ASP.NET 2.0中GridView無限層複雜表頭的實現

來源:互聯網
上載者:User

  實現方法就是給儲存格填補值我們想要的格式代碼。

   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">
  // 計算資料,完全可以從資料看取得
  ICollection CreateDataSource( )
  {
    System.Data.DataTable dt = new System.Data.DataTable();
    System.Data.DataRow dr;
    dt.Columns.Add(new System.Data.DataColumn("學生班級", typeof(System.String)));
    dt.Columns.Add(new System.Data.DataColumn("學生姓名", typeof(System.String)));
    dt.Columns.Add(new System.Data.DataColumn("語文", typeof(System.Decimal)));
    dt.Columns.Add(new System.Data.DataColumn("數學", typeof(System.Decimal)));
    dt.Columns.Add(new System.Data.DataColumn("英語", typeof(System.Decimal)));
    dt.Columns.Add(new System.Data.DataColumn("電腦", typeof(System.Decimal)));

    for (int i = 0; i < 8; i++)
    {
      System.Random rd = new System.Random(Environment.TickCount * i); ;
      dr = dt.NewRow();
      dr[0] = "班級" + i.ToString();
      dr[1] = "學生" + 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)
    {
      //建立一個GridViewRow,相當於表格的 TR 一行
      GridViewRow rowHeader = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Normal);
      string HeaderBackColor = "#EDEDED";
      rowHeader.BackColor = System.Drawing.ColorTranslator.FromHtml(HeaderBackColor);

      //實現確定要顯示的表頭樣式,也可以通過計算產生

      //    <tr>
      //      <td rowspan='2'>關鍵儲存格</td>
      //      <td colspan='2'>表頭文字</td>
      //      <td colspan='2'>表頭文字</td>
      //      <td>表頭文字</td>
      //      </tr>
      //      <tr bgcolor='#FFF'>
      //      <td colspan='2'>表頭文字</td>
      //      <td rowspan='2'>表頭文字</td>
      //      <td colspan='2'>表頭文字</td>
      //      </tr>
      //      <tr bgcolor='#FFF'>
      //      <td>表頭文字</td>
      //      <td>表頭文字</td>
      //      <td>表頭文字</td>
      //      <td>表頭文字</td>
      //      <td>表頭文字</td>";
      //   </tr>
      // 上面的樣式可以設定斜線

      Literal newCells = new Literal();
      newCells.Text = @"表頭文字1</th>
                  <th colspan='2'>表頭文字2</th>
                  <th colspan='2'>表頭文字3</th>
                  <th>表頭文字4</th>
                  </tr>
                  <tr bgcolor='" + HeaderBackColor + "'>";
      newCells.Text += @"                        
                  <th colspan='2'>表頭文字5</th>
                  <th rowspan='2'>表頭文字6</th>
                  <th colspan='2'>表頭文字7</th>
                  </tr>
                  <tr bgcolor='" + HeaderBackColor + "'>";
      newCells.Text += @" 
                  <th>表頭文字8</th>
                  <th>表頭文字9</th>
                  <th>表頭文字10</th>
                  <th>表頭文字11</th>
                  <th>表頭文字12";

      TableCellCollection cells = e.Row.Cells;
      TableHeaderCell headerCell = new TableHeaderCell();
      //下面的屬性設定與 <td rowspan='2'>關鍵儲存格</td> 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");
    }
  }
 
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title>為 GridView 添加多層表頭</title>
</head>
<body>
  <form id="Form1" runat="server">
    <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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