">
</asp:RequiredFieldValidator>

Well in your 'RequiredFieldValidator' for your DropDownList you need to remove this:
InitialValue="Select"

Custom validator getting invoked onclick of all controls on the page

i have written a custom validation function to check if a panel is displayed
i want the function to be invoked onclick of NEXT button.
But instead it gets invoked onclick of every button on the page.
Here is the code:
function Validate(sender, args)
{
if (document.getElementById("Panel1").style.display == 'none') {
args.IsValid = false;
}
else {
args.IsValid = true;
}
}
and this is the button code onclick of which it should be invoked.
<asp:Button ID="btnNext" runat="server" Text="Next" Font-Bold="True" CssClass="InputButton" OnClick="btnNext_Click" />
<asp:CustomValidator ID="cvValidate" runat="server" ErrorMessage="Panel has no data." ClientValidationFunction="Validate" Display="none" EnableViewState="false"></asp:CustomValidator>
if i set Controltovalidate="btnNext" then it again throws me error.
"btnNext cannot be validated".

You need to hook it to the right element.
document.getElementById("btnNext").onclick = function() {
//Do Your Stuff Here
};
Angela

Hey i did a very simple solution to my problem.
first is the java script code that ws getting invoked onclick of evry button on the page.
function Validate(sender, args)
{
if (document.getElementById("Panel1").style.display == 'none') {
args.IsValid = false;
}
else {
args.IsValid = true;
}
}
Then on the Next button:
<asp:Button ID="btnNext" runat="server" Text="Next" Font-Bold="True" CssClass="InputButton" OnClick="btnNext_Click" />
<asp:CustomValidator ID="cvValidate" runat="server" ErrorMessage="Panel has no data." ClientValidationFunction="Validate" Display="none" EnableViewState="false"></asp:CustomValidator>
and for the rest of buttons i did set causesvalidation=false property. with this the function wwas getting invoked only on Next button

Using validators to ensure that user filled either one of two required fields

I have an ASP.NET form for currency exchange requests. There are two text fields there: amount-source and amount-target.
One of them must be filled and only one.
How to implement this using Validators, if applicable?

You can use Custom Validators for this:
<asp:Textbox id="textbox1" runat="server" />
<asp:CustomValidator id="valCustom" runat="server"
ControlToValidate="textbox1"
ClientValidationFunction="ClientValidate"
OnServerValidate="ServerValidate"
ErrorMessage="*You can only enter 1" display="dynamic">*
</asp:CustomValidator>
<asp:Textbox id="textbox2" runat="server" />
<asp:CustomValidator id="valCustom2" runat="server"
ControlToValidate="textbox2"
ClientValidationFunction="ClientValidate"
OnServerValidate="ServerValidate"
ErrorMessage="*You can only enter 1" display="dynamic">*
</asp:CustomValidator>
<script language="Javascript">
function ClientValidate(source, arguments)
{
var tb1 = document.getElementById("<%=textbox1.ClientID %>").value;
var tb2 = document.getElementById("<%=textbox2.ClientID %>").value;
if (tb1 && tb2 || (!tb1 && !tb2)){
arguments.IsValid = false;
} else {
arguments.IsValid = true;
}
}
</script>
Server-side:
protected void ServerValidate(object sender, ServerValidateEventArgs args)
{
if(string.isNullOrEmpty(textbox1.Text) && string.isNullOrEmpty(textbox2.Text))
args.IsValid = false;
else if(!string.isNullOrEmpty(textbox1.Text) && !string.isNullOrEmpty(textbox2.Text))
args.IsValid = false;
else
args.IsValid = true;
}
If you're using jQuery please comment...this can all be much cleaner.

I would implement a custom Validator and decorate both TextBoxes with it. If both are filled, then both are in a error state.