WEBUI/PageModel/Sys_Manage/Ajax/UserAccount_Check.ashx

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<%@ WebHandler Language="C#" Class="UserAccount_Check" %>

using System;
using System.Web;
using Logistics.BLL;
using System.Data;
public class UserAccount_Check : IHttpHandler {
    
    public void ProcessRequest (HttpContext context) {
        context.Response.ContentType = "text/plain";

        HttpRequest request = context.Request;
        HttpResponse response = context.Response;
        string useracount = request.QueryString["user"].ToString();
        Logistics.BLL.User u = new User();
        DataTable dt;
        try
        {
            dt = u.getModelListByWhere("User_Account="+"'"+useracount+"'");
        }
        catch
        {
            dt = null;
        }
        if (dt.Rows.Count > 0)
        {
            response.Write("no");
        }
        else
        {
            response.Write("yes");
        }
      
    }
 
    public bool IsReusable {
        get {
            return false;
        }
    }

}