GridView和DataGrid相同列合并
（一）普通列
/// <summary> /// Gridview列的合并（普通列，不包含模板列） /// 注意：1.GridView在绑定的时候进行分组和排序，才能让相同的行放在一起 /// 2.方法应用的时机，应该在Gridview的DataBound事件中使用 /// </summary> /// <param name="gv">需要合并的GridView对象</param> /// <param name="columnIndex">所要合并列的索引</param> public static void UnitCell(GridView gv, int columnIndex) { int i = 0; //当前行数 string lastType = string.Empty; //当前判断是否合并行对应列的值 int lastCell = 0; //判断最后一个相同值的行的索引 if (gv.Rows.Count > 0) { lastType = gv.Rows[0].Cells[columnIndex].Text.ToString(); gv.Rows[0].Cells[columnIndex].RowSpan = 1; lastCell = 0; } for (i = 1; i < gv.Rows.Count; i++) { if (gv.Rows[i].Cells[columnIndex].Text == lastType) { gv.Rows[i].Cells[columnIndex].Visible = false; gv.Rows[lastCell].Cells[columnIndex].RowSpan++; } else { lastType = gv.Rows[i].Cells[columnIndex].Text.ToString(); lastCell = i; gv.Rows[i].Cells[columnIndex].RowSpan = 1; } } } /// <summary> /// DataGrid列的合并（普通列，不包含模板列） /// 注意：1.DataGrid在绑定的时候进行分组和排序，才能让相同的行放在一起 /// 2.方法应用的时机，应该在DataGrid的DataBound事件中使用 /// </summary> /// <param name="dg">需要合并的DataGrid对象</param> /// <param name="columnIndex">所要合并列的索引</param> public static void UnitCell_T(DataGrid dg, int columnIndex) { int i = 0; //当前行数 string lastType = string.Empty; //当前判断是否合并行对应列的值 int lastCell = 0; //判断最后一个相同值的行的索引 if (dg.Items.Count> 0) { lastType = dg.Items[0].Cells[columnIndex].Text.ToString(); dg.Items[0].Cells[columnIndex].RowSpan = 1; lastCell = 0; } for (i = 1; i < dg.Items.Count; i++) { if (dg.Items[i].Cells[columnIndex].Text == lastType) { dg.Items[i].Cells[columnIndex].Visible = false; dg.Items[lastCell].Cells[columnIndex].RowSpan++; } else { lastType = dg.Items[i].Cells[columnIndex].Text.ToString(); lastCell = i; dg.Items[i].Cells[columnIndex].RowSpan = 1; } } }（二）模板列
/// <summary> /// Gridview列的合并（模板列） /// </summary> /// <param name="gv">需要合并的GridView对象</param> /// <param name="columnIndex">所要合并列的索引</param> /// <param name="lblName">模板列对象的ID</param> public static void UnitCell(GridView gv, int columnIndex, string lblName) { int i = 0; //当前行数 string lastType = string.Empty; //当前判断是否合并行对应列的值 int lastCell = 0; //判断最后一个相同值的行的索引 if (gv.Rows.Count > 0) { lastType = (gv.Rows[0].Cells[columnIndex].FindControl(lblName) as Label).Text; gv.Rows[0].Cells[columnIndex].RowSpan = 1; lastCell = 0; } for (i = 1; i < gv.Rows.Count; i++) { if ((gv.Rows[i].Cells[columnIndex].FindControl(lblName) as Label).Text == lastType) { gv.Rows[i].Cells[columnIndex].Visible = false; gv.Rows[lastCell].Cells[columnIndex].RowSpan++; } else { lastType = (gv.Rows[i].Cells[columnIndex].FindControl(lblName) as Label).Text.ToString(); lastCell = i; gv.Rows[i].Cells[columnIndex].RowSpan = 1; } } }（三）在DataBound事件中调用即可。
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