Question

I have a question, because I am a coder of c++, now I need read some c# code. This is a class in a namespace, what I do not understand is the last member;

public string FilePath
{
            get { return this.filePath; }
            set { this.filePath = value; }
}

I do not know it is a member variable or a member function.

If see it as a member function, it should like

public string FilePath(***)
{
****;
}

but here it doesn’t have a () similar parameter, what type of function is it?

  class INIFileOperation
    {
    private string filePath;

    [DllImport("kernel32")]
    private static extern long WritePrivateProfileString(string section,
    string key,
    string val,
    string filePath);

    [DllImport("kernel32")]
    private static extern int GetPrivateProfileString(string section,
    string key,
    string def,
    StringBuilder retVal,
    int size,
    string filePath);

    public string ReadAppPath()
    {
        string appPath = Path.GetDirectoryName(Application.ExecutablePath);

        return appPath + "\\Setting.ini";
    }

    public INIFileOperation()
    {
        this.filePath = ReadAppPath();
    }

    public void Write(string section, string key, string value)
    {
        WritePrivateProfileString(section, key, value.ToUpper(), this.filePath);
    }
    public string Read(string section, string key)
    {
        StringBuilder SB = new StringBuilder(255);
        int i = GetPrivateProfileString(section, key, "", SB, 255, this.filePath);
        return SB.ToString();
    }
    public string FilePath
    {
        get { return this.filePath; }
        set { this.filePath = value; }
    }
}

Answer 1

You can view

public string FilePath
        {
            get { return this.filePath; }
            set { this.filePath = value; }
        }

as a kind of writing

public string GetFilePath() { return this.filePath; }
public string SetFilePath(string value_) { this.filePath = value_; }

but it gives you the so called property FilePath which can be used as obj.FilePath="abc"or string abc = obj.FilePath.