Jquery Ajax传送和接收DataTable的asp.net代码

本文章讲一下关于jquery ajax传送和接收datatable的asp教程.net代码哦，下面我来举例说明一下ajax传送和接收datatable的实例吧。

asp.net教程代码

简单举例说明

webservices：

[webmethod(true)]
  [scriptmethod(responseformat = responseformat.xml)] 
  public string competitor(string sl_id)
  {
  dataset ds;
  slcompetitor slcompetitor =new slcompetitor();
  ds = slcompetitor.getslcompetitor(int.parse(sl_id));
  return ds.getxml();
  }

js：
 

$$.ajax({
  type: "post",
  url:"../webservices/advquerycarwebservice.asmx/deciderdetai",
  data:"{sl_id:"+sl_id+"}",
  datatype: "xml",
  contenttype: "application/json",
  error:function(data){
  alert("加载时出错,详情:"+data.status+">>>"+data.statustext);
  },  
  success:function(getxml) {
  tabledecider.removechild(tbodydecider);
  $$(getxml).find("table").each(function(i){//xml 目录id
  var name=$$(this).children("stakeholder").text(); //取文本

asp.netx文件

void ihttphandler.processrequest(httpcontext context)
        {
           // context.response.contenttype = "text/json";

            int bids=0;
            int.tryparse(context.request.querystring["bid"].tostring(), out bids);//项目id

            int pid = 0;
            int.tryparse(context.request.querystring["productid"].tostring(),out pid);//产品id

            if (bids != 0 && pid != 0)
            {
                datatable dt = logic.bidaddress.getbidaddresstobidandproductidlist(bids, pid);
                if (dt.rows.count != 0)
                {
                    using (jsonwriter jsont = new jsontextwriter(context.response.output))
                    {
                        jsont.writestartarray();
                        foreach (datarow itemrow in dt.rows)
                        {
                            jsont.writestartobject();

                            jsont.writepropertyname("baid");//table id
                            jsont.writevalue(itemrow["baid"]);

                            jsont.writepropertyname("ps教程address"); //address
                            jsont.writevalue(itemrow["psaddress"]);

                            jsont.writepropertyname("quantity");//数量
                            jsont.writevalue(itemrow["quantity"]);

                            jsont.writepropertyname("unit");//单位
                            jsont.writevalue(itemrow["unit"]);

                            jsont.writepropertyname("note");//备注
                            jsont.writevalue(itemrow["note"]);

                            jsont.writepropertyname("contactman");//联系人
                            jsont.writevalue(itemrow["contactman"]);

                            jsont.writepropertyname("contactmobile");//联系人手机
                            jsont.writevalue(itemrow["contactmobile"]);

                            jsont.writepropertyname("bid");//项目id
                            jsont.writevalue(itemrow["bid"]);

                            jsont.writepropertyname("productid");//产品id
                            jsont.writevalue(itemrow["productid"]);
                            jsont.writeendobject();
                        }
                        jsont.writeendarray();
                    }
                }
                else
                {
                    context.response.output.write("[]");
                }
            }
        }

实例代码二

/// 页面加载时
///
///
///
protected void page_load(object sender, eventargs e)
{
//判断是否异步请求
if (request.querystring["ajax"] == "1")
{
processrequest();
}
}
///

/// 处理异步请求
///

private void processrequest()
{
response.contenttype = "text/html";
string json = request.form["json"];
//反序列化datatable
datatable newdtb = json2dtb(json);
//序列化datatable为json
string back = dtb2json(newdtb);
response.write(back);
response.end();
}
///

/// datatable转json
///

///
///
private string dtb2json(datatable dtb)
{
网页特效serializer jss = new javascriptserializer();
arraylist dic = new arraylist();
foreach (datarow row in dtb.rows)
{
dictionary drow = new dictionary();
foreach (datacolumn col in dtb.columns)
{
drow.add(col.columnname, row[col.columnname]);
}
dic.add(drow);
}
return jss.serialize(dic);
}
///

/// json转datatable
///

///
///
private datatable json2dtb(string json)
{
javascriptserializer jss = new javascriptserializer();
arraylist dic = jss.deserialize(json);
datatable dtb = new datatable();
if (dic.count > 0)
{
foreach (dictionary drow in dic)
{
if (dtb.columns.count == 0)
{
foreach (string key in drow.keys)
{
dtb.columns.add(key, drow[key].gettype());
}
}
datarow row = dtb.newrow();
foreach (string key in drow.keys)
{
row[key] = drow[key];
}
dtb.rows.add(row);
}
}
return dtb;
}

jquery代码

如果datatable与json类型可以方便的相互转换，都可以迎刃而解了。
优点：1）避免不必要的回传；
2）精简异步请求数据的大小 ；
3）解决数据量较大时，数据发送与接收繁琐的问题。