How Do I Efficiently Delete Files and Folders from a Directory in C#?

Removing Files and Subfolders from a Directory in C#

This guide demonstrates how to effectively remove all files and subfolders within a specified directory in C#, leaving the root directory intact.

Basic Deletion Method:

The following code provides a straightforward approach:

<code class="language-csharp">System.IO.DirectoryInfo di = new DirectoryInfo("YourPath");

foreach (FileInfo file in di.GetFiles())
{
    file.Delete();
}
foreach (DirectoryInfo dir in di.GetDirectories())
{
    dir.Delete(true);
}</code>

Enhanced Efficiency for Large Directories:

For directories containing a substantial number of files and folders, utilizing EnumerateFiles() and EnumerateDirectories() significantly improves performance. These methods avoid loading the entire directory structure into memory at once, leading to faster processing:

<code class="language-csharp">foreach (FileInfo file in di.EnumerateFiles())
{
    file.Delete();
}
foreach (DirectoryInfo dir in di.EnumerateDirectories())
{
    dir.Delete(true);
}</code>

Employing EnumerateFiles() and EnumerateDirectories() is the recommended practice when dealing with large datasets to minimize memory consumption and enhance deletion speed.

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