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ASP.NET 2.0中GridView无限层复杂表头的实现

2007-10-27 16:19 453 查看

<%@ Page Language="C#" AutoEventWireup="true" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

// 计算数据，完全可以从数据看取得

ICollection CreateDataSource( )

{

System.Data.DataTable dt = new System.Data.DataTable();

System.Data.DataRow dr;

dt.Columns.Add(new System.Data.DataColumn("学生班级", typeof(System.String)));

dt.Columns.Add(new System.Data.DataColumn("学生姓名", typeof(System.String)));

dt.Columns.Add(new System.Data.DataColumn("语文", typeof(System.Decimal)));

dt.Columns.Add(new System.Data.DataColumn("数学", typeof(System.Decimal)));

dt.Columns.Add(new System.Data.DataColumn("英语", typeof(System.Decimal)));

dt.Columns.Add(new System.Data.DataColumn("计算机", typeof(System.Decimal)));

for (int i = 0; i < 8; i++)

{

System.Random rd = new System.Random(Environment.TickCount * i); ;

dr = dt.NewRow();

dr[0] = "班级" + i.ToString();

dr[1] = "学生" + i.ToString();

dr[2] = System.Math.Round(rd.NextDouble() * 100, 2);

dr[3] = System.Math.Round(rd.NextDouble() * 100, 2);

dr[4] = System.Math.Round(rd.NextDouble() * 100, 2);

dr[5] = System.Math.Round(rd.NextDouble() * 100, 2);

dt.Rows.Add(dr);

}

System.Data.DataView dv = new System.Data.DataView(dt);

return dv;

}

protected void Page_Load( object sender, EventArgs e )

{

if (!IsPostBack)

{

GridView1.BorderColor = System.Drawing.Color.DarkOrange;

GridView1.DataSource = CreateDataSource();

GridView1.DataBind();

}

protected void GridView1_RowCreated( object sender, GridViewRowEventArgs e )

{

if (e.Row.RowType == DataControlRowType.Header)

{

//创建一个GridViewRow，相当于表格的 TR 一行

GridViewRow rowHeader = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);

string HeaderBackColor = "#EDEDED";

rowHeader.BackColor = System.Drawing.ColorTranslator.FromHtml(HeaderBackColor);

//实现确定要显示的表头样式，也可以通过计算生成

// <tr>

// <td rowspan='2'>关键单元格</td>

// <td colspan='2'>表头文字</td>

// <td>表头文字</td>

// </tr>

// <tr bgcolor='#FFF'>

// <td colspan='2'>表头文字</td>

// <td rowspan='2'>表头文字</td>

// <td colspan='2'>表头文字</td>

// </tr>

// <tr bgcolor='#FFF'>

// <td>表头文字</td>

// <td>表头文字</td>";

// </tr>

// 上面的样式可以设置斜线

Literal newCells = new Literal();

newCells.Text = @"表头文字1</th>

</tr>

<tr bgcolor='" + HeaderBackColor + "'>";

newCells.Text += @"

</tr>

<tr bgcolor='" + HeaderBackColor + "'>";

newCells.Text += @"

<th>表头文字12";

TableCellCollection cells = e.Row.Cells;

TableHeaderCell headerCell = new TableHeaderCell();

//下面的属性设置与 <td rowspan='2'>关键单元格</td> 要一致

headerCell.RowSpan = 2;

headerCell.Controls.Add(newCells);

rowHeader.Cells.Add(headerCell);

rowHeader.Visible = true;

//添加到 GridView1

GridView1.Controls[0].Controls.AddAt(0, rowHeader);

}

protected void GridView1_RowDataBound( object sender, GridViewRowEventArgs e )

{

if (e.Row.RowType == DataControlRowType.Header)

{

e.Row.Attributes.Add("style", "background:#9999FF;color:#FFFFFF;font-size:14px");

}

else

{

e.Row.Attributes.Add("style", "background:#FFF");

}

</script>

<head>

<title>为 GridView 添加多层表头</title>

</head>

<body>

<asp:GridView ID="GridView1" runat="server" CellSpacing="1" CellPadding="3" Font-Size="12px"

Width="600px" BackColor="#000000" BorderWidth="0" OnRowDataBound="GridView1_RowDataBound"

OnRowCreated="GridView1_RowCreated">

</asp:GridView>

</form>

</body>

</html>

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