<div>
<asp:GridView ID="gvIncome" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:TemplateField HeaderText="一級"> 
<ItemTemplate>
<asp:Label ID="Label0" runat="server" Text='<%#Eval("aname") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="二級">
<ItemTemplate>
<asp:Label ID="Label1" runat="server" Text='<%#Eval("bname") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="三級">
<ItemTemplate>
<asp:Label ID="Label2" runat="server" Text='<%#Eval("cname") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="四級">
<ItemTemplate>
<asp:Label ID="Label3" runat="server" Text='<%#Eval("dname") %>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
GridView 前臺代碼

<span style="line-height: 1.5; font-family: verdana, Arial, Helvetica, sans-serif; font-size: 14px; background-color: rgb(255, 255, 255);"> </span>

public void DataBind()
{
string sql = "select a.aname,b.bname,c.cname ,d.dname from aa as a right join bb as b on a.aid=b.aid right join cc as c on b.bid=c.bid left join dd as d on d.cid=c.cid order by a.aid";
SqlDataAdapter sda = new SqlDataAdapter(sql, cn);
DataSet ds = new DataSet();
sda.Fill(ds);
gvIncome.DataSource = ds;
gvIncome.DataBind();
//MergeRows(gvIncome.HeaderRow, gvIncome.Rows.Count);
int colnum = gvIncome.Columns.Count; // 獲取GridView中獲取列數(shù)
MergeRows(gvIncome, 4, "Label"); // GridView 要整合的列數(shù) 需要改變的Lable控件
}
public static void MergeRows(GridView gvw, int colnum, string controlNameo)
{
for (int col = 0; col < colnum; col++) // 遍歷每一列
{
string controlName = controlNameo + col.ToString(); // 獲取當(dāng)前列需要改變的Lable控件ID
for (int rowIndex = gvw.Rows.Count - 2; rowIndex >= 0; rowIndex--) //GridView中獲取行數(shù) 并遍歷每一行
{
GridViewRow row = gvw.Rows[rowIndex]; // 獲取當(dāng)前行
GridViewRow previousRow = gvw.Rows[rowIndex + 1]; // 獲取當(dāng)前行 的上一行
Label row_lbl = row.Cells[col].FindControl(controlName) as Label; //// 獲取當(dāng)前列當(dāng)前行 的 Lable 控件ID 的文本
Label previousRow_lbl = previousRow.Cells[col].FindControl(controlName) as Label; //// 獲取當(dāng)前列當(dāng)前行 的上一行 的 Lable控件ID 的文本
if (row_lbl != null && previousRow_lbl != null) // 如果當(dāng)前行 和 上一行 要改動的 Lable 的ID 的文本不為空
{
if (row_lbl.Text == previousRow_lbl.Text) // 如果當(dāng)前行 和 上一行 要改動的 Lable 的ID 的文本不為空 且相同
{
// 當(dāng)前行的當(dāng)前單元格（單元格跨越的行數(shù)。 默認(rèn)值為 0 ） 與下一行的當(dāng)前單元格的跨越行數(shù)相等且小于一 則 返回2 否則讓上一行行的當(dāng)前單元格的跨越行數(shù)+1
row.Cells[col].RowSpan = previousRow.Cells[col].RowSpan < 1 ? 2 : previousRow.Cells[col].RowSpan + 1;
//并讓上一行的當(dāng)前單元格不顯示
previousRow.Cells[col].Visible = false;
}
}
}
}
}
GridView 后臺代碼

// table樣式
<style>
table {
border-collapse:collapse;
}
table tr td,th {
border:1px solid black;
}
</style>
//*****************
<div>
<table>
<tr>
<th>一級</th> <th>二級</th> <th>三級</th> <th>四級</th>
</tr>
<asp:Repeater ID="rptIncome" runat="server">
<ItemTemplate>
<tr>
<td runat="server" id="td0"><%#Eval("aname") %></td>
<td runat="server" id="td1"><%#Eval("bname") %></td>
<td runat="server" id="td2"><%#Eval("cname") %></td>
<td runat="server" id="td3"><%#Eval("dname") %></td>
</tr>
</ItemTemplate>
</asp:Repeater>
</table>
</div>
Repeater 前臺代碼

public void DataBind()
{
string sql = "select a.aname,b.bname,c.cname ,d.dname from aa as a right join bb as b on a.aid=b.aid right join cc as c on b.bid=c.bid left join dd as d on d.cid=c.cid order by a.aid";
SqlDataAdapter sda = new SqlDataAdapter(sql, cn);
DataSet ds = new DataSet();
sda.Fill(ds);
rptIncome.DataSource = ds;
rptIncome.DataBind();
for (int i = 0; i < 4; i++) // 遍歷每一列
{
string rpttd = "td";
string tdIdName1 = rpttd + i.ToString();
MergeCell(tdIdName1); // 把當(dāng)前列的 td 的 ID文本作為方法的參數(shù)
}
}
/// <summary>
/// 
/// </summary>
/// <param name="tdIdName1">當(dāng)前列當(dāng)前行的 td 的ID文本</param>
private void MergeCell(string tdIdName1)
{
for (int i = rptIncome.Items.Count - 1; i > 0; i--) // rptIncome.Items.Count - 1 數(shù)據(jù)總行數(shù)（數(shù)據(jù)從0開始） 遍歷當(dāng)前列的每一行
{
MergeCellSet(tdIdName1, i); 
} 
}
/// <summary>
/// 
/// </summary>
/// <param name="tdIdName1">當(dāng)前列當(dāng)前行的 td 的ID文本</param>
/// <param name="i">當(dāng)前行</param>
private void MergeCellSet(string tdIdName1, int i)
{
HtmlTableCell cellPrev = rptIncome.Items[i - 1].FindControl(tdIdName1) as HtmlTableCell; // 獲取下一行當(dāng)前列的 td 所在的單元格
HtmlTableCell cell = rptIncome.Items[i].FindControl(tdIdName1) as HtmlTableCell; // 獲取當(dāng)前行當(dāng)前列的 td 所在的單元格
cell.RowSpan = (cell.RowSpan == -1) ? 1 : cell.RowSpan; // 獲取當(dāng)前行當(dāng)前列單元格跨越的行數(shù) 
cellPrev.RowSpan = (cellPrev.RowSpan == -1) ? 1 : cellPrev.RowSpan; // 獲取下一行當(dāng)前列單元格跨越的行數(shù) 
if (cell.InnerText == cellPrev.InnerText)
{
// 讓下一行的當(dāng)前單元格的跨越行數(shù) + 當(dāng)前行的跨越行數(shù)
cellPrev.RowSpan += cell.RowSpan;
cell.Visible = false; // 隱藏當(dāng)前行
//關(guān)鍵代碼，再判斷執(zhí)行第2列的合并單元格方法
}
}
Repeater 后臺代碼