detection.aspx.cs

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using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;

public partial class _detection : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        //ajax 检测用户名是否已被使用,注意跟AjaxPro.2.dll的使用方法做比较
        if (Request.QueryString["username"] != null)
        {
            string username = Request.QueryString["username"].ToString().Replace(" ", "");
            if (username.Length > 0 && username.Length < 11 && SqlStore.SqlUserIsexist(username))
                Response.Write("true");
        }
        Response.End();
    }
}