how reading all text files data in a folder and display on

Question

how reading all text files data in a folder and display on listbox c# windows application like a.txtb.txtctxt....more files

Tapan Patel · Answer

If you don't care about ordering of the files' text in list box then try getting allfiles' text using parallel.foreach (bit faster) and later convert the same to list and bind to listbox. private void GetAllFileText(ConcurrentBag string > allFilesText) { string path = @ path	estTextFiles\ ; DirectoryInfo di = new DirectoryInfo(path); /*SearchOption.AllDirectories can be used * if there are folders and those contains text files */ Parallel.ForEach(di.GetFiles( *.txt  SearchOption.TopDirectoryOnly)file=> { allFilesText.Add(File.ReadAllText(file.FullName)); }); } And in your main/calling method ConcurrentBag string > AllFilesText = new ConcurrentBag string >(); GetAllFileText(AllFilesText); listBox1.DataSource = AllFilesText.ToList();

Sandy · Answer

Hi Parveen Use below Code.Hope this help List lines = new List (); FileInfo[] Files = dinfo.GetFiles( *.txt ); foreach( FileInfo file in Files ) { lines.AddRange(File.ReadAllLines(file.fileName)); } listbox1.DataSource = lines Thanks Sandy

Nilesh Patil · Answer

Hi Praveen apply this foreach (string file in Directory.EnumerateFiles(folderPath *.txt)) { string contents = File.ReadAllText(file); } refer this link https://stackoverflow.com/questions/5840443/how-to-read-all-files-inside-particular-folder

praveen kumar · Answer

thank you sir but not list sir  I want all lines of a.txt file  all lines of b.text fileall lines of c.text file....ect read all files information will be dipaly on the listbox

Nilesh Patil · Answer

Hi Hopes it will work List lines = new List (); using (StreamReader r = new StreamReader(f)) { string line; while ((line = r.ReadLine()) != null) { lines.Add(line); } }

praveen kumar · Answer

not only list sir want all lines of text file and display on the listbox

Nilesh Patil · Answer

// What type of file do we want?... FileInfo[] Files = dinfo.GetFiles(*.txt); // Iterate through each file displaying only the name inside the listbox... foreach( FileInfo file in Files ) { listbox1.Items.Add(file.Name); }