<form id="Form1" method="post" runat="server">
<asp:datagrid id="dgOrder" runat="server" Height="515px" Width="718px" AutoGenerateColumns="False" AllowSorting="True" CellPadding="4" BorderWidth="1px" BorderColor="#A0ABEB" PageSize="15" BorderStyle="Solid" BackColor="White" GridLines="Vertical" ForeColor="Black" AllowPaging="True" ShowFooter="True">
<SelectedItemStyle ForeColor="White" BackColor="Black"></SelectedItemStyle>
<AlternatingItemStyle BackColor="#EEEEEE"></AlternatingItemStyle>
<HeaderStyle HorizontalAlign="Center" ForeColor="White" BorderColor="#6876C5" BackColor="#6876C5"></HeaderStyle>
<FooterStyle ForeColor="White" BackColor="#6876C5"></FooterStyle>
<Columns>
<asp:TemplateColumn>
<ItemTemplate>
<FONT face="宋體">
<asp:CheckBox id="Cb" runat="server"></asp:CheckBox></FONT>
</ItemTemplate>
</asp:TemplateColumn>
<asp:BoundColumn DataField="orderid" SortExpression="orderid" HeaderText="ID">
<HeaderStyle Width="180px"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="ShipCountry" SortExpression="ShipCountry" HeaderText="ShipCountry">
<HeaderStyle Width="180px"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="ShippedDate" SortExpression="ShippedDate" HeaderText="ShippedDate" DataFormatString="{0:d}">
<HeaderStyle Width="180px"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="Freight" SortExpression="Freight" HeaderText="Freight">
<HeaderStyle Width="180px"></HeaderStyle>
</asp:BoundColumn>
<asp:BoundColumn DataField="ShipAddress" SortExpression="ShipAddress" HeaderText="ShipAddress">
<HeaderStyle Width="480px"></HeaderStyle>
</asp:BoundColumn>
</Columns>
<PagerStyle HorizontalAlign="Center" ForeColor="Black" Position="TopAndBottom" BackColor="White" Mode="NumericPages"></PagerStyle>
</asp:datagrid>
</form>
后臺類添加以下代碼：
Imports System.Data.SqlClient
'得到數據視圖，參數為要排序的列
Private Function GetDv(ByVal strSort As String) As DataView
'定義數據庫連接
Dim dv As DataView
Dim CN As New SqlConnection()
Try
'初始化連接字符串
CN.ConnectionString = "data source=pmserver;initial catalog=Northwind;persist security info=False;user id=sa;Password=sa;"
CN.Open()
'從NorthWind得到orders表的數據
Dim adp As SqlDataAdapter = New SqlDataAdapter("select * from orders", CN)
Dim ds As New DataSet()
adp.Fill(ds)
'得到數據視圖
dv = ds.Tables(0).DefaultView
Catch ex As Exception
#If DEBUG Then
Session("Error") = ex.ToString()
Response.Redirect("../error.aspx") '跳轉程序的公共錯誤處理頁面
#End If
Finally
'關閉連接
CN.Close()
End Try
'排序
dv.Sort = strSort
Return dv
End Function
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Not IsPostBack Then
ViewState("strSort") = "orderid"
dgOrder.DataSource = GetDv(ViewState("strSort").ToString())
dgOrder.DataBind()
End If
End Sub
'排序
Private Sub dgOrder_SortCommand(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridSortCommandEventArgs) Handles dgOrder.SortCommand
dgOrder.CurrentPageIndex = 0
'得到排序的列
ViewState("strSort") = e.SortExpression.ToString()
dgOrder.DataSource = GetDv(ViewState("strSort").ToString())
dgOrder.DataBind()
End Sub
'分頁
Private Sub dgOrder_PageIndexChanged(ByVal source As Object, ByVal e As System.Web.UI.WebControls.DataGridPageChangedEventArgs) Handles dgOrder.PageIndexChanged
'得到分頁的頁號
dgOrder.CurrentPageIndex = e.NewPageIndex
dgOrder.DataSource = GetDv(ViewState("strSort").ToString())
dgOrder.DataBind()
End Sub
運行結果如下圖所示：(點擊列標頭可以排序)
為了知道用戶選擇的是哪些記錄，我們可以利用DataGridItem的FindControl得到CheckBox的值，我們來添加一個按鈕，再寫如下代碼：
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim item As DataGridItem
Dim StrScript As String
StrScript = "<script language=javascript>alert('"
'循環表格的項，FindControl
For Each item In Me.dgOrder.Items
If CType(item.FindControl("cb"), System.Web.UI.WebControls.CheckBox).Checked Then
Try
StrScript += item.Cells(1).Text & Space(2)
Catch ex As Exception
End Try
End If
Next
StrScript += "被選擇！')</script>"
RegisterClientScriptBlock("系統消息", StrScript)
End Sub
