asp.net操作datagrid控件的例子，包括添加与更新数据等操作。
代码：
<%@ Page Language=VB Debug=true %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.OLEDB" %>
<script runat=server>
Sub Page_Load(ByVal Sender as Object, ByVal E as EventArgs)
If Not IsPostBack Then
BuildDataList
End If
End Sub
Sub DataList_Edit(sender As Object, e As DataListCommandEventArgs)
dlDepts.EditItemIndex = CInt(e.Item.ItemIndex)
BuildDataList
End Sub
Sub DataList_Update(sender As Object, e As DataListCommandEventArgs)
Dim TheID as String
Dim TheName as String
Dim TheEmail as String
TheID = CType(e.Item.FindControl("lblID"), Label).Text
TheName = CType(e.Item.FindControl("txtName"), TextBox).Text
TheEmail = CType(e.Item.FindControl("txtEmail"), TextBox).Text
Dim DBConn as OleDbConnection
Dim DBUpdate As New OleDbCommand
DBConn = New OleDbConnection( _
"PROVIDER=Microsoft.Jet.OLEDB.4.0;" _
& "DATA SOURCE=" _
& Server.MapPath("EmployeeDatabase.mdb;"))
DBUpdate.CommandText = "Update Employee set " _
& "FirstName = '" & Replace(TheName, "'", "''") & "', " _
& "LastName = '" & Replace(TheEmail, "'", "''") & "' " _
& "Where ID = " & TheID
DBUpdate.Connection = DBConn
DBUpdate.Connection.Open
DBUpdate.ExecuteNonQuery()
DBConn.Close
dlDepts.EditItemIndex = -1
BuildDataList
End Sub
Sub CommandAdd_Click(Sender As Object, E As CommandEventArgs)
Dim DBConn as OleDbConnection
Dim DBAdd As New OleDbCommand
DBConn = New OleDbConnection( _
"PROVIDER=Microsoft.Jet.OLEDB.4.0;" _
& "DATA SOURCE=" _
& Server.MapPath("EmployeeDatabase.mdb;"))
DBAdd.CommandText = "Insert Into Employee (FirstName) " _
& "values ('NewFirstName ')"
DBAdd.Connection = DBConn
DBAdd.Connection.Open
DBAdd.ExecuteNonQuery()
DBConn.Close
dlDepts.EditItemIndex = 0
BuildDataList
End Sub
Sub BuildDataList ()
Dim DBConn as OleDbConnection
Dim DBCommand As OleDbDataAdapter
Dim DSPageData as New DataSet
DBConn = New OleDbConnection( _
"PROVIDER=Microsoft.Jet.OLEDB.4.0;" _
& "DATA SOURCE=" _
& Server.MapPath("EmployeeDatabase.mdb;"))
DBCommand = New OleDbDataAdapter _
("Select ID, FirstName, LastName " _
& "From Employee " _
& "Order By LastName", DBConn)
DBCommand.Fill(DSPageData, _
"Employee")
dlDepts.DataSource = _
DSPageData.Tables("Employee").DefaultView
dlDepts.DataBind()
End Sub
</SCRIPT>
<HTML>
<HEAD>
<TITLE>添加一行数据到datagrid控件-www.jb200.com</TITLE>
</HEAD>
<Body LEFTMARGIN="40">
<form runat="server">
<BR><BR>
<asp:Label
id="lblMessage"
Font-Size="12pt"
Font-Bold="True"
Font-Name="Lucida Console"
text="Below is a list of all employees"
runat="server"
/>
<BR><BR>
<asp:datalist
id="dlDepts"
runat="server"
oneditcommand="DataList_Edit"
onupdatecommand="DataList_Update"
gridlines="Both"
backcolor="lightyellow"
forecolor="darkred"
>
<itemtemplate>
<B>Department: </B>
<asp:label
id="lblID"
runat="server"
text='<%# DataBinder.Eval(Container.DataItem, "ID") %>'
visible="False"
/>
<%# DataBinder.Eval(Container.DataItem, "FirstName") _
& " - " _
& DataBinder.Eval(Container.DataItem, "LastName")
%>
<asp:LinkButton
id="butEdit"
Text="Edit"
CommandName="Edit"
runat="server"
/>
</itemtemplate>
<edititemtemplate>
<asp:label
id="lblID"
runat="server"
text='<%# DataBinder.Eval(Container.DataItem, "ID") %>'
visible="False"
/>
Name:
<asp:textbox
id="txtName"
text='<%# DataBinder.Eval(Container.DataItem, "FirstName") %>'
runat="server"
/>
<BR>
Email:
<asp:textbox
id="txtEmail"
text='<%# DataBinder.Eval(Container.DataItem, "LastName") %>'
runat="server"
/>
<BR>
<asp:LinkButton
id="butUpdate"
Text="Update"
CommandName="Update"
runat="server"
/>
</edititemtemplate>
</asp:datalist>
<BR><BR>
<asp:LinkButton
id="butAdd"
text="Add"
commandname="Add"
oncommand="CommandAdd_Click"
runat="server"
/>
</form>
</body>
</html>