GridView自定义分页

 

在 ASP.NET 2.0 种提供了 GridView 控件。该控件的分页比较方便，可以通过在 Visual Studio .NET 2005 种简单设置即可实现各种分页功能。

1.  默认分页方式
(1)  是否允许分页
GridView 的 AllowPaging 属性。

(2)  每页记录数
GridView 的 PageSize

(3)  分页导航条形式
GridView 的 PagerSettings 属性的 Mode ： Numeric ， NextPrevious ， NextPreviousFirstLast ， NumericFirstLast 。

2.  自定义分页
( 1)  当前页

< asp:Label   ID ="LabelCurrentPage"  runat ="server"  
 Text ="<%# ((GridView)Container.NamingContainer).PageIndex + 1 %>"></ asp:Label > 

(2)  总页数

< asp:Label  ID ="LabelPageCount"  runat ="server"  
 Text ="<%# ((GridView)Container.NamingContainer).PageCount %>"></ asp:Label > 

(3)  首页、上一页、下一页、尾页

< asp:LinkButton  ID ="LinkButtonFirstPage"  runat ="server"  CommandArgument ="First"  CommandName ="Page"  
 Visible ="<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>"> 首页 </ asp:LinkButton >  

< asp:LinkButton  ID ="LinkButtonPreviousPage"  runat ="server"  CommandArgument ="Prev"  CommandName ="Page"  
 Visible ="<%# ((GridView)Container.NamingContainer).PageIndex != 0 %>"> 上一页 </ asp:LinkButton >  

< asp:LinkButton  ID ="LinkButtonNextPage"  runat ="server"  CommandArgument ="Next"  CommandName ="Page"  
 Visible ="<%# ((GridView)Container.NamingContainer).PageIndex != ((GridView)Container.NamingContainer).PageCount - 1 %>"> 下一页 </ asp:LinkButton >  

< asp:LinkButton  ID ="LinkButtonLastPage"  runat ="server"  CommandArgument ="Last"  CommandName ="Page"  
 Visible ="<%# ((GridView)Container.NamingContainer).PageIndex != ((GridView)Container.NamingContainer).PageCount - 1 %>"> 尾页 </ asp:LinkButton > 

<asp:textbox id="txtNewPageIndex" runat="server" width="20px" text='<%# ((GridView)Container.Parent.Parent).PageIndex + 1 %>' />
<asp:linkbutton id="btnGo" runat="server" causesvalidation="False" commandargument="-1" commandname="Page" text="GO" />

 

注 : 将上述代码放在 GridView 的 <PagerTemplate></PagerTemplate>

 

PageIndexChanging 事件中加入如下代码

    protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e)

    {

       GridView theGrid = sender as GridView; // refer to the GridView

        int newPageIndex = 0;

        if (-2 == e.NewPageIndex) { // when click the "GO" Button

         TextBox txtNewPageIndex = null;

 //GridViewRow pagerRow = theGrid.Controls[0].Controls[theGrid.Controls[0].Controls.Count - 1] as GridViewRow; // refer to PagerTemplate

GridViewRow pagerRow = theGrid.BottomPagerRow; //GridView 较DataGrid提供了更多的API，获取分页块可以使用BottomPagerRow 或者TopPagerRow，当然还增加了HeaderRow和FooterRow

//updated at 2006 年月日:15:33

            if (null != pagerRow) {

                txtNewPageIndex = pagerRow.FindControl("txtNewPageIndex") as TextBox;   // refer to the TextBox with the NewPageIndex value

            }

            if (null != txtNewPageIndex) {

                newPageIndex = int.Parse(txtNewPageIndex.Text) - 1; // get the NewPageIndex

            }

        }

        else { // when click the first, last, previous and next Button

            newPageIndex = e.NewPageIndex;

        }

        // check to prevent form the NewPageIndex out of the range

        newPageIndex = newPageIndex < 0 ? 0 : newPageIndex;

        newPageIndex = newPageIndex >= theGrid.PageCount ? theGrid.PageCount - 1 : newPageIndex;

        // specify the NewPageIndex

        theGrid.PageIndex = newPageIndex;

        // rebind the control

        // in this case of retrieving the data using the xxxDataSoucr control,

        // just do nothing, because the asp.net engine binds the data automatically

    }