用服务器端的方法

在页面上放一个gridview控件,配置好数据源,编辑列,添加一个模版列,再编辑模版,放入一个checkbox控件。代码如下:

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"
DataKeyNames="AreaID" DataSourceID="SqlDataSource1">
<Columns>
<asp:BoundField DataField="AreaID" HeaderText="AreaID" ReadOnly="True" SortExpression="AreaID" />
<asp:BoundField DataField="CityID" HeaderText="CityID" SortExpression="CityID" />
<asp:TemplateField>
<HeaderTemplate>
<asp:CheckBox ID="chkAll" runat="server" AutoPostBack="True"
OnCheckedChanged="chkAll_CheckedChanged" />
</HeaderTemplate>
<ItemTemplate>
<asp:CheckBox ID="chkItem" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>

后台cs代码

protected void chkAll_CheckedChanged(object sender, EventArgs e)
{
for (int i = 0; i < this.GridView1.Rows.Count; i++)
{
((CheckBox)GridView1.Rows[i].FindControl("chkItem")).Checked =
((CheckBox)this.GridView1.HeaderRow.FindControl("chkAll")).Checked;
}
}

用脚本实现

<asp:GridView ID="GridView1" runat="server" AllowPaging="True" AutoGenerateColumns="False"
DataKeyNames="AreaID" DataSourceID="SqlDataSource1">
<Columns>
<asp:BoundField DataField="AreaID" HeaderText="AreaID" ReadOnly="True"
SortExpression="AreaID" />
<asp:BoundField DataField="CityID" HeaderText="CityID" SortExpression="CityID" />
<asp:TemplateField>
<HeaderTemplate>
<input id="chkAll" onclick="SelectAll(this)"; type=checkbox>
</HeaderTemplate>
<ItemTemplate>
<input id="chkItem" type=checkbox>
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>

在客户端写javascript

function SelectAll(chkbox)
{
var box=chkbox;
state=theBox.checked;
elem=box.form.elements;
for(i=0;i<elem.length;i++)
if(elem[i].type=="checkbox" && elem[i].id!=box.id)
{
if(elem[i].checked!=state)
{
elem[i].click();
}
}
}