Switched messageboxes to custom events

Common/PasswordGenerator.cs

@@ -3,6 +3,7 @@
 namespace Common;
 public static class PasswordGenerator
 {
+    public static Error? ExceptionOccured;
     private static string RandomStr(int length, bool no_symbols = false)
     {
         StringBuilder builder = new StringBuilder();
@@ -32,6 +33,8 @@ public static class PasswordGenerator
 
     public static string? New(string recipient, int length, bool no_symbols = false)
     {
-			return new ProcessBuilder().GetOutput("cmd.exe", $"echo {RandomStr(length, no_symbols)} | gpg --quiet --encrypt --recipient {recipient}");
+        ProcessBuilder pb = new ProcessBuilder();
+        pb.ProcessFailed += (e) => ExceptionOccured?.Invoke(e);
+		return pb.GetOutput("cmd.exe", $"echo {RandomStr(length, no_symbols)} | gpg --quiet --encrypt --recipient {recipient}");
     }
 }