From be728e1b291fa88418e8dc4ea7141b216cc7cfb6 Mon Sep 17 00:00:00 2001
From: David Hall <dahall@byu.net>
Date: Mon, 2 Sep 2019 17:09:01 -0600
Subject: [PATCH] Added extension methods that use FormatMessage to an errors
 descriptive text.

---
 PInvoke/Kernel32/ErrHandlingApi.cs | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/PInvoke/Kernel32/ErrHandlingApi.cs b/PInvoke/Kernel32/ErrHandlingApi.cs
index b9200284..830cee92 100644
--- a/PInvoke/Kernel32/ErrHandlingApi.cs
+++ b/PInvoke/Kernel32/ErrHandlingApi.cs
@@ -1308,4 +1308,28 @@ namespace Vanara.PInvoke
 			public SafeExceptionHandlerHandle(IntPtr handle) : base(handle, RemoveVectoredExceptionHandler) { }
 		}
 	}
+
+	public static class WinErrExtensions
+	{
+		/// <summary>Gets the system message for the provided system error with optional parameters.</summary>
+		/// <param name="err">The error.</param>
+		/// <param name="args">The arguments.</param>
+		/// <returns>The formatted system message.</returns>
+		public static string FormatMessage(this IErrorProvider err, params object[] args)
+		{
+			try { return Kernel32.FormatMessage((uint)err.ToHRESULT(), args); }
+			catch { return string.Empty; }
+		}
+
+		/// <summary>Gets the system message for the provided system error with optional parameters.</summary>
+		/// <param name="err">The error.</param>
+		/// <param name="hLib">A handle to the module that contains the message table to search.</param>
+		/// <param name="args">The arguments.</param>
+		/// <returns>The formatted system message.</returns>
+		public static string FormatMessage(this IErrorProvider err, HINSTANCE hLib, params object[] args)
+		{
+			try { return Kernel32.FormatMessage((uint)err.ToHRESULT(), args, hLib); }
+			catch { return string.Empty; }
+		}
+	}
 }
\ No newline at end of file