主题：[求助]像EXCEL vb那样指定单元格内容的写法是什么？

如果想要代码指定坐标单元格的内容应该怎么做？  比如我想在坐标（4,6）写入内容，并把红色的底纹转移到(4,6)单元格

Dim tb As Table = Tables("表A")
Dim cs1 As C1.Win.C1FlexGrid.CellStyle = tb.Grid.Styles.Add("样式1")
Dim rng As C1.Win.C1FlexGrid.CellRange = tb.Grid.GetCellRange(4,6, 4,6)
cs1.backcolor = color.red
rng.style = cs1
tb.grid(4,6) = "abc"

原来位置的底纹怎么去掉？

Dim tb As Table = Tables("表A")
Dim rng As C1.Win.C1FlexGrid.CellRange = tb.Grid.GetCellRange(4,6, 4,6)
rng.style = Nothing
tb.grid(4,6) = ""