Add project files.

NvidiaCleaner.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.27130.2024
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NvidiaCleaner", "NvidiaCleaner\NvidiaCleaner.csproj", "{585F40B9-4B50-4032-9E27-5865DFA40409}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{585F40B9-4B50-4032-9E27-5865DFA40409}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{585F40B9-4B50-4032-9E27-5865DFA40409}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{585F40B9-4B50-4032-9E27-5865DFA40409}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{585F40B9-4B50-4032-9E27-5865DFA40409}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {F01FE2C7-79F0-4DD9-B598-26ADE46D5335}
+	EndGlobalSection
+EndGlobal

NvidiaCleaner/App.config

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+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
+    </startup>
+</configuration>

NvidiaCleaner/Lib/NVC.cs

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+using System;
+using System.IO;
+
+namespace NvidiaCleaner.Lib
+{
+    class NVC
+    {
+        //Calculates the directory size by checking each and every files' size's in directory and sub-directories.
+        public static long GetDirectorySize(string path)
+        {
+            string[] a = Directory.GetFiles(path, "*.*", SearchOption.AllDirectories);
+            long b = 0;
+            foreach (var name in a)
+            {
+                FileInfo info = new FileInfo(name);
+                b += info.Length;
+            }
+            return b;
+        }
+
+        //Byte to desired significance converter. KB, MB, GB only.
+        public static double SizeConvert(long b, string desired)
+        {
+            long sizeKB = b / 1024;
+            int sizeMB = (int)sizeKB / 1024;
+            double sizeGB = sizeMB / 1024.0;
+
+            switch (desired)
+            {
+                case "KB":
+                    return sizeKB;
+                case "MB":
+                    return sizeMB;
+                case "GB":
+                    return sizeGB;
+                default:
+                    return 0.0;
+            }
+        }
+
+    }
+}