How to open current working directory if a certain folder doesn't exists in the directory?

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Sanjay Yadav
Sanjay Yadav 2017-1-17
评论： Stephen23 2021-2-14
So here is my code on a pushbutton callback:
prompt = {'Enter Patient Name or ID:'};
title = 'Input';
num_lines = 1;
defaultans = {'Patient'};
answer = inputdlg(prompt,title,num_lines,defaultans);
handles.file = cellstr(answer{1});
%Creating a new folder by the name of Patient's name that user entered
folder = handles.file{1}
guidata(hObject, handles);
mkdir(folder);
By far its working fine, now in a different pushbutton callback I want to display an error if the folder of same name already exists
folder = handles.file{1}
if exist(folder,'dir')
winopen(folder);
else
winopen(pwd);
end
But it shows error : Reference to non-existent field 'file'. Please Help. Thanks in advance
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回答（1 个）

Image Analyst
Image Analyst 2017-1-17
Evidently your first function didn't execute so that file is not a new field attached to handles. Or guidata() didn't work, but that seems doubtful. Examine handles in the second function before it bombs (set a breakpoint) and make sure that file is a field that is still attached to handles.

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