asp.net Checbox在GridView中的应用实例分析

<div style="text-align: center; width: 80%">   <yxy:HkrGridView ID="tabGridView1" runat="server" AutoGenerateColumns="False" Width="100%"     OnRowDataBound="HkrGridView1_RowDataBound" OnRowCreated="HkrGridView1_RowCreated"     ShowHeader="True" AllowPaging="false" DataKeyNames="keyId" ShowFooter="false">     <Columns>       <asp:BoundField>         <ItemStyle HorizontalAlign="Center" Width="5%" />       </asp:BoundField>       <asp:TemplateField>       <ItemTemplate>       <a href='<%#DataBinder.Eval(Container.DataItem,"newName")%>' ><%#DataBinder.Eval(Container.DataItem,"oldName")%></a>       </ItemTemplate>       </asp:TemplateField>     <asp:BoundField DataField="memo">         <ItemStyle Width="20%" HorizontalAlign="left" />       </asp:BoundField>       <asp:TemplateField>         <ItemTemplate>           <asp:CheckBox ID="CheckBox" runat="server" />         </ItemTemplate>         <ItemStyle HorizontalAlign="Center" Width="5%" />       </asp:TemplateField>     </Columns>     <FooterStyle ForeColor="Red" HorizontalAlign="Center" Font-Bold="true" />   </yxy:HkrGridView>   <div id="DivOne" style="text-align: right">     <asp:CheckBox ID="CheckBoxAll" runat="server" Text="全选" Width="80px" AutoPostBack="True"       OnCheckedChanged="CheckBoxAll_CheckedChanged" />     <asp:CheckBox ID="CheckBox1" runat="server" Text="反选" Width="80px" AutoPostBack="True"       OnCheckedChanged="CheckBox1_CheckedChanged" />     <asp:Button ID="Button1" runat="server" Text="取　消" CssClass="Button" OnClick="Button1_Click" />   </div></div>

protected void HkrGridView1_RowCreated(object sender, GridViewRowEventArgs e){    if (e.Row.RowType == DataControlRowType.Header)    {      TableCellCollection tcHeader = e.Row.Cells;      tcHeader.Clear();      //第一行表头      tcHeader.Add(new TableHeaderCell());      tcHeader[0].Text = "序号<BR>No.";      tcHeader.Add(new TableHeaderCell());      tcHeader[1].Text = "附件名称";      tcHeader.Add(new TableHeaderCell());      tcHeader[2].Text = "备注";      tcHeader.Add(new TableHeaderCell());      tcHeader[3].Text = "选择</tr>";    }}protected void HkrGridView1_RowDataBound(object sender, GridViewRowEventArgs e){    GridViewRow gr = e.Row;    if (e.Row.RowIndex != -1)    {      e.Row.Cells[0].Text = (e.Row.RowIndex + 1).ToString();    }}private void HkrGridViewBind(){    string strSql = "SELECT keyId,newName, oldName, localHome,memo FROM aq_file_up WHERE (relaid = @relaid) AND (fjType = @fjType) AND (usestatus = 1)";    SqlParameter[] sps = {              new SqlParameter("@relaid",this.hdnRelaId.Value),              new SqlParameter("@fjType",this.hdnFjType.Value)               };    DataTable dt = pms.SqlHelper.ExecuteDataTable(CommandType.Text, strSql, sps);    tabGridView1.DataSource = dt;    tabGridView1.DataBind();}rotected void Button1_Click(object sender, EventArgs e){    CheckBoxAll.Checked = false;    CheckBox1.Checked = false;    for (int i = 0; i <= tabGridView1.Rows.Count - 1; i++)    {      CheckBox cb = (CheckBox)tabGridView1.Rows[i].FindControl("CheckBox");      cb.Checked = false;    }}protected void CheckBox1_CheckedChanged(object sender, EventArgs e){   for (int i = 0; i <= tabGridView1.Rows.Count - 1; i++)    {      CheckBox cb = (CheckBox)tabGridView1.Rows[i].FindControl("CheckBox");      if (cb.Checked == false)      {        cb.Checked = true;      }      else      {        cb.Checked = false;      }    }    //CheckBox1.Checked =true;    CheckBoxAll.Checked = false;}protected void CheckBoxAll_CheckedChanged(object sender, EventArgs e){   for (int i = 0; i <= tabGridView1.Rows.Count - 1; i++)    {      CheckBox cb = (CheckBox)tabGridView1.Rows[i].FindControl("CheckBox");      if (CheckBoxAll.Checked == true)      {        cb.Checked = true;      }      else      {        cb.Checked = false;      }    }    CheckBox1.Checked = false;}