gridview合并列头问题

Question

最近做的b/s的项目，需要做一个报表，我想用gridview实现，到网上看了一些例子，其中有一个是合并列头，我按着上面写的方法在GridView1_RowCreated事件中添加这样一句话TableCellCollection a = e.Row.RowType;结构运行报错，提示为：无法将类型“System.Web.UI.WebControls.DataControlRowType”隐式转换为“System.Web.UI.WebControls.TableCellCollection。希望能尽快得到答案

Answer 1

把这个TableCellCollection a = e.Row.RowType;
改成:
TableCellCollection a = e.Row.Cells;

Answer 2

OnRowCreated="classall_rowcreated"if(e.Row.RowType==DataControlRowType.Header){
            GridViewRow rowHeader2  = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
            TableCellCollection cells2  = e.Row.Cells;
            TableCell headerCell2  = new TableCell();
            headerCell2.Text = "课程名称";
            headerCell2.RowSpan = 2;
            rowHeader2.Cells.Add(headerCell2);

Answer 3

OnRowCreated="classall_rowcreated"if(e.Row.RowType==DataControlRowType.Header){
            GridViewRow rowHeader2  = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
            TableCellCollection cells2  = e.Row.Cells;
            TableCell headerCell2  = new TableCell();
            headerCell2.Text = "课程名称";
            headerCell2.RowSpan = 2;
            rowHeader2.Cells.Add(headerCell2);

Answer 4

OnRowCreated="classall_rowcreated"if(e.Row.RowType==DataControlRowType.Header){
            GridViewRow rowHeader2  = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
            TableCellCollection cells2  = e.Row.Cells;
            TableCell headerCell2  = new TableCell();
            headerCell2.Text = "课程名称";
            headerCell2.RowSpan = 2;
            rowHeader2.Cells.Add(headerCell2);

Answer 5

OnRowCreated="classall_rowcreated"if(e.Row.RowType==DataControlRowType.Header){
            GridViewRow rowHeader2  = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
            TableCellCollection cells2  = e.Row.Cells;
            TableCell headerCell2  = new TableCell();
            headerCell2.Text = "课程名称";
            headerCell2.RowSpan = 2;
            rowHeader2.Cells.Add(headerCell2);