I have combined several sources to produce the code below, which I am currently using. I have also removed the Windows.Forms references so I can use it from console and WPF applications without additional references. using System; using System.Runtime.InteropServices; public class MouseOperations { [Flags] public enum MouseEventFlags { LeftDown = 0x00000002, LeftUp = 0x00000004, MiddleDown … Read more
Yes, the performance difference is significant. See the KB article “How to improve string concatenation performance in Visual C#”. I have always tried to code for clarity first, and then optimize for performance later. That’s much easier than doing it the other way around! However, having seen the enormous performance difference in my applications between … Read more
using System.Linq; new String(str.Reverse().ToArray());
You can do it with linq var xml = XDocument.Load(@”path”, LoadOptions.SetLineInfo); var lineNumbers = xml.Descendants() .Where(x =>!x.Descendants().Any() && //exact node contains the value x.Value.Contains(“Acknowledgments”)) .Cast<IXmlLineInfo>() .Select(x => x.LineNumber);
According to this question: FileSystemWatcher vs polling to watch for file changes it is mostly a problem of the InternalBufferSize try to push that value a little up. But there are also some situations, where even that won’t work e.g. network shares. The alternative would be polling as said in the other question, which means … Read more
add using System.Data; using System.Data.SqlClient; namespace to your file
A starting point. Then what you want to do with the contents of the file is up to you using System.IO; // <- required for File and StreamReader classes static void Main(string[] args) { if(args != null && args.Length > 0) { if(File.Exists(args[0])) { using(StreamReader sr = new StreamReader(args[0])) { string line = sr.ReadLine(); …….. … Read more
just substract two dates TimeSpan diff = date2.Subtract(date1); if(diff.Hours > 30) { //do action; }
You cannot do it for local variables like this. For member fields you can use reflection; for locals, the simplest approach is to use Dictionary, for example, like this: IDictionary<string,string> vars = new Dictionary<string,string> { {“one”, “find”} , {“two”, “cancel”} }; combobox1.text = vars[“one”];
What is the cause? Bottom Line You are trying to use something that is null (or Nothing in VB.NET). This means you either set it to null, or you never set it to anything at all. Like anything else, null gets passed around. If it is null in method “A”, it could be that method … Read more