最近在做项目的时候经常遇到要合并单元格的情况,发现这个东西.net中并没有现成的方法,研究了一下,总结了两种方法。
这个主要都是行合并的,有以下两种情况
1、多行合并为一行,其中将某个或某几个单元格的内容合并起来
原始样式:
column1 column2
1 a
1 b
1 c
1 d
2 q
2 w
2 e
需要效果:
column1 column2
1 a\b\c\d
2 q\w\e
代 码:
private void DataGrid_CaseTeamList_Bind()
{
取得数据部分代码省略
dsSpeTeam = o.GetData(strSQL).Tables[0].DefaultView;
DataSet dsSpeL = o.GetData(strSQLSpe);
DataGrid_CaseTeamList.ItemCreated +=new DataGridItemEventHandler(DataGrid_CaseTeamList_ItemCreated);
DataGrid_CaseTeamList.DataSource = dsSpeL.Tables[0].DefaultView;
DataGrid_CaseTeamList.DataBind();
}
private void DataGrid_CaseTeamList_ItemCreated(object sender, DataGridItemEventArgs e)
{
DataGridItem item = e.Item;
if (item.ItemType == ListItemType.Item || item.ItemType == ListItemType.AlternatingItem)
{
DataRowView row = (DataRowView)e.Item.DataItem;
//set the filter condition
string sSpecialist = row["column1"].ToString();
dsSpeTeam.RowFilter = string.Format(" column1 = '{0}'", sSpecialist.Replace("'", "''"));
//----------------------------------------------------------
// 若要将checkbox 合并放入,可使用下面代码 代替以下部分
// CheckBoxList boxList = new CheckBoxList();
// boxList.RepeatColumns = 2;
// boxList.RepeatDirection = RepeatDirection.Horizontal;
// boxList.DataSource = dsSpeTeam;
// boxList.DataTextField = "Team";
// boxList.DataValueField = "Team";
// PlaceHolder holder = (PlaceHolder) e.Item.FindControl("TeamArray");
// holder.Controls.Add(boxList);
//----------------------------------------------------------
DataRowView row1 = null;
IEnumerator Enum = dsSpeTeam.GetEnumerator();
string strTeam= "";
while (Enum.MoveNext())
{
row1 = (DataRowView) Enum.Current;
strTeam = strTeam + row1["column2"] + "/";
}
Label lbl = new Label();
if (strTeam.Length > 0)
{
lbl.Text = strTeam.Substring(0,strTeam.Length-1);
}
else
{
lbl.Text = " ";
}
lbl.Style.Add("padding-left","5px");
//在datagrid中,合并目标列放一个PlaceHolder控件
//------------------------------------------------------------
PlaceHolder holder = (PlaceHolder) e.Item.FindControl("column2Value");
holder.Controls.Add(lbl);
}
}
2、将Datagrid中的某些相同的单元格合并
原始样式:
Column1 Column2
1 a
1 b
1 c
2 x
2 y
2 z
需要效果:
Column1 Column2
a
1 b
c
_____________________________
x
2 y
z
代 码:
/// used to merge cells
/// </summary>
/// <param name="dg">datagrid will be merged</param>
/// <param name="GroupColumn">merged column</param>
/// <param name="compareColumn">basis column</param>
private void spanRow(DataGrid dg,int GroupColumn,int compareColumn)
{
int i = 0;
int j = 0;
int rowSpan;
string strTemp = "";
for(i=0;i<dg.Items.Count;i++)
{
rowSpan = 1;
strTemp = dg.Items[i].Cells[compareColumn].Text;
for (j=i+1;j<dg.Items.Count;j++)
{
if (string.Compare(strTemp,dg.Items[j].Cells[compareColumn].Text) == 0)
{
rowSpan += 1;
dg.Items[i].Cells[GroupColumn].RowSpan = rowSpan;
dg.Items[j].Cells[GroupColumn].Visible = false;
}
else
{
break;
}
}
i = j -1;
}
}
以上两种方法可合并使用