From f427f80eaa5f941b7fddb825373e66318bd719a8 Mon Sep 17 00:00:00 2001
From: Peter Donker <peter@bring2mind.net>
Date: Wed, 22 Apr 2020 22:39:57 +0200
Subject: [PATCH] Provide better feedback to end users in case something went
 wrong when trying to export content

---
 .../Website/admin/Modules/Export.ascx.cs      | 29 ++++++++++++-------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/DNN Platform/Website/admin/Modules/Export.ascx.cs b/DNN Platform/Website/admin/Modules/Export.ascx.cs
index ff500c6d687..d17c85cdd48 100644
--- a/DNN Platform/Website/admin/Modules/Export.ascx.cs	
+++ b/DNN Platform/Website/admin/Modules/Export.ascx.cs	
@@ -82,8 +82,8 @@ private string ExportModule(int moduleID, string fileName, IFolderInfo folder)
                     {
                         var objObject = Reflection.CreateObject(Module.DesktopModule.BusinessControllerClass, Module.DesktopModule.BusinessControllerClass);
 
-						//Double-check
-						if (objObject is IPortable)
+                        //Double-check
+                        if (objObject is IPortable)
                         {
                             XmlDocument moduleXml = new XmlDocument { XmlResolver = null };
                             XmlNode moduleNode = ModuleController.SerializeModule(moduleXml, Module, true);
@@ -104,9 +104,9 @@ private string ExportModule(int moduleID, string fileName, IFolderInfo folder)
                             var content = sw.ToString();
                             if (!String.IsNullOrEmpty(content))
                             {
-								//remove invalid chars in content -> DNN 26810: Handled by ModuleController.SerializeModule
-	                            //content = Regex.Replace(content, _invalidCharsRegex, string.Empty);
-								//add attributes to XML document
+                                //remove invalid chars in content -> DNN 26810: Handled by ModuleController.SerializeModule
+                                //content = Regex.Replace(content, _invalidCharsRegex, string.Empty);
+                                //add attributes to XML document
                                 //content = "<?xml version=\"1.0\" encoding=\"utf-8\" ?>" + "<content type=\"" + CleanName(Module.DesktopModule.ModuleName) + "\" version=\"" +
                                 //          Module.DesktopModule.Version + "\">" + content + "</content>";
 
@@ -114,10 +114,10 @@ private string ExportModule(int moduleID, string fileName, IFolderInfo folder)
                                 if (PortalController.Instance.HasSpaceAvailable(PortalId, content.Length))
                                 {
                                     //add file to Files table
-									using (var fileContent = new MemoryStream(Encoding.UTF8.GetBytes(content)))
-									{
+                                    using (var fileContent = new MemoryStream(Encoding.UTF8.GetBytes(content)))
+                                    {
                                         Services.FileSystem.FileManager.Instance.AddFile(folder, fileName, fileContent, true, true, "application/octet-stream");
-									}
+                                    }
                                 }
                                 else
                                 {
@@ -134,9 +134,16 @@ private string ExportModule(int moduleID, string fileName, IFolderInfo folder)
                             strMessage = Localization.GetString("ExportNotSupported", LocalResourceFile);
                         }
                     }
-                    catch
+                    catch (Exception ex)
                     {
-                        strMessage = Localization.GetString("Error", LocalResourceFile);
+                        if (ex is InvalidFileExtensionException || ex is PermissionsNotMetException || ex is InvalidFilenameException)
+                        {
+                            strMessage = ex.Message;
+                        }
+                        else
+                        {
+                            strMessage = Localization.GetString("Error", LocalResourceFile);
+                        }
                     }
                 }
                 else
@@ -227,7 +234,7 @@ protected void OnExportClick(object sender, EventArgs e)
                         {
                             UI.Skins.Skin.AddModuleMessage(this, strMessage, ModuleMessage.ModuleMessageType.RedError);
                         }
-                        }
+                    }
 
                 }
                 else