ASP.NET Tutorial/Configuration/ConnectionStringSettings

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Modifying connection string properties at runtime (C#)

<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!Page.IsPostBack)
        {
            
            ConnectionStringSettings conn = new ConnectionStringSettings();
            conn.ConnectionString = "Server=localhost;User ID=sa;Password=password; Database=Northwind;Persist Security Info=True";
            conn.Name = "AppConnectionString2";
            conn.ProviderName = "System.Data.SqlClient";
            Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("/YourRoot");
            config.ConnectionStrings.ConnectionStrings.Add(conn);
            config.Save();
        }
    }
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:SqlDataSource ID="SqlDataSource1" Runat="server">
        </asp:SqlDataSource>
    </div>
    </form>
</body>
</html>


Modifying connection string properties at runtime (VB)

<%@ Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
    
        If (Not Page.IsPostBack) Then
            Dim conn As New ConnectionStringSettings()
            conn.ConnectionString = _
                 "Server=localhost;User ID=sa;Password=password" & _
                 "Database=Northwind;Persist Security Info=True"
            conn.Name = "AppConnectionString2"
            conn.ProviderName = "System.Data.SqlClient"
            Dim config as Configuration = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("/YourRoot")
            config.ConnectionStrings.ConnectionStrings.Add(conn)
            config.Save()
        End If
    End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Untitled Page</title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
    <asp:SqlDataSource ID="SqlDataSource1" Runat="server">
        </asp:SqlDataSource>
    </div>
    </form>
</body>
</html>
Источник — «http://nfex.ru/index.php?title=ASP.NET_Tutorial/Configuration/ConnectionStringSettings&oldid=2826»