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在实际工作中,往往需要合并表格头部的单元格,下面就是一个实现的例子。运行结果如图:
C#
<%
...
@ 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"
>
<
script
runat
="server"
>
...
ICollection CreateDataSource()

...
{
System.Data.DataTable dt
=
new
System.Data.DataTable();
System.Data.DataRow dr;
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)));
for
(
int
i
=
0
; i
<
8
; i
++
)

...
{
System.Random rd
=
new
System.Random(Environment.TickCount
*
i); ;
dr
=
dt.NewRow();
dr[
0
]
=
"
学生
"
+
i.ToString();
dr[
1
]
=
System.Math.Round(rd.NextDouble()
*
100
,
2
);
dr[
2
]
=
System.Math.Round(rd.NextDouble()
*
100
,
2
);
dr[
3
]
=
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)

...
{
GridViewRow rowHeader
=
new
GridViewRow(
0
,
0
, DataControlRowType.Header, DataControlRowState.Normal);
rowHeader.BackColor
=
System.Drawing.Color.White;
rowHeader.Font.Bold
=
true
;

TableCellCollection cells
=
e.Row.Cells;
TableCell headerCell
=
new
TableCell();
headerCell.Text
=
""
;
rowHeader.Cells.Add(headerCell);

headerCell
=
new
TableCell();
headerCell.Text
=
"
学生成绩
"
;
headerCell.ColumnSpan
=
cells.Count
-
1
;
headerCell.HorizontalAlign
=
HorizontalAlign.Center;

rowHeader.Cells.Add(headerCell);
rowHeader.Visible
=
true
;
GridView1.Controls[
0
].Controls.AddAt(
0
, rowHeader);
}
}
protected
void
GridView1_RowDataBound(object sender, GridViewRowEventArgs e)

...
{
e.Row.Attributes.Add(
"
style
"
,
"
background:#FFF
"
);
}
</
script
>
<
html
xmlns
="http://www.w3.org/1999/xhtml"
>
<
head
>
<
title
>
合并 GridView 的表头单元格
</
title
>
</
head
>
<
body
>
<
form
id
="Form1"
runat
="server"
>
<
asp:GridView
ID
="GridView1"
runat
="server"
CellSpacing
="1"
CellPadding
="3"
Font-Size
="12px"
Width
="300px"
BackColor
="orange"
BorderWidth
="0"
OnRowDataBound
="GridView1_RowDataBound"
OnRowCreated
="GridView1_RowCreated"
>
</
asp:GridView
>
</
form
>
</
body
>
</
html
>
VB.NET
<%
...
@ Page Language
=
"
VB
"
%>
<!
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
>
<
script
runat
="server"
>
...
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)))
Dim i As Integer
=
0
For i
=
0
To
7
Dim rd As System.Random
=
New System.Random(Environment.TickCount
*
i)

dr
=
dt.NewRow
dr(
0
)
=
"
学生
"
+
i.ToString
dr(
1
)
=
System.Math.Round(rd.NextDouble
*
100
,
2
)
dr(
2
)
=
System.Math.Round(rd.NextDouble
*
100
,
2
)
dr(
3
)
=
System.Math.Round(rd.NextDouble
*
100
,
2
)
dt.Rows.Add(dr)
Next
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)
rowHeader.BackColor
=
System.Drawing.Color.White
rowHeader.Font.Bold
=
True
Dim cells As TableCellCollection
=
e.Row.Cells
Dim headerCell As TableCell
=
New TableCell
headerCell.Text
=
""
rowHeader.Cells.Add(headerCell)
headerCell
=
New TableCell
headerCell.Text
=
"
学生成绩
"
headerCell.ColumnSpan
=
cells.Count
-
1
headerCell.HorizontalAlign
=
HorizontalAlign.Center
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)
e.Row.Attributes.Add(
"
style
"
,
"
background:#FFF
"
)
End Sub

</
script
>
<
html
xmlns
="http://www.w3.org/1999/xhtml"
>
<
head
>
<
title
>
合并 GridView 的表头单元格
</
title
>
</
head
>
<
body
>
<
form
id
="Form1"
runat
="server"
>
<
asp:GridView
ID
="GridView1"
runat
="server"
CellSpacing
="1"
CellPadding
="3"
Font-Size
="12px"
Width
="300px"
BackColor
="orange"
BorderWidth
="0"
OnRowDataBound
="GridView1_RowDataBound"
OnRowCreated
="GridView1_RowCreated"
>
</
asp:GridView
>
</
form
>
</
body
>
</
html
>
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