class Program
{
    static void Main(string[] args)
    {
        SaveFile("file.txt");
        Console.ReadLine();
    }
    public static void SaveFile(string fileName)
    {
        try
        {
            FileStream fs = new FileStream(fileName, FileMode.Create);
        }
        catch (Exception ex)
        {
            Console.WriteLine("File open error");
            throw new IOException();
        }
    }
}

[HandleProcessCorruptedStateExceptions]
public static void SaveFile(string fileName)
{
    try
    {
        FileStream fs = new FileStream(fileName, FileMode.Create);
    }
    catch (Exception ex)
    {
        Console.WriteLine("File open error");
        throw new IOException();
    }
}

<?xml version="1.0"?>
<configuration>

  <runtime>
    <legacyCorruptedStateExceptionsPolicy enabled="true"/>
  </runtime>
</configuration>