DataGrid 实现批量删除

今天做了一个批量删除的功能,有很多东西都还是不明确的呀.原理是清楚的,但实现起来有点问题呀.在朋友的帮助处终于实现了。可以多选，并取消多选。希望在这里和大家分享一下：

HTML代码

 

  // 判断多选是否与选中项（没有选中的返回false）
    function slcNo_click()
    {
        if (document.form1.checkboxname.length)
        {
            for (var i=0;i<document.form1.checkboxname.length;i++)
            {
                if(document.form1.checkboxname[i].checked)
                {
                    return true;
                }
            }
        }
        else
        {
            if(document.form1.checkboxname.checked)
            {
                return true;
            }
        }
        alert("请选择后再操作！");
        return false;
    }
 
    // 多选的全选与取消
    function CheckJs(boolvalue)
    {
        if(document.all.checkboxname.length>1)
        {
            for(var i=0;i<document.all.checkboxname.length;i++)
            {
                document.all.checkboxname[i].checked = boolvalue;            
            }
        }
        else
            document.all.checkboxname.checked = boolvalue;
    }
    //
    
    // 只有全部选中时,“全选”选中
    function SingleCheckJs()
    {
        var flag1=false;
        var flag2=false;
        
        if (document.form1.checkboxname.length)
        {
            for (var i=0;i<document.form1.checkboxname.length;i++)
            {
                if(document.form1.checkboxname[i].checked)
                    flag1 = true;
                else
                    flag2 = true;
            }
        }
        else
        {
            if(document.form1.checkboxname.checked)
                flag1 = true;
            else
                flag2 = true;
        }
        
        if(flag1==true&&flag2==false)
            document.getElementById("chk").checked = true;
        else
            document.getElementById("chk").checked = false;
    }

        </script>


<asp:TemplateColumn HeaderText="标题">
                                                <HeaderStyle HorizontalAlign="Center" Width="260px"></HeaderStyle>
                                                <HeaderTemplate>
                                                    <input type="CheckBox" id="chk" name="chk" onclick="CheckJs(this.checked)"> 全选
                                                </HeaderTemplate>
                                                <ItemTemplate>
                                                    <input type="checkbox" id="checkboxname" name="checkboxname" value='<%#DataBinder.Eval(Container.DataItem,"NewsID")%> ' onclick='SingleCheckJs();'/>
                                                                        <%...# GetContent(DataBinder.Eval(Container.DataItem,"Title").ToString())%>
                                                        </font></a>
                                                </ItemTemplate>
                                            </asp:TemplateColumn>

 

后台代码

 

//执行批量删除
        private void btnDelete_Click(object sender, System.EventArgs e)
        ...{    
            string str = "";
            string[] ckb = null;
            str = Request.Form.Get("checkboxname");
            
                ckb = str.Split(new char[] ...{ ',' });            
                for (int i = 0; i < ckb.Length; i++)
                ...{
                    try
                    ...{
                        Delete(Convert.ToInt32(ckb[i]));
                    }
                    catch (Exception ex)
                    ...{                    
                        Response.Write(Pad.PadCommon.Func.Error.ErrorString(ex.Message.ToString(),"1"));
                    }
                }
            
            GridDataBind(this.listNewsType.SelectedValue.ToString(),Convert.ToInt32(this.ListStatus.SelectedValue.ToString()));
        }