【C#代码段】ajax从asp后台获取数据

前台获取

 1 $.ajax({
 2             //url: "demo/data/taskTree.txt",
 3             url: "GanttChart.aspx?taskList=1" ,
 4             cache: false,
 5             success: function (text) {
 6                 var data = mini.decode(text);
 7  
 8                 gantt.loadTasks(data);
 9  
10                 gantt.unmask();
11  
12                 //折叠全部
13                 //gantt.collapseAll();
14             }
15         });

获取标志

 if (Request.QueryString["taskList" ] != null)
            {
                GetTaskList();
            }

准备数据

 1 StringBuilder taskStr = new StringBuilder ( "[");
 2             using (SqlConnection conn = new SqlConnection(connString))
 3             {
 4                 conn.Open();
 5                 string strSQL = @"select * from Tasks order by OrderNumber" ;
 6                 //SqlCommand cmd = new SqlCommand(strSQL, conn);
 7                 //SqlDataReader rdr = cmd.ExecuteReader();
 8                 SqlDataAdapter myda = new SqlDataAdapter(strSQL, conn);
 9                 DataSet myds = new DataSet();
10                 myda.Fill(myds);
11                 DataTable tb = myds.Tables[0];
12                 for (int i = 0; i < tb.Rows.Count; i++)
13                 {
14                     DataRow row = tb.Rows[i];
15                     int UID = int .Parse(row[ "OrderNumber"].ToString());
16                     string taksName = row["Title" ].ToString();
17                     DateTime StartDate = DateTime .Parse(row[ "StartDate"].ToString());
18                     DateTime DueDate = DateTime .Parse(row[ "DueDate"].ToString());
19                     TimeSpan ts = DueDate.Subtract(StartDate);
20                     int FatherTask = int .Parse(row[ "FatherTask"].ToString());
21                     int datelenth = ts.Days;
22                     taskStr.Append( "{" );
23                     taskStr.Append( "'UID': '" + UID + "'," );
24                     taskStr.Append( "'Name': '" + taksName + "'," );
25                     taskStr.Append( "'Duration': " + datelenth + "," );
26                     taskStr.Append( "'Start': '" + StartDate.ToString() + ":T00:00:00" + "',");
27                     taskStr.Append( "'Finish': '" + DueDate.ToString() + ":T00:00:00" + "',");
28  
29                     taskStr.Append( "'PercentComplete': " + 0 + "," );
30                     if (FatherTask == -1)
31                         taskStr.Append( "'Summary': " + 1 + "," );
32                     else
33                         taskStr.Append( "'Summary': " + 0 + "," );
34                     taskStr.Append( "'Critical': " + 1 + "," );
35                     taskStr.Append( "'Milestone': " + 0 + "," );
36                     taskStr.Append( "'PredecessorLink': 0," );
37                     taskStr.Append( "'ParentTaskUID': " + FatherTask + "," );
38                     taskStr.Append( "}" );
39                     if (i != tb.Rows.Count - 1)
40                         taskStr.Append( "," );
41                 }
42                 taskStr.Append( "]" );
43             }
44             Response.Write(taskStr.ToString());
45             Response.End();