DataGridView 绑定List集合后实现自定义排序

　　　　private int _sorterOrder;   //1表示升序，0表示降序
　　　　private int _previousIndex = -1;    //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 = 1;
}
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 == 1 ? number1.CompareTo(number2) : number2.CompareTo(number1);
}

return this._sorterOrder == 1 ? value1.CompareTo(value2) : value2.CompareTo(value1);
});
}