xamarin ios read txt file

本文介绍如何在Xamarin.iOS项目中进行文件的读取和写入操作。包括如何加载项目根目录下的文件内容到变量,并显示在控制台或UITextView中;以及如何将字符串保存到指定路径的文本文件中。

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  • Add the file to your Xamarin.iOS project and ensure the Build Action is set to BundleResource. The sample code has a file called ReadMe.txt in the TestData folder.

  • Load the file’s contents into a variable using ReadAllText. Notice the path that is passed to the method is relative to the project’s root
  • var text = System.IO.File.ReadAllText("TestData/ReadMe.txt");
    • Do something with the text, such as write to the Console or show in a UITextView:
    Console.WriteLine(text);
    txtView.Text = text;

  • To save a string value to a text file

    1. Make sure you add a using statement for System.IO.
    using System.IO;
    1. Determine the path for the **Documents** folder:
    var documents = Environment.GetFolderPath (Environment.SpecialFolder.MyDocuments);
    1. Construct a filename to save the document to:
    var filename = Path.Combine (documents, "Write.txt");
    1. Write to the file:
    File.WriteAllText(filename, "Write this text into a file!");

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