DbProviderFactories.GetFactoryClasses

using System.Data.Common;
  private void Method1()
        {
            DataTable table = DbProviderFactories.GetFactoryClasses();
            dataGridView1.DataSource = table;
            dataGridView1.SelectionMode = DataGridViewSelectionMode.FullRowSelect;
            dataGridView1.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.DisplayedCells;
        }

Column ordinal	Column name	Description
0	Name	Human-readable name for the data provider.
1	Description	Human-readable description of the data provider.
2	InvariantName	Name that can be used programmatically to refer to the data provider.
3	AssemblyQualifiedName	Fully qualified name of the factory class, which contains enough information to instantiate the object.