Vb.Net - Class to Change Textbox BackColor Dynamically
34,021
All you need to do is inherit from the TextBox control.
Public Class TextBoxEx
Inherits TextBox
Private Sub TextBoxEx_Enter(sender As Object, e As EventArgs) Handles Me.Enter
Me.BackColor = Color.LightCyan
End Sub
Private Sub TextBoxEx_Leave(sender As Object, e As EventArgs) Handles Me.Leave
If Me.Text <> "" Then
Me.BackColor = Color.LightGreen
Else
Me.BackColor = Color.White
End If
End Sub
End Class
Build your project and then replace your TextBox controls with the new TextBoxEx control.
Author by
APS
Updated on December 31, 2020Comments
-
APS over 3 years
I'd like to know how to create a Class to change each textbox BackColor inside a Form. To be more Specific:
- When the textbox Is Empty, the textbox BackColor equals White.
- When the textbox Get focus, the textbox BackColor change.
- When the textbox have any text, the textbox BackColor change.
- When the textbox Lost focus, the textbox BackColor change.
At the moment, I'm doing it this way.
Private Sub tb_Login_Enter(sender As Object, e As EventArgs) Handles tb_Login.Enter tb_Login.BackColor = Color.LightCyan End Sub Private Sub tb_Login_Leave(sender As Object, e As EventArgs) Handles tb_Login.Leave If tb_Login.Text <> "" Then tb_Login.BackColor = Color.LightGreen Else tb_Login.BackColor = Color.White End If
But, I have many TextBox in my from, so, how can I create a Class for it?
Thanks