Perform null check when calling Start on DriverService (#8083)

* Perform null check when calling Start on DriverService * Updates documentation Co-authored-by: David Burns <[email protected]>
SeleniumHQ · Mar 5, 2020 · 73e6405 · 73e6405
1 parent b067768
commit 73e6405
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/dotnet/src/webdriver/DriverService.cs b/dotnet/src/webdriver/DriverService.cs
@@ -250,11 +250,14 @@ public void Dispose()
         }
 
         /// <summary>
-        /// Starts the DriverService.
+        /// Starts the DriverService if it is not already running.
         /// </summary>
         [SecurityPermission(SecurityAction.Demand)]
         public void Start()
         {
+            if(this.driverServiceProcess != null)
+                return;
+
             this.driverServiceProcess = new Process();
             this.driverServiceProcess.StartInfo.FileName = Path.Combine(this.driverServicePath, this.driverServiceExecutableName);
             this.driverServiceProcess.StartInfo.Arguments = this.CommandLineArguments;