Is there a way to disable "Cancle" on OpenFileDialogs and SaveFileDialogs?

[Lucien Montierre]

I have some code that runs on "Ok" for OpenFileDialogs and SaveFileDialogs.
If the user presses cancle without selecting something, the program crashes and gives me a headache because it sets off a chain reaction that I won't get into detail about.

So is there a way to make it so that "Cancle" is grayed out or something on the Dialog Boxes?

If not, is there an alternative that could solve this problem?

Edit: The code that causes the crash (and subsequent headache) doesn't run directly from the "Ok" action

[techgnome]

how are you calling it? You do know that the ShowDialog method will return the a DialogResult that will tell you if they clicked, OK, Save, Open or Cancel...

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim MyDialog As New ColorDialog()
    ' Keeps the user from selecting a custom color.
    MyDialog.AllowFullOpen = False
    ' Allows the user to get help. (The default is false.)
    MyDialog.ShowHelp = True
    ' Sets the initial color select to the current text color,
    MyDialog.Color = TextBox1.ForeColor

    ' Update the text box color if the user clicks OK 
    If (MyDialog.ShowDialog() = Windows.Forms.DialogResult.OK) Then
        TextBox1.ForeColor = MyDialog.Color
    End If
End Sub

Documentation: http://msdn.microsoft.com/en-us/libr...t40c.aspx#Y357

-tg

[jmcilhinney]

Do you really think that preventing the user from not choosing a file would be the best solution? What if the file they want doesn't exist? Should they just leave your program running with the dialogue showing indefinitely?

There are two ways to handle a OFD or SFD. You can do as tg has shown and test the value returned by ShowDialog, or you can handle the FileOK event. In both cases, your code will not be executed unless the user clicks OK. Unless your system is corrupt in some way, you must simply not be writing the code correctly. As you haven't shown us the code, we can only guess at what the problem might be.

[Lucien Montierre]

If (MyDialog.ShowDialog() = Windows.Forms.DialogResult.OK) Then
     
    End If

Did the trick, thanks