Removing Numbers in Textbox using VB.Net

Removing Numbers in Textbox using VB.Net

This tutorial is all about Removing Numbers in Textbox using VB.Net With this tutorial about Removing Numbers in Textbox using VB.Net which we can clear number in the textbox.

The variable tmpString was created with an empty string. After that, we created a For Next loop with variable I as an integer equal to zero up to the textbox’s length minus 1.

We placed an If statement inside the loop that says if the textbox has a number, it will be automatically removed. Not returns a Boolean value indicating whether an expression can be evaluated as a number.

IsNumeric returns a Boolean value indicating whether an expression can be evaluated as a number, and Substring – restores the first argument’s substring beginning at the position specified in the second argument and ending at the length specified in the third argument.

So let’s get started:

  • So let’s design our form like this one just like what I’ve shown you below
    Select a Textbox, Button and label from the toolbox.
  • After that,Add this code to the Button.
    [vbnet]
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    Dim rep As String = String.Empty
    For i As Integer = 0 To TextBox1.Text.Length – 1
    If Not IsNumeric(TextBox1.Text.Substring(i, 1)) Then
    rep += TextBox1.Text.Substring(i, 1)
    End If
    Next
    TextBox1.Text = rep
    End Sub
    [/vbnet]
  • After that, Click F5 to run the program.
    Output:
  • After clicking the button:
    Output:

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