read txt file from storage device in xamarin?

Kumar Aman 1

StreamReader reader = null;
var textFile = Path.Combine(Xamarin.Essentials.FileSystem.AppDataDirectory, "\USERDETAIL.txt");
CodeContract.Required<Exception>(!File.Exists(Global.mDeviceRootDir + "\USERDETAIL.TXT"), "USERDETAIL file not found");

        _offlineUsers = new List<OfflineUserDetails>();

        reader = new StreamReader(Global.mDeviceRootDir + "\\USERDETAIL.txt");
        while (!reader.EndOfStream)
        {
            var data = reader.ReadLine();
            string[] strArr = data.Split(',');
            if (strArr.Length == 2)
            {
                //ListViewItem iItem = new ListViewItem(strArr[0].ToString());
                //for (int j = 1; j < strArr.Length; j++)
                //{
                //    iItem.SubItems.Add(strArr[j].ToString());
                //}
                //lvUser.Items.Add(iItem);
            }
        }
        reader.Close();
        reader = null;

JarvanZhang 23,951 Reputation points

2021-08-25T06:02:27.537+00:00
Hi, KumarAman-0341. Do you face any problem when reading the file? Please post some description about your question. The 'Xamarin.Essentials.FileSystem.AppDataDirectory' command is to get the application's top-level directory. If you want to read the text file in this directory, you could use File.ReadAllText(path); directly.

var mainDir = FileSystem.AppDataDirectory; var fileName = Path.Combine(mainDir, "test.txt"); string text = File.ReadAllText(fileName);

Here is the related doc, you could refer to:
https://learn.microsoft.com/en-us/xamarin/xamarin-forms/data-cloud/data/files?tabs=windows#saving-and-loading-files

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read txt file from storage device in xamarin?