在GridView裡合併儲存格

GridView裡合併相同內容的儲存格，是常有的需求。

以下的範例可選擇多個需要合併的欄位：(在PreRender事件裡處理)

protected void gv_PreRender(object sender, EventArgs e)

{

int[] mergeColumns = { 0 }; //要合併的欄位-編號(款)

foreach (int mergeColumn in mergeColumns)

{

int i = 1;

// 取得來源GridView

GridView gv = (GridView)sender;

if (gv!= null)

{

foreach (GridViewRow row in gv.Rows)

{

row.Cells[mergeColumn].RowSpan = 0;

if (row.RowIndex != 0)

{

if (row.Cells[mergeColumn].Text.Trim() == gv.Rows[(row.RowIndex - i)].Cells[mergeColumn].Text.Trim())

{

gv.Rows[(row.RowIndex - i)].Cells[mergeColumn].RowSpan += 1;

row.Cells[mergeColumn].Visible = false;

i += 1;

}

else

{

row.Cells[mergeColumn].RowSpan += 1;

i = 1;

}

}

else

{

row.Cells[mergeColumn].RowSpan = 1;

}

}

}

}

}