asp.net Ext grid 显示列表(2)

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Data.SqlClient;
using System.Collections.Generic;
using Newtonsoft.Json;
namespace ExtPra
{
public partial class myGridJson : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
#region 分页
int pagesize = 20;
int start = 1;
string field, asc_desc;
if (string.IsNullOrEmpty(Request["sort"]))
{
field = "EmployeeID";
asc_desc = "asc";
}
else
{
field = Request["sort"];
asc_desc = Request["dir"];
}
if (!string.IsNullOrEmpty(Request["limit"]))
{
pagesize = int.Parse(Request["limit"]);
start = int.Parse(Request["start"]);
}
start = start / pagesize;
start += 1;
#endregion
string strSql = string.Format("select EmployeeID, LastName,FirstName,BirthDate from Employees where EmployeeID between ({0}-1)*{1}+1 and {0}*{1} order by {2} {3} ",start,pagesize,field,asc_desc);
string strConnection = "Data Source=.;Initial Catalog=Northwind;User ID=sa;password=sa";
SqlConnection con = new SqlConnection(strConnection);
SqlDataAdapter da = new SqlDataAdapter(strSql, con);
DataSet ds = new DataSet();
da.Fill(ds, "Employees");
string json = "";
IList<Hashtable> mList = new List<Hashtable>();
try
{
foreach (DataRow row in ds.Tables[0].Rows)
{
Hashtable ht = new Hashtable();
foreach (DataColumn col in ds.Tables[0].Columns)
{
ht.Add(col.ColumnName, row[col.ColumnName]);
}
mList.Add(ht);
}
json = JavaScriptConvert.SerializeObject(mList);
}
catch (Exception ee)
{
string error = ee.Message;
}
// int count = ds.Tables[0].Rows.Count;
int count = 9;
json = "{totalCount:" + count + ",root:" + json + "}";
Response.Write(json);
Response.End();
}
}
}

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