ASP.Net/ADO.net Database/SqlCommand — различия между версиями
Admin (обсуждение | вклад) м (1 версия) |
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(нет различий)
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Версия 15:30, 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>
<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>