How to upload csv. files from multiple folders

Dear Matlab users,

I want to automize my program by uploading automatic csv. files from different folders. For example:

I have 15 folders and each folder has 4 csv files. Currently in my program i am uploading for each cycle(for loop) 4 csv. files...and running and getting results similarly for second cycle again i am uploading from second folder 4 csv files and running and so on for 15 times. Can anybody help me ? Attached my codes

 mainFolder = uigetdir();    % Selectyour Main folder 
 [~,message,~] = fileattrib([mainFolder,'\*']);
 fprintf('\n There are %i total files & folders.\n',numel(message));
 allExts = cellfun(@(s) s(end-2:end), {message.Name},'uni',0); % Get exts
 CSVidx = ismember(allExts,'csv');    % Search ext for "CSV" at the end 
 CSV_filepaths = {message(CSVidx).Name};  % Use CSVidx to list all paths.
 fprintf('There are %i files with *.CSV exts.\n',numel(CSV_filepaths));
Total_Files = 1:numel(CSV_filepaths);


for Folder=1:numel(Total_Files)/2
    
 [filenames pathname]=uigetfile('*.CSV','MultiSelect', 'on');

if isa(filenames,'cell')

    name_order=0;
    ind_order=0;
    for i=1:max(size(filenames))
        name_order=[name_order str2num(filenames{i}(10:end-4))];
        ind_order=[ind_order i];
    end
    name_order=[name_order(2:end);ind_order(2:end)];
    name_order_sorted=sortrows(name_order')';
    name_ind=0;
    
    for i=name_order_sorted(2,:)
        name_ind=name_ind+1;
        filenames_sorted{name_ind}=filenames{i};
    end
    filenames=filenames_sorted;

    for i=1:max(size(filenames))
        data=importdata([pathname filenames{i}]);
        data=data.data;
        files(i).name=filenames{i};
        files(i).data=data;
    end
elseif isa(filenames,'char')
    data=importdata([pathname filenames]);
    data=data.data;
    files.name=filenames;
    files.data=data;
else
    error('No files selected !');
end


for i= 1:max(size(files))
        
        display(files(i).name)

        data=files(i).data;
     
        My_data_t(:,1)=data(:,1)
        My_data(:,2)=data(:,2)
        
end 
end 

Answer 1

[prasanth s]

to automate the file and folder access operations, do not use 'uigetfile' or 'uigetdir' functions.

use 'dir' function to get the file and folder names of any directory.

D=dir('E:\folder');

to get all 'csv' filenames in 'myfolder'

F=dir('myfolder\*.csv')

loop through the output struct array 'F' and get the filenames

[Ill ch]

Thank you very much

[Ill ch]

Hi Prasanth

With your suggested code i am not getting filenames. I have 13 folders in one main folder. each 13 folder has 4 csv. files

mainFolder =dir('C:\MATLAB\e');    % Selectyour Main folder 
 F=dir('C:\MATLAB\e.csv');