Copy new added folder in Source folder to Target folder

Hello everyone,

I am using Visual C# and create user interface. There have only one button in interface.

There have 2 folders with name 'Source' and 'Target', in 'Source' folder contains '2019', '2018', '2017' folders. Once a day, there is 1 folder's name start with '201904" with 10 file's name start with "text" will be downloaded and move to "C:/Users/Source/2019/".

According to codes that I have for now:

In day 1, I have been click a button and then a folder "20190401" in "C:/Users/Source/2019/" copied to "C:/Users/Target/".

But in day 2, the new downloaded folder "20190402" in '"C:/Users/Source/2019/" wouldn't copy to "C:/Users/Target/" after I click a button for 2nd time, because it cannot overwrite the existed "20190401" folder in "C:/Users/Target/".

The result that I expected, "C:/Users/Target/" will collects "201904**"folder in daily by clicking button once a day. Furthermore, only [3] files in folder "201904**" name start with "text" will be copy to "C:/Users/Target/". Do you guys have any idea to solve this problem?

private void button1_Click(object sender, EventArgs e)
{
string FROM_DIR = "C:/Users/Source/";
string TO_DIR = "C:/Users/Target/";
DirectoryInfo diCopyForm = new DirectoryInfo(FROM_DIR);
DirectoryInfo[] fiDiskfiles = diCopyForm.GetDirectories();
string directname = "201904";
string filename = ".txt";
foreach (DirectoryInfo newfile in fiDiskfiles)
{
try
{
if (newfile.Name == "2019")
{
foreach (DirectoryInfo direc in newfile.GetDirectories())
if (direc.Name.StartsWith(directname))
{
int count = 0;
foreach (FileInfo file in direc.GetFiles())
{
if (file.Name.EndsWith(filename))
{
count++;
}
}
if (count == 6)
{
DirectoryCopy(direc.FullName,Path.Combine(TO_DIR,direc.Name), true);
count = 0;
MessageBox.Show("success");
}
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
private static void DirectoryCopy(string sourceDirName, string destDirName, bool copySubDirs)
{
// Get the subdirectories for the specified directory.
DirectoryInfo dir = new DirectoryInfo(sourceDirName);
if (!dir.Exists)
{
throw new DirectoryNotFoundException("Source directory does not exist or could not be found: "+ sourceDirName);
}
DirectoryInfo[] dirs = dir.GetDirectories();
// If the destination directory doesn't exist, create it.
if (!Directory.Exists(destDirName))
{
Directory.CreateDirectory(destDirName);
}
// Get the files in the directory and copy them to the new location.
FileInfo[] files = dir.GetFiles();
foreach (FileInfo file in files)
{
string temppath = Path.Combine(destDirName, file.Name);
file.CopyTo(temppath, false);
}
// If copying subdirectories, copy them and their contents to new location.
if (copySubDirs)
{
foreach (DirectoryInfo subdir in dirs)
{
string temppath = Path.Combine(destDirName, subdir.Name);
DirectoryCopy(subdir.FullName, temppath, copySubDirs);
}
}
}

Best regards,

Pugita