29-04-20, 12:06 AM
ممكن شرح الكود
كود :
Dim minimum = 0
Dim maximum = 50
Dim number As Int32
If Not Int32.TryParse(textbox1.Text, number) Then
MessageBox.Show("Please enter a valid integer!")
Return
End If
If number < minimum OrElse number > maximum Then
Dim message = String.Format("Please enter a number less than 50 at a time!",
minimum, maximum)
MessageBox.Show(message)
Return
End If