Question

I have a page that is trying to login a user. at the top of the page, I have a ValidationSummary control. I don’t have the controls explicitly declared in the page and am calling a static method to add the Validator to the page on an error. (see below)

When the page is submitted, the ValidationSummary appears, however, none of the error messages in the ValidationSummary control display. It’s almost like the control doesn’t know what error text to write to the control.

Do I have to override a method in the BaseValidator in order to display the validator’s error text?

Here is how the validator is added to the page:

Private Sub btnWindowsLogin_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnWindowsLogin.Click     Dim username As String = txtNetworkID.Text.Trim     Dim password As String = txtPassword.Text      If username.IsEmpty Then         ErrorSummary.AddError('Please enter your NT Login', 'WindowsLogin', Page)     End If     If password.IsEmpty Then         ErrorSummary.AddError('Please enter your password', 'WindowsLogin', Page)     End If     If Page.IsValid Then         If Not AuthenticationService.ValidateActiveDirectoryLogin(username, password) Then             ErrorSummary.AddError('The username or password you entered is incorrect', Page)         ElseIf Not UserService.WindowsLoginExists(username) Then             ErrorSummary.AddError('The NT Login entered is not associated with an account in the application', Page)         Else             'Get the user and validate the role, if the user is active, etc...          End If     End If End Sub 

and here is the ErrorSummary class:

Public Class ErrorSummary     Inherits BaseValidator      Public Sub New(ByVal message As String, ByVal validationGroup As String)         MyBase.Text = message         MyBase.ValidationGroup = validationGroup         MyBase.IsValid = False     End Sub      Public Sub New(ByVal message As String)         Me.New(message, String.Empty)     End Sub      Public Shared Sub AddError(ByVal message As String, ByVal page As Page)         AddError(message, String.Empty, page)     End Sub      Public Shared Sub AddError(ByVal message As String, ByVal validationgroup As String, ByVal page As Page)         Dim objError As New ErrorSummary(message, validationgroup)         page.Validators.Add(objError)     End Sub      Protected Overrides Function EvaluateIsValid() As Boolean         Return False     End Function  End Class 

Answer 1

I think you want to set the ErrorMessage property, rather then the Text property.