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GridView中CheckBox的用法
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以下是我在GridView中控制CheckBox的全选/取消全选，根据子CheckBox处理全选CheckBox状态的操作并获取所选GridView中所选行的列的值。
脚本代码：
<script language="javascript" type="text/javascript">
//全选/全取消GridView中的CheckBox
//参数gv: GridView的ID
//参数input2: 功能控件ID（全选CheckBox）
function CheckAll(gv,input2)
{
var objForm = document.getElementById(gv);
var objLen = objForm.rows.length;
for (var iCount = 0; iCount < objLen; iCount++)
{
objForm.rows[iCount].cells[0].getElementsByTagName("INPUT")[0].checked = input2.checked;
}
}
function CheckSelect(gv,input2)
{
if (input2.checked == true)
{
if(GetCheckBoxCount(gv) == GetCheckedBoxCount(gv))
{
form1.Checkbox3.checked = true;
}
}
else
{
form1.Checkbox3.checked = false;
}
}
function GetCheckBoxCount(gv)
{
var objForm = document.getElementById(gv);
var objLen = objForm.rows.length;
return (objLen-1);
}
function GetCheckedBoxCount(gv)
{
var count;
count = 0;
var objForm = document.getElementById(gv);
var objLen = objForm.rows.length;
for(var iCount = 0; iCount < objLen; iCount++)
{
if(objForm.rows[iCount].cells[0].getElementsByTagName("INPUT")[0].checked == true)
{
count ++;
}
}
return count;
}
</script>
页面代码：
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False"
DataSourceID="LinqDataSource1" DataKeyNames="CarID">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="CheckBox2" runat="server" Width="20px" onclick="CheckSelect('GridView1',this)"/>
</ItemTemplate>
<HeaderTemplate>
<input ID="Checkbox3" type="checkbox" style="width:20px" onclick="CheckAll('GridView1',this)"/>
</HeaderTemplate>
<ItemStyle Width="20px" />
</asp:TemplateField>
<asp:BoundField DataField="CarID" HeaderText="CarID" ReadOnly="True"
SortExpression="CarID" />
</Columns>
</asp:GridView>
<br />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" />
<br />
<asp:LinqDataSource ID="LinqDataSource1" runat="server"
ContextTypeName="DBML.CarDataContext" Select="new (CarID, TeamID, DriverID)"
TableName="CarInfo">
</asp:LinqDataSource>
</div>
</form>
< /body>
cs文件代码：
protected void Button1_Click(object sender, EventArgs e)
{
int count = 0;
string items = "";
foreach (GridViewRow item in GridView1.Rows)
{
CheckBox cb = (CheckBox)item.FindControl("CheckBox2");
if (cb.Checked)
{
items = items + item.Cells[1].Text;//已选行的第2列的值
count++;
}
}
Response.Write(count.ToString() + items);
}
以上代码可能通用性还有待增强，也希望对大家有所帮助。谢谢！
