How to use Box Service Account - Part 2 - Microsoft Technologies, Azure and .net Tutorials

Create account in Auth0

We have to create account in Auth0 for jwt token.
Register an application
For this open Auth0 link. if you have already an account then login otherwise click on Sign up. Use the link https://auth0.com/docs/login

Fill the email id and password
Click on Sign Up

You will get the following screen
Select the region
Click on Next

If you want to create personal account then click on Personal other wise click on Company. Here I am selecting personal.
Fill the necessary details.

After selecting personal you will get the following screen.
Click on Create Account

After that you will get the following screen.
On the left side click on Applications

You will get the following screen
Click on Create Application

You will get the following screen.
Select the Machine to machine applications
Click on Create

You will get the following screen.
Select the API

Select the Scopes
Here I am selecting All
Click on Authorize

After that you will get the following screen.

Here we have lot of option to choose programming language of our choice.
We are selecting C# as our language
Click on C# and use that code for getting the token that is used for authenticating the Box

Now that is it we have completed auth0 part.
Now we are go to visual studio and create new project
Open visual studio 2019
Create a new windows forms project using c#
From nugget package install the Box.V2 and Restsharp

Add new Folder BoxConfigFile and copy the box configuration file in that you have downloaded and rename it to boxConfig.json

Add new class BoxAPIToken this is used to serialize the response return from Auth0

      public class BoxAPIToken
    {
        public string access_token { get; set; }
        public string expires_in { get; set; }
        public string token_type { get; set; }
    }

Add New class BoxJwt

    public class BoxJwt
    {
        private IBoxConfig boxConfig;
        public BoxJWTAuth BOX_JWT_HELPER;
        public BoxClient BoxUserClient;
        public string access_token;

        public BoxJwt(string boxconfig)
        {
            try
            {
                boxConfig = BoxConfig.CreateFromJsonString(boxconfig);

                BOX_JWT_HELPER = new BoxJWTAuth(boxConfig);
            }
            catch (Exception ex)
            {

            }
        }

        public BoxClient GetBoxUserClient(string boxUserId = null)
        {
            BoxClient boxClient = null;
            try
            {

//Copy the code from Auth0 mentioned below

           var token = JsonConvert.DeserializeObject<BoxAPIToken>                                       (response.Content);

                if (string.IsNullOrEmpty(boxUserId)) boxUserId = null;

                boxClient = BOX_JWT_HELPER.UserClient(token.access_token,                                    boxUserId);
            }
            catch (Exception ex)
            {

            }
            return boxClient;
        }

On the windows form add 2 button
Create Folder button
Upload File button
On the form load do the following code

       BoxClient boxClient=null;
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            try
            {
                string appPath =                                                  Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location);
                appPath = Path.Combine(appPath, "BoxConfigFile");
                appPath = appPath + "\\boxConfig.json";

                string jsonConfig = File.ReadAllText(appPath);

                BoxJwt boxJwt = new BoxJwt(jsonConfig);
                boxClient = boxJwt.GetBoxUserClient();
            }
            catch(Exception ex)
            {

            }
        }

Add the following function in the form

       public async Task CreateFolder()
        {
            try
            {
                // Create a new folder in the user's root folder
                var folderParams = new BoxFolderRequest()
                {
                    Name = "Demo",
                    Parent = new BoxRequestEntity()
                    {
                        Id = "0"
                    }
                };

                BoxFolder folder = await boxClient.FoldersManager.CreateAsync(folderParams);

            }
            catch (Exception ex)
            {

            }
        }

On the click event button of Create Folder, do the following code

        private void CmdCreateFolder_Click(object sender, EventArgs e)
        {
            try
            {
                CreateFolder().Wait();
            }
            catch(Exception ex)
            {

            }
        }

Run the application
Click on Create Folder button, Demo folder is created in the application context of Box.
To see the Folder Id, that is created in application Context of Box, Login to your account
Click on Admin Console
Select the application that you have created.
Hover on the Demo folder, you will see the folder Id in left bottom corner
Below is the screen

Add new function in the form code

public async Task UploadFile()
        {
            try
            {
                BoxFile newFile;

                // Create request object with name and parent folder the file should be uploaded to
                using (FileStream stream = new FileStream(@"D:\\example.pdf", FileMode.Open))
                {
                    BoxFileRequest req = new BoxFileRequest()
                    {
                        Name = "example.pdf",
                        Parent = new BoxRequestEntity() { Id = "106108558600" }
                    };
                    newFile = await boxClient.FilesManager.UploadAsync(req, stream);
                }
            }
            catch (Exception ex)
            {

            }
        }

In the parent provide the id of Demo folder in which file will be uploaded.
On the click event of Upload File, do the following code.

       private void CmdUploadFile_Click(object sender, EventArgs e)
        {
            try
            {
                UploadFile().Wait();
            }
            catch(Exception ex)
            {

            }
        }