Create your own Serial Number Code Input using VB.Net

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Create your own Serial Number Code Input using VB.Net

Create your own Serial Number Code Input using VB.Net.

In this tutorial, you will learn how to create your own serial number code input using VB.Net.

First, create your project then drag for text boxes and resize it into small fields just like the example image below:

Create your own Serial Number Code Input using VB.Net

Next, rename your text boxes to serial1, serial2, serial3 and serial4 for you to distinguish which is which.

Then, double click each text box for you to auto-generate the text box changed event and insert this line of code:

  1. Private Sub serial1_TextChanged(sender As Object, e As EventArgs) Handles serial1.TextChanged
  2. If serial1.TextLength = 4 Then
  3. serial1.Enabled = False
  4. serial2.Focus()
  5. Else
  6. serial1.Enabled = True
  7. End If
  8. End Sub

For serial1 text box changed event.

  1. Private Sub serial2_TextChanged(sender As Object, e As EventArgs) Handles serial2.TextChanged
  2. If serial2.TextLength = 4 Then
  3. serial2.Enabled = False
  4. serial3.Focus()
  5. Else
  6. serial2.Enabled = True
  7. End If
  8. End Sub

For serial2 text box changed event.

  1. Private Sub serial3_TextChanged(sender As Object, e As EventArgs) Handles serial3.TextChanged
  2. If serial3.TextLength = 4 Then
  3. serial3.Enabled = False
  4. serial4.Focus()
  5. Else
  6. serial3.Enabled = True
  7. End If
  8. End Sub

For serial3 text box changed event.

  1. Private Sub serial4_TextChanged(sender As Object, e As EventArgs) Handles serial4.TextChanged
  2. If serial4.TextLength = 4 Then
  3. serial4.Enabled = False
  4. Else
  5. serial4.Enabled = True
  6. End If
  7. End Sub

For serial4 text box changed event.

Success! You have learned how to create your own serial number code input using VB.Net.

For questions or any other concerns or thesis/capstone creation with documentation, you can contact me through the following:

E-Mail: [email protected]

Facebook: facebook.com/kirk.lavapiez

Contact No.: +639771069640

Ian Hero L. Lavapiez

BSIT Graduate

System Analyst and Developer

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