Excel单元格的合并

Excel.Application  myExcel=new Excel.Application();   myExcel.Application.Workbooks.Add(true);   myExcel.Visible=true;   Excel.Worksheet worksheet=(Excel.Worksheet)myExcel.ActiveSheet;

 Excel.Range  rH = worksheet.get_Range("A1","A3");     rH.Merge(0);   myExcel.Cells[1,1]="赋值";