C# Object Constructor Overloads

I'm trying to have an overloaded c开发者_开发技巧onstructor for a class. I think this should be fairly simple, however I can't seem to make it work.

Any ideas?

    public SaveFile(string location)
    {
        // Constructor logic here
        //TODO: Implement save event.
        this.Save(location);
    }

    public SaveFile()
    {
        string location = Environment.GetFolderPath(Environment.SpecialFolder.Personal) + "\\SaveFile.DAT";
        SaveFile(location);
    }

This doesn't compile correctly, and I can't figure out how to do make it work.

You have the wrong syntax for calling an overloaded constructor from within the default constructor.
To call an overloaded constructor in the same class, use this syntax:

public ClassName(parameters) : this(otherParameters)
{
   // logic
}

If you wanted to call a constructor in the base class, then you would use the base keyword instead of this. In your case the code would read:

public SaveFile() : this(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal), "SaveFile.DAT") {}
public SaveFile(string location)
{
    this.Save(location);
}

 public SaveFile() 
   : this(Environment.GetFolderPath(Environment.SpecialFolder.Personal) + "\\SaveFile.DAT")
    { 
    } 

However that really should be:

 public SaveFile() 
   : this(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Personal),"SaveFile.DAT"))
    { 
    } 

Try this

public SaveFile(string location)
{
    // Constructor logic here
    //TODO: Implement save event.
    this.Save(location);
}

public SaveFile(): this(Environment.GetFolderPath(Environment.SpecialFolder.Personal) + "\\SaveFile.DAT")
{
}