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Datalist control paging operation!

Source: Internet
Author: User
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Aspx source file

<% @ Page Language = "C #" codebehind = "radionj_list.aspx.cs" autoeventwireup = "false" inherits = "Radio. Radio. radionj_list" %>
<! Doctype HTML public "-// W3C // dtd html 4.0 transitional // en">
<HTML>
<Head>
<Title> NJ list </title>
<Meta name = "generator" content = "Microsoft Visual Studio. NET 7.1">
<Meta name = "code_language" content = "C #">
<Meta name = "vs_defaultclientscript" content = "JavaScript">
<Meta name = "vs_targetschema" content = "http://schemas.microsoft.com/intellisense/ie5">
<Link href = "admin/style/item.css" type = "text/CSS" rel = "stylesheet">
<Style>
. Normal
{
Font-weight: normal
}
. Bigsize
{
Font-weight: bold;
}

<! -- Asthlon published in 05 3-25 -->
</Style>

</Head>
<Body ms_positioning = "gridlayout"> <! -- <Table border = "0" cellspacing = "0" cellpadding = "0">

</Table> -->
<Form ID = "form1" method = "Post" runat = "server">
<Div align = "center">
<Asp: datalist id = "info_data" runat = "server" showfooter = "false" gridlines = "both" bordercolor = "control"
Repeatcolumns = "2" repeatdirection = "horizontal" horizontalalign = "center" showheader = "false"
Cellpadding = "5" borderwidth = "0px" repeatlayout = "flow">
<Itemstyle horizontalalign = "center" Height = "120px" width = "140px" verticalalign = "Middle"> </itemstyle>
<Itemtemplate>
<Table cellspacing = "0" cellpadding = "0">
<Tr>
<TD> </TD>
<TD valign = "Middle" bgcolor = "# fecc00" align = "center"> <a href = '<% # databinder. eval (container. dataitem, "ID", "radio_nj_info.aspx? Id = {0} ") %> '>
<Div style = "overflow: hidden; width: 90px; Height: 90px;"> '> </div>
</A>
</TD>
<TD> </TD>
</Tr>
</Table>
</Itemtemplate>
</ASP: datalist>
<Div style = "padding-left: 40px"> <font color = "#000000"> total
<Asp: Label id = "list_num" runat = "server"> </ASP: Label> records </font>
<Asp: Label id = "list_at" runat = "server"> </ASP: Label> <font color = "#000000"> & nbsp; </font> <asp: linkbutton id = "P0" runat = "server" commandname = "P0"> <font face = "webdings"> 9 </font> </ASP: linkbutton>
<Asp: linkbutton id = "p1" runat = "server" commandname = "p1">
<Font face = "webdings"> 7 </font> </ASP: linkbutton>
[<Asp: placeholder id = "p_pagelist" runat = "server"> </ASP: placeholder>]
<Asp: linkbutton id = "p2" runat = "server" commandname = "p2">
<Font face = "webdings"> 8 </font> </ASP: linkbutton>
<Asp: linkbutton id = "P3" runat = "server" commandname = "P3">
<Font face = "webdings" >:</font> </ASP: linkbutton>
<! --
& Nbsp; <asp: textbox id = "attxt" onkeyup = "this. value = This. value. replace (// D/g, '')" runat = "server" width = "35px"
Onafterpaste = "this. value = This. value. replace (// D/g, '')"> </ASP: textbox> <asp: button id = "go_to" runat = "server" text = "go"> </ASP: button>
-->
</Div>
</Div>
</Form>
</Body>
</Html>

. Cs source file

Using system;
Using system. collections;
Using system. componentmodel;
Using system. Data;
Using system. Data. sqlclient;
Using system. drawing;
Using system. Web;
Using system. Web. sessionstate;
Using system. Web. UI;
Using system. Web. UI. webcontrols;
Using system. Web. UI. htmlcontrols;

Namespace Radio. Radio
{
/// <Summary>
/// Asthlon is published in 05 3-25.
/// </Summary>
Public class radionj_list: system. Web. UI. Page
{
Protected system. Web. UI. webcontrols. datalist info_data;
Protected system. Web. UI. webcontrols. Label list_num;
Protected system. Web. UI. webcontrols. Label list_at;
Protected system. Web. UI. webcontrols. linkbutton P0;
Protected system. Web. UI. webcontrols. linkbutton P1;
Protected system. Web. UI. webcontrols. linkbutton P2;
Protected system. Web. UI. webcontrols. placeholder p_pagelist;
Protected system. Web. UI. webcontrols. linkbutton P3;
 
Private void page_load (Object sender, system. eventargs E)
{
If (! Ispostback)
{
Webuse. sqlec. Database ditem = new webuse. sqlec. Database ();
String SQL = "select count (ID) from radio_dj ";
Viewstate ["curpage"] = 0;
Viewstate ["pcount"] = ditem. strsql_txtsql (SQL );
Bind_list ();
Post_control ();
}
Else
{
Post_control ();
}
// Place user code here to initialize the page
}
Private void bind_list ()
{
Int psize = 10;
Int sindex, Len,;
Float F;
Webuse. sqlec. Database ditem = new webuse. sqlec. Database ();
Len = convert. toint32 (math. Ceiling (convert. toint32 (viewstate ["pcount"])/psize); // + 1
F = convert. tosingle (viewstate ["pcount"])/psize;
If (F> convert. toint32 (convert. toint32 (viewstate ["pcount"])/psize ))
{
Len = Len + 1;
}

Sindex = convert. toint32 (viewstate ["curpage"]) * psize;
Sqldataadapter ADP = new system. Data. sqlclient. sqldataadapter ();
Dataset DS = new dataset ();
ADP = ditem. read_adapter_noarg ("radio_dj_sel"); // ditem. read_adapter_txtsql (SQL );
ADP. Fill (DS, sindex, psize, "show ");
Info_data.datasource = Ds;
Info_data.databind ();

At = convert. toint32 (viewstate ["curpage"]);
If (at <= 0)
{
Required enabled = false;
P1.enabled = false;
}
Else
{
P1.enabled = true;
Required enabled = true;
}
If (at> = len-1)
{
P2.enabled = false;
P3.enabled = false;
}
Else
{
P2.enabled = true;
P3.enabled = true;
}
List_num.text = convert. tostring (viewstate ["pcount"]);
List_at.text = convert. tostring (sindex/psize + 1) + "/" + Len. tostring ();
Clear_linkbutton_style ();
}
Private void go_page (Object sender, system. Web. UI. webcontrols. commandeventargs E)
{
String CommonName;
Int sindex = convert. toint32 (viewstate ["curpage"]);
Int Len = convert. toint32 (math. Ceiling (convert. toint32 (viewstate ["pcount"])/10 ));
CommonName = E. commandname;
Switch (partition name)
{
Case "P0 ":
Sindex = 0;
Break;
Case "p1 ":
Sindex-= 1;
Break;
Case "p2 ":
Sindex + = 1;
Break;
Case "P3 ":
Sindex = Len;
Break;
}
Viewstate ["curpage"] = sindex;
Bind_list ();
}

Private void post_control ()
{
Int I;
Int Len = convert. toint32 (math. Ceiling (convert. toint32 (viewstate ["pcount"])/10 ));
Float F = convert. tosingle (viewstate ["pcount"])/10;
If (F> convert. toint32 (convert. toint32 (viewstate ["pcount"])/10 ))
{
Len = Len + 1;
}
This. p_pagelist.controls.clear ();
String S = "";
// Int curpage = convert. toint32 (viewstate ["curpage"]);
For (I = 1; I <= Len; I ++)
{
System. Web. UI. webcontrols. linkbutton lkbtn = new linkbutton ();
S = "" + I. tostring () + "";
Lkbtn. Text = s;
Lkbtn. commandargument = I. tostring ();
This. p_pagelist.controls.add (lkbtn );
Lkbtn. Command + = new commandeventhandler (lkbtn_command );
}
}
Private void clear_linkbutton_style ()
{
Int curpage = convert. toint32 (viewstate ["curpage"]) + 1;
Foreach (control ictrl in this. p_pagelist.controls)
{
If (ictrl. GetType (). tostring (). toupper (). indexof ("linkbutton")> 0)
{
Linkbutton ilkbtn = (linkbutton) ictrl;
If (ilkbtn. commandargument. tostring () = curpage. tostring ())
{
Ilkbtn. cssclass = "bigsize ";
}
Else
{
Ilkbtn. cssclass = "normal ";
}
}
}
}
Private void lkbtn_command (Object sender, system. Web. UI. webcontrols. commandeventargs E)
{
Int GOS, sindex;
Int Len = convert. toint32 (math. Ceiling (convert. toint32 (viewstate ["pcount"])/10 ));
If (E. commandargument = NULL)
{
Return;
}
Sindex = 0;
GOS = convert. toint32 (E. commandargument );
// Clear_linkbutton_style ();
// Linkbutton lkbtn = (linkbutton) sender ;//
// Lkbtn. cssclass = "bigsize ";
If (GOS <= 0)
{
Sindex = 0;
}
Else
{
If (GOS> = Len + 1)
{
Sindex = Len;
}
Else
{
Sindex = gos-1;
}

}
Viewstate ["curpage"] = sindex;
Bind_list ();
}
/**
Private void go_to_click (Object sender, system. eventargs E)
{
Int GOS, sindex;
Int Len = convert. toint32 (math. Ceiling (convert. toint32 (viewstate ["pcount"])/9 ));
If (attxt. Text = "")
{
Return;
}
Sindex = 0;
GOS = convert. toint32 (attxt. Text );
If (GOS <= 0)
{
Sindex = 0;
}
Else
{
If (GOS> = Len + 1)
{
Sindex = Len;
}
Else
{
Sindex = gos-1;
}

}
Viewstate ["curpage"] = sindex;
Bind_list ();
}
**/
/// <Summary>
/// Obtain NJ Entertainment Information
/// </Summary>
/// <Param name = "T"> </param>
/// <Param name = "I"> </param>
/// <Returns> </returns>
Public String return_nj_detail (string T, int I)
{
String rstr = NULL;
String [] istr = T. Split (',');
Rstr = istr [I];
Return rstr;

}

# Code generated by region web Form Designer
Override protected void oninit (eventargs E)
{
//
// Codegen: This call is required by the ASP. NET web form designer.
//
Initializecomponent ();
Base. oninit (E );
}

/// <Summary>
/// The designer supports the required methods-do not use the code editor to modify
/// Content of this method.
/// </Summary>
Private void initializecomponent ()
{
This. Configure command + = new system. Web. UI. webcontrols. commandeventhandler (this. go_page );
This. p1.command + = new system. Web. UI. webcontrols. commandeventhandler (this. go_page );
This. p2.command + = new system. Web. UI. webcontrols. commandeventhandler (this. go_page );
This. p3.command + = new system. Web. UI. webcontrols. commandeventhandler (this. go_page );
This. Load + = new system. eventhandler (this. page_load );

}
# Endregion
}
}

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

Related Keywords:
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