用C#删除文本文档

Question

FileMode里有创建，打开  但是我现在想删除一个文本文档怎么实现？

Answer 1

       if (File.Exists(Server.MapPath(path)))
        {
            File.Delete(Server.MapPath(path));
        } 如果文本文档被打开，需要先关闭，SendMessage（handle，WM_CLOSE,NULL,NULL）

Answer 2

using System;
using System.IO;class Test 
{
    public static void Main() 
    {
        string path = @"c:\temp\MyTest.txt";
        try 
        {
            using (StreamWriter sw = File.CreateText(path)) {}
            string path2 = path + "temp";            // Ensure that the target does not exist.
            File.Delete(path2);            // Copy the file.
            File.Copy(path, path2);
            Console.WriteLine("{0} was copied to {1}.", path, path2);            // Delete the newly created file.
            File.Delete(path2);
            Console.WriteLine("{0} was successfully deleted.", path2);
        } 
        catch (Exception e) 
        {
            Console.WriteLine("The process failed: {0}", e.ToString());
        }
    }
} 
创建并删除文件!

Answer 3

 private string strFileName = "";
        public Form1()
        {
            InitializeComponent();
        }
        private bool CheckSourse()
        {
            if (strFileName == "" || !File.Exists(strFileName))
            {
                MessageBox.Show("请选择文件!");
                return false;
            }
            else
                return true;
        }private void btnDel_Click(object sender, EventArgs e)
        {
            if (!CheckSourse())
                return;            try
            {
                File.Delete(strFileName);
                            }
            catch (Exception ex)
            {
                throw ex;
            }        }