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

praveen kumar

9y10.5kVisual Basic .NET

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

a.txt,b.txt,c,txt....more files

7 Replies

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Tapan Patel9y ago
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\testTextFiles\";
    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();
0
Sandy9y ago
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
0
Nilesh Patil9y ago
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
0
praveen kumar9y ago
thank you sir ,but not list sir , I want all lines of a.txt file , all lines of b.text file,all lines of c.text file....ect read all files information will be dipaly on the listbox
0
Nilesh Patil9y ago
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);
}
}
0
praveen kumar9y ago
not only list sir want all lines of text file and display on the listbox
0
Nilesh Patil9y ago
// 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); }
0