https://bugzilla.novell.com/show_bug.cgi?id=353310
Summary: Button Clicked event fires even if another control's
Validation fails
Product: Mono: Class Libraries
Version: 1.2.6
Platform: Other
OS/Version: Other
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Windows.Forms
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
QAContact: [email protected]
Found By: ---
Summary:
User can click a button even if a control's Validation event fails
To Reproduce:
(See code below)
1. Create a form with a textbox and a button
2. Make the textbox always fail its validation event
3. Have the button display a message if clicked
4. Run the form
5. Make sure the focus is in the textbox
6. Click the button
Expected Behaviour (tested with Visual Studio.NET 2008):
Nothing happens (focus does not change, no message is displayed); i.e. button
Clicked event does not occur
Actual Behaviour:
Message is shown
Sample Code (VB.Net):
''' <summary>
''' Test program because Mono allows you to click a button even if a
validating event fails
''' </summary>
Public Class MonoButtonValidation
Private Sub TextBox1_Validating(ByVal sender As Object, ByVal e As
System.ComponentModel.CancelEventArgs) Handles TextBox1.Validating
' Always fail validation
e.Cancel = True
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
' With Visual Studio.NET 2008, this will never be called, because
TextBox1 did
' not validate
MessageBox.Show(Me, "Button clicked!")
End Sub
Private Sub MonoButtonValidation_FormClosing(ByVal sender As Object, ByVal
e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
' Allow form to close, despite validate event
e.Cancel = False
End Sub
End Class
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