1     protected override void InitializePager(GridViewRow row, int columnSpan, PagedDataSource pagedDataSource)
  2         {
  3             if (PagerType == ThisPagerType.Regular)
  4             {
  5                 // if PagerType is not DropDownList
  6                 // render the regular GridView Pager
  7                  base.InitializePager(row, columnSpan, pagedDataSource);
  8             }
  9             else
 10             {
 11                 TableCell cell_1;
 12                 // if we are going to use dropdownlist
 13                 if (PagerType == ThisPagerType.DropDownList)
 14                 {
 15                     // our Pager with DropDownList control
 16 
 17                     // create our DropDownList control
 18                     var ddl = new DropDownList();
 19                     // populate it with the number of Pages of our GridView
 20                     for (int i = 0; i < PageCount; i++)
 21                     {
 22                         ddl.Items.Add(new ListItem(Convert.ToString(i + 1), i.ToString()));
 23                     }
 24                     ddl.AutoPostBack = true;
 25                     // assign an Event Handler when its Selected Index Changed
 26                     ddl.SelectedIndexChanged += new EventHandler(ddl_SelectedIndexChanged);
 27                     // synchronize its selected index to GridView's current PageIndex
 28                     ddl.SelectedIndex = PageIndex;
 29 
 30                     // add our first TableCell which will contain the DropDownList 
 31                     cell_1 = new TableCell();
 32 
 33                     // we just add a Label with 'Page ' Text
 34                     cell_1.Controls.Add(PageOf());
 35 
 36                     // our DropDownList control here.
 37                     cell_1.Controls.Add(ddl);
 38 
 39                     // and our Total number of Pages
 40                     cell_1.Controls.Add(PageTotal());
 41                 }
 42                 else
 43                 {
 44                     // if we are going to use the FirstPrevNextLast buttons.
 45                     LinkButton first = new LinkButton();
 46                     first.Text = "首页 ";
 47                     // first button will always have a value of zero (0)
 48                     first.CommandArgument = "0";
 49                     first.Enabled = PageIndex > 0;
 50                     // add click event handler 
 51                     first.Click += new EventHandler(navigate_Click);
 52 
 53                     LinkButton prev = new LinkButton();
 54                     prev.Text = "上一页 ";
 55                     // set Prev button argument's to current PageIndex minus 1 
 56                     prev.CommandArgument = string.Format("{0}", (PageIndex - 1));
 57                     prev.Enabled = (PageIndex > 0);
 58                     prev.Click += new EventHandler(navigate_Click);
 59 
 60                     LinkButton next = new LinkButton();
 61                     next.Text = "下一页";
 62                     // set Next button argument's to current PageIndex plus 1
 63                     next.CommandArgument = string.Format("{0}", (PageIndex + 1));
 64                     next.Enabled = (PageIndex < (PageCount - 1));
 65                     next.Click += new EventHandler(navigate_Click);
 66 
 67                     LinkButton last = new LinkButton();
 68                     last.Text = "尾页";
 69                     // Last button will always have a value equal to PageCount minus 1
 70                     last.CommandArgument = string.Format("{0}", (PageCount - 1));
 71                     last.Enabled = (PageIndex < (PageCount - 1));
 72                     last.Click += new EventHandler(navigate_Click);
 73 
 74 
 75                     TextBox navTb = new TextBox();
 76                     navTb.Width = 30;
 77                       78 
 79                     LinkButton navLink = new LinkButton();
 80                     navLink.Text = "跳转到";
 81                     // Last button will always have a value equal to PageCount minus 1
 82                     navLink.CommandArgument = navTb.Text.Equals("")?"0":navTb.Text;
 83                     // navLink.Enabled = (PageIndex < (PageCount - 1));
 84                     navLink.Click += new EventHandler(navigate_Click);
 85 
 86 
 87                     cell_1 = new TableCell();
 88 
 89                     // add the First button to cell controls collection
 90                     cell_1.Controls.Add(first);
 91                     // add the Prev button
 92                     cell_1.Controls.Add(prev);
 93                     // add the Next button
 94                     cell_1.Controls.Add(next);
 95                     // add the Last button 
 96                     cell_1.Controls.Add(last);
 97 
 98                    
 99                     cell_1.Controls.Add(navTb);
100                     cell_1.Controls.Add(navLink);
101                 }
102 
103                 // create a Table that will replace entirely our GridView's Pager section            
104                 Table tbl = new Table();
105                 tbl.BorderWidth = 0;
106                 tbl.Width = Unit.Percentage(100);
107                 // add one TableRow to our Table
108                 tbl.Rows.Add(new TableRow());
109                 
110                 // the 2nd TableCell will display the Record number you are currently in.
111                 TableCell cell_2 = new TableCell();
112                 cell_2.Controls.Add(PageInfo(pagedDataSource.DataSourceCount));
113 
114                 // add now the 2 cell to our created row
115                 tbl.Rows[0].Cells.Add(cell_1);
116                 tbl.Rows[0].Cells.Add(cell_2);
117                 tbl.Rows[0].Cells[0].HorizontalAlign = HorizontalAlign.Left;
118                 tbl.Rows[0].Cells[1].HorizontalAlign = HorizontalAlign.Right;
119 
120                 // in Pager's Row of our GridView add a TableCell                 
121                 row.Controls.AddAt(0, new TableCell());
122                 // sets it span to GridView's number of columns
123                 row.Cells[0].ColumnSpan = Columns.Count;
124                 // finally add our created Table
125                 row.Cells[0].Controls.AddAt(0, tbl);
126 
127             }
128         }