private int _sorterOrder;   //1表示升序，0表示降序

  　　　　private int _previousIndex = -;    //记录前一次点击的列索引

  　　　　private datagridview1_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)

        {

            //判断列标头是否被连续点击，是则改变上次排序规则，否则按升序排序

            if (this._previousIndex == e.ColumnIndex)

            {

                this._sorterOrder = -this._sorterOrder;

            }

            else

            {

                this._sorterOrder = ;

            }

            this._previousIndex = e.ColumnIndex;  
　　　　　　　ListComparison(datagridview1.Columns[e.ColumnIndex].DataPropertyName);

        }

        /// <summary>

        /// List集合比较器

        /// </summary>

        /// <param name="propName">属性名</param>

        private void ListComparison(string propName)

        {

            Type type = typeof(MyModel);

            PropertyInfo property = type.GetProperty(propName);

            List<MyModel> modelList = datagridview1.DataSource as List<MyModel>;

            modelList.Sort((x, y) =>

            {

                string value1 = property.GetValue(x, null).ToString();

                string value2 = property.GetValue(y, null).ToString();

                double number1, number2;

                //如果属性值为数字则转换为浮点数进行比较，否则按照字符串比较

                if (double.TryParse(value1, out number1) && double.TryParse(value2, out number2))

                {

                    return this._sorterOrder ==  ? number1.CompareTo(number2) : number2.CompareTo(number1);

                }

                return this._sorterOrder ==  ? value1.CompareTo(value2) : value2.CompareTo(value1);

            });

        }