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<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>无标题页</title>
<script type="text/javascript" language="javascript">
function submitform()
{
var myForm = document.forms["myform"];
myForm.action ="";
myForm.submit();
}
</script>
</head>
<body>
<form id="ro" runat="server">
<asp:TextBox ID="txtname" runat="server" onpropertychange="submitform()" OnTextChanged="TextBox1_TextChanged"></asp:TextBox>
<asp:Label runat="server" ID="lblname"></asp:Label>
</form>
</body>
</html>
protected void TextBox1_TextChanged(object sender, EventArgs e)
{
lblname.Text = "当前输入的长度为:" + this.txtname.Text.Length.ToString();
}
// 先用 string.Split 对字符串进行分割
string[] numbers = original.Split(
new char[] { ' ', ',', ';', '/', '|', '.', '\r', '\n' },
StringSplitOptions.RemoveEmptyEntries);
// 用于正则验证
string pattern = @"^13[0-9]{1}\d{8}$";
// 然后用 Linq 对字符串进行基本验证和过滤
string[] available = numbers
.Where(number => Regex.IsMatch(number, pattern))
.Distinct().ToArray();
foreach (string number in available)
Console.WriteLine(number);
textbox.text = "123;345;567";
string[] a = split(textbox.text,';');
for(int i =0;i<a.length;i++)
{
if(輸入的號 == a[i])
{
Messagebox.show("有了");
break;
}
}