<asp:GridView ID="gvProgram" runat="server" AllowPaging="True" 
    AutoGenerateColumns="False" DataKeyNames="ID" 
    DataSourceID="FileDataSource" OnDataBound="gvProgram_DataBind" 
    OnPageIndexChanging="gvProgram_PageIndexChanging" OnRowCommand="gvProgram_RowCommand" 
    Height="498px" Width="531px" PageSize="18" OnRowDataBound="gvProgram_RowDataBound"  
    >
    <PagerTemplate>
        <table width="100%">
            <tr>
                <td>
                    <asp:ImageButton ID="imageFirst" CommandName="Page"  CommandArgument="First"  runat="server"   />
                    <asp:ImageButton ID="imagePrevious" CommandName="Page" CommandArgument="Prev"  runat="server"/>&nbsp;
                    <asp:ImageButton ID="imageNext" CommandName="Page" CommandArgument="Next" runat="server" />
                    <asp:ImageButton ID="imageLast" CommandName="Page" CommandArgument="Last" runat="server"/>
           </td>
            </tr>
        </table>      
    </PagerTemplate>
    <Columns>
        <asp:BoundField DataField="FileName" HeaderText="标题" >
        </asp:BoundField>
        <asp:BoundField DataField="FileSize" HeaderText="文件大小">
        </asp:BoundField>
    </Columns>
</asp:GridView>
<asp:ObjectDataSource ID="FileDataSource" runat="server" 
    SelectMethod="GetListByFileTypeAndHost" TypeName="BLLFile">
    <SelectParameters>
        <asp:Parameter DefaultValue="02" Name="fileType" Type="String" />
        <asp:Parameter DefaultValue="00" Name="host" Type="String" />
    </SelectParameters>
</asp:ObjectDataSource>

      protected void gvProgram_RowDataBound(object sender, GridViewRowEventArgs e)
        {
            if (e.Row.RowType == DataControlRowType.DataRow)
            {
                // 计算自动填充的行数
                numCount++;
            }
            if (e.Row.RowType == DataControlRowType.Footer)
            {
                // 计算完毕，在此添加缺少的行
                int toLeft = this.gvProgram.PageSize - numCount;
                int numCols = this.gvProgram.Rows[0].Cells.Count;
                DataControlRowState rowState = (this.gvProgram.Rows[numCount - 1].RowState);

                for (int i = 0; i < toLeft; i++)
                {
                    // 正确显示交叉行样式
                    rowState = (i % 2 != 0) ? DataControlRowState.Alternate : DataControlRowState.Normal;

                    GridViewRow row = new GridViewRow(-1, -1, DataControlRowType.EmptyDataRow, rowState);
                    for (int j = 0; j < numCols; j++)
                    {
                        TableCell cell = new TableCell();
                        cell.Text = "&nbsp;";
                        row.Cells.Add(cell);
                    }
                    this.gvProgram.Controls[0].Controls.AddAt(numCount + 1 + i, row);
                }
            }
        }

  protected void gvProgram_PageIndexChanging(object sender, GridViewPageEventArgs e)