在Windows 8.1应用程序中一次读取一行文本文件

Question

I added this code to the OnNavigatedTo function:

int counter = 0;   
string line;
string path = "Streams\\Usernames.txt";

// Read the file and display it line by line.
System.IO.StreamReader file =
   new System.IO.StreamReader(path);
while ((line = file.ReadLine()) != null)
{
    Lbx_Usernames.Items.Add(line);
    counter++;
}

But I keep getting this error:

Cannot convert from 'string' to 'System.IO.Steam'

Answer 1

First off, there are many differences in the API sets that are used in a desktop application and a Windows 8.1 (Universal) application.

This

System.IO.StreamReader file = new System.IO.StreamReader(string path);

is only available in desktop applications (Console, WinForm/WPF).

In Windows Store apps , you can use FileIO.ReadLinesAsync(IStorageFile) to read all text from a file, which accepts a StorageFile as an argument, and returns a list of lines and you can iterate through each line.

This sample can get you started.