一个关于ASP.NET的问题

Question

页面上放了一个Gridview控件,第一列用的是CheckBox 我想实现选一个全选按钮 就都选上的效果 然后删除一起删除 还有正选 反选 希望高手们贴出代码 或者发我邮箱[email protected]  或[email protected] 感激不尽

Answer 1

去51下吧。http://www.51aspx.com/

Answer 2

<script>
function SelectAll(id)
{
    var gv = document.getElementById("GridView1");
    var bs = gv.getElementsByTagName("input");
    for(var i=0;i<bs.length;i++)
    {
        if(bs[i].type=="checkbox")
        {
            bs[i].checked=id.checked;
           
        }
    }
}
</script>//调用
 <asp:GridView ID="GridView1" runat="server" >
            <Columns>
                <asp:TemplateField HeaderText="全选">
                    <HeaderTemplate>
                        <asp:CheckBox ID="CheckBox1" runat="server" onclick="javascript:SelectAll(this);"/>
                    </HeaderTemplate>
                    <ItemTemplate>
                        <asp:CheckBox ID="CheckBox2" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>

Answer 3

 <asp:GridView ID="GridView1" runat="server" >
            <Columns>
                <asp:TemplateField HeaderText="全选">
                    <HeaderTemplate>
                        <asp:CheckBox ID="CheckBox1" runat="server" oncheckedchanged="CheckBox1_CheckedChanged" />
                    </HeaderTemplate>
                    <ItemTemplate>
                        <asp:CheckBox ID="CheckBox2" runat="server" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
   protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
        {
            Checkbox cbAll = sender as Checkbox;
            for (int i = 0; i < GridView1.Rows.Count; i++)
            {
                Checkbox cb = (Checkbox)GridView1.Rows[i].FindControl("CheckBox2");
                cb.Checked = cbAll.Checked;
            }
        }
//PS:这是后台实现的，我个人还是推荐用JS实现全选的方法,顶2L

Answer 4

3L的    <asp:CheckBox ID="CheckBox1" runat="server" oncheckedchanged="CheckBox1_CheckedChanged" autopostback="true" />

Answer 5

复选框全选
<script language="javascript" type="text/javascript">
        function selectAll(chkbox)
        {   var box = chkbox;
        oState = box.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 != oState)
        {
        elem[i].click();
        }
        }
        }
        } 
</script><asp:CheckBox ID="chkAll" runat="server" onclick="selectAll(this);" Text="全选" />后台读取操作
 protected void lbtnDel_Click(object sender, EventArgs e)
    {
        bool state = false;
        CheckBox chb;
        int row = gvNews.Rows.Count;
        for (int i = 0; i < row; i++)
        {
            chb = (CheckBox)gvNews.Rows[i].Cells[0].FindControl("chkDel");
            if (chb.Checked == true)
            {                
                int NewId = Convert.ToInt32(gvNews.DataKeys[i].Value);             
                cManager.Delete(NewId);//删除选择项
                state = true;
            }
        }
        if (state == true)
        {
            Utility.Show(Page, "删除成功！");
         }
        else
        {
            Utility.Show(Page, "请选择删除项！");
        }
    }