ASP.NET 2.0中GridView无限层复杂表头的实现(摘抄)

(原文)

实现方法就是给单元格填充我们想要的格式代码。



C#

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

// // 关键单元格// 表头文字// 表头文字// 表头文字// // // 表头文字// 表头文字// 表头文字// // // 表头文字// 表头文字// 表头文字// 表头文字// 表头文字";
// // 上面的样式可以设置斜线

Literal newCells = new Literal();
newCells.Text = @"表头文字1表头文字2表头文字3表头文字4";
newCells.Text += @"
表头文字5表头文字6表头文字7";
newCells.Text += @"
表头文字8表头文字9表头文字10表头文字11表头文字12";

TableCellCollection cells = e.Row.Cells;
TableHeaderCell headerCell = new TableHeaderCell();
//下面的属性设置与 关键单元格要一致
headerCell.RowSpan = 2;
headerCell.Controls.Add(newCells);
rowHeader.Cells.Add(headerCell);

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");
}
}

为 GridView 添加多层表头

VB.NET

<%@ Page Language="VB" AutoEventWireup="true" %>
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

Function CreateDataSource() As ICollection
Dim dt As System.Data.DataTable = New System.Data.DataTable
Dim dr As System.Data.DataRow
dt.Columns.Add(New System.Data.DataColumn("学生班级", GetType(System.String)))
dt.Columns.Add(New System.Data.DataColumn("学生姓名", GetType(System.String)))
dt.Columns.Add(New System.Data.DataColumn("语文", GetType(System.Decimal)))
dt.Columns.Add(New System.Data.DataColumn("数学", GetType(System.Decimal)))
dt.Columns.Add(New System.Data.DataColumn("英语", GetType(System.Decimal)))
dt.Columns.Add(New System.Data.DataColumn("计算机", GetType(System.Decimal)))
Dim i As Integer = 0
While i < 8
Dim rd As System.Random = 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.Math.Min(System.Threading.Interlocked.Increment(i), i - 1)
End While
Dim dv As System.Data.DataView = New System.Data.DataView(dt)
Return dv
End Function

Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
If Not IsPostBack Then
GridView1.BorderColor = System.Drawing.Color.DarkOrange
GridView1.DataSource = CreateDataSource()
GridView1.DataBind()
End If
End Sub

Protected Sub GridView1_RowCreated(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
If e.Row.RowType = DataControlRowType.Header Then
Dim rowHeader As GridViewRow = New GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal)
Dim HeaderBackColor As String = "#EDEDED"
rowHeader.BackColor = System.Drawing.ColorTranslator.FromHtml(HeaderBackColor)
Dim newCells As Literal = New Literal
newCells.Text = "表头文字1" + _
" 表头文字2" + _
" 表头文字3" + _
" 表头文字4" + _
" " + _
" " + _
" 表头文字5" + _
" 表头文字6" + _
" 表头文字7" + _
" " + _
" " + _
" 表头文字8" + _
" 表头文字9" + _
" 表头文字10" + _
" 表头文字11" + _
" 表头文字12"
Dim cells As TableCellCollection = e.Row.Cells
Dim headerCell As TableHeaderCell = New TableHeaderCell
headerCell.RowSpan = 2
headerCell.Controls.Add(newCells)
rowHeader.Cells.Add(headerCell)
rowHeader.Cells.Add(headerCell)
rowHeader.Visible = True
GridView1.Controls(0).Controls.AddAt(0, rowHeader)
End If
End Sub

Protected Sub GridView1_RowDataBound(ByVal sender As Object, ByVal e As GridViewRowEventArgs)
If e.Row.RowType = DataControlRowType.Header Then
e.Row.Attributes.Add("style", "background:#9999FF;color:#FFFFFF;font-size:14px")
Else
e.Row.Attributes.Add("style", "background:#FFF")
End If
End Sub

为 GridView 添加多层表头