js 指定GridView全选，单选

JS：

  
//判定是单选还是全选
var isMulti = "<% =Request.QueryString["mode"]%>";
 //全选
        function selectAll(ctlName, bool) {
            var ctl = document.getElementById(ctlName);
            var checkbox = ctl.getElementsByTagName('input'); 
            for (var i = 0; i < checkbox.length; i++) {
                if (checkbox[i].type == 'checkbox') {
                    checkbox[i].checked = bool;
                }
            }
        }
    var ClickNum=0;//判断同一checkbox连续点击次数  
    var PreCheckboxID="";//记录点击checkbox的ID  
    //listId为控制checkbox的范围  
    //SelectRadio是点击checkbox自己  
    function SelectRadio(listId,SelectRadio)  
    {  
    if(isMulti == "")
    {
        ///判断是否连击同一个checkbox  
        if(PreCheckboxID==SelectRadio.id)  
        {  
            ClickNumClickNum = ClickNum + 1;  
        }  
        else  
        {  
            PreCheckboxID = SelectRadio.id;  
            ClickNum = 0;  
        }  
        //找到控制范围  
        var GridViewtableSearchList = document.getElementById(listId);  
        //找到控制范围下所有input  
        var objs = GridViewtableSearchList.getElementsByTagName("input");  
        //找到控制范围下所有checkbox并都变为false  
        for(var i = 0; i < objs.length; i++)   
        {  
            if(objs[i].type.toLowerCase() == "checkbox" )  
            objs[i].checked = false;  
        }  
        var SelectRadioSelectRadioID = SelectRadio.id;  
        //如果连击次数为奇次checked为true偶次为false  
        if(ClickNum%2!=1)  
        {  
            document.getElementById(SelectRadioSelectRadioID).checked = true;  
        }  
        else  
        {  
            document.getElementById(SelectRadioSelectRadioID).checked = false;  
        }
        
     } 
    } 

　　

html

 <asp:GridView ID="MainList" runat="server" AutoGenerateColumns="False" CssClass="DIVGrid"
            DataKeyNames="UG_ID" CellPadding="2" EmptyDataText="没有记录!" Width="520px" OnPageIndexChanging="MainList_PageIndexChanging">
            <Columns>
                <asp:TemplateField>
                    <HeaderTemplate>
                        <asp:CheckBox runat="server" ID="cbHead" onclick="javascript:selectAll('MainList',this.checked);"
                            Text="选择"></asp:CheckBox>
                    </HeaderTemplate>
                    <ItemTemplate>
                        <asp:CheckBox runat="server" ID="cbItem"  onclick="javascript:SelectRadio('MainList',this);">
                        </asp:CheckBox>
                    </ItemTemplate>
                    <HeaderStyle HorizontalAlign="Center" Width="60px" />
                    <ItemStyle HorizontalAlign="Center" />
                </asp:TemplateField>
                <asp:BoundField DataField="UG_Name" HeaderText="部门">
                    <HeaderStyle HorizontalAlign="Center" Width="60" />
                </asp:BoundField>
            </Columns>
        </asp:GridView>