How do I use reflection to dynamically call a type?

I have a DataGrid and I need to convert it to a DataTable. The problem is that I need To be able to get the type of my DataSource dynamically. The grid DataSource is of type 'Observable' which is a class I have in my project, but my task is to be able to dynamically create the DataTable without needing to specify the type only using the DataSource. How can I generate a method that I can use to place in <T> without getting the error " 'mytype' is a variable but is used like a type" .

Type mytype = Grid_Job.DataSource.GetType();

DataTable dt = CreateDataTable<mytype>((IEnumerable<mytype>)Grid_Job.DataSource);

public static DataTable CreateDataTable<T>(IEnumerable<T> list)
        {
            Type type = typeof(T);
            var properties = type.GetProperties();

            DataTable dataTable = new DataTable();
            foreach (PropertyInfo info in properties)
            {
                dataTable.Columns.Add(new DataColumn(info.Name, Nullable.GetUnderlyingType(info.PropertyType) ?? info.PropertyType));
            }

            foreach (T entity in list)
            {
                object[] values = new object[properties.Length];
                for (int i = 0; i < properties.Length; i++)
                {
                    values[i] = properties[i].GetValue(entity);
                }

                dataTable.Rows.Add(values);
            }

            return dataTable;
        }

My Observable class is

public class Observable 
{
    public int JobNo { get; set; }
    public string JobName { get; set; }
    public string JobDescription { get; set; }
    public string Job_Type { get; set; }
    public string Job_Status { get; set; }
}