How Do I Set Text Box To Display Numbers Only And The Maximum Value Is 11

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VB

how do i set text box to display numbers only and the maximum value is 11

Posted 17-Feb-14 3:47am

Sissy Ram

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Pete O'Hanlon 17-Feb-14 9:48am

ASP.NET? WPF? Silverlight? Windows Forms?

Sissy Ram 17-Feb-14 9:52am

vb .net, windows forms

Sissy Ram 17-Feb-14 10:03am

Help me please

Sissy Ram 17-Feb-14 10:10am

I tried this simple code but how to set this for all textboxes in the form?
Private Sub textBox1_KeyPress(sender As Object, e As KeyPressEventArgs)
If e.KeyChar <> ControlChars.Back AndAlso e.KeyChar <> "-"C Then
'allow backspace for deleting and minus simbol
e.Handled = Not Char.IsNumber(e.KeyChar)
'allow numbers only
If Not e.Handled Then
Dim num As Integer = Integer.Parse(String.Format("{0}{1}", If(textBox1.Text = String.Empty, "", textBox1.Text), e.KeyChar.ToString()))
If num > 11 Then
e.Handled = True
End If
End If
End If
End Sub

5 solutions

Solution 4

Hi,

You can use the "Tag" property for text box and use the for each loop

like this i am used this for clear all the control on the for which the textbox tag property has "*"

VB

Public Shared Sub ClearEntryControls(ByVal pnl As Panel)
       Dim cnt As Control
       For Each cnt In pnl.Controls
           If (TypeOf cnt Is TextBox Or TypeOf cnt Is Label) And cnt.Tag = "*" Then
               cnt.Text = ""
           ElseIf TypeOf cnt Is NumericUpDown And cnt.Tag = "*" Then
               cnt.Text = 0
           End If
       Next
   End Sub

I hope this will help for you...

Posted 21-Feb-14 2:44am

basurajkumbhar

Solution 3

You can look at these 2 wonderful methods,
int.TryParse(...)[^] and TextBox.MaxLength[^].

-KR

Posted 17-Feb-14 5:28am

Krunal Rohit

Solution 2

I tried this simple code but how to set this for all textboxes in the form

VB.NET

Private Sub textBox1_KeyPress(sender As Object, e As KeyPressEventArgs)
    If e.KeyChar <> ControlChars.Back AndAlso e.KeyChar <> "-"C Then
        'allow backspace for deleting and minus simbol
        e.Handled = Not Char.IsNumber(e.KeyChar)
        'allow numbers only
        If Not e.Handled Then
            Dim num As Integer = Integer.Parse(String.Format("{0}{1}", If(textBox1.Text = String.Empty, "", textBox1.Text), e.KeyChar.ToString()))
            If  num > 11 Then
                e.Handled = True
            End If
        End If
    End If
End Sub

Posted 17-Feb-14 4:12am

Sissy Ram

Updated 21-Feb-14 2:50am

v2

Solution 1

You may start here:
User Input Validation in Windows Forms[^]

Posted 17-Feb-14 4:07am

phil.o

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Mike Meinz · Accepted Answer · 2014-02-21T02:56:00

Use one subroutine to handle the Keypress event for several textboxes.