使用FlexiGrid实现Extjs表格效果方法分享(5)

 using System;
 using System.Collections.Generic;
 using System.Configuration;
 using System.Data;
 using System.Data.SqlClient;
 using System.Linq;
 using System.Text;
 using System.Web;
 using System.Web.Services;
 using Newtonsoft.Json;
 namespace GridDemo
 {
     /// <summary>
     /// $codebehindclassname$ 的摘要说明
     /// </summary>
     [WebService(Namespace = "")]
     [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
     public class GetDataSource4 : IHttpHandler
     {
         public void ProcessRequest(HttpContext context)
         {
             context.Response.ContentType = "text/plain";
             //得到当前页
             string CurrentPage = context.Request["page"];
             //得到每页显示多少
             string PageShowLimit = context.Request["rp"];
             //得到主键
             string TableID = context.Request["sortname"];
             //得到排序方法
             string OrderMethod = context.Request["sortorder"];
             //得到要过滤的字段
             string FilterField = context.Request["qtype"];
             //得到要过滤的内容
             string FilterFieldContext;
             if (context.Request.Form["letter_pressed"] == null)
             {
                 FilterFieldContext = "";
             }
             else
             {
                 FilterFieldContext = context.Request["letter_pressed"];
             }
             //得到表的总行数
             string TableRowCount = SqlHelper.ExecuteScalar(ConfigurationManager.AppSettings["SQL2"],
                                     CommandType.Text,
                                     "select count(*) from Person.Address"
                                    ).ToString();
             //得到主SQL
             SqlParameter SQL = new SqlParameter("@SQL", SqlDbType.NVarChar);
             //SQL.Value = "SELECT  * FROM Person.Address";
             if (FilterFieldContext.Length == 0 || FilterField.Length == 0)
             {
                 SQL.Value = "SELECT  AddressID,AddressLine1,AddressLine2,PostalCode,City FROM Person.Address";
             }
             else
             {
                 string[] tmp = FilterField.Split(',');
                 SQL.Value = "SELECT  AddressID,AddressLine1,AddressLine2,PostalCode,City FROM Person.Address where " + tmp[0] + " like '" + FilterFieldContext + "%'";
             }
             SqlParameter Page = new SqlParameter("@Page", SqlDbType.Int);
             Page.Value = Convert.ToInt32(CurrentPage);
             SqlParameter RecsPerPage = new SqlParameter("@RecsPerPage", SqlDbType.Int);
             RecsPerPage.Value = Convert.ToInt32(PageShowLimit);
             SqlParameter ID = new SqlParameter("@ID", SqlDbType.VarChar);
             ID.Value = TableID;
             SqlParameter Sort = new SqlParameter("@Sort", SqlDbType.VarChar);
             Sort.Value = TableID;
             //得到表
             DataTable returnTable = SqlHelper.ExecuteDataset(ConfigurationManager.AppSettings["SQL2"],
                         CommandType.StoredProcedure, "spAll_ReturnRows",
                         new SqlParameter[]
                             {
                                 SQL,Page,RecsPerPage,ID,Sort
                             }).Tables[0];
             context.Response.Write(DtToSON2(returnTable, CurrentPage, TableRowCount));
         }
         /// <summary>
         /// JSON格式转换
         /// </summary>
         /// <param>DataTable表</param>
         /// <param>当前页</param>
         /// <param>总计多少行</param>
         /// <returns></returns>
         public static string DtToSON2(DataTable dt, string page, string total)
         {
             StringBuilder jsonString = new StringBuilder();
             jsonString.AppendLine("{");
             jsonString.AppendFormat("page: {0},\n", page);
             jsonString.AppendFormat("total: {0},\n", total);
             jsonString.AppendLine("rows: [");
             for (int i = 0; i < dt.Rows.Count; i++)
             {
                 jsonString.Append("{");
                 jsonString.AppendFormat("id:'{0}',cell:[", dt.Rows[i][0].ToString());
                 for (int j = 0; j < dt.Columns.Count; j++)
                 {
                     if (j == dt.Columns.Count - 1)
                     {
                         jsonString.AppendFormat("'{0}'", dt.Rows[i][j].ToString());
                     }
                     else
                     {
                         jsonString.AppendFormat("'{0}',", dt.Rows[i][j].ToString());
                     }
                     if (j == dt.Columns.Count - 1)
                     {
                         jsonString.AppendFormat(",'{0}'", "<input type=\"button\" value=\"查看\" id=\"sss\" onclick=\"sss(" + dt.Rows[i][0].ToString() + ")\" />");
                     }
                 }
                 jsonString.Append("]");
                 if (i == dt.Rows.Count - 1)
                 {
                     jsonString.AppendLine("}");
                 }
                 else
                 {
                     jsonString.AppendLine("},");
                 }
             }
             jsonString.Append("]");
             jsonString.AppendLine("}");
             return jsonString.ToString();
         }
         public bool IsReusable
         {
             get
             {
                 return false;
             }
         }
     }
 }

3 页面实现

复制代码 代码如下: