c# 强制删除文件

 Process tool = new Process();
            tool.StartInfo.FileName = "handle.exe"; 
            tool.StartInfo.Arguments = fileName + " /accepteula";
            tool.StartInfo.UseShellExecute = false; 
            tool.StartInfo.RedirectStandardOutput = true; 
            tool.Start(); 
            tool.WaitForExit(); 
            string outputTool = tool.StandardOutput.ReadToEnd();
            string matchPattern = @"(?<=\s+pid:\s+)\b(\d+)\b(?=\s+)";
            foreach (Match match in Regex.Matches(outputTool, matchPattern)) 
            { 
                Process.GetProcessById(int.Parse(match.Value)).Kill();
            }

 

c# 删除程序占用的文件，清理删除文件，彻底删除文件，解除文件占用

    文件打开时，以    共享读写模式    打开   

FileStream inputStream = new FileStream(name, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
 p.BackgroundImage = new Bitmap(inputStream);
 inputStream.Dispose();

删除文件

public void WipeFile(string filename, int timesToWrite)
		{
			try
			{
				if (File.Exists(filename))
				{
					//设置文件的属性为正常，这是为了防止文件是只读
					File.SetAttributes(filename, FileAttributes.Normal);
					//计算扇区数目
					double sectors = Math.Ceiling(new FileInfo(filename).Length / 512.0);
					// 创建一个同样大小的虚拟缓存
					byte[] dummyBuffer = new byte[512];
					// 创建一个加密随机数目生成器
					RNGCryptoServiceProvider rng = new RNGCryptoServiceProvider();
					// 打开这个文件的FileStream
					FileStream inputStream = new FileStream(filename, FileMode.Open, FileAccess.Write, FileShare.ReadWrite);
					for (int currentPass = 0; currentPass < timesToWrite; currentPass++)
					{
						// 文件流位置
						inputStream.Position = 0;
						//循环所有的扇区
						for (int sectorsWritten = 0; sectorsWritten < sectors; sectorsWritten++)
						{
							//把垃圾数据填充到流中
							rng.GetBytes(dummyBuffer);
							// 写入文件流中
							inputStream.Write(dummyBuffer, 0, dummyBuffer.Length);
						}
					}
					// 清空文件
					inputStream.SetLength(0);
					// 关闭文件流
					inputStream.Close();
					// 清空原始日期需要
					DateTime dt = new DateTime(2037, 1, 1, 0, 0, 0);
					File.SetCreationTime(filename, dt);
					File.SetLastAccessTime(filename, dt);
					File.SetLastWriteTime(filename, dt);
					// 删除文件
					File.Delete(filename);
				}
			}
			catch (Exception)
			{
			}
		}