bug fix

v2rayN/v2rayN/Common/StringEx.cs

@@ -80,5 +80,15 @@ namespace v2rayN
 
             return char.ToUpper(value[0]) + value.Substring(1);
         }
+
+        public static string AppendQuotes(this string value)
+        {
+            if (string.IsNullOrEmpty(value))
+            {
+                return string.Empty;
+            }
+
+            return $"\"{value}\"";
+        }
     }
 }

v2rayN/v2rayN/Handler/UpdateHandle.cs

@@ -54,7 +54,7 @@ namespace v2rayN.Handler
                             StartInfo = new ProcessStartInfo
                             {
                                 FileName = "v2rayUpgrade.exe",
-                                Arguments = $"\"{fileName}\"",
+                                Arguments = fileName.AppendQuotes(),                                
                                 WorkingDirectory = Utils.StartupPath()
                             }
                         };
@@ -364,7 +364,7 @@ namespace v2rayN.Handler
                 }
 
                 using Process p = new();
-                p.StartInfo.FileName = filePath;
+                p.StartInfo.FileName = filePath.AppendQuotes();
                 p.StartInfo.Arguments = coreInfo.versionArg;
                 p.StartInfo.WorkingDirectory = Utils.StartupPath();
                 p.StartInfo.UseShellExecute = false;

v2rayN/v2rayN/ViewModels/MainWindowViewModel.cs

@@ -1388,7 +1388,7 @@ namespace v2rayN.ViewModels
                 UseShellExecute = true,
                 Arguments = Global.RebootAs,
                 WorkingDirectory = Utils.StartupPath(),
-                FileName = Utils.GetExePath(),
+                FileName = Utils.GetExePath().AppendQuotes(),
                 Verb = "runas",
             };
             try