jquer ajax

namespace ENTERPRISE.GeneralFile
{
/// <summary>
/// GeneralFile 的摘要说明
/// </summary>
public class GeneralFile : IHttpHandler, System.Web.SessionState.IRequiresSessionState
{
public void ProcessRequest(HttpContext context)
{
try
{
context.Response.ContentType = "text/plain";
string strPageName = HttpUtility.UrlDecode(context.Request.QueryString["PageName"]);
if (strPageName == "COMPANYINFO")
{
string strCompCode = HttpUtility.UrlDecode(context.Request.QueryString["TRCODE_CO"]);
//返回json序列
var enterpriseOinfohead = new EnterpriseEinfoHeadBodyPresenter(null);
// var SelectInfo = enterpriseOinfohead.SelectEInfo("TRADE_CO", strCompCode);
DataTable dt = enterpriseOinfohead.SelectCompanyInfo(strCompCode);
string jsonstr = string.Empty;
if(dt!=null)
{
jsonstr = JsonConvert.SerializeObject(dt, new DataTableConverter());
}
context.Response.Write(jsonstr);
}
}
catch (Exception e)
{
string ss = e.Message;
}
}

public bool IsReusable
{
get
{
return true;
}
}
}
}

一般处理文件
一般处理文件里访问数据库，如果要获取上下文，或sseion要

引用

System.Web.SessionState.IRequiresSessionState或IReadOnlySessionState

有时不进入后台，注意js里的： contentType: "application/json; charset=utf-8",