FlexGrid合并单元格
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在WinForm的开发中，经常会用到FlexGrid控件，用于显示数据和编辑数据，合并单元格也是经常用到的。
1.单元格自动合并
C1FlexGrid 一帮情况下对于各单元格可以在行方向和列方向合并单元格，行或者列的AllowMerging的属性设置为True的时候，相邻的单元格内容如果相同，那么就会自动合并这两个单元格。此例为列方向自动合并。
行方向合并时，针对要合并的行进行设置。如 C1FlexGrid1.Rows(rownm).AllowMerging = True，其中rownm为行号。
另外、AllowMerging的属性设置为Spill （AllowMergingEnum 枚举型）的时候、如果一个单元格内的文字列长度大于单元格的长度时、相邻的单元格 （必须是空白单元格） 。参照【cccccccc】和【dddd】
2.手动指定单元格合并
使用GetCellRange方法可以手动指定需要合并的单元格
代码如下
C1FlexGrid1.AllowMerging = C1.Win.C1FlexGrid.AllowMergingEnum.Custom
Dim cr As C1.Win.C1FlexGrid.CellRange
cr = C1FlexGrid1.GetCellRange(1, 2, 1, 3)
C1FlexGrid1.MergedRanges.Add(cr)
cr = C1FlexGrid1.GetCellRange(2, 1, 3, 2)
C1FlexGrid1.MergedRanges.Add(cr)
cr = C1FlexGrid1.GetCellRange(2, 4, 3, 4)
C1FlexGrid1.MergedRanges.Add(cr)
cr = C1FlexGrid1.GetCellRange(4, 1, 5, 5)
C1FlexGrid1.MergedRanges.Add(cr)
cr = C1FlexGrid1.GetCellRange(1, 6, 5, 7)
C1FlexGrid1.MergedRanges.Add(cr)
3.Header部的单元格合并
同样用GetCellRange方法
代码如下
C1FlexGrid1.AllowMerging = C1.Win.C1FlexGrid.AllowMergingEnum.Custom
Dim cr As C1.Win.C1FlexGrid.CellRange
cr = C1FlexGrid1.GetCellRange(0, 0, 6, 0)
cr.StyleNew.TextAlign = C1.Win.C1FlexGrid.TextAlignEnum.CenterCenter
C1FlexGrid1.MergedRanges.Add(cr)
cr = C1FlexGrid1.GetCellRange(0, 1, 0, 5)
cr.StyleNew.TextAlign = C1.Win.C1FlexGrid.TextAlignEnum.CenterCenter
C1FlexGrid1.MergedRanges.Add(cr)
cr = C1FlexGrid1.GetCellRange(1, 1, 1, 2)
cr.StyleNew.TextAlign = C1.Win.C1FlexGrid.TextAlignEnum.CenterCenter
C1FlexGrid1.MergedRanges.Add(cr)
cr = C1FlexGrid1.GetCellRange(2, 1, 3, 2)
cr.StyleNew.TextAlign = C1.Win.C1FlexGrid.TextAlignEnum.CenterCenter
C1FlexGrid1.MergedRanges.Add(cr)
cr = C1FlexGrid1.GetCellRange(1, 3, 3, 5)
cr.StyleNew.TextAlign = C1.Win.C1FlexGrid.TextAlignEnum.CenterCenter
C1FlexGrid1.MergedRanges.Add(cr)
cr = C1FlexGrid1.GetCellRange(5, 1, 6, 1)
cr.StyleNew.TextAlign = C1.Win.C1FlexGrid.TextAlignEnum.CenterCenter
C1FlexGrid1.MergedRanges.Add(cr)
cr = C1FlexGrid1.GetCellRange(4, 2, 6, 2)
cr.StyleNew.TextAlign = C1.Win.C1FlexGrid.TextAlignEnum.CenterCenter
C1FlexGrid1.MergedRanges.Add(cr)
C1FlexGrid1.Rows(0).Item(0) = "A"
C1FlexGrid1.Rows(0).Item(1) = "B"
C1FlexGrid1.Rows(1).Item(1) = "C"
C1FlexGrid1.Rows(2).Item(1) = "D"
C1FlexGrid1.Rows(1).Item(3) = "E"
C1FlexGrid1.Rows(5).Item(1) = "F"
C1FlexGrid1.Rows(4).Item(2) = "G"
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