I am looking for something that will catch if the user does not enter a
valid time. For example if they were to enter 0995 instead of 0955.

What I need is if they do enter a wrong value that a msgbox would pop up
telling them there value was not correct and then reselect the textbox so
that the value can be changed.


Below is my code as it stands now.

Private Sub TextBox11_AfterUpdate()

TextBox11.Value = Format(Application.Text(Replace(TextBox11.Value, ":",
""), "00\:00"), "hh:mm")

If TextBox12.Value "" Then
If TextBox11.Value "" Then

TextBox13.Value = (TimeValue(TextBox12.Value) -
TimeValue(TextBox11.Value)) * 24
TextBox13.Value = Format(TextBox13.Value, "0.0000")

TextBox1.Value = CDbl("0" & TextBox13.Value) + CDbl("0" &
TextBox23.Value) + CDbl("0" & TextBox33.Value) + CDbl("0" & TextBox43.Value)
+ CDbl("0" & TextBox53.Value) + CDbl("0" & TextBox63.Value) + CDbl("0" &
TextBox14.Value) + CDbl("0" & TextBox24.Value) + CDbl("0" & TextBox34.Value)
+ CDbl("0" & TextBox44.Value) + CDbl("0" & TextBox54.Value) + CDbl("0" &
TextBox64.Value)
TextBox1.Text = Format(TextBox1.Text, "0.0000")

End If
End If


'Test that to see if hours worked exceeds shift length

If TextBox12.Value "" Then
If TextBox11.Value "" Then

TextBox2 = TextBox4 - TextBox1

End If

If TextBox2.Value < 0 Then
TextBox2.Value = 0
GoTo Finished
End If

TextBox2 = TextBox4 - TextBox1
TextBox2.Text = Format(TextBox2.Text, "0.0000")

End If

Finished:

If TextBox12.Value = "" Then
TextBox13.Value = ""
End If

If TextBox11.Value = "" Then
TextBox13.Value = ""
End If

End Sub