在做asp.net项目的时候经常会用到ajax操作,现总结常用的ajax操作供平时项目中参考
第一种:
前端代码:
<script type="text/javascript">
$.post("../../tools/GetItemData.ashx", { "canshu1": "参数1的值", "canshu2": "参数2的值" }, function (data) { //返回的是json格式的数据
}, "json"); </script>
后端代码:
public class ceshi : IHttpHandler
{ public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
string pagenumstr = context.Request["canshu1"];
string text = context.Request["canshu2"];
//取得数据FrameHtml
context.Response.Write(new JavaScriptSerializer().Serialize(FrameHtml));
}
}
说明:
if Request.QueryString("ID")==Null这是url栏没有这个ID变量
if Request.QueryString("ID").ToString()=="" 判断ID是否为空
第二种:
前端代码:
<script type="text/javascript">
//验证是否登录
$.ajax({
type: "POST",
url: "{config.webpath}tools/submit_ajax.ashx?action=user_check_login",
dataType: "json",
timeout: 20000,
success: function (data, textStatus) {
if (data.status == 1) { }
}
}); </script>
后端代码:
public void ProcessRequest(HttpContext context)
{
//取得处事类型
string action = EazyRequest.GetQueryString("action"); switch (action)
{ case "user_check_login": //检查用户是否登录
user_check_login(context);
break; case "applyspace": //更新申请
apply_user_space(context);
break;
}
} #region 检查用户是否登录=============================
private void user_check_login(HttpContext context)
{
//检查用户是否登录
Model.users model = new BasePage().GetUserInfo();
if (model == null)
{
context.Response.Write("{\"status\":0, \"username\":\"匿名用户\"}");
return;
}
context.Response.Write("{\"status\":1, \"username\":\"" + model.user_name + "\", \"userid\":\"" + model.id + "\", \"zuid\":\"" + model.group_id + "\"}");
}
#endregion