Windows窗体C＃中的文件夹

Question

This is my first windows form application.

I need to work with folders that I have created in my project and I need to access the Data folder where I put .txt files.

I try :

string fileName = @"Data\TextFile1.txt";
string path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, fileName);

but i keep receiving this error :

impossible find part of path.

How can I combine the folder's path with file's name so when I release the project all works well?

This is what I do in an asp.net application:

Path.Combine(HttpRuntime.AppDomainAppPath, "Folder/FileName.txt");

Answer 1

in C# .NET you can easy use the Environment Properties when working with Forms.

If you want eg the Appdata Path do this:

string MyPath = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + @"\" + MyFileName;

But please get sure that the File/Path Exists! For this you can use File .Exists -Function:

if(File.Exists(MyPath))
{
//Do Something
}

(For File -Class you need the System.IO namespace!)

EDIT:

Example:

  string MyPath = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData) + @"\MyConfig.txt";

if(File.Exists(MyPath))
{
 MessageBox.Show($"{MyPath} exists!");
}

Hope that helped ;)

Answer 2

If I understand correctly, you are trying to read some file you have added to your solution in Visual Studio. First, to have those files "deployed", click on them in the Solution Explorer, go to the Properties tool and have a look at the "Copy to Output Directory". Default is "Do not copy". Change that setting to "Copy always" or "Copy if newer". Now your files will be copied to the output directory when you build the solution. Then, to get the current assembly path at runtime, have a look at: Getting the path of the current assembly

string path = (new System.Uri(Assembly.GetExecutingAssembly().CodeBase)).AbsolutePath;

from the assembly path, you can get the containing folder's path, then you can use Path.Combine() to get your desired file path.

Answer 3

I would not create any path inside the application if possible. The NET framework provides the application configuration file for this kind of problems. You should simply add this section to your configuration file (app.config when developing, then application.exe.config after compilation)

<configuration>
  <appSettings>
    <add key="mydatafolder" value="e:\whateverpathyoulike"></add>
  </appSettings>
</configuration>

Then at runtime read that value from your code

string path = ConfigurationManager.AppSettings["mydatafolder"];
path = Path.Combine(path, fileName);

This is easily modifiable both automatically or manually to adapt to any environment you find on the destination computers

Answer 4

Your data files need to be available in output folder along with you application .exe file. to do that:

1. Open properties of each file in Data folder.
2. Select Copy Always against Copy to output directory
3. Then build application

This will copy Data folder along with all files in Bin\\Debug folder and will work with your existing code.