Numeric value only

Question

hi friend,
in my project for example one textbox i need to type only numbers not the characters if i type the chars it will show
wat shall i do

my idea is it can be done in textbox_keypress event
can anybody give a solution

paul daniel · Answer

Private Sub Text1_KeyPress(KeyAscii As Integer) Dim Counter As Byte Dim IsNumber As Boolean IsNumber = False For Counter = 0 To 9 If Chr$(KeyAscii) = Trim(Counter) Then IsNumber = True Next If Not IsNumber Then MsgBox ("That is not a number.") End Sub

Naresh Kodumuri · Answer

function isNumberKey(evt) { var charCode = (evt.which) ? evt.which : event .keyCode if (charCode > 31 && (charCode 57) ) return false ; return true ; } write this function onkeypress ="return isNumberKey(event)"

Hirendra Sisodiya · Answer

you can use MaskedTextBox also.

kiran kumar · Answer

hello vijay,try this code using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; namespace keypress { public partial class Form1 : Form { public Form1() { InitializeComponent(); this.textBox1.KeyPress += new KeyPressEventHandler(textBox1_KeyPress); } private void Form1_Load(object sender, EventArgs e) { } private void textBox1_KeyPress(object sender, KeyPressEventArgs e) { if(char.IsLetter(e.KeyChar)) { e.Handled = true; MessageBox.Show("enter numeric value"); } } } } MARK THE ANSWER IF IT HELPS YOU

Numeric value only

Answers (4)