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How to: Read Text from a File

The following example shows how to read text from a text file using xtd for desktop apps. In example, when you create the instance of the xtd::io::stream_reader class, you provide the relative or absolute path to the file.

Example: Read in a console app​

The following example shows a read operation within a console app. This example opens the text file using a stream reader, copies the contents to a string, and outputs the string to the console.

Important​

The example assume that a file named test_file.txt already exists in the same folder as the app.

#include <xtd/xtd>

using namespace xtd;
using namespace xtd::io;

class program {
public:
  static auto main() {
    try {
      // Open the text file using a stream reader.
      using_ (stream_reader sr("test_file.txt")) {
        // Read the stream as a string, and write the string to the console.
        console::write_line(sr.read_to_end());
      }
    } catch (const io_exception& e) {
      console::write_line("The file could not be read:");
      console::write_line(e.message());
    }
  }
};

startup_(program);

See also​