重画dataGrid表头的方法

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如果要调用此函数，必须在html中，<asp:datagrid>中添加如下代码：OnItemCreate="myGrid_itemCreat"

如：<asp:datagrid OnItemCreated="myGrid_itemCreat">

#region 调整表头的宽度 myGrid_itemCreat()
  public void myGrid_itemCreat(object sender,System.Web.UI.WebControls.DataGridItemEventArgs e)
  {
   if(e.Item.ItemType==ListItemType.Header)
   {
    TableCellCollection tc=e.Item.Cells;
    tc.Clear();

    #region 前面列的处理
    tc.Add(new TableHeaderCell());
    tc[0].Text="xxxx";
    tc[0].ColumnSpan=1;
    tc[0].RowSpan = 2;
    tc[0].Wrap=false;

    tc.Add(new TableHeaderCell());
    tc[1].Text="xxxx";
    tc[1].ColumnSpan=2;
    tc[1].RowSpan = 1;
    tc[1].Wrap=false;

    tc.Add(new TableHeaderCell());
    tc[2].Text="xxxx";
    tc[2].ColumnSpan=2;
    tc[2].RowSpan =1;
    tc[2].Wrap=false;

    tc.Add(new TableHeaderCell());
    tc[3].Text="xxxx";
    tc[3].ColumnSpan=2;
    tc[3].RowSpan = 1;
    tc[3].Wrap=false;

    tc.Add(new TableHeaderCell());
    tc[4].Text="xxxx";
    tc[4].ColumnSpan=2;
    tc[4].RowSpan = 1;
    tc[4].Wrap=false;

    tc.Add(new TableHeaderCell());
    tc[5].Text="xxxx";
    tc[5].ColumnSpan=2;
    tc[5].RowSpan = 1;
    tc[5].Wrap=false;

    tc.Add(new TableHeaderCell());
    tc[6].Text="xxxx";
    tc[6].ColumnSpan=2;
    tc[6].RowSpan = 1;
    tc[6].Wrap=false;

tc.Add(new TableHeaderCell());
 tc[7].Text="xxxx";
 tc[7].ColumnSpan=2;
 tc[7].RowSpan = 1;
 tc[7].Wrap=false;
 #endregion

 #region 关键处理
 tc.Add(new TableHeaderCell());
 tc[8].ColumnSpan=2;
 tc[8].RowSpan = 1;

 tc[8].Text="xxxx</tr>";
 tc[8].Text+="<tr><td align=center rowspan='1' colspan='1' bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center colspan='1' rowspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center rowspan='1' colspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center colspan='1' rowspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center rowspan='1' colspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center colspan='1' rowspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center rowspan='1' colspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center colspan='1' rowspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center rowspan='1' colspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center colspan='1' rowspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center rowspan='1' colspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center colspan='1' rowspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center rowspan='1' colspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center colspan='1' rowspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center rowspan='1' colspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td>";
 tc[8].Text+="<td align=center colspan='1' rowspan='1' valign=middle bgcolor='#337FB2' nowrap>xxxx</td></tr>";

 #endregion
 }
 }
 #endregion

dataGrid的表头，其实就是与table的画法别无二致...