GridView中实现树形结构分组的功能

    GridView中实现树形结构的实现方法简单,使用javascript实现。先看一下截图:

节点展开情况

节点合并情况:

 

下面说下实现方法:

aspx页面:

 

 

<body>
    <form id="form1" runat="server">
    <div id="main">
        <fieldset>
            <legend>GridView中树形结构实现</legend>
            <asp:GridView ID="gvList" runat="server" AutoGenerateColumns="false" CssClass="grid"
                DataKeyNames="ID,PID,Level,HasChild" TreeColumnIndex="0" OnRowDataBound="gvList_RowDataBound">
                <Columns>
                    <asp:BoundField HeaderText="名称" DataField="Name" HeaderStyle-BackColor="#23f90d" HeaderStyle-Width="150"></asp:BoundField>
                    <asp:BoundField HeaderText="编号" DataField="ID"  HeaderStyle-BackColor="#23f90d">
                        <ItemStyle HorizontalAlign="Center" Width="80"></ItemStyle>
                    </asp:BoundField>
                    <asp:BoundField HeaderText="编码" DataField="Code"  HeaderStyle-BackColor="#23f90d">
                        <ItemStyle HorizontalAlign="Center" Width="80"></ItemStyle>
                    </asp:BoundField>
                </Columns>
                <EmptyDataTemplate>
                    <div class="tip">
                        暂无记录!<input type="button" onclick="add()" class="btnGrid" value="新增功能点" /></div>
                </EmptyDataTemplate>
            </asp:GridView>
        </fieldset><asp:HiddenField runat="server" ID="hfAimID"></asp:HiddenField>
    </div>
    </form>

    <script type="text/javascript">
        //树节点相关控制
        <!--
        function hideChildren(node) {
            var level = parseInt(node.getAttribute("level"));
            var nextNode = node.nextSibling;
            while (nextNode != null && parseInt(nextNode.getAttribute("level")) > level) {
                nextNode.style.display = "none"; nextNode = nextNode.nextSibling;               
            }
        }
        function showChildren(node) {
            var level = parseInt(node.getAttribute("level"));
            var id = node.getAttribute("id");
            var nextNode = node.nextSibling;
            while (nextNode != null && parseInt(nextNode.getAttribute("level")) > level) {
                if (nextNode.getAttribute("pid") == id) {
                    if (node.getAttribute("expand") == "1") {
                        nextNode.style.display = "";
                        showChildren(nextNode);
                    }
                    else {
                        nextNode.style.display = "none";
                    }
                }
                nextNode = nextNode.nextSibling;
            }
        }
        function setExpand(sender) {
            var curNode = sender.parentNode.parentNode;
            if (curNode.getAttribute("expand") == "1") {
                curNode.setAttribute("expand""0");
                sender.src = "maximize.gif";
                hideChildren(curNode);
            }
            else {
                curNode.setAttribute("expand""1");
                sender.src = "minimize.gif";
                showChildren(curNode);
            }
        } 
        //-->
    </script>

 

 

主要是脚本中的实现。

 

后台代码中主要是行呈现处理的实现,代码如下:

 

View Code
if (e.Row.RowType == DataControlRowType.DataRow)
            {
                # region 生成树形结构
                string id = gvList.DataKeys[e.Row.RowIndex]["ID"].ToString();
                string pid = gvList.DataKeys[e.Row.RowIndex]["PID"].ToString();
                string level = gvList.DataKeys[e.Row.RowIndex]["Level"].ToString();
                //增加节点的属性
                e.Row.Attributes.Add("id", id);
                e.Row.Attributes.Add("pid", pid);
                e.Row.Attributes.Add("level", level);
                e.Row.Attributes.Add("expand""1");
                int indent = (int.Parse(level) - 1) * 20;
                //判断是否有子节点
                if (gvList.DataKeys[e.Row.RowIndex]["HasChild"].ToString() == "1")
                {
                    //设置父节点前面的图片和点击事件
                    HtmlImage img = new HtmlImage();
                    img.Src= TreeImagePath + "minimize.gif";
                    img.Attributes.Add("onclick""setExpand(this)");
                    img.Style.Add("cursor""pointer");
                    e.Row.Cells[0].Controls.Add(img);
                    e.Row.Cells[0].Style["font-weight"] = "bold";
                }
                else
                {
                    indent += 16;
                }
                e.Row.Cells[0].Style["padding-left"] = indent + "px";
                e.Row.Cells[0].Controls.Add(new LiteralControl(e.Row.Cells[0].Text));
                # endregion
                e.Row.Attributes["onmouseover"] = "style.backgroundColor='#F2FDDB'";
                e.Row.Attributes["onmouseout"] = "style.backgroundColor=''";
            }

 

源代码下载: GridViewTreeView.rar 

 

posted @ 2012-05-11 10:51  ☆会飞的鱼☆  阅读(7514)  评论(4编辑  收藏  举报