摘要：stringserverAction="设置";ServerAction sAction = (ServerAction)Enum.Parse(typeof(ServerAction), serverAction); if (Enum.IsDefined(typeof(ServerAction), sAction)) { //ok } 阅读全文

摘要：返回单位：米static double Distance(double lon1, double lat1, double lon2, double lat2) { double R = 6378137; //地球半径 lat1 = lat1 * Math.PI / 180.0; lat2 = lat2 * Math.PI / 180.0; double sa2 = Math.Sin((lat1 - lat2) / 2.0); double sb2... 阅读全文

摘要：using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Reflection;namespace MethodInfoInvokeDemo{ public class ReflectTest { public void MethodWithNoParaNoReturn() { Console.WriteLine("不带参数且不返回值的方法"); } public strin... 阅读全文

摘要：public static Bitmap RotateImage(Image image, float angle) { if (image == null) throw new ArgumentNullException("image"); float dx = image.Width / 2.0f; float dy = image.Height / 2.0f; Bitmap rotatedBmp = new Bitmap(image.Width, image... 阅读全文