Flex 2 DataGrid page

<? XML version = "1.0" encoding = "UTF-8"?>
<Mx: Application xmlns: MX = "http://www.adobe.com/2006/mxml" xmlns = "*" layout = "absolute" creationcomplete = "initapp ()">
<Mx: SCRIPT>
<! [CDATA [
Public var pagerecordes: uint = 8;
Public var totalpages: uint = 0;
Public var totalrows: uint = 0;
Public var currentpage: uint = 1;
Public var pagestartrow: uint = 1;
Public var pageendrow: uint = 0;

Public Function initapp (): void {
TXT. Text = "page" + currentpage;
Totalrows = initdg. length;
If (initdg. length> pagerecordes ){
DG. dataprovider = initdg. Slice (0, pagerecordes );
Ppage. Enabled = false;
}

If (totalrows % pagerecordes) = 0 ){
Totalpages = math. Floor (totalrows/pagerecordes );
} Else {
Totalpages = math. Floor (totalrows/pagerecordes + 1 );
}

If (totalrows <= pagerecordes ){
This. pagestartrow = 1;
This. pageendrow = totalrows;
} Else {
This. pagestartrow = 1;
This. pageendrow = pagerecordes;
}

If (totalpages = 1 ){
Ppage. Enabled = false;
Npage. Enabled = false;
}
}

Public Function showpreviouspage (): void {
Currentpage = currentpage-1;
TXT. Text = "page" + currentpage;
If (currentpage = 1 ){
Ppage. Enabled = false;
Npage. Enabled = true;
} Else {
Ppage. Enabled = true;
Npage. Enabled = true;
}
If (currentpage = totalpages ){
Pagestartrow = (currentpage-1) * pagerecordes + 1;
Pageendrow = totalrows;
} Else {
Pagestartrow = (currentpage-1) * pagerecordes + 1;
Pageendrow = currentpage * pagerecordes;
}
DG. dataprovider = initdg. Slice (pagestartrow-1, pageendrow );
}

Public Function shownextpage (): void {
Currentpage = currentpage + 1;
TXT. Text = "page" + currentpage;
If (currentpage = totalpages ){
Npage. Enabled = false;
Ppage. Enabled = true;
} Else {
Npage. Enabled = true;
Ppage. Enabled = true;
}
If (currentpage = totalpages ){
Pagestartrow = (currentpage-1) * pagerecordes + 1;
Pageendrow = totalrows;
} Else {
Pagestartrow = (currentpage-1) * pagerecordes + 1;
Pageendrow = currentpage * pagerecordes;
}
DG. dataprovider = initdg. Slice (currentpage-1) * pagerecordes, pageendrow );
}

Public Function showfirstpage (): void {
DG. dataprovider = initdg. Slice (0, pagerecordes );
Ppage. Enabled = false;
Npage. Enabled = true;
TXT. Text = "page" + 1;
Currentpage = 1;
}

Public Function showlastpage (): void {
DG. dataprovider = initdg. Slice (totalpages-1) * pagerecordes, totalrows );
Ppage. Enabled = true;
Npage. Enabled = false;
TXT. Text = "page" + totalpages;
Currentpage = totalpages;
}
]>
</MX: SCRIPT>
<Mx: panel title = "DataGrid panel" Height = "287" width = "500">
<Mx: DataGrid id = "DG" Height = "100%" width = "100%">
<Mx: dataprovider>
<Mx: array id = "initdg">
<Mx: Object player = "Rafer Alston" Pos = "G" from = "Fresno State"/>
<Mx: Object player = "Luther head" Pos = "G" from = "lllinois"/>
<Mx: Object player = "Tracy McGrady" Pos = "F-G" from = "Mount Zion Christian Acad. Hs (NC)"/>
<Mx: Object player = "Dikembe Mutombo" Pos = "C" from = "Georgetown"/>
<Mx: Object player = "stromile Swift" Pos = "F" from = "louisiana state"/>
<Mx: Object player = "David Wesley" Pos = "G" from = "baylor"/>
<Mx: Object player = "Yao Ming" Pos = "C" from = "China"/>
<Mx: Object player = "Kobe Bryant" Pos = "G" from = "Lower Merion HS (PA)"/>
<Mx: Object player = "Kwame Brown" Pos = "F-C" from = "Glynn Academy HS (GA)"/>
<Mx: Object player = "Lamar Odom" Pos = "F" from = "Fig Island"/>
<Mx: Object player = "Andrew Bynum" Pos = "C" from = "st. Joseph HS (NJ)"/>
<Mx: Object player = "Brian Cook" Pos = "F" from = "Illinois"/>
<Mx: Object player = "Devean George" Pos = "F" from = "Augsburg"/>
<Mx: Object player = "Devin green" Pos = "G" from = "Hampton"/>
<Mx: Object player = "Aaron mckie" Pos = "F" from = "Temple"/>
<Mx: Object player = "Chris Mihm" Pos = "C" from = "Texas"/>
<Mx: Object player = "Smush Parker" Pos = "G" from = "Fordham"/>
<Mx: Object player = "Ronny Turiaf" Pos = "F" from = "Gonzaga"/>
<Mx: Object player = "Sasha Vujacic" Pos = "F" from = "Slovenia"/>
<Mx: Object player = "von wafer" Pos = "F" from = "Florida state"/>
<Mx: Object player = "Luke Walton" Pos = "F" from = "Arizona"/>
<Mx: Object player = "Lamar Odom" Pos = "F" from = "Fig Island"/>
<Mx: Object player = "Jim Jackson" Pos = "F-G" from = "Ohio State"/>
</MX: array>
</MX: dataprovider>
</MX: DataGrid>
<Mx: Spacer/>
<Mx: hbox width = "391">
<Mx: Spacer/>
<Mx: linkbar borderstyle = "solid" color = "#000000" backgroundcolor = "# ccffff" id = "fpage" label = "firstpage" itemclick = "showfirstpage ()">
<Mx: dataprovider>
<Mx: array>
<Mx: String> firstpage </MX: String>
</MX: array>
</MX: dataprovider>
</MX: linkbar>
<Mx: linkbar borderstyle = "solid" color = "#000000" backgroundcolor = "# ccffff" id = "ppage" label = "prevpage" itemclick = "showpreviouspage ()">
<Mx: dataprovider>
<Mx: array>
<Mx: String> prepage </MX: String>
</MX: array>
</MX: dataprovider>
</MX: linkbar>
<Mx: Text id = "TXT" width = "52"/>
<Mx: linkbar borderstyle = "solid" color = "#000000" backgroundcolor = "# ccffff" id = "npage" label = "nextpage" itemclick = "shownextpage ()">
<Mx: dataprovider>
<Mx: array>
<Mx: String> nextpage </MX: String>
</MX: array>
</MX: dataprovider>
</MX: linkbar>
<Mx: linkbar borderstyle = "solid" color = "#000000" backgroundcolor = "# ccffff" id = "lpage" label = "lastpage" itemclick = "showlastpage ()">
<Mx: dataprovider>
<Mx: array>
<Mx: String> lastpage </MX: String>
</MX: array>
</MX: dataprovider>
</MX: linkbar>
</MX: hbox>
<Mx: Spacer/>
</MX: Panel>
</MX: Application>

This article from: http://www.360doc.com/showweb/0/0/468460.aspx