如何在Windows窗体中动态更新DataGridView？

Question

I am extremely sorry if a duplicate/similar question exists.

I have two forms: Result who's output is just a DataGridView and Main_Form which computes values for the Result form. The input is via a 'folder' which has various files which, after undergoing some computation, generate some values. These values are supposed to be put in the DataGridView.

My problem is that the 'folder' had those files being generated dynamically via some other application. How to I update my DataGridView without creating a new instance of the Result form?

I am creating a new instance of the Result form, so currently my code looks like this. I would break the infinite loop with after a particular period of time has lapsed...say 20 minutes.

while(true)
{
   FileInfo fi = new FileInfo(path);
   if (Directory.EnumerateFiles(path).Any())
   {
       System.IO.DirectoryInfo d = new DirectoryInfo(path);
       FileInfo[] Files = d.GetFiles("*.*");
       foreach (FileInfo f in Files)
       {
           if (IsFileLocked(f)) // since files are generated run-time
              System.Threading.Thread.Sleep(500); // wait                         
           // code that computes values for currently f existing files
           frm = new Result(parameters);
           frm.Show();
   }
   else
      System.Threading.Thread.Sleep(10000);
}

Answer 1

So the issue is knowing when to update the DataGridView ? If you are getting the data from files you can use FileSystemWatcher to detect file changes and update the DataGridView . I do not see the form code so you if you want to refresh the grid without creating a new instance you will need to detect the changes in the Result form and update there.