对带有Checkbox的DataGrid数据删除确认操作

有2种方法：一种是在客户端判断，另一是在服务端判断

在客户端判断
(1)脚本

            <asp:DataGrid id="DataGrid1" runat="server" AutoGenerateColumns="False" Width="472px">
                <Columns>
                    <asp:TemplateColumn>
                        <ItemTemplate>
                            <asp:CheckBox id="Checkbox2" runat="server"></asp:CheckBox>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                    <asp:BoundColumn DataField="LastName" HeaderText="LastName"></asp:BoundColumn>
                    <asp:BoundColumn DataField="FirstName" HeaderText="FirstName"></asp:BoundColumn>
                </Columns>
            </asp:DataGrid>
            <asp:Button id="Button1" runat="server" Text="Button"></asp:Button>

(2)JavaScript
 

        <script language="javascript">
        function SelCount()
        {
            var sum = 0;
            var RowCount = <%=RowCount%>;//document.all.DataGrid1.rows.length;
            for(j= 1;j<RowCount+1;j ++ )
            {
                if(typeof(document.all.DataGrid1.rows(j).cells(0).children(0)) == "object")
                {
                    if( document.all.DataGrid1.rows(j).cells(0).children(0).checked == true )
                    {
                     sum = sum +1;
                    }            
                }
            }
            if( sum >0)
            {
                return window.confirm("确定删除么？");
            }
            else
            {
                var message = "请选择要删除的数据！";
                window.alert( message );
                return false;
            }
        }
        </script>

(3)代码

        public int RowCount;
             private void Page_Load(object sender, System.EventArgs e)
        {
            //页面初试化时进行数据绑定
            if(!IsPostBack)
            {
                DataGridDataBind();
            }
            Button1.Attributes.Add("onclick","return SelCount();");
        }

        private void Button1_Click(object sender, System.EventArgs e)
        {
            //执行删除操作
            DataGridDataBind();
        }

DataGridDataBind是数据绑定方法，在这个方法中要RowCount 赋行数值

在服务端判断
(1)脚本

            <asp:DataGrid id="DataGrid1" runat="server" AutoGenerateColumns="False" Width="472px">
                <Columns>
                    <asp:TemplateColumn>
                        <ItemTemplate>
                            <asp:CheckBox id="Checkbox2" runat="server"></asp:CheckBox>
                        </ItemTemplate>
                    </asp:TemplateColumn>
                    <asp:BoundColumn DataField="LastName" HeaderText="LastName"></asp:BoundColumn>
                    <asp:BoundColumn DataField="FirstName" HeaderText="FirstName"></asp:BoundColumn>
                </Columns>
            </asp:DataGrid>
            <asp:Button id="Button1" runat="server" Text="Button"></asp:Button>
            <input type="button" id="btnRemove" runat="server" value="Delete" style="DISPLAY:none">

(2)JavaScript

<script language="javascript">
            function DeleteItems(msg)
            {
                if(!confirm(msg))
                {
                    return;
                }
                else
                {
                    __doPostBack('btnRemove','');                
                }
            }
        </script>

(3)代码

        private void Page_Load(object sender, System.EventArgs e)
        {
            //页面初试化时进行数据绑定
            if(!IsPostBack)
            {
                DataGridDataBind();
            }
        }

        private void Button1_Click(object sender, System.EventArgs e)
        {
            //判断是否有选中 如果有选中的数据
            Page.RegisterStartupScript( "Delete", "<script>DeleteItems('你确认要删除么？');</script>" ); 
        }

        private void btnRemove_ServerClick(object sender, System.EventArgs e)
        {
            //执行删除操作
            DataGridDataBind();
        }