Data Code:
Copy codeThe Code is as follows:
Using System;
Using System. Collections. Generic;
Using System. Linq;
Using System. Text;
Using System. Data;
Using System. Data. SqlClient;
Using System. Collections;
Using System. Reflection;
Namespace DAL
{
Public class UserManageClass
{
/// <Summary>
/// Obtain the total number of pages
/// </Summary>
/// <Returns> total number of pages </returns>
Public int GetPageCount ()
{
Int counts;
String SqlStr = "select count (0) from [User]";
Counts = new SQLHelper (). Content (SqlStr, CommandType. Text );
Return counts;
}
/// <Summary>
/// Retrieve the content of each page
/// </Summary>
/// <Param name = "SatrPage"> start page </param>
/// <Param name = "EndPage"> end page </param>
/// <Returns> content of each page </returns>
Public DataTable GetPageDate (string SatrPage, string EndPage)
{
DataTable dt;
String SqlStr = @ "select * from
(Select *, ROW_NUMBER () over (order by id) as no _ from [User]) aa
Where aa. no _ between' "+ SatrPage +" 'and' "+ EndPage + "'";
Dt = new SQLHelper (). ExecuteQuery (SqlStr, CommandType. Text );
Return dt;
}
/// <Summary>
/// Convert a able to a list
/// </Summary>
/// <Typeparam name = "T"> Object Type </typeparam>
/// <Param name = "dt"> DataTable to be converted </param>
/// <Returns> </returns>
Public List <T> DataTableToEntityList <T> (DataTable dt)
{
List <T> entiyList = new List <T> ();
Type entityType = typeof (T );
PropertyInfo [] entityProperties = entityType. GetProperties ();
Foreach (DataRow row in dt. Rows)
{
T entity = Activator. CreateInstance <T> ();
Foreach (PropertyInfo propInfo in entityProperties)
{
If (dt. Columns. Contains (propInfo. Name ))
{
If (! Row. IsNull (propInfo. Name ))
{
PropInfo. SetValue (entity, row [propInfo. Name], null );
}
}
}
EntiyList. Add (entity );
}
Return entiyList;
}
}
}
PageService. ashx. cs General handler code:
Copy codeThe Code is as follows:
Using System;
Using System. Collections;
Using System. Data;
Using System. Linq;
Using System. Web;
Using System. Web. Services;
Using System. Web. Services. Protocols;
Using System. Xml. Linq;
Using System. Data. SqlClient;
Using DAL;
Using System. Web. Extensions;
Using System. Web. Script. Serialization;
Using Model;
Using System. Web. UI. MobileControls;
Using System. Collections. Generic;
Namespace LandingSystem
{
/// <Summary>
/// $ Codebehindclassname $ abstract description
/// </Summary>
[WebService (Namespace = "http://tempuri.org/")]
[WebServiceBinding (ConformsTo = WsiProfiles. BasicProfile1_1)]
Public class PageService: IHttpHandler
{
Public void ProcessRequest (HttpContext context)
{
Context. Response. ContentType = "text/plain ";
String action = context. Request ["action"];
If (action = "GetPageCount ")
{
Int counts = new UserManageClass (). GetPageCount ();
Int page = counts/3;
If (counts % 3! = 0)
{
Page ++;
}
Context. Response. Write (page );
}
Else if (action = "GetPageData ")
{
Int pageNo = Convert. ToInt32 (context. Request ["PageNo"]);
String SatrPage = (pageNo-1) * 3 + 1). ToString ();
String EndPage = (pageNo * 3). ToString ();
DataTable dt = new UserManageClass (). GetPageDate (SatrPage, EndPage );
IList <RegisterModel> data = ModelConvertHelper <RegisterModel>. ConvertToModel (dt );
// IList <RegisterModel> data = new UserManageClass (). DataTableToEntityList <RegisterModel> (dt );
Var p1 = data. Select (c => new {c. Name, c. Phone });
# Region Waste Code
// Var p1 = data. Select (c => new {c. Name, c. Phone });
// Var p1 = data. Select (dr => new {dr ["Name"]. ToString (), dr ["Phone"]. ToString ()});
// Var T_model = new List <RegisterModel> ();
// Var p3 = T_model.Select (c => new {c. Name, c. Phone });
// Var p2 = data. Select (c => new {})
# Endregion
JavaScriptSerializer jss = new JavaScriptSerializer ();
Context. Response. Write (jss. Serialize (p1 ));
}
}
Public bool IsReusable
{
Get
{
Return false;
}
}
}
}
Aspx page code:
Copy codeThe Code is as follows:
<Head runat = "server">
<Title> No title page </title>
<Script src = "JS/jquery-latest.js" type = "text/javascript"> </script>
<Script type = "text/javascript">
$ (Function (){
//-----------------------------------------------------------
Function getPageData (pageNo) {// method for obtaining a certain page of data
$. Post ("PageService. ashx", {"action": "GetPageData", "PageNo": pageNo}, function (data, status ){
If (status = "success "){
$ ("# Comment"). empty ();
Var comments = $. parseJSON (data); // deserialize json data.
For (var I = 0; I <comments. length; I ++ ){
Var row = comments [I];
Var li = $ ("<li>" + row. Name + ":" + row. Phone + "</li> ");
$ ("# Comment"). append (li); // each time a piece of data is retrieved, A li is created and appended to the Comment/ul.
}
}
});
}
//-------------------------------------------------------------------
GetPageData (1); // enter the page for the first time. The data on the first page is displayed.
//----------------------------------------------------------------/
// Retrieve all pages and initialize the pagination button
$. Post ("PageService. ashx", {"action": "GetPageCount"}, function (data, status ){
If (status = "success "){
Var tr1 = $ ("<tr> </tr> ");
Var pageNo = parseInt (data );
For (var I = 1; I <= pageNo; I ++ ){
Var td = $ ("<td> <a href =''> "+ I +" </a> </td> ");
Tr1.append (td );
}
$ ("# PageNo"). append (tr1 );
$ ("# PageNo a"). click (function (e) {// After the page number is created, a click event is monitored for each page number.
E. preventDefault (); // cancel the default redirect action of.
Getpagedata(metadata (this).html (); // click it to retrieve the page data.
});
}
});
//----------------------------------------------------------------------------
});
</Script>
</Head>
<Body>
<Table>
<Tr>
<Td>
<Ul id = "Comment"> </ul>
</Td>
</Tr>
</Table>
<Br/>
Page number:
<Table id = "pageNo"> </table>
</Body>
</Html>
ModelConvertHelper. cs (converts a able to a list generic class) code:
Copy codeThe Code is as follows:
Using System;
Using System. Collections. Generic;
Using System. Linq;
Using System. Text;
Using System. Collections;
Using System. Data;
Using System. Reflection;
Namespace DAL
{
Public class ModelConvertHelper <T> where T: new ()
{
Public static IList <T> ConvertToModel (DataTable dt)
{
IList <T> ts = new List <T> ();
Type type = typeof (T );
String tempName = "";
Foreach (DataRow dr in dt. Rows)
{
T t = new T ();
// Obtain the public attributes of this model
PropertyInfo [] propertys = t. GetType (). GetProperties ();
Foreach (PropertyInfo pi in propertys)
{
TempName = pi. Name;
// Check whether the DataTable contains this column
If (dt. Columns. Contains (tempName ))
{
// Determine whether the property has a Setter
If (! Pi. CanRead) continue;
Object value = dr [tempName];
If (value! = DBNull. Value)
If (pi. PropertyType = typeof (int ))
{
Pi. SetValue (t, Convert. ToInt32 (value), null );
}
Else if (pi. PropertyType = typeof (string ))
{
Pi. SetValue (t, value. ToString (), null );
}
// Pi. SetValue (t, value, null );
}
}
Ts. Add (t );
}
Return ts;
}
}
}
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