如何读取项目根目录中的文本文件？

Question

I want to read the first line of a text file that I added to the root directory of my project. Meaning, my solution explorer is showing the .txt file along side my .cs files in my project.

So, I tried to do:

TextReader tr = new StreamReader(@"myfile.txt");
string myText = tr.ReadLine();

But this doesn't work since it's referring to the Bin Folder and my file isn't in there... How can I make this work? :/

Thanks

Answer 1

From Solution Explorer, right click on myfile.txt and choose "Properties"

From there, set the Build Action to content and Copy to Output Directory to either Copy always or Copy if newer

Answer 2

You can use the following to get the root directory of a website project:

String FilePath;
FilePath = Server.MapPath("/MyWebSite");

Or you can get the base directory like so:

AppDomain.CurrentDomain.BaseDirectory

Answer 3

Add a Resource File to your project (Right Click Project->Properties->Resources). Where it says "strings", you can switch to be "files". Choose "Add Resource" and select your file.

You can now reference your file through the Properties.Resources collection.

Answer 4

private string _filePath = Path.GetDirectoryName(System.AppDomain.CurrentDomain.BaseDirectory);

The method above will bring you something like this:

"C:\Users\myuser\Documents\Visual Studio 2015\Projects\myProjectNamespace\bin\Debug"

From here you can navigate backwards using System.IO.Directory.GetParent:

_filePath = Directory.GetParent(_filePath).FullName;

1 time will get you to \\bin, 2 times will get you to \\myProjectNamespace, so it would be like this:

_filePath = Directory.GetParent(Directory.GetParent(_filePath).FullName).FullName;

Well, now you have something like "C:\\Users\\myuser\\Documents\\Visual Studio 2015\\Projects\\myProjectNamespace", so just attach the final path to your fileName, for example:

_filePath += @"\myfile.txt";
TextReader tr = new StreamReader(_filePath);

Hope it helps.

Answer 5

You can have it embedded (build action set to Resource ) as well, this is how to retrieve it from there:

private static UnmanagedMemoryStream GetResourceStream(string resName)
{
    var assembly = Assembly.GetExecutingAssembly();
    var strResources = assembly.GetName().Name + ".g.resources";
    var rStream = assembly.GetManifestResourceStream(strResources);
    var resourceReader = new ResourceReader(rStream);
    var items = resourceReader.OfType<DictionaryEntry>();
    var stream = items.First(x => (x.Key as string) == resName.ToLower()).Value;
    return (UnmanagedMemoryStream)stream;
}

private void Button1_Click(object sender, RoutedEventArgs e)
{
    string resName = "Test.txt";
    var file = GetResourceStream(resName);
    using (var reader = new StreamReader(file))
    {
        var line = reader.ReadLine();
        MessageBox.Show(line);
    }
}

(Some code taken from this answer by Charles )

Answer 6

You have to use absolute path in this case. But if you set the CopyToOutputDirectory = CopyAlways , it will work as you are doing it.

Answer 7

In this code you access to root directory project:

 string _filePath = Path.GetDirectoryName(System.AppDomain.CurrentDomain.BaseDirectory);

then:

StreamReader r = new StreamReader(_filePath + "/cities2.json"))