MATLAB: List box items

guilistbox

How can i check if the new item which i want to add to list box if it is exist or not
i write this code but it is not working
[filename, pathname] = uigetfile( ...
  {'*.m', 'All matlab-Files (*.m)'; ...
      '*.*','All Files (*.*)'}, ...
  'Select Matlab File');
file = fullfile(pathname,filename);
filename = filename(1:end-2);
currentItems = get(handles.listbox1, 'String');
if pathname == 0
  return
else
for n = 1:length(newItems)
    if filename == currentItems(n);
        uiwait(msgbox('The algorithm you select are exist! Please selesct another.','Error','modal'));
        [filename, pathname] = uigetfile( ...
    {'*.m', 'All matlab-Files (*.m)'; ...
        '*.*','All Files (*.*)'}, ...
    'Select Matlab File');
file = fullfile(pathname,filename);
filename = filename(1:end-2);
    end
end
end
         currentItems{end+1} = filename;
set(handles.listbox1,'String',currentItems);

Best Answer

Try using strcmpi(filename, currentItems(n))>0 instead of "filename == currentItems(n);"
Also, you need to set a flag for whether you should add the name. Currently you call currentItems{end+1} = filename; regardless if it's on the list already or not.
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