Guide on styling Treeview with CSS

Question

Guide on styling Treeview with CSS

When attempting to print my treeview using the script below, I encountered an issue where the printed output did not include any CSS styling.

I have two specific requirements:

I would like each level of the tree to be displayed in a different color using CSS.
The treeview should be printed with the CSS styles applied.

<script type="text/javascript">
    function addSubNodes(nodes) {
        // Code for adding subnodes goes here
    }
    
    // Additional JavaScript functions for printing and handling node selection
</script>

<telerik:RadTreeView runat="server" ID="RadTreeView1" DataSourceID="ObjectDataSource1"
            DataFieldID="main_code" DataFieldParentID="father_code" DataTextField="name"
            Skin="MetroTouch">
    <DataBindings>
        <telerik:RadTreeNodeBinding Expanded="true"></telerik:RadTreeNodeBinding>
    </DataBindings>
</telerik:RadTreeView>

Sample Output from FireBug:

<ul class="rtUL rtLines">
    // Sample list items and nested nodes
</ul>

javascript asp.net css telerik treeview

Answer 1

Answer №1

When transferring the HTML to a new document, keep in mind that you may lose some styling elements. To maintain the formatting when printing, consider copying the generated HTML into a special div with its own class and applying a print CSS rule to display only this div. Below is an example code snippet that demonstrates how to show only a specific section of the page during printing while still preserving the original CSS:

<html>
<head id="Head1" runat="server">
    <title></title>
    <style type="text/css">
        div 
        {
            color: Blue;
        }
        .myPrintDiv 
        {
            display: none;
        }
        @media print
        {
            .mainContent
            {
                display: none;
            }
            .myPrintDiv
            {
                display: block;
            }
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="Scriptmanager1" runat="server" />
    <div class="mainContent">
        all the content from the main page
    </div>
    <div class="myPrintDiv">
        paste the generated HTML here to preserve page styles
    </div>
    <script type="text/javascript">
        window.onload = function () { window.print(); };
    </script>
    </form>
</body>
</html>

Answer 2

When transferring the HTML to a new document, keep in mind that you may lose some styling elements. To maintain the formatting when printing, consider copying the generated HTML into a special div with its own class and applying a print CSS rule to display only this div. Below is an example code snippet that demonstrates how to show only a specific section of the page during printing while still preserving the original CSS:

<html>
<head id="Head1" runat="server">
    <title></title>
    <style type="text/css">
        div 
        {
            color: Blue;
        }
        .myPrintDiv 
        {
            display: none;
        }
        @media print
        {
            .mainContent
            {
                display: none;
            }
            .myPrintDiv
            {
                display: block;
            }
        }
    </style>
</head>
<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="Scriptmanager1" runat="server" />
    <div class="mainContent">
        all the content from the main page
    </div>
    <div class="myPrintDiv">
        paste the generated HTML here to preserve page styles
    </div>
    <script type="text/javascript">
        window.onload = function () { window.print(); };
    </script>
    </form>
</body>
</html>

Guide on styling Treeview with CSS

Answer №1

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