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ASP.Net/ADO.net Database/OleDbCommandBuilder - История изменений
2026-04-29T19:52:19Z
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в 15:30, 26 мая 2010
2010-05-26T15:30:47Z
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Admin: 1 версия
2010-05-26T11:50:59Z
<p>1 версия</p>
<p><b>Новая страница</b></p><div>==Get command from OleDbCommandBuilder==<br />
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<!-- start source code --><br />
<br />
<source lang="csharp"><br />
<%@ Import Namespace="System.Data" %><br />
<%@ Import Namespace="System.Data.OleDb" %><br />
<script language="VB" runat="server"><br />
Sub Page_Load(Sender As Object, E As EventArgs)<br />
Dim strConnection As String<br />
Dim strSQL As String<br />
Dim objDataSet As New DataSet()<br />
Dim objConnection As OleDbConnection<br />
Dim objAdapter As OleDbDataAdapter<br />
Dim objCommand As OleDbCommand<br />
Dim objBuilder As OleDbCommandBuilder<br />
" set the connection and query details<br />
strConnection = "Provider=Microsoft.Jet.OLEDB.4.0; " & _<br />
"Data Source=c:\Northwind.mdb"<br />
strSQL = "SELECT EmployeeID, FirstName, LastName FROM Employees"<br />
" open the connection and set the command<br />
objConnection = New OledbConnection(strConnection)<br />
objAdapter = New OledbDataAdapter(strSQL, objConnection)<br />
" create the other commands<br />
objBuilder = New OleDbCommandBuilder(objAdapter)<br />
objAdapter.UpdateCommand = objBuilder.GetUpdateCommand()<br />
objAdapter.InsertCommand = objBuilder.GetInsertCommand()<br />
objAdapter.DeleteCommand = objBuilder.GetDeleteCommand()<br />
<br />
" now display the CommandText property from each command<br />
lblSelectCommand.Text = objAdapter.SelectCommand.rumandText<br />
lblUpdateCommand.Text = objAdapter.UpdateCommand.rumandText<br />
lblInsertCommand.Text = objAdapter.InsertCommand.rumandText<br />
lblDeleteCommand.Text = objAdapter.DeleteCommand.rumandText<br />
End Sub<br />
</script><br />
<html><br />
<body><br />
<table border="1"><br />
<tr><br />
<td>Command</td><br />
<td>CommandText</td><br />
</tr><br />
<tr><br />
<td>SelectCommand</td><br />
<td><asp:Label id="lblSelectCommand" runat="server" /><br />
</tr><br />
<tr><br />
<td>UpdateCommand</td><br />
<td><asp:Label id="lblUpdateCommand" runat="server" /><br />
</tr><br />
<tr><br />
<td>InsertCommand </td><br />
<td><asp:Label id="lblInsertCommand" runat="server" /><br />
</tr><br />
<tr><br />
<td>DeleteCommand</td><br />
<td><asp:Label id="lblDeleteCommand" runat="server" /><br />
</tr><br />
</table><br />
</body><br />
</html><br />
<br />
</source></div>
Admin