Question

I am working on a windows service c# program.

I need to use a file. Here is my code

const string mail_file_path = @"template\mailbody.html";

But according to my log, there is an error like this:

Error: Could not find a part of the path ‘C:\Windows\system32\template\mailbody.html’.

I use the app.configuration to use another file

<add key="TimeStampFilePath" value="timestamp.ini" />
StreamReader sr = new StreamReader(ConfigurationManager.AppSettings["TimeStampFilePath"]);

But I can’t read the file.

When I run this project as a simple windows console project, it works. But after I run it using windows service mode, the two problems appear.

Answer 1

You could try:

// dir is path where your service EXE is running
string dir = Path.GetDirectoryName(
    Assembly.GetExecutingAssembly().Location);    
// mail_file_path is where you need to search
string mail_file_path = Path.Combine(dir , @"\template\mailbody.html");

Take my answer as an integration to @CharithJ’s post, which is definitely correct!!