How to store large amount of Data in maui application.

Question

Hello Team,

We had migrated our xamarin application to Maui - We need to store large json file approx ( 1 Lakh lines).

Earlier in Xamarin we used to create a text file in local folder and we used to write into that particular file. Can we follow the same approach in the MAUI as well or Do we have any better approach than this..

Issue: When we are writing into the particular text file we are facing issues intermittently. Here's the issue.

The process cannot access the file 'C:\Users\name\AppData\Local\Packages\com.myapp_0rsx5m3gg4efp\LocalState\logs.txt' because it is being used by another process.

here's the code for that.

 public partial void Log(string message, string fileName)
 {
     try
     {
         lock (mLocker)
         {
             StorageFolder local = ApplicationData.Current.LocalFolder;
             string documentsPath = local.Path;
             string filePath = Path.Combine(documentsPath, "logs.txt");
             if (!File.Exists(filePath))
             {
                 File.Create(filePath);
             }
             using (StreamWriter streamWriter = new StreamWriter(filePath, true))
             {
                 streamWriter.WriteLine("\r\n" + message);
             }
         }
     }
     catch (IOException ex)
     {
         // Suppressing the exception
         App.TVDAppDiagnosticsService.ReportException(ex);
     }
 }

Thanks
Vaibhav Methuku.

Answer 1

To avoid the intermitent error, try to remove the File.Create line and the whole if.

Answer 2

Hello,

For how to copy large files in MAUI, you can refer to the general answer of this thread and operate through FileStream.

• How to copy big file 5g with task and within impersonation

Best Regards,

Alec Liu.

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