diff --git a/src/Tizen.WindowSystem/src/KVMService.cs b/src/Tizen.WindowSystem/src/KVMService.cs
index f0c0550b0dd..e27fbd139aa 100644
--- a/src/Tizen.WindowSystem/src/KVMService.cs
+++ b/src/Tizen.WindowSystem/src/KVMService.cs
@@ -50,18 +50,12 @@ public class KVMService : IDisposable
         /// <since_tizen> 12 </since_tizen>
         public KVMService(TizenShell tzShell, IWindowProvider win)
         {
-            if (tzShell == null)
-            {
-                throw new ArgumentNullException(nameof(tzShell));
-            }
+            ArgumentNullException.ThrowIfNull(tzShell);
             if (tzShell.SafeHandle == null || tzShell.SafeHandle.IsInvalid)
             {
                 throw new ArgumentException("tzShell is not initialized.");
             }
-            if (win == null)
-            {
-                throw new ArgumentNullException(nameof(win));
-            }
+            ArgumentNullException.ThrowIfNull(win);
 
             _tzsh = tzShell;
             _tzshWin = WindowSystem.Interop.EcoreWl2.GetWindowId(win.WindowHandle);
diff --git a/src/Tizen.WindowSystem/src/QuickPanelClient.cs b/src/Tizen.WindowSystem/src/QuickPanelClient.cs
index 31f1ea00ee4..81dcadf9126 100644
--- a/src/Tizen.WindowSystem/src/QuickPanelClient.cs
+++ b/src/Tizen.WindowSystem/src/QuickPanelClient.cs
@@ -60,18 +60,12 @@ public class QuickPanelClient : IDisposable
         public QuickPanelClient(TizenShell tzShell, IWindowProvider win, QuickPanelCategory type)
         {
             int width = 0, height = 0;
-            if (tzShell == null)
-            {
-                throw new ArgumentNullException("tzShell");
-            }
+            ArgumentNullException.ThrowIfNull(tzShell);
             if (tzShell.SafeHandle == null || tzShell.SafeHandle.IsInvalid)
             {
                 throw new ArgumentException("tzShell is not initialized.");
             }
-            if (win == null)
-            {
-                throw new ArgumentNullException("win");
-            }
+            ArgumentNullException.ThrowIfNull(win);
 
             _tzsh = tzShell;
             _tzshWin = WindowSystem.Interop.EcoreWl2.GetWindowId(win.WindowHandle);
diff --git a/src/Tizen.WindowSystem/src/QuickPanelService.cs b/src/Tizen.WindowSystem/src/QuickPanelService.cs
index 73e5bcedfaf..167c52084e2 100644
--- a/src/Tizen.WindowSystem/src/QuickPanelService.cs
+++ b/src/Tizen.WindowSystem/src/QuickPanelService.cs
@@ -47,18 +47,12 @@ public class QuickPanelService : IDisposable
         /// <since_tizen> 12 </since_tizen>
         public QuickPanelService(TizenShell tzShell, IWindowProvider win, QuickPanelCategory type)
         {
-            if (tzShell == null)
-            {
-                throw new ArgumentNullException(nameof(tzShell));
-            }
+            ArgumentNullException.ThrowIfNull(tzShell);
             if (tzShell.SafeHandle == null || tzShell.SafeHandle.IsInvalid)
             {
                 throw new ArgumentException("tzShell is not initialized.");
             }
-            if (win == null)
-            {
-                throw new ArgumentNullException(nameof(win));
-            }
+            ArgumentNullException.ThrowIfNull(win);
 
             _tzsh = tzShell;
             _tzshWin = WindowSystem.Interop.EcoreWl2.GetWindowId(win.WindowHandle);
@@ -187,10 +181,7 @@ public void Hide()
         /// <exception cref="ArgumentNullException">Thrown when an argument is null.</exception>
         public void SetContentRegion(uint angle, params (int x, int y, int width, int height)[] regions)
         {
-            if (regions == null)
-            {
-                throw new ArgumentNullException(nameof(regions));
-            }
+            ArgumentNullException.ThrowIfNull(regions);
 
             var regionHandle = Interop.TizenShellRegion.Create(_tzsh.SafeHandle);
             if (regionHandle.IsInvalid)
@@ -224,10 +215,7 @@ public void SetContentRegion(uint angle, params (int x, int y, int width, int he
         /// <exception cref="ArgumentNullException">Thrown when an argument is null.</exception>
         public void SetHandlerRegion(uint angle, params (int x, int y, int width, int height)[] regions)
         {
-            if (regions == null)
-            {
-                throw new ArgumentNullException(nameof(regions));
-            }
+            ArgumentNullException.ThrowIfNull(regions);
 
             var regionHandle = Interop.TizenShellRegion.Create(_tzsh.SafeHandle);
             if (regionHandle.IsInvalid)
diff --git a/src/Tizen.WindowSystem/src/ScreensaverService.cs b/src/Tizen.WindowSystem/src/ScreensaverService.cs
index 9b8d65999ea..6008c50e83c 100644
--- a/src/Tizen.WindowSystem/src/ScreensaverService.cs
+++ b/src/Tizen.WindowSystem/src/ScreensaverService.cs
@@ -42,18 +42,12 @@ public class ScreensaverService : IDisposable
         /// <exception cref="ArgumentNullException">Thrown when an argument is null.</exception>
         public ScreensaverService(TizenShell tzShell, IWindowProvider win)
         {
-            if (tzShell == null)
-            {
-                throw new ArgumentNullException(nameof(tzShell));
-            }
+            ArgumentNullException.ThrowIfNull(tzShell);
             if (tzShell.SafeHandle == null || tzShell.SafeHandle.IsInvalid)
             {
                 throw new ArgumentException("tzShell is not initialized.");
             }
-            if (win == null)
-            {
-                throw new ArgumentNullException(nameof(win));
-            }
+            ArgumentNullException.ThrowIfNull(win);
 
             _tzsh = tzShell;
             _tzshWin = WindowSystem.Interop.EcoreWl2.GetWindowId(win.WindowHandle);
diff --git a/src/Tizen.WindowSystem/src/SoftkeyClient.cs b/src/Tizen.WindowSystem/src/SoftkeyClient.cs
index fe3e604a349..062dc36c9b7 100644
--- a/src/Tizen.WindowSystem/src/SoftkeyClient.cs
+++ b/src/Tizen.WindowSystem/src/SoftkeyClient.cs
@@ -47,18 +47,12 @@ public class SoftkeyClient : IDisposable
         /// <since_tizen> 12 </since_tizen>        
         public SoftkeyClient(TizenShell tzShell, IWindowProvider win)
         {
-            if (tzShell == null)
-            {
-                throw new ArgumentNullException(nameof(tzShell));
-            }
+            ArgumentNullException.ThrowIfNull(tzShell);
             if (tzShell.SafeHandle == null || tzShell.SafeHandle.IsInvalid)
             {
                 throw new ArgumentException("tzShell is not initialized.");
             }
-            if (win == null)
-            {
-                throw new ArgumentNullException(nameof(win));
-            }
+            ArgumentNullException.ThrowIfNull(win);
 
             _tzsh = tzShell;
             _tzshWin = WindowSystem.Interop.EcoreWl2.GetWindowId(win.WindowHandle);
diff --git a/src/Tizen.WindowSystem/src/SoftkeyService.cs b/src/Tizen.WindowSystem/src/SoftkeyService.cs
index 7c1f265d329..6bb2b6c330c 100644
--- a/src/Tizen.WindowSystem/src/SoftkeyService.cs
+++ b/src/Tizen.WindowSystem/src/SoftkeyService.cs
@@ -50,18 +50,12 @@ public class SoftkeyService : IDisposable
         /// <exception cref="ArgumentNullException">Thrown when a argument is null.</exception>
         public SoftkeyService(TizenShell tzShell, IWindowProvider win)
         {
-            if (tzShell == null)
-            {
-                throw new ArgumentNullException(nameof(tzShell));
-            }
+            ArgumentNullException.ThrowIfNull(tzShell);
             if (tzShell.SafeHandle == null || tzShell.SafeHandle.IsInvalid)
             {
                 throw new ArgumentException("tzShell is not initialized.");
             }
-            if (win == null)
-            {
-                throw new ArgumentNullException(nameof(win));
-            }
+            ArgumentNullException.ThrowIfNull(win);
 
             _tzsh = tzShell;
             _tzshWin = WindowSystem.Interop.EcoreWl2.GetWindowId(win.WindowHandle);
diff --git a/src/Tizen.WindowSystem/src/TaskbarService.cs b/src/Tizen.WindowSystem/src/TaskbarService.cs
index 4ac9ce61846..87dea26390c 100755
--- a/src/Tizen.WindowSystem/src/TaskbarService.cs
+++ b/src/Tizen.WindowSystem/src/TaskbarService.cs
@@ -44,18 +44,12 @@ public class TaskbarService : IDisposable
         /// <exception cref="ArgumentNullException">Thrown when a argument is null.</exception>
         public TaskbarService(TizenShell tzShell, IWindowProvider win, TaskbarPosition position = TaskbarPosition.Bottom)
         {
-            if (tzShell == null)
-            {
-                throw new ArgumentNullException(nameof(tzShell));
-            }
+            ArgumentNullException.ThrowIfNull(tzShell);
             if (tzShell.SafeHandle == null || tzShell.SafeHandle.IsInvalid)
             {
                 throw new ArgumentException("tzShell is not initialized.");
             }
-            if (win == null)
-            {
-                throw new ArgumentNullException(nameof(win));
-            }
+            ArgumentNullException.ThrowIfNull(win);
 
             _tzsh = tzShell;
             _tzshWin = WindowSystem.Interop.EcoreWl2.GetWindowId(win.WindowHandle);