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;
}