C# custom attribute shorthad

Question

Lets say I have an attribute with a fairly long/complex list of parameters. For example: [DataSource("Microsoft.VisualStudio.TestTools.DataSource.CSV","|DataDirectory|\\stores.csv","stores#csv", DataAccessMethod.Sequential)]

Is there a way to create a custom attribute as a shorthand for this, so that instead of typing the above for every method, I can just use [CustomDataSource]?

Answer 1

The DataSource attribute is sealed, you cannot inherit from it.

The easiest solution is to use constants:

public class Const
{
    public const string Provider = "Microsoft.VisualStudio.TestTools.DataSource.CSV";
    public const string ConnString = "|DataDirectory|\\stores.csv";
    public const string Table = "stores#csv";
    public const string Method = DataAccessMethod.Sequential;
}

[DataSource(Const.Provider, Const.ConnString , Const.Table , Const.Method)]