vb.net code for Random number with letter

How to generating random number with letter in vb.net code

Steps to create a random number generator

 Step1:  File new project ->windows forms application -> rename random number with letter generate

Step2:  Drag and drop the one button, four textboxes from tool box

Step3:  Rename button as generate

Step4: Double click the generate button 

Copy and paste this code

Private Sub Button1_Click(ByVal sender AsSystem.Object, ByVale As System.EventArgs) _ Handles Button1.Click

        Dim rand As New Random

        Dim letter As String

        letter = ChrW(rand.Next(Asc("A"), Asc("F") + 1))

        TextBox1.Text = letter & Int(Rnd() * 9)

        letter = ChrW(rand.Next(Asc("A"), Asc("F") + 1))

        TextBox2.Text = letter & Int(Rnd() * 9)

        letter = ChrW(rand.Next(Asc("A"), Asc("F") + 1))

        TextBox3.Text = letter & Int(Rnd() * 9)

        letter = ChrW(rand.Next(Asc("A"), Asc("F") + 1))

        TextBox4.Text = letter & Int(Rnd() * 9)

    End Sub

Step5:  Run the application

You can alternate the code also

        letter = ChrW(rand.Next(Asc("A"), Asc("F") + 1))

        TextBox1.Text = Int(Rnd() * 99) & letter

        letter = ChrW(rand.Next(Asc("A"), Asc("F") + 1))

        TextBox2.Text = "A" & letter & Int(Rnd() * 9)

        letter = ChrW(rand.Next(Asc("A"), Asc("F") + 1))

        TextBox3.Text = letter & "B"& Int(Rnd() * 9)

        letter = ChrW(rand.Next(Asc("A"), Asc("F") + 1))

        TextBox4.Text = letter & Int(Rnd() * 9)