Create a new folder in a shared mailbox with Invoke Code in Uipath

Question

Uipath Studio Version: 2021.10.3 Language: C#

Objective: I need to create a new folder and subfolder at the same level of the inbox of a shared mailbox. I need to implement this solution with Uipath and Invoke code activity.

Chosen approach: I did not find any official activity in Uipath to achieve my goal, so I decided to develop it through Invoke Code.

Source: I used this script to create a folder because I want to implement it using Exchange server. Authtenticate a EWS application by using OAuth

I already created the appId in our azure cloud.

Code created:

Main({sharedMailboxAddress,parentFolderName,childFolderName,appId});

class program
{
    static async System.Threading.Tasks.Task Main(string[] args)
            {
                // Using Microsoft.Identity.Client 4.22.0
            
                // Configure the MSAL client to get tokens
                var pcaOptions = new Microsoft.Identity.Client.PublicClientApplicationOptions
                {
                    // Client ID (also known as App ID) of the application as registered in the application registration porta
                   ClientId = args[4]
                };
              
               var pca = Microsoft.Identity.Client.PublicClientApplicationBuilder.CreateWithApplicationOptions(pcaOptions).Build();
            
               // The permission scope required for EWS access
               var ewsScopes = new string[] { "https://outlook.office365.com/EWS.AccessAsUser.All" };
                 
                try
                {
                    // Make the interactive token request
                    var authResult = await pca.AcquireTokenInteractive(ewsScopes).ExecuteAsync();
            
                    // Configure the ExchangeService with the access token
                    var ewsClient = new ExchangeService(ExchangeVersion.Exchange2013_SP1);
                    ewsClient.Url = new Uri("https://outlook.office365.com/EWS/Exchange.asmx");
                    ewsClient.Credentials = new OAuthCredentials(authResult.AccessToken);
                
                    FolderView fv = new FolderView(100);
                    
                    // Set Root from Shared Mailbox FolderId
                    System.Console.WriteLine(WellKnownFolderName.Root); 
                    FolderId SharedMailboxFolderId = new FolderId(WellKnownFolderName.Root, args[0]);
                    
                    // Set Parent FolderId
                    FolderId parentFolderID = null;
                    if(args[1]!="")
                    {
                        var findParentFolder = ewsClient.FindFolders(
                            SharedMailboxFolderId,
                            new SearchFilter.SearchFilterCollection(
                                Microsoft.Exchange.WebServices.Data.LogicalOperator.Or,
                                new SearchFilter.ContainsSubstring(FolderSchema.DisplayName, args[1])),
                            fv);
                        parentFolderID = findParentFolder.ElementAt(0).Id;
                        System.Console.WriteLine("Parent Folder exists");   
                    }
                    else
                    {
                        parentFolderID = SharedMailboxFolderId;
                    }
                    
                    var findChildFolder = ewsClient.FindFolders(
                            parentFolderID,
                             new SearchFilter.SearchFilterCollection(
                                Microsoft.Exchange.WebServices.Data.LogicalOperator.Or,
                                new SearchFilter.ContainsSubstring(FolderSchema.DisplayName, args[1])),
                            fv);
                        
                    FolderId childFolderID = findChildFolder.ElementAt(0).Id;
                    
                    //if child folder not found, create it
                    if (childFolderID == null)
                    {
                       //Source: https://learn.microsoft.com/en-us/previous-versions/office/developer/exchange-server-2010/dd633637(v=exchg.80)
                       // Create a generic folder with a valid ExchangeService object
                        Folder folder = new Folder(ewsClient);
                        // Set the folder properties
                        folder.DisplayName = args[3];
                        // Save the new folder in a specified parent folder.
                        folder.Save(parentFolderID);
                    }
                    else
                    {
                        System.Console.WriteLine($"Child Folder exists");   
                    }
                    
                }
                catch (Microsoft.Identity.Client.MsalException ex)
                {
                    System.Console.WriteLine("Error acquiring access token: {ex}");
                }
                catch (Exception ex)
                {
                   System.Console.WriteLine("Error: {ex}");
                }
                
        }   
}

Questions:

1. How to call the method Main in the Invoke code?
2. How to pass the arguments to this static method?. I created the arguments and those look like:

However, I do not really know how to pass them. That is why I created this code: Main({...}) but it does not work.

3. Should I add a namespace inside of the invoke code?
4. How do I retrieve the error from the catch block and assign it to the variable 'Fehlermeldung'?

Answer 1

That is a lot of questions in one :) First of, you could most likely achieve the same using a lot of Assign activities.

But if you want to continue to use the chosen approach then the first thing would be to only include the actual content of the Main method in the Invoke Code.

Your Invoke Code Arguments looks correct.

You should not add namespaces in the Invoke Code.

I'm not sure what you mean with your last point, but if you just assigned the String that you are currently logging, to the output variable ´Fehlermeldung´, then that should do it?
Just remember to add a $ before your first " in the string, when you want to include the exception message