RadEditor for ASP.NET AJAX
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RadControls for ASP.NET AJAX

The XhtmlValidator dialog uses the W3C XHTML Validator Page to perform validation of the current editor content. The W3C service returns a compliancy report right within the editor dialog. This feature eliminates the need for manual copy/pasting of the HTML and validation in a separate browser window.

 

You can enable this dialog by declaring the XhtmlValidator Tool in-line, adding it to the ToolsFile.xml or defining it programmatically:

CopyASPX
<telerik:radeditor id="RadEditor1" runat="server" skin="Default">    
    <Tools>        
        <telerik:EditorToolGroup>            
            <telerik:EditorTool Name="XhtmlValidator" Text="Xhtml Validator Dialog" />        
        </telerik:EditorToolGroup>    
    </Tools>
</telerik:radeditor>
CopyXML
<root>  
    <tools name="Main" >    
        <tool name="XhtmlValidator" />  
    </tools>
</root>
CopyC#
// Remove default tools
RadEditor1.Tools.Clear();
// Create a new tool group and add to RadEditor Tools collection
EditorToolGroup group = new EditorToolGroup();
RadEditor1.Tools.Add(group);
// Create the XhtmlValidator tool and add it to the tool group
EditorTool tool = new EditorTool("XhtmlValidator");
group.Tools.Add(tool);
CopyVB.NET
' Remove default tools
RadEditor1.Tools.Clear()
' Create a new tool group and add to RadEditor Tools collection
Dim group As New EditorToolGroup()
RadEditor1.Tools.Add(group)
' Create the XhtmlValidator tool and add it to the tool group
Dim tool As New EditorTool("XhtmlValidator")
group.Tools.Add(tool)