MATLAB: Generate an Error when an input value contains a comma

commaerrorgenerategui

My question is: is it possible to generate an error pop-up in my UI when an input value contains a comma? For now I got an error pop-up when the input value is not a number by the following code:
if isnan(cv)
    set(hObject, 'String', 0);
    errordlg('Input must be a number','Error');
end
Currently I am copying this code to every variable I enter (which are a lot of variables). This makes the .m-file a little unclear/confusing to read. Is it also possible to set this code as a general code that applies for the whole programm?

Best Answer

if ~isempty(strfind(cv, ','))
  % cv contains a comma
else
  % cv does not contain a comma
end
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