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[iPol]

I need to know how to make a textbox able to enter any digit between 1-25 but nothing else. I mean how do I disable like anything above 25, I am bad at putting things into words, but hopefully you know what I mean, Thanks.

[Agust1337]

Hello ipol,
Click the textbox on your form, and to the properties, and find something called MaxLenght put it to 25, as shown on the image below.

Capture.PNG

Then if you want the user to not be able to write alphabetical characters, use this:

Code: Select all

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        If TextBox1.Text = "1111122222333334444455555" Then
            MsgBox("valid key!")
        Else
            MsgBox("invalid key!")
        End If
    End Sub

    Private Sub TextBox1_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
        If e.KeyChar <> ChrW(Keys.Back) Then
            If (e.KeyChar.ToString >= "0" And e.KeyChar.ToString <= "9") Then
            Else
                e.Handled = True
            End If
        End If
    End Sub

[mandai]

It is not clear how you would limit the number range with that code.

You can use this:

Code: Select all

    Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged

        Dim number As Integer

        Try
            number = Integer.Parse(TextBox1.Text)
        Catch ex As Exception
            TextBox1.Text = ""
            Return
        End Try

        If number < 1 Or number > 25 Then
            MsgBox("Number is not allowed")
            TextBox1.Text = ""
        End If
    End Sub

[iPol]

Thank you.