常用方法 Entitys转换为DataTable

效率比较屁，将近可以用

public static DataTable EntitiesToDataTable<T>(List<T> entitys)
        {
            Type t = typeof(T);
            DataTable dt = new DataTable(t.Name);
            PropertyInfo[] pArray = t.GetProperties();


            Array.ForEach<PropertyInfo>(pArray, p =>
            {
                dt.Columns.Add(p.Name);
            });

            entitys.ForEach(item =>
            {
                var row = dt.NewRow();
                Array.ForEach<PropertyInfo>(pArray, p =>
                {                    
                    var value = t.GetProperty(p.Name).GetValue(item, null);
                    row[p.Name] = value;
                });
                dt.Rows.Add(row);
            });

            return dt;
        }