How to save a mat.file from GUI to a Folder chosen by the user !

Hello,

i am interested in Programming with GUI. One Problem i am currently facing is how to save data from a GUI to a chosen Folder. It doesnt need to be necessarily saved in the workspace first.

Assume i have to save this Data:

handles.myMatrix=[1,2,3;4,5,6]

And i found this script to use:

myMatrix = handles.myMatrix;
myMatFullFileName = fullfile('C:','Users','busta','Desktop', 'myBaseMatFileName.mat');
save(myMatFullFileName, 'myMatrix');

This works fine but the user does not have the possibility of chooosing the directory.

For loading data i got this, that works fine! this is what i would like to have for saving too. I cannot adapt it:(

function load__Callback(hObject, eventdata, handles)
% hObject    handle to load_ (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

      startingFolder = 'C:\Program Files\MATLAB'
      if ~exist(startingFolder, 'dir')
          % If that folder doesn't exist, just start in the current folder.
          startingFolder = pwd;
      end
      % Get the name of the mat file that the user wants to use.
      defaultFileName = fullfile(startingFolder, '*.mat')
      [baseFileName, folder] = uigetfile(defaultFileName, 'Select a mat file')
      if baseFileName == 0
          % User clicked the Cancel button.
          return;
      end
      fullFileName = fullfile(folder, baseFileName)

      storedStructure = load(fullFileName)

I would be very glad for your help!

best regards, busta x

[John]

Works like that:

startingFolder = 'C:\Program Files\MATLAB'
      if ~exist(startingFolder, 'dir')
          % If that folder doesn't exist, just start in the current folder.
          startingFolder = pwd;
      end
      % Put in the name of the mat file that the user wants to save.
     % defaultFileName = fullfile(startingFolder, '*.mat')

        [file,path] = uiputfile('myMatrix.mat','Save file name');

        if file == 0
            % User clicked the Cancel button.
            return;
        end
        fullFileName = fullfile(path, file)

        save(fullFileName)