MaskedTextBox Control in VB.Net
A MaskedTextBox control provides validation mechanism for user input on a Form.
By default Masked property is set to None and the control works like a normal
TextBox control.
How use MaskedTextBox Control
Drag and drop MaskedTextBox and Button (change its caption to Submit) control
from toolbox on the window Form.
Code:
Public
Class Form10
Private Sub
Form10_Load(ByVal sender
As System.Object, ByVal
e As System.EventArgs)
Handles MyBase.Load
'Here TextBox is masked as number show you can enter
number only
MaskedTextBox1.Mask = "00000000000000000"
End Sub
Private Sub
Button1_Click(ByVal sender
As System.Object, ByVal
e As System.EventArgs)
Handles Button1.Click
'Enter number will show in Label
Label2.Text = "Entered Number is " + MaskedTextBox1.Text
End Sub
End
Class
Run the project
When you enter other than number then
masketextbox will not accept.Because in code mask is specified as MaskedTextBox1.Mask =
"00000000000000000" which means it will
accept only number.
When you enter number and click Submit Button then click event of submit button
will fire and entered number will show in the Label.
MaskedTextBox Property
UseSystemPasswordChar: Gets or sets a value indicating as
password character.
Private
Sub Form10_Load(ByVal
sender As System.Object,
ByVal e As
System.EventArgs) Handles
MyBase.Load
' entered number will show as password
MaskedTextBox1.UseSystemPasswordChar = True
End
Sub
ForeColor:
ForeColor of
MaskedTextBox can be changed through
ForeColor property of MaskedTextBox.
Private
Sub Form10_Load(ByVal
sender As System.Object,
ByVal e As
System.EventArgs) Handles
MyBase.Load
'change ForeColor of MaskedTextBox
MaskedTextBox1.ForeColor = Color.Red
End
Sub
ForeColor of MaskedTextBox will be changed.
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