How to Easily Extract a Filename (Without Extension) from a Filepath in C#?

Use the PATH class to extract the file name from the file path

When processing the file path, it is a common task to extract file name (excluding extension). Traditionally, developers may use string segmentation to achieve this, as shown in the following example:

<code class="language-csharp">string path = "C:\Program Files\hello.txt";
string[] pathArr = path.Split('\');
string[] fileArr = pathArr.Last().Split('.');
string fileName = fileArr.Last().ToString();</code>

Although this method is valid, it looks awkward and easy to make mistakes. Fortunately, the .NET Framework provided a more elegant solution, the PATH class.

Path.getFilename method

Path.getFilename method returns the file name and its extension of the specified file path. This method is usually used to extract only file names, and its grammar is as follows:

<code class="language-csharp">public static string GetFileName(string path);</code>

Path.getFilenamewithoutextation method

The more convenient is Path.GetFilenameWithoutextation method. It does not contain file extension name:

<code class="language-csharp">public static string GetFileNameWithoutExtension(string path);</code>

Using these methods, our code fragment can be simplified to:

<code class="language-csharp">string path = "C:\Program Files\hello.txt";
string fileName = Path.GetFileNameWithoutExtension(path);</code>

Path class provides a set of methods for operation and extraction of file path information. By using these methods, we can simplify the code and improve its readability.

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