asp.net实现中英文多域名检测的方法

/****写入js代码****/
<%-- 域名检测 --%>
<script type="text/javascript">
 //判断输入的是否为中文域名
 function IsChDomain(domainStr)
 {
 var flag = false;
 var compStr = "ABCDEFGHIGKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_0123456789";
 var domainLength = domainStr.length;//判断字符长度
 for(var i = 0;i < domainLength;i++)
 {
 var temp = domainStr.charCodeAt(i);
 if(temp >= 10000)//含有字符编码大于10000的字符判断为中文，不太严格
 {
 flag=true;
 }
 else
 {
 var temp2 = compStr.indexOf(domainStr.charAt(i));
 if(temp2 == -1)
 {
 flag = false;
 break;
 }
 }
 }
 return flag;
 }
 //判断输入的是否为英文域名
　　function IsEnDomain(domainStr)
　　{
 var flag = false;
 var compStr = "ABCDEFGHIGKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_0123456789";
 var domainLength = domainStr.length;
 for(var i = 0;i<domainLength;i++)
 {
 if(compStr.indexOf(domainStr.charAt(i)) == -1)
 {
 flag = false;
 break;
 }
 else
 {
 flag = true;
 }
 }
 return flag;
 }
 //中国等不能注册英文域名,把相应的CheckBox的disabled属性设置为true，
 function Trim(domainStr)
 {
 return domainStr.replace(/(^s*)|(s*$)/g, "");
 }
 //验证域名是哪一类型的
　　function checkDomainType()
 {
 var domainName = document.getElementById("txtDomainName").value;
 domainName = Trim(domainName);//去掉输入的特殊符号
 if(IsChDomain(domainName))//调用中文域名----------验证方法
 {
 setCheckBox(true);
 }
 else if(IsEnDomain(domainName))//调用英文域名-----验证方法
 {
 setCheckBox(false);
 }
 }
 //为CheckBox复选框的Checked属性赋值
　　function setCheckBox(flag)
 {
 document.getElementById("chkcom").disabled = flag;
 document.getElementById("chknet").disabled = flag;
 document.getElementById("chkorg").disabled = flag;
 document.getElementById("chkorgcn").disabled = flag;
 document.getElementById("chkcn").disabled = flag;
 document.getElementById("chkcomcn").disabled = flag;
 document.getElementById("chknetcn").disabled = flag;
 document.getElementById("chkgovcn").disabled = flag;
 document.getElementById("chkcouk").disabled = flag;
 document.getElementById("chkbiz").disabled = flag;
 document.getElementById("chkcc").disabled = flag;
 document.getElementById("chktv").disabled = flag;
 document.getElementById("chkinfo").disabled = flag;
 document.getElementById("chkchina").disabled = !flag;
 document.getElementById("chkcompany").disabled = !flag;
 document.getElementById("chknetwork").disabled = !flag;
 document.getElementById("chkorguk").disabled = flag;
 document.getElementById("chkus").disabled = flag;
 document.getElementById("chkmeuk").disabled = flag;
 document.getElementById("chkltduk").disabled = flag;
 }
 //检查输入的字符规范
// function checkValue()
// {
// if(document.getElementById("txtDomainName").value=='')
// {
// alert('请输入域名！');
// return false;
// }
// if(document.getElementById("txtDomainName").value.length >= 60)
// {
// alert('域名长度不能超过60个字符！');
// return false;
// }
// for(var i = 0;i < document.getElementById("txtDomainName").value.length;i++)
// {
// if(document.getElementById("txtDomainName").value.charAt(i) == ' ')
// {
// alert('域名中不能含有空格！');
// return false;
// break;
// }
// }
// }
</script>
/***写入相关控件***/
//用于显示查询的结果
<asp:Panel ID="indexpnlDomainName" runat="server" Width="100%" />
//
<table width="373" border="0" cellpadding="0" cellspacing="1">
 <tr>
 <td width="74" height="41">
<asp:CheckBox ID="chkcom" Text=".com" runat="server" />
 </td>
 <td width="71" height="41">
 <asp:CheckBox ID="chkcn" Text=".cn" runat="server" />
 </td>
 <td width="79" height="41">
 <asp:CheckBox ID="chkorg" Text=".org" runat="server" />
 </td>
 <td width="71" height="41">
 <asp:CheckBox ID="chknet" Text=".net" runat="server" />
 </td>
 <td width="72" height="41">
 <asp:CheckBox ID="chkinfo" Text=".info" runat="server" />
 </td>
 </tr>
 <tr>
 <td width="74" height="41">
 <asp:CheckBox ID="chkcomcn" Text=".com.cn" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chkcc" Text=".cc" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chkorgcn" Text=".org.cn" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chknetcn" Text=".net.cn" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chkin" Text=".in" runat="server" />
 </td>
 </tr>
 <tr>
 <td width="74" height="40">
 <asp:CheckBox ID="chkcouk" Text=".co.uk" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chktv" Text=".tv" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chkorguk" Text=".org.uk" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chkus" Text=".us" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chkmeuk" Text=".me.uk" runat="server" />
 </td>
 </tr>
 <tr>
 <td width="74" height="41">
 <asp:CheckBox ID="chkltduk" Text=".ltd.uk" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chkbiz" Text=".biz" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chknetwork" Text=".网络" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chkcompany" Text=".公司" runat="server" />
 </td>
 <td height="41">
 <asp:CheckBox ID="chkchina" Text=".中国" runat="server" />
 </td>
 </tr>
</table>

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text; //（需要引入的类文件命名空间）
using System.Net.Sockets; //（需要引入的类文件命名空间）
using System.Text.RegularExpressions; //（需要引入的类文件命名空间）
using System.Collections.Generic; //（需要引入的类文件命名空间）
using System.Data.Common; //（需要引入的类文件命名空间）
using System.Xml; //（需要引入的类文件命名空间）
using System.IO; //（需要引入的类文件命名空间）
using Microsoft.SqlServer.Server; //（需要引入的类文件命名空间）
using System.Net; //（需要引入的类文件命名空间）
//判断是否为中文域名(方法)
public static bool IsHasCHZN(string domainName)
{
 Regex RegCHZN = new Regex("[一-龥]");
 Match m = RegCHZN.Match(domainName);
 return m.Success;
}
//判断域名是否被注册(方法)
public static bool IsReg(string domainName)
{
 bool flag = false;
 string dm = HttpContext.Current.Server.UrlEncode(domainName);
 try
 {
 //判断方法非常多，如打开远程文件再处理字符串等等，这里用的方法效率不是很高
 WebClient wc = new WebClient();
 string xmlstr = wc.DownloadString("http://panda.www.net.cn/cgi-bin/check.cgi?area_domain=" + dm);
StringReader sr = new StringReader(xmlstr);
XmlTextReader xr = new XmlTextReader(sr);
while (xr.Read())
 {
 if (xr.IsStartElement("original"))
 {
 xr.Read();
 if (xr.Value.Substring(0, 3) == "210")
 {
 flag = true;
 break;
 }
 else
 {
 flag = false;
 break;
 }
 }
 }
 return flag;
 }
 catch
 {
 return false;
 }
}
//按钮事件中
protected void imgBtnCheck_Click(object sender, ImageClickEventArgs e)
{
 string txtYM = this.txtYMname.Text.Trim();
 if (txtYM == "")
 { ScriptManager.RegisterStartupScript(this, this.GetType(), "sc", "alert('对不起，域名不能为空！');", true); }
 else
 {
 string domainName = this.txtYMname.Text.Trim();
 IList<string> domainList = new List<string>();//保存域名名称和后缀
domainList.Add(domainName);//List<string>第一元素保存域名名称，其他元素为域名后缀
 //判断是否为中文域名
 if (IsHasCHZN(domainName))
 {
 if (chkchina.Checked) domainList.Add(chkchina.Text);
if (chkcompany.Checked) domainList.Add(chkcompany.Text);
if (chknetwork.Checked) domainList.Add(chknetwork.Text);
 }
 else
 {
 if (chkcom.Checked) domainList.Add(chkcom.Text);
 if (chknet.Checked) domainList.Add(chknet.Text);
 if (chkorg.Checked) domainList.Add(chkorg.Text);
 if (chkorgcn.Checked) domainList.Add(chkorgcn.Text);
 if (chkcn.Checked) domainList.Add(chkcn.Text);
 if (chkcomcn.Checked) domainList.Add(chkcomcn.Text);
 if (chknetcn.Checked) domainList.Add(chknetcn.Text);
 if (chkinfo.Checked) domainList.Add(chkinfo.Text);
 if (chkcouk.Checked) domainList.Add(chkcouk.Text);
 if (chkbiz.Checked) domainList.Add(chkbiz.Text);
 if (chkcc.Checked) domainList.Add(chkcc.Text);
 if (chktv.Checked) domainList.Add(chktv.Text);
 if (chkorguk.Checked) domainList.Add(chkorguk.Text);
 if (chkus.Checked) domainList.Add(chkus.Text);
 if (chkmeuk.Checked) domainList.Add(chkmeuk.Text);
 if (chkltduk.Checked) domainList.Add(chkltduk.Text);
 if (chkin.Checked) domainList.Add(chkin.Text);
 }
 Session["localpnlDomainName"] = domainList;
//将首页查询的域名结果显示出来
 if (Session["localpnlDomainName"] != null)
 {
 IList<string> il = (IList<string>)Session["localpnlDomainName"];
 if (il.Count > 1)
 {
 string dm = il[0];
 string dname;
 Label lbl;
for (int i = 1; i < il.Count; i++)
 {
 dname = dm + il[i];
 if (IsReg(dname))
 {
 lbl = new Label();
 lbl.ID = "lbl" + i.ToString();
 lbl.Text = string.Format("<p style='font-size:12px;color:green'>{0}    可以注册!</p>", dm + il[i]);
 indexpnlDomainName.Controls.Add(lbl);
}
 else
 {
 lbl = new Label();
 lbl.ID = "lbl" + i.ToString();
 lbl.Text = string.Format("<p><a target='_blank' style='color:red;font-size:12px' title='点击跳转到该域名' href='http://www.{0}'>{1}    已被注册！</a>    <a target='_blank' style='font-size:12px;color:red' title='点击查看详细信息' href='http://whois.hichina.com/cgi-bin/whois?domain={2}'>[查看]</a></p>", dm + il[i], dm + il[i], Server.UrlEncode(dm + il[i]));
 indexpnlDomainName.Controls.Add(lbl);
 }
 }
 }
 }
}
}