Convert an object to System Guid

Question

Guid mainfolderid = (main.GetValue(""));

where main is a dynamic entity.

How can I convert the above mentioned main.GetValue("") to System.Guid?

The error says

Cannot implicitly convert type object to 'System.Guid'.

Answer 1

Does the GetValue method actually return a Guid typed as object? If so, then you just need to perform an explicit cast like so:

Guid mainfolderid = (Guid)main.GetValue("");

If not, does GetValue return something that can be passed to one of the constructors (ie, a byte[] or string)? In that case you could do this:

Guid mainfolderid = new Guid(main.GetValue(""));

If neither of the above are applicable then you're going to need to do some manual work to convert whatever's returned by GetValue to a Guid.

Answer 2

Guid mainfolderid = new Guid(main.GetValue("").ToString());

Answer 3

If you're using .Net 4.0, there were Parsing methods added to the Guid struct:

Guid Guid.Parse(string input)

and

bool Guid.TryParse(string input, out Guid result)

will do what you want.

Answer 4

One way is to use the GUID constructor, and pass it a string representation of the GUID. This will work if the object is really a string representation of GUID. Example:

Guid mainfolderid = new Guid(main.GetValue("").ToString());