From 3ea0334cd39fb1ede16ce8c09dd99de86c77f608 Mon Sep 17 00:00:00 2001
From: Jackson T <jthuraisamy@users.noreply.github.com>
Date: Mon, 14 Sep 2020 06:18:02 -0700
Subject: [PATCH] Update MainForm.cs

---
 ioctlpus/MainForm.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/ioctlpus/MainForm.cs b/ioctlpus/MainForm.cs
index 1c53fc3..ad0292c 100644
--- a/ioctlpus/MainForm.cs
+++ b/ioctlpus/MainForm.cs
@@ -191,6 +191,7 @@ private void btnSend_Click(object sender, EventArgs e)
             uint ioctl = Convert.ToUInt32(tbIOCTL.Text, 16);
             DeviceIoControl(sfh, ioctl, inputBuffer, inputSize, outputBuffer, outputSize, ref returnedBytes, IntPtr.Zero);
             int errorCode = Marshal.GetLastWin32Error();
+            CloseHandle(sfh);
 
             DynamicByteProvider requestData = new DynamicByteProvider(inputBuffer);
             hbInput.ByteProvider = requestData;