From 4795340999fe5ccf2a1b9789d2b8179c5097cefa Mon Sep 17 00:00:00 2001
From: Syrone Wong <wong.syrone@gmail.com>
Date: Wed, 10 Aug 2016 14:15:48 +0800
Subject: [PATCH] Check whether form handle been created(#650)

Signed-off-by: Syrone Wong <wong.syrone@gmail.com>
---
 shadowsocks-csharp/View/LogForm.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/shadowsocks-csharp/View/LogForm.cs b/shadowsocks-csharp/View/LogForm.cs
index f804f781..d0818454 100644
--- a/shadowsocks-csharp/View/LogForm.cs
+++ b/shadowsocks-csharp/View/LogForm.cs
@@ -76,7 +76,7 @@ namespace Shadowsocks.View
 
             try
             {
-                if (trafficChart.InvokeRequired)
+                if (trafficChart.InvokeRequired && trafficChart.IsHandleCreated)
                 {
                     trafficChart.Invoke(new Action(() =>
                     {