ASP.Net/ADO.net Database/SqlCommand — различия между версиями

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Текущая версия на 11:51, 26 мая 2010

Dynamic sql command

<%@ Page Language="VB" %>
<script runat="server">
   Function FindByTitle(ByVal search As String) As System.Data.DataSet
     Dim connectionString As String = "server="(local)\NetSDK"; trusted_connection=true; Database="pubs""
     Dim sqlConnection As System.Data.SqlClient.SqlConnection = New System.Data.SqlClient.SqlConnection(connectionString)
    
     Dim queryString As String = "SELECT [titles].[title], [titles].[price], [titles].[notes], [titles].[pubdate] F"& _
       "ROM [titles] WHERE ([titles].[title] like @search)"
     Dim sqlCommand As System.Data.SqlClient.SqlCommand = New System.Data.SqlClient.SqlCommand(queryString, sqlConnection)
    
     sqlCommand.Parameters.Add("@search", System.Data.SqlDbType.NVarChar).Value = search
    
     Dim dataAdapter As System.Data.SqlClient.SqlDataAdapter = New System.Data.SqlClient.SqlDataAdapter(sqlCommand)
     Dim dataSet As System.Data.DataSet = New System.Data.DataSet
     dataAdapter.Fill(dataSet)
    
     Return dataSet
   End Function
    
  Sub Button1_Click(sender As Object, e As EventArgs)
     Dim sTitle As String = TextBox1.Text
     DataGrid1.DataSource = FindByTitle(sTitle)
     DataGrid1.DataBind()
  End Sub
</script>
<html>
<head>
</head>
<body>
    <form runat="server">
        <p>
            Find: 
            <asp:TextBox id="TextBox1" runat="server"></asp:TextBox>
            &nbsp;<asp:Button id="Button1" onclick="Button1_Click" runat="server" Text="Go"></asp:Button>
        </p>
        <p>
            <asp:DataGrid id="DataGrid1" runat="server" BorderWidth="5px" BorderColor="Olive" CellPadding="5">
                <HeaderStyle font-size="X-Small" font-names="Arial Narrow" font-bold="True" forecolor="White" backcolor="Olive"></HeaderStyle>
                <AlternatingItemStyle backcolor="Silver"></AlternatingItemStyle>
                <ItemStyle font-size="X-Small" font-names="Arial Narrow"></ItemStyle>
            </asp:DataGrid>
        </p>
    </form>
</body>
</html>
Источник — «http://nfex.ru/index.php?title=ASP.Net/ADO.net_Database/SqlCommand&oldid=1655»