ASP.NET 2.0中合并 GridView 的表头单元格

Posted on 2007-04-19 11:37 停留的风阅读(880) 评论(0) 编辑收藏所属分类: .NET技术

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：

<%@ 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">

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>

<head>

<title>合并 GridView 的表头单元格</title>

</head>

<body>

<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">

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)

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>

<head>

<title>合并 GridView 的表头单元格</title>

</head>

<body>

<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>

前台页面
源程序如下：
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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