Asp. NET tip: The GridView control custom pagination Detailed

Asp.net| Page | tips | control |

I wrote a few days ago about << implement pagination >> and <<gridview control events in stored procedures >>, then some people asked me how to apply this in the GridView! It's really simple, The main is how to save the page page pageindex problem, but to solve what is good to do. Because in the paging process: pagesize is certain, we can use a property to represent. Save PageIndex Many methods, and the data is not very large, Basically not good too much resources. Or an old saying, no more than an example of intuitive.

Here we'll use a hidden field to save this pageindex, the current page number. When you click on the previous page, you subtract its value by one, and you know it's 0, and note that the first page number is 0 instead of 1 here. Look at the code, and then we analyze the analysis!
1<asp:gridview id= "Newsgrid" runat= "Server" autogeneratecolumns= "false" allowpaging= "false" Width= "100%" >
2 <Columns>
3 <asp:boundfield datafield= "NewsId" headertext= "News id"/>
4 <asp:hyperlinkfield datanavigateurlfields= "NewsId" datanavigateurlformatstring= "~/details.aspx?id={0}"
5 datatextfield= "title" headertext= "News title" itemstyle-width= "70%"/>
6 <asp:boundfield datafield= "Posttime" headertext= "Release Time"/>
7 <asp:commandfield headertext= "News management" showcancelbutton= "False" showdeletebutton= "True"
8 showeditbutton= "True"/>
9 </Columns>
Ten </asp:GridView>
One <div style= "HEIGHT:16PX; padding-top:5px; margin-right:30px; Float:right ">
<asp:hiddenfield id= "currentpage" runat= "server" value= "0"/>
<asp:linkbutton id= "First" runat= "Server" commandargument= "frist" > Home </asp:LinkButton>
<asp:linkbutton id= "Prev" runat= "Server" commandargument= "Prev" > Prev </asp:LinkButton>
<asp:linkbutton id= "Next" runat= "Server" commandargument= "Next" > next page </asp:LinkButton>
<asp:linkbutton id= "Last" runat= "Server" commandargument= "final" > End </asp:LinkButton>
</div> CS File Code:
1 protected void Pagerbutton_click (object sender, EventArgs e)
2 {
3 int pageindx = Convert.ToInt32 (Currentpage.value);
4 int totals = newsmanager.getnews (0, PageSize). totalrecords;
5 int pages = (totals% pageSize) = = 0? (totals/pagesize): (totals/pagesize + 1);
6 String arg = ((LinkButton) sender). Commandargument.tostring (). ToLower ();
7 Switch (ARG)
8 {
9 Case "Prev":
Ten if (Pageindx > 0)
11 {
Pageindx-= 1;
13}
break;
Case "Next":
if (Pageindx < pages-1)
17 {
Pageindx + 1;
19}
break;
Case "Last":
Pageindx = pages-1;
break;
Default:
pageindx = 0;
-Break;
27}
Currentpage.value = Pageindx.tostring ();
Newsgrid.datasource = Newsmanager.getnews (Pageindx, pageSize). entities;
Newsgrid.databind ();
31}

is not very simple ah, read the code are understood, about using the button to pass the parameters here, there is not much to say, there is a entities attribute, in the << application entity class EntitySet implement similar paradigm function >> this article can find