DataGridView多维表头的实现方法

         {
             return _baseColumnHeadHeight * (endY - startY+1);
         }

给一段使用的实例代码，这里要预先给DataGridView每一列设好绑定的字段，否则自动添加的列是做不出效果来的。

HeaderItem item= this.boundGridView1.Headers.GetHeaderByLocation(0, 0);
             item.EndY = 2;
             item = this.boundGridView1.Headers.GetHeaderByLocation(9,0 );
             item.EndY = 2;
             item = this.boundGridView1.Headers.GetHeaderByLocation(10, 0);
             item.EndY = 2;
             item = this.boundGridView1.Headers.GetHeaderByLocation(11, 0);
             item.EndY = 2;

             this.boundGridView1.Headers.AddHeader(1, 2, 1, 1, "语文");
             this.boundGridView1.Headers.AddHeader(3, 4, 1, 1, "数学");
             this.boundGridView1.Headers.AddHeader(5, 6, 1, 1, "英语");
             this.boundGridView1.Headers.AddHeader(7, 8, 1, 1, "X科");
             this.boundGridView1.Headers.AddHeader(1, 8, 2, 2, "成绩");

效果图如下所示

 

总的来说自我感觉有点小题大做，但想不出有什么更好的办法，各位如果觉得以上说的有什么不好的，欢迎拍砖；如果发现以上有什么说错了，恳请批评指正；如果觉得好的，请支持一下。谢谢！最后附上整个控件的源码
控件的完整代码


     public class BoundGridView : DataGridView
     {
         private int _baseColumnHeadHeight;

         public BoundGridView():base()
         {
             this.ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.DisableResizing;
             _baseColumnHeadHeight = this.ColumnHeadersHeight;
             this.Headers = new HeaderCollection(this.Columns);