To get the text of an external window you could use the GetForegroundWindow and the GetWindowTextAPI functions. Here is a small example of its usage: public partial class Form1 :
The default designer that comes with the Web Controls is great but there are times when you might need to customize it. It’s pretty easy to do. You need to
A quick and dirty way to see if the application’s current platform is 64 Bit or 32 Bit is to test the size of the System.IntPtr variable, as shown in
The?best?way?to?copy?pictures?in?C#?is?most?probably?with?the?use?of?the?BitBlt?API.?Here?is?a?small?example?of?its?implementation: ????public?partial?class?Form1?:?Form ????{ ????????const?int?SRCCOPY?=?0xcc0020; ????????[System.Runtime.InteropServices.DllImportAttribute(“gdi32.dll”)] ????????private?static?extern?int?BitBlt( ??????????IntPtr?hdcDest,?????//?handle?to?destination?DC?(device?context) ??????????int?nXDest,?????????//?x-coord?of?destination?upper-left?corner ??????????int?nYDest,?????????//?y-coord?of?destination?upper-left?corner ??????????int?nWidth,?????????//?width?of?destination?rectangle ??????????int?nHeight,????????//?height?of?destination?rectangle ??????????IntPtr?hdcSrc,??????//?handle?to?source?DC ??????????int?nXSrc,??????????//?x-coordinate?of?source?upper-left?corner ??????????int?nYSrc,??????????//?y-coordinate?of?source?upper-left?corner ??????????System.Int32?dwRop??//?raster?operation?code ??????????); ????????public?Form1() ????????{ ????????????InitializeComponent(); ????????} ????????private?void?Form1_Paint(object?sender,?PaintEventArgs?e) ????????{ ????????????Graphics?g?=?e.Graphics; ????????????g.FillRectangle(Brushes.White,?ClientRectangle); ????????????g.DrawRectangle(Pens.Black,?10,?10,?40,?40); ????????????IntPtr?dc?=?g.GetHdc(); ????????????BitBlt(dc,?70,?0,?60,?60,?dc,?0,?0,?SRCCOPY); ????????????g.ReleaseHdc(dc); ????????} ????}
Unlike Visual Basic, C# doesn’t have built-in string methods to extract parts of string from the Left, Right or a location specified through Mid. Unfortunately you have to create the
Method Overloading means that you can have different methods having the same code, but with different parameters. Here is an example: class MyMath{ public static int Add(int number1, int number2)
Add the following function: public void DownloadFile(string urlAddress, string location) { using (webClient = new WebClient()) { webClient.DownloadFileCompleted += new AsyncCompletedEventHandler(Completed); webClient.DownloadProgressChanged += new DownloadProgressChangedEventHandler(ProgressChanged); Uri URL = urlAddress.StartsWith(“http://”, StringComparison.OrdinalIgnoreCase)
There is a very quick and easy to determine your CPU usage. You can use the following code. All you need to do is to add a Timer and set
In order to calculate a file’s size in C#, you can use the FileInfo object and create some logic to calculate the physical KB, MB or GB of a file.