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Regex reg = new Regex(@"[0-9]{1,}[,]?");
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
TextBox t = sender as TextBox;
if (e.KeyChar >= '0' && e.KeyChar <= '9')
{
t.SelectedText = string.Concat(e.KeyChar , ',');
e.Handled = true;
}
else if (e.KeyChar == (char)ConsoleKey.Backspace)
{
if (t.SelectionStart >= 2)
{
t.SelectionStart -= 2;
t.SelectionLength = 2;
t.SelectedText = "";
}
e.Handled = true;
}
else
e.Handled = true;
}
Private Sub TextBox1_KeyPress1(ByVal sender As Object, ByValeAsSystem.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If Asc(e.KeyChar) <> Keys.Back Then
If e.KeyChar < "0" Or e.KeyChar > "9" Then
MessageBox.Show("只能输入整数!")
e.Handled = True
Exit Sub
Else
TextBox1.Text = TextBox1.Text.Trim() + ","
End If
End If
End Sub
<head runat="server">
<title>无标题页</title>
<script type="text/javascript">
function input(obj){
var reg=/^(\d,?)*$/;
if(reg.test(obj.value))
obj.value+=",";
else
obj.value=obj.value.replace(/(\d,)[^\d]/g,"$1");
}
</script>
</head>
<body>
<input id="Text1" type="text" onkeyup="input(this)" />
</body>
</html>