in c# global connection to be used in all classes

Question

I\'ve a connection string saved to Properties.Settings.Default, i need to use an sql connection in all classes without having to declare it everytime, so how should

Answer 1

I've have something similar set up in an old project like so. It's worth noting that you should always be using a new SqlConnection for all your operations, because of connection pooling.

public static class SqlConnectionUtil
{
    public static string DefaultConnectionString { get; private set; }

    static SqlConnectionUtil()
    {
        SqlConnectionUril.DefaultConnectionString = 
                Properties.Settings.Default.TheConnectionString;
    }

    public static SqlConnection Create()
    {
        return new SqlConnection(SqlConnectionUtil.DefaultConnectionString);
    }
}

You would then use it like this.

using (var connection = SqlConnectionUtil.Create())
{
    using (var command = connection.CreateCommand())
    {
        // do things.
    }
}