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為Repeater實現分頁
二、窗體設計：
1、新建ASP.NET Web應用程序，命名為Repeater2，保存路徑為http://192.168.0.1/Repeater2（注：我機子上的網站的IP是192.168.0.1的主目錄是D:/web文件夾）然后點擊確定。
2、向窗體添加一個3行一列的表，向表的第一行中添加一個Repeater控件，向表的第二行中添加兩個Label控件向表的第三行中添加四個Button按鈕。
3、切換到HTML代碼窗口，在＜ASP:Repeater id="Repeater1" runat="server"＞和＜/ASP:Repeater＞之間添加以下代碼：
＜ItemTemplate＞
＜table id="Table2" style="FONT-SIZE: x-small" width="498"＞
＜tr＞
＜td＞＜%#DataBinder.Eval(Container,"DataItem.employeeid")%＞＜/td＞
＜td＞＜%#DataBinder.Eval(Container,"DataItem.lastname")%＞＜/td＞
＜/tr＞
＜/table＞
＜/ItemTemplate＞
三、代碼設計：
Imports System.Data.SqlClient
Public Class WebForm1
Inherits System.Web.UI.Page
Dim scon As New SqlConnection("server=localhost;database=northwind;uid=sa;pwd=123")
Dim sDA As SqlDataAdapter
Dim ds As DataSet
Dim currentPage As Integer '記錄著目前在哪一頁上
Dim maxPage As Integer '總共有多少頁
Const rowCount As Integer = 3 '一頁有多少行
Dim rowSum As Integer '總共有多少行
'窗體代碼省略
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Not Page.IsPostBack Then
sDA = New SqlDataAdapter("select employeeid, lastname from employees order by employeeid", scon)
ds = New DataSet
Try
sDA.Fill(ds, "employees")
'獲取總共有多少行
rowSum = ds.Tables(0).Rows.Count
Catch ex As Exception
rowSum = 0
End Try
'如果沒有數據，退出過程
If rowSum = 0 Then Exit Sub
'計算出瀏覽數據的總頁數
If rowSum Mod rowCount ＞ 0 Then
'有余數要加1
maxPage = rowSum / rowCount + 1
Else
'正好除盡
maxPage = rowSum / rowCount
End If
currentPage = 1
'調用綁定數據過程
readpage(currentPage)
BindData()
Label2.Text = maxPage
'首頁和按鈕不可見
Button1.Visible = False
Button2.Visible = False
End If
End Sub
'創建一個綁定數據的過程
Sub BindData()
Repeater1.DataSource = ds
Repeater1.DataBind()
Label1.Text = currentPage
End Sub
'創建一個填充數據集的過程
Sub readpage(ByVal n As Integer)
sDA = New SqlDataAdapter("select employeeid, lastname from employees order by employeeid", scon)
ds = New DataSet
ds.Clear()
sDA.Fill(ds, (n - 1) * rowCount, rowCount, "employees")
End Sub
'首頁按鈕
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
currentPage = 1
'調用填充數據集過程
readpage(currentPage)
'綁定數據
BindData()
'設置首頁、第一頁按鈕不可見，顯示尾頁按鈕
Button1.Visible = False
Button2.Visible = False
Button3.Visible = True
Button4.Visible = True
End Sub
'按鈕
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
'如果現在頁是第二頁，設置首頁和按鈕不可見
If Label1.Text ＞ 2 Then
Button3.Visible = True
Button4.Visible = True
Else
Button1.Visible = False
Button2.Visible = False
Button3.Visible = True
Button4.Visible = True
End If
currentPage = Label1.Text - 1
readpage(currentPage)
BindData()
End Sub
'按鈕
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
'如果現在頁倒數第二頁，設置最后頁和按鈕不可見
If Label1.Text ＜ Label2.Text - 1 Then
Button1.Visible = True
Button2.Visible = True
Else
Button1.Visible = True
Button2.Visible = True
Button3.Visible = False
Button4.Visible = False
End If
currentPage = Label1.Text + 1
readpage(currentPage)
BindData()
End Sub
'尾頁按鈕
Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
'設置當前頁為最大頁數
currentPage = Label2.Text
readpage(currentPage)
BindData()
Button1.Visible = True
Button2.Visible = True
Button3.Visible = False
Button4.Visible = False
End Sub
End Class
窗體界面如下所示：
AspNet技術：ASP.NET程序中用Repeater實現分頁，轉載需保留來源！
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