or
2 answers
20 views
Hello,
One of our customers reported that they are trying to enhance the security features for file uploads in RadFileExplorer, Document Manager, and Image Manager. Specifically, for SVG files, they want to inspect the file contents for any embedded JavaScript functions. If the file is deemed unsafe, the upload should fail, and an error message should be displayed to the end user.
We have implemented the necessary backend validation and are able to throw an error message. However, we have not found a way to display this error message in the UI. Is there a recommended approach for implementing error message display in this scenario?
Thanks,
Lan
Rumen
Telerik team
answered
on
02 Jun 2025
1 answer
21 views
In my Standalone Image manager I encounter the following: When using StandAlone.AdditionalQueryString = "&PreselectedItemUrl=xxxxxxxx" in combination with File Explorer paging the correct image is not selected. Is there any workaround for this?
Thanks,
Marc
Rumen
Telerik team
updated answer
on
12 May 2025
1 answer
29 views
Hi,
I'm using RadFileExplorer in a project that includes file version control. Occasionally, when attempting to save a new version of a file, I receive the alert:
"A file with a name same as the target already exists!"
This issue seems inconsistent — it doesn't appear limited to a specific file type, but I've noticed it more frequently with image files or files that have numbers in their names.
I came across a possible solution in this File Explorer as a Version Control issues. in UI for ASP.NET AJAX | Telerik Forums, where it was suggested to modify the GetFIle method to always return null. Here's the method :
{
string virtualPath = RemoveProtocolNameAndServerName(url);
string physicalPath = this.GetPhysicalFromVirtualPath(virtualPath);
if (physicalPath == null)
return null;
if (!File.Exists(physicalPath))
{
return null;
}
return File.OpenRead(physicalPath);
}
if it is okay to overriding this method to always return null? Is it a safe and recommended approach to prevent the "file already exists" error in version control scenarios?
Rumen
Telerik team
answered
on
06 May 2025
1 answer
24 views
I'm trying to add a alert inside the FileStore method in Telerik's File Explorer, but it's not working as expected. Here's my implementation:
public override string StoreFile(UploadedFile file, string path, string name, params string[] arguments)
{
string physicalPath = this.GetPhysicalFromVirtualPath(path);
if (physicalPath == null)
return string.Empty;
Directory.CreateDirectory(physicalPath);
// sanitize the file name
name = (name.Replace(" ", "_")).Replace("'", string.Empty);
physicalPath = PathHelper.AddEndingSlash(physicalPath, '\\') + name;
string fileName = Path.GetFileName(physicalPath);
string folderPath = Path.GetDirectoryName(physicalPath);
FileStorageManager fileStorageManager = new FileStorageManager();
FileStorageInformation fileInfo = fileStorageManager.GetFileByFolderAndFileName(_applicationID, folderPath, fileName);
string fileFolderRelativeToRoot = path;
string rootToThisContext = path;
string message = null;
if (File.Exists(physicalPath))
{
bool isVersioningDisabledOnDestination = false;
UploadingHandler uploadingHandler = new UploadingHandler();
uploadingHandler.ExecuteAction(fileInfo, fileName, fileFolderRelativeToRoot, rootToThisContext, _applicationID, _formID, _userID, ref isVersioningDisabledOnDestination);
if (isVersioningDisabledOnDestination)
{
message = string.Format("Can not upload - versioning not enabled on target folder");
}
}
if(message == null)
{
file.SaveAs(physicalPath);
return PathHelper.AddEndingSlash(path, '/') + name;
}
else
{
return message;
}
}
public override string StoreFile(UploadedFile file, string path, string name, params string[] arguments)
{
string physicalPath = this.GetPhysicalFromVirtualPath(path);
if (physicalPath == null)
return string.Empty;
Directory.CreateDirectory(physicalPath);
// sanitize the file name
name = (name.Replace(" ", "_")).Replace("'", string.Empty);
physicalPath = PathHelper.AddEndingSlash(physicalPath, '\\') + name;
string fileName = Path.GetFileName(physicalPath);
string folderPath = Path.GetDirectoryName(physicalPath);
FileStorageManager fileStorageManager = new FileStorageManager();
FileStorageInformation fileInfo = fileStorageManager.GetFileByFolderAndFileName(_applicationID, folderPath, fileName);
string fileFolderRelativeToRoot = path;
string rootToThisContext = path;
string message = null;
if (File.Exists(physicalPath))
{
bool isVersioningDisabledOnDestination = false;
UploadingHandler uploadingHandler = new UploadingHandler();
uploadingHandler.ExecuteAction(fileInfo, fileName, fileFolderRelativeToRoot, rootToThisContext, _applicationID, _formID, _userID, ref isVersioningDisabledOnDestination);
if (isVersioningDisabledOnDestination)
{
message = string.Format("Can not upload - versioning not enabled on target folder");
}
}
if(message == null)
{
file.SaveAs(physicalPath);
return PathHelper.AddEndingSlash(path, '/') + name;
}
else
{
return message;
}
}
Rumen
Telerik team
answered
on
28 Mar 2025
2 answers
307 views
I am getting error "You are trying to navigate to a non-existing folder or you do not have proper permissions to view this folder.
Please, contact the administrator." in my production environment. It is happening randomly.
Thanks.
Fit2Page
Top achievements
Rank 2
Bronze
Iron
Iron
Rank 2
Bronze
Iron
Iron
answered
on
11 Mar 2025
2 answers
34 views
I am able to drag and drop a message from old Outlook into Telerik File Explorer, but I can not do that in new Outlook. I am not sure if Telerik File Explore support that. And does Telerik File Explore support copy paste out look messages.
Rumen
Telerik team
answered
on
23 Jan 2025
4 answers
60 views
I try to use
<telerik:RadFileExplorer ID="RadFileExplorer1" Runat="server" EnableEmbeddedSkins="True"InitialPath="\\network\EL00394132">
<Configuration ViewPaths="\\network\EL00394132"
DeletePaths="\\network\EL00394132"
UploadPaths="\\network\EL00394132" SearchPatterns="*.*"/>
</telerik:RadFileExplorer>
access a network shared folder by creating my own FileBrowserContentProvider
this.RadFileExplorer1.Configuration.ContentProviderTypeName = typeof(Extensions.NetworkShareProvider).AssemblyQualifiedName;It can view files
But when I try to upload a file
After click Upload button, it triggers my own FileBrowserContentProvider class
but no files are being uploaded, then get an error
it dose not trigger
How to fix? Please help !
Rumen
Telerik team
answered
on
22 Nov 2024
1 answer
65 views
When I try to open a file I'd like to be able to click on a link to an Excel file and have it open directly in Excel on my computer, without any intermediate popup windows. Is this possible? or download to local?
Rumen
Telerik team
answered
on
22 Nov 2024
1 answer
52 views
How to make this "Drop Files Here" zone bigger?
![]()
![]()
Rumen
Telerik team
answered
on
22 Nov 2024
1 answer
86 views
When try upload file/image i got error "check image"
<telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
<telerik:RadEditor ID="RadEditor1" runat="server" SkinID="BasicSetOfTools" Height="500px"
ContentFilters="DefaultFilters,PdfExportFilter" ContentAreaMode="Div" NewLineMode="Br, P" ExternalDialogsPath="~/EditorDialogs" EnableResize="False"><ExportSettings OpenInNewWindow="True"></ExportSettings><Tools><telerik:EditorToolGroup Tag="MainToolbar"><telerik:EditorTool Name="XhtmlValidator" /><telerik:EditorTool Name="PageProperties" /><telerik:EditorTool Name="StyleBuilder" /><telerik:EditorTool Name="TrackChangesDialog" /><telerik:EditorTool Name="FormatCodeBlock" /><telerik:EditorSeparator /><telerik:EditorTool Name="InsertImage" /><telerik:EditorTool Name="InsertLink" /><telerik:EditorTool Name="InsertTableLight" /><telerik:EditorSeparator /><telerik:EditorToolStrip Name="InsertFormElement"></telerik:EditorToolStrip><telerik:EditorTool Name="InsertFormForm" /><telerik:EditorTool Name="InsertFormButton" /><telerik:EditorTool Name="InsertFormCheckbox" /><telerik:EditorTool Name="InsertFormHidden" /><telerik:EditorTool Name="InsertFormPassword" /><telerik:EditorTool Name="InsertFormRadio" /><telerik:EditorTool Name="InsertFormReset" /><telerik:EditorTool Name="InsertFormSelect" /><telerik:EditorTool Name="InsertFormSubmit" /><telerik:EditorTool Name="InsertFormTextarea" /><telerik:EditorTool Name="InsertFormText" /><telerik:EditorSeparator /><telerik:EditorTool Name="StripAll" /><telerik:EditorTool Name="StripCss" /><telerik:EditorTool Name="StripFont" /><telerik:EditorTool Name="StripSpan" /><telerik:EditorTool Name="StripWord" /></telerik:EditorToolGroup><telerik:EditorToolGroup Tag="InsertToolbar"><telerik:EditorTool Name="ImageManager" ShortCut="CTRL+M" /><telerik:EditorTool Name="ImageMapDialog" /><telerik:EditorSeparator /><telerik:EditorTool Name="FlashManager" /><telerik:EditorTool Name="MediaManager" /><telerik:EditorTool Name="InsertExternalVideo" /><telerik:EditorSeparator /><telerik:EditorTool Name="DocumentManager" /><telerik:EditorTool Name="TemplateManager" /><telerik:EditorSeparator /><telerik:EditorToolStrip Name="InsertTable"></telerik:EditorToolStrip><telerik:EditorTool Name="InsertRowAbove" /><telerik:EditorTool Name="InsertRowBelow" /><telerik:EditorTool Name="DeleteRow" /><telerik:EditorTool Name="InsertColumnLeft" /><telerik:EditorTool Name="InsertColumnRight" /><telerik:EditorTool Name="DeleteColumn" /><telerik:EditorSeparator /><telerik:EditorTool Name="MergeColumns" /><telerik:EditorTool Name="MergeRows" /><telerik:EditorSeparator /><telerik:EditorTool Name="SplitCellHorizontal" /><telerik:EditorTool Name="SplitCell" /><telerik:EditorTool Name="DeleteCell" /><telerik:EditorTool Name="SetCellProperties" /><telerik:EditorTool Name="SetTableProperties" /><telerik:EditorSeparator /><telerik:EditorSplitButton Name="InsertSymbol"></telerik:EditorSplitButton><telerik:EditorToolStrip Name="FormatStripper"></telerik:EditorToolStrip></telerik:EditorToolGroup><telerik:EditorToolGroup><telerik:EditorSplitButton Name="Undo"></telerik:EditorSplitButton><telerik:EditorSplitButton Name="Redo"></telerik:EditorSplitButton><telerik:EditorSeparator /><telerik:EditorTool Name="Cut" /><telerik:EditorTool Name="Copy" /><telerik:EditorTool Name="Paste" ShortCut="CTRL+V" /><telerik:EditorSeparator /><telerik:EditorTool Name="PasteFromWord" /><telerik:EditorTool Name="PasteFromWordNoFontsNoSizes" /><telerik:EditorTool Name="PastePlainText" /><telerik:EditorTool Name="PasteAsHtml" /><telerik:EditorTool Name="PasteHtml" /><telerik:EditorSeparator /><telerik:EditorTool Name="Print" /><telerik:EditorTool Name="FindAndReplace" /><telerik:EditorTool Name="SelectAll" /><telerik:EditorSeparator /><telerik:EditorTool Name="InsertGroupbox" /><telerik:EditorTool Name="InsertParagraph" /><telerik:EditorTool Name="InsertHorizontalRule" /><telerik:EditorSplitButton Name="InsertSnippet"></telerik:EditorSplitButton><telerik:EditorSeparator /><telerik:EditorTool Name="InsertDate" /><telerik:EditorTool Name="InsertTime" /><telerik:EditorSeparator /><telerik:EditorTool Name="AboutDialog" /><telerik:EditorTool Name="Help" /></telerik:EditorToolGroup><telerik:EditorToolGroup><telerik:EditorTool Name="Bold" /><telerik:EditorTool Name="Italic" /><telerik:EditorTool Name="Underline" /><telerik:EditorTool Name="StrikeThrough" /><telerik:EditorSeparator /><telerik:EditorTool Name="JustifyLeft" /><telerik:EditorTool Name="JustifyCenter" /><telerik:EditorTool Name="JustifyRight" /><telerik:EditorTool Name="JustifyFull" /><telerik:EditorTool Name="JustifyNone" /><telerik:EditorSeparator /><telerik:EditorTool Name="Superscript" /><telerik:EditorTool Name="Subscript" /><telerik:EditorSeparator /><telerik:EditorTool Name="ConvertToLower" /><telerik:EditorTool Name="ConvertToUpper" /><telerik:EditorTool Name="Indent" /><telerik:EditorTool Name="Outdent" /><telerik:EditorTool Name="InsertOrderedList" /><telerik:EditorTool Name="InsertUnorderedList" /><telerik:EditorTool Name="AbsolutePosition" /><telerik:EditorTool Name="InsertSpecialLink" Text="Insert Special Link"/><telerik:EditorTool Name="LinkManager" /><telerik:EditorTool Name="Unlink" /><telerik:EditorTool Name="ToggleTableBorder" /><telerik:EditorTool Name="ToggleScreenMode" /></telerik:EditorToolGroup><telerik:EditorToolGroup Tag="DropdownToolbar"><telerik:EditorSplitButton Name="ForeColor"></telerik:EditorSplitButton><telerik:EditorSplitButton Name="BackColor"></telerik:EditorSplitButton><telerik:EditorSeparator /><telerik:EditorDropDown Name="FontName"></telerik:EditorDropDown><telerik:EditorDropDown Name="FontSize"></telerik:EditorDropDown><telerik:EditorDropDown Name="RealFontSize"></telerik:EditorDropDown><telerik:EditorDropDown Name="ApplyClass"></telerik:EditorDropDown><telerik:EditorDropDown Name="InsertCustomLink"></telerik:EditorDropDown><telerik:EditorDropDown Name="FormatBlock"></telerik:EditorDropDown><telerik:EditorDropDown Name="Zoom"></telerik:EditorDropDown></telerik:EditorToolGroup></Tools><Content></Content><ImageManager MaxUploadFileSize="9242880" DeletePaths="~/UpLoadImages" UploadPaths="~/UpLoadImages"
ViewPaths="~/UpLoadImages" /><DocumentManager MaxUploadFileSize="9242880" DeletePaths="~/UploadFiles" UploadPaths="~/UploadFiles"
ViewPaths="~/UploadFiles" /><FlashManager MaxUploadFileSize="9242880" DeletePaths="~/UploadFiles" UploadPaths="~/UploadFiles"
ViewPaths="~/UploadFiles" /><SilverlightManager MaxUploadFileSize="9242880" DeletePaths="~/UploadFiles" UploadPaths="~/UploadFiles"
ViewPaths="~/UploadFiles" /><MediaManager MaxUploadFileSize="9242880" DeletePaths="~/UploadFiles" UploadPaths="~/UploadFiles"
ViewPaths="~/UploadFiles" /><TemplateManager MaxUploadFileSize="9242880" DeletePaths="~/UploadFiles" UploadPaths="~/UploadFiles"
ViewPaths="~/UploadFiles" /></telerik:RadEditor><script type="text/javascript">
Telerik.Web.UI.Editor.CommandList["InsertSpecialLink"] = function (commandName, editor, args) {
var elem = editor.getSelectedElement(); //returns the selected element.
if (elem.tagName == "A") {
editor.selectElement(elem);
argument = elem;
}
else {
var content = editor.getSelectionHtml();
var link = editor.get_document().createElement("A");
link.innerHTML = content;
argument = link;
}
var myCallbackFunction = function (sender, args) {
editor.pasteHtml(String.format("<a href={0} target='{1}' class='{2}'>{3}</a> ", args.href, args.target, args.className, args.name))
}
editor.showExternalDialog(
'InsertLink.aspx',
argument,
870,
600,
myCallbackFunction,
null,
'Insert Link',
true,
Telerik.Web.UI.WindowBehaviors.Close + Telerik.Web.UI.WindowBehaviors.Move,
false,
false);
};
</script>
Rumen
Telerik team
answered
on
07 May 2024
