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17/10/2009 Talking about Visual Studio Beta 1 For Everyone
Quote Visual Studio Beta 1 For Everyone 5/12/2008 SurpriseI really surprised by new changes in Widows Live. In my i existing things are:
2/12/2008 My WebSite19/9/2008 Clear Your TracesNote: From now, all the code samples, can be dependent on the previous posts.Suppose that you want to clear all your traces in a computer, including:
The first one we want to clean is "Internet Cache". To do that, we must find its folder path using Environment.SpecialFolder.InternetCache. After that, by looping on each folder, we delete all of files. To make sure that no error will occurs (some files maybe in use), let's create a method, which deletes file in try..catch: 1: private static void DeleteFileSystem(string fileSystem) 2: {3: try 4: {5: Directory.Delete(fileSystem, true); 6: }7: catch 8: {9: try 10: { 11: File.Delete(fileSystem); 12: }13: catch 14: { 15: } 16: } 17: } 1: Directory.GetDirectories(Environment.GetFolderPath(Environment.SpecialFolder.InternetCache) + @"\Content.IE5\").ForEach(dir => Directory.GetFiles(dir).ForEach(DeleteFileSystem)); 1: Directory.GetDirectories(Environment.GetFolderPath(Environment.SpecialFolder.InternetCache) + @"\Content.IE5\").ForEach(DeleteFileSystem); 1: Directory.GetFiles(Environment.GetFolderPath(Environment.SpecialFolder.Recent)).ForEach(DeleteFileSystem);Internet URL History, Forms; "Run" dialog box history and recent programs in Start menu, are kept in Windows Registry. As before, let's create a method to delete registry keys in try...catch: 1: private static void DeleteRegKey(string regKey) 2: {3: try 4: { 5: Registry.CurrentUser.DeleteSubKeyTree(regKey); 6: }7: catch 8: { 9: } 10: }1: new string[] 2: {3: @"Software\Microsoft\Internet Explorer\IntelliForms" // Forms 4: , @"Software\Microsoft\Internet Explorer\TypedURLs" // Internet URL History 5: , @"Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU" //Run 6: , @"Software\Microsoft\Windows\CurrentVersion\Explorer\UserAssist\{75048700-EF1F-11D0-9888-006097DEACF9}\Count" //Recent Programs 7: , @"Software\Microsoft\Windows\CurrentVersion\Explorer\RecentDocs" 8: }.ForEach(DeleteRegKey);It's almost done. Finally, we clean Recycle Bin. To do that, we must use an API: SHEmptyRecycleBin. So let's add an external method to our class, and decorate it with DllImport: 1: [DllImport("Shell32.dll", CharSet = CharSet.Unicode)] 2: static extern uint SHEmptyRecycleBin(IntPtr hwnd, string pszRootPath, RecycleFlags dwFlags); 1: try 2: {3: SHEmptyRecycleBin(IntPtr.Zero, null, RecycleFlags.SHERB_NOCONFIRMATION | RecycleFlags.SHERB_NOPROGRESSUI | RecycleFlags.SHERB_NOSOUND); 4: }5: catch 6: { 7: }static class Program { [DllImport("Shell32.dll", CharSet = CharSet.Unicode)]static extern uint SHEmptyRecycleBin(IntPtr hwnd, string pszRootPath, RecycleFlags dwFlags); static void Main(string[] args) { Directory.GetDirectories(Environment.GetFolderPath(Environment.SpecialFolder.InternetCache) + @"\Content.IE5\").ForEach(dir => Directory.GetFiles(dir).ForEach(DeleteFileSystem)); Directory.GetDirectories(Environment.GetFolderPath(Environment.SpecialFolder.InternetCache) + @"\Content.IE5\").ForEach(DeleteFileSystem);Directory.GetFiles(Environment.GetFolderPath(Environment.SpecialFolder.Recent)).ForEach(DeleteFileSystem); new string[] { @"Software\Microsoft\Internet Explorer\IntelliForms" // Forms , @"Software\Microsoft\Internet Explorer\TypedURLs" // Internet URL History , @"Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU" //Run , @"Software\Microsoft\Windows\CurrentVersion\Explorer\UserAssist\{75048700-EF1F-11D0-9888-006097DEACF9}\Count" //Recent Programs , @"Software\Microsoft\Windows\CurrentVersion\Explorer\ComDlg32\LastVisitedMRU" //?? , @"Software\Microsoft\Windows\CurrentVersion\Explorer\ComDlg32\OpenSaveMRU" //? , @"Software\Microsoft\Windows\CurrentVersion\Explorer\RecentDocs", @"Software\Microsoft\Windows\CurrentVersion\Explorer\StreamMRU" }.ForEach(DeleteRegKey); try {uint result = SHEmptyRecycleBin(IntPtr.Zero, null, RecycleFlags.SHERB_NOCONFIRMATION | RecycleFlags.SHERB_NOPROGRESSUI | RecycleFlags.SHERB_NOSOUND); } catch {} } private static void DeleteFileSystem(string fileSystem) { try { Directory.Delete(fileSystem, true);} catch { try {File.Delete(fileSystem); } catch {} } } private static void DeleteRegKey(string regKey) { try {Registry.CurrentUser.DeleteSubKeyTree(regKey); } catch {} } private static void ForEach<TSource>(this IEnumerable<TSource> source, Action<TSource> actor) {foreach (var item in source) actor(item); } } 11/9/2008 Some Extension Methods for "IEnumerable"sSystem.Linq.Enumerable has a lot of extension methods to make it easy to use the classes which are inherited from System.Collections.IEnumerable and System.Collections.Generic.IEnumerable<T>. To extend this class in my projects, I created a class with some other extension methods, named"Mohammad.Library.CoreLib.Helpers.EnumerableHelper". Here, I show you a set of these methods: 1: public static void ForEach<TSource>(this IEnumerable<TSource> source, Action<TSource> actor) 2: {3: foreach (TSource item in source) 4: actor(item); 5: }6: public static void ForEach(this IEnumerable source, Action<Object> actor) 7: {8: foreach (Object item in source) 9: actor(item); 10: }11: public static void ForEach(this IDictionary source, Action<Object, Object> actor) 12: {13: foreach (object Key in source.Keys) 14: actor(Key, source[Key]); 15: }16: public static void ForEach<TKey, TValue>(this IDictionary<TKey, TValue> source, Action<TKey, TValue> actor) 17: {18: foreach (TKey Key in source.Keys) 19: actor(Key, source[Key]); 20: }1: public static Collection<TSource> ToCollection<TSource>(this IEnumerable<TSource> source) 2: {3: Collection<TSource> result = new Collection<TSource>(); 4: source.ForEach(result.Add);5: return result; 6: } 7: 8: public static IEnumerable IfZero<TSource>(this IEnumerable source, IEnumerable defaultSource) 9: {10: return source.Cast<object>().Any() ? source : defaultSource; 11: }1: public static T Fold<T, U>(this IEnumerable<U> items, Func<T, U, T> func, T acc) 2: {3: foreach (var item in items) 4: acc = func(acc, item); 5: 6: return acc; 7: } 8: 9: public static T FoldLeft<T, U>(this IList<U> list, Func<T, U, T> func, T acc) 10: {11: for (int index = 0; index < list.Count; index++) 12: acc = func(acc, list[index]); 13: 14: return acc; 15: } 16: 17: public static T FoldRight<T, U>(this IList<U> list, Func<T, U, T> func, T acc) 18: {19: for (int index = list.Count - 1; index >= 0; index--) 20: acc = func(acc, list[index]); 21: 22: return acc; 23: } 24: 25: public static void ForIndex<T>(this IEnumerable<T> items, Action<int, T> action) 26: {27: int index = 0; 28: foreach (var item in items) 29: { 30: action(index, item); 31: index++; 32: } 33: }One Really Big Query Expression! 1: var pixelsQuery =2: from y in Enumerable.Range(0, screenHeight) 3: let recenterY = -(y - (screenHeight / 2.0)) / (2.0 * screenHeight)4: select from x in Enumerable.Range(0, screenWidth) 5: let recenterX = (x - (screenWidth / 2.0)) / (2.0 * screenWidth) 6: let point = Vector.Norm(Vector.Plus(scene.Camera.Forward, 7: Vector.Plus(Vector.Times(recenterX, scene.Camera.Right), 8: Vector.Times(recenterY, scene.Camera.Up))))9: let ray = new Ray { Start = scene.Camera.Pos, Dir = point } 10: let computeTraceRay = (Func<Func<TraceRayArgs, Color>, Func<TraceRayArgs, Color>>) 11: (f => traceRayArgs =>12: (from isect in 13: from thing in traceRayArgs.Scene.Things 14: select thing.Intersect(traceRayArgs.Ray)15: where isect != null 16: orderby isect.Dist 17: let d = isect.Ray.Dir 18: let pos = Vector.Plus(Vector.Times(isect.Dist, isect.Ray.Dir), isect.Ray.Start) 19: let normal = isect.Thing.Normal(pos) 20: let reflectDir = Vector.Minus(d, Vector.Times(2 * Vector.Dot(normal, d), normal))21: let naturalColors = from light in traceRayArgs.Scene.Lights 22: let ldis = Vector.Minus(light.Pos, pos) 23: let livec = Vector.Norm(ldis)24: let testRay = new Ray { Start = pos, Dir = livec } 25: let testIsects = from inter in 26: from thing in traceRayArgs.Scene.Things 27: select thing.Intersect(testRay)28: where inter != null 29: orderby inter.Dist 30: select inter 31: let testIsect = testIsects.FirstOrDefault()32: let neatIsect = testIsect == null ? 0 : testIsect.Dist 33: let isInShadow = !((neatIsect > Vector.Mag(ldis)) || (neatIsect == 0))34: where !isInShadow 35: let illum = Vector.Dot(livec, normal) 36: let lcolor = illum > 0 ? Color.Times(illum, light.Color) : Color.Make(0, 0, 0) 37: let specular = Vector.Dot(livec, Vector.Norm(reflectDir)) 38: let scolor = specular > 0 39: ? Color.Times(Math.Pow(specular, isect.Thing.Surface.Roughness), light.Color) 40: : Color.Make(0, 0, 0) 41: select Color.Plus(Color.Times(isect.Thing.Surface.Diffuse(pos), lcolor), 42: Color.Times(isect.Thing.Surface.Specular(pos), scolor)) 43: let reflectPos = Vector.Plus(pos, Vector.Times(.001, reflectDir)) 44: let reflectColor = traceRayArgs.Depth >= MaxDepth 45: ? Color.Make(.5, .5, .5) 46: : Color.Times(isect.Thing.Surface.Reflect(reflectPos), 47: f(new TraceRayArgs(new Ray { Start = reflectPos, Dir = reflectDir }, 48: traceRayArgs.Scene, 49: traceRayArgs.Depth + 1))) 50: select naturalColors.Aggregate(reflectColor, (color, natColor) => Color.Plus(color, natColor))) 51: .DefaultIfEmpty(Color.Background).First()) 52: let traceRay = Y(computeTraceRay)53: select new { X = x, Y = y, Color = traceRay(new TraceRayArgs(ray, scene, 0)) }; 54: 55: foreach (var row in pixelsQuery) 56: foreach (var pixel in row) 57: setPixel(pixel.X, pixel.Y, pixel.Color.ToDrawingColor());
Reference: 9/9/2008 IDE Enhancements: What's a Visualizer?Hi, As you surely know, while debugging your project, you can use "QuickWatch" to view the content of the variables in the current scope.
In a few cases, you can also use Visualizers (
Now what if I want to see my own data types, or the types which IDE's visualizer does not support? Let's suppose that you want to see an Image in debug time. You can write a custom visualizer. In order to do that, you must create a Class Library (.dll), create your visualizers, put your dll in a specific directory. For example, let's create an Image Visualizer step by step: Open Visual Studio, go to File > New Project > Class Library. IDE creates a class library and adds a class, by default. Rename the class to "Image". Each visualizer must be inherited from Microsoft.VisualStudio.DebuggerVisualizers.DialogDebuggerVisualizer which is located in Microsoft.VisualStudio.DebuggerVisualizers.dll. So we must add it's reference to our project by right clicking on the project and choosing "Add Reference" item, in Solution Explorer. now inherit your "Image" class from "DialogDebuggerVisualizer". DialogDebuggerVisualizer has an abstract method: "Show". As you can guess, this method must be implemented in our class. So paste the following code into our "Image" class: protected override void Show(IDialogVisualizerService windowService, IVisualizerObjectProvider objectProvider) { } System.Drawing.Image image = (System.Drawing.Image)objectProvider.GetObject(); 1: Form form = new Form() 2: {3: Text = string.Format("Mohammad Image Visualizer {0} * {1}", image.Width, image.Height), 4: ClientSize = new System.Drawing.Size(image.Width, image.Height), 5: FormBorderStyle = FormBorderStyle.FixedToolWindow,6: ShowInTaskbar=false 7: };8: PictureBox pictureBox = new PictureBox() 9: { 10: Image = image, 11: Parent = form, 12: Dock = DockStyle.Fill, 13: }; 1: windowService.ShowDialog(form);1: [assembly: System.Diagnostics.DebuggerVisualizer(typeof(Mohammad.Library.Visualizers.Image), typeof(VisualizerObjectSource), Target = typeof(System.Drawing.Image), Description = "Mohammad Image Visualizer")] 2: namespace Mohammad.Library.Visualizers 3: {4: class Image : DialogDebuggerVisualizer 5: {6: protected override void Show(IDialogVisualizerService windowService, IVisualizerObjectProvider objectProvider) 7: { 8: System.Drawing.Image image = (System.Drawing.Image)objectProvider.GetObject();9: Form form = new Form() 10: {11: Text = string.Format("Mohammad Image Visualizer {0} * {1}", image.Width, image.Height), 12: ClientSize = new System.Drawing.Size(image.Width, image.Height), 13: FormBorderStyle = FormBorderStyle.FixedToolWindow,14: ShowInTaskbar=false 15: };16: PictureBox pictureBox = new PictureBox() 17: { 18: Image = image, 19: Parent = form, 20: Dock = DockStyle.Fill, 21: }; 22: windowService.ShowDialog(form); 23: } 24: } 25: }It's almost done. Now we must install our visualizer by pasting its output file to a specific folder. To do that, MSDN says: To install a visualizer
Ok, after installing, let's test the visualizer using a test windows application:
The visualizer is ready. Enjoy it! Have a good time. 5/9/2008 Some Converting methods1: #region ToBin 2: /// <summary> 3: /// Returns a string representing the binary value of a number. 4: /// </summary> 5: /// <param name="num">Required. Any valid numeric expression or String expression.</param> 6: /// <returns>Returns a string representing the binary value of a number.</returns> 7: public static string ToBin(this int num) 8: {9: return ConvertBase(num.ToString(), 10, 2); 10: }11: #endregion 12: 13: #region ToHex 14: /// <summary> 15: /// Returns a string representing the hexadecimal value of a number. 16: /// </summary> 17: /// <param name="num">Required. Any valid numeric expression or String expression.</param> 18: /// <returns>Returns a string representing the hexadecimal value of a number.</returns> 19: public static string ToHex(this int num) 20: {21: return num.ToString("X"); 22: }23: #endregion 24: 25: #region HexToDec 26: /// <summary> 27: /// Converts a hexadecimal number to decimal. 28: /// </summary> 29: /// <param name="hexNumber">Hexadecimal number</param> 30: /// <returns></returns> 31: public static int HexToDec(string hexNumber) 32: {33: return Convert.ToInt32(hexNumber, 16); 34: }35: #endregion 36: 37: #region ConvertBase 38: /// <summary> 39: /// Cast any number in any base to any number in any base. 40: /// </summary> 41: /// <param name="num"></param> 42: /// <param name="sourceBase"></param> 43: /// <param name="desctinationBase"></param> 44: /// <returns></returns> 45: public static string ConvertBase(string num, int sourceBase, int desctinationBase) 46: {47: return Convert.ToString(Convert.ToInt32(num, sourceBase), desctinationBase); 48: }49: #endregion 50: 51: #region BinToDec 52: /// <summary> 53: /// Converts a binary number to decimal. 54: /// </summary> 55: /// <param name="binaryNumber">Binary number</param> 56: /// <returns></returns> 57: public static int BinToDec(string binaryNumber) 58: {59: return ConvertBase(binaryNumber, 2, 10).ToIntNullable().Value; 60: } 61: 62: /// <summary> 63: /// Converts a binary array to decimal. 64: /// </summary> 65: /// <param name="bits">Binary array</param> 66: /// <returns></returns> 67: public static int BinToDec(this BitArray bits) 68: {69: return BinToDec(bits.Merge()); 70: }71: #endregion 72: 73: #region BinToHex 74: /// <summary> 75: /// Converts a binary string to hexadecimal 76: /// </summary> 77: /// <param name="binaryNumber">Binary number</param> 78: /// <returns>Hexadecimalled string</returns> 79: public static string BinToHex(string binaryNumber) 80: {81: return ConvertBase(binaryNumber, 2, 16); 82: }83: #endregion 84: 85: #region HexToBin 86: /// <summary> 87: /// Converts a hex string into binary values 88: /// </summary> 89: /// <param name="hex"></param> 90: /// <returns></returns> 91: public static string HexToBin(string hex) 92: {93: return ConvertBase(hex, 16, 2); 94: }95: #endregion Some useful extension methodsLet's suppose that we retrieved some data from database using by a datareader or a table. As you know both datareader and datatble's gathered data are object. Therefore, we must convert them to the actual data type, if we want to use them. For instance if the fist columns is an ID, it can be long or int. It can be easy done by using convert class. but an easier way is to create a set of extension methods in order to do this conversion. some things like these: 1: public static int ToInt(this object obj) 2: {3: return Convert.ToInt32(obj); 4: } 5: 6: public static int ToInt(this object obj, int defaultValue) 7: {8: if (obj == null) 9: return defaultValue; 10: return obj.ToString().ToIntNullable() ?? defaultValue; 11: } 12: 13: public static long ToLong(this object obj) 14: {15: return Convert.ToInt64(obj); 16: } 17: 18: public static int? ToIntNullable(this string str) 19: {20: int result; 21: return int.TryParse(str, out result) ? default(int?) : null; 22: } 23: 24: #region ToDouble 25: /// <summary> 26: /// Converts str to double 27: /// </summary> 28: /// <param name="str">object to convert</param> 29: /// <param name="defaultValue">Will be used if not succed.</param> 30: /// <returns>return converted number, if obj could be converted, otherwise defualtValue will be returned.</returns> 31: public static double ToDouble(string str, double defaultValue) 32: {33: return ToDouble(str) ?? defaultValue; 34: } 35: 36: public static double? ToDouble(string str) 37: {38: double num; 39: return double.TryParse(str.ToString(), out num) ? num : default(double?); 40: }29/8/2008 My 1st postIn the name of God
Hi all,
This is my 1st post in my live space. I'm not so expert in blogging. So i will have a lot of problems to do that. But I think it doesn't matter. The bigger problem is my poor English language. I'm Iranian. So English is not my main language. Please excuse me, if you see any lingual problems.
In this space I want to start to share my experiences in C# development. And I'll try to explain one or more of my experiences in each post. I'll show you some exmaple codes and maybe some simple project according to what i am talking about,
Please DO NOT FORGET to let me know, if you have any ideas, or suggestions or anything else.
With thanks,
Mohammad |
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