title: C# - How to use Regex to replace NULL character?
body: <p>I have the following string:</p>
  
  <pre><code>&lt; \0\"\0E\0x\0t\0e\0n\0s\0i\0b\0i\0l\0i\0t\0y\0,\0v\0e\0r\0s\0i\0o\0n\0=\0\\\0\"\07\0.\00\0.\03\03\00\00\0.\00\0\\\0\"\0,\0p\0u\0b\0l\0i\0c\0K\0e\0y\0T\0o\0k\0e\0n\0=\0\\\0\"\0B\00\03\0F\05\0F\07\0F\01\01\0D\05\00\0A\03\0A\0\\\0\"\0,\0f\0i\0l\0e\0V\0e\0r\0s\0i\0o\0n\0=\0\\\0\"\07\0.\00\0.\09\04\06\06\0.\01\0\\\0\"\0,\0c\0u\0l\0t\0u\0r\0e\0=\0\\\0\"\0n\0e\0u\0t\0r\0a\0l\0\\\0\"\0\"\0=\0h\0e\0x\0(\07\0)\0:\07\08\0,\0\\\0"
  </code></pre>
  
  <p>In notepad++ it looks something like: 
  <a href="https://i.stack.imgur.com/wha6U.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wha6U.jpg" alt="enter image description here"></a></p>
  
  <p>I would like to replace all "NULL" instances using Regex, but I can't seem to get the correct search pattern. This is my code:</p>
  
  <pre><code>        FileInfo file = new FileInfo(path);
          string line;
          using (StreamReader reader = new StreamReader(file.FullName))
          {
              while ((line = reader.ReadLine()) != null)
              {
                  Regex rgx = new Regex(@"^[\00|\0]");
                  line = rgx.Replace(line, "");
  
                  System.Console.WriteLine(line);
                  CurrentLine++;
              }
          }
  </code></pre>
  
  <p>However, this does not appear to be replacing any text. What would the correct search pattern for this be? </p>