ASP.NET

<asp:TextBox ID="TextBoxDate" runat="server" />

if (!Page.IsPostBack)
{
    TextBoxDate.Text = DateTime.Now.ToString("dd MMM yyyy");
}

<?xml version="1.0"?>
<configuration>
    <connectionStrings>
        <add
            name="B.F.M.S"
            providerName="System.Data.SqlClient"
            connectionString="YOUR CONNECTION STRING HERE"
        />
    </connectionStrings>
</configuration>

<?xml version="1.0"?>
<configuration>
    <connectionStrings>
        <add
            name="TheEntryName"
            providerName="System.Data.SqlClient"
            connectionString="YOUR CONNECTION STRING HERE"
        />
    </connectionStrings>
</configuration>

using (SqlConnection connection = new SqlConnection(WebConfigurationManager.ConnectionStrings["TheEntryName"].ConnectionString))
{
    ...
}

using (SqlConnection connection = new SqlConnection(@"YOUR CONNECTION STRING HERE"))
{
    ...
}

"Data Source= VICKIE-PC\\VICTORIASQL2008；Initial Catalog = B.F.M.S； user id = ×××；password=×××"

@"Data Source= VICKIE-PC\VICTORIASQL2008；Initial Catalog = B.F.M.S； user id = ×××；password=×××"

using (SqlConnection connection = new SqlConnection(ConfigurationManager.ConnectionStrings["TheEntryName"].ConnectionString))
{
    ...
}