1            //检查文件是否存在 2             File.Exists(@"c:\my folder\filename"); 3             try { File.Delete(@"c:\jihua.cnblogs.com.txt"); } 4             catch 5             { 6                 MessageBox.Show("删除失败", "jihua.cnblogs.com"); 7             } 8             try { File.Create(@"c:\jihua.cnblogs.com.txt"); } 9             catch10             {11                 MessageBox.Show("创建失败", "jihua.cnblogs.com");12             }13             try { File.Move(@"c:\jihua.cnblogs.com.txt", @"c:\new.jihua.cnblogs.com.txt"); }14             catch15             {16                 MessageBox.Show("移动失败", "jihua.cnblogs.com");17             }18             //打开文件19             if (Msg.AskQuestion("是否打开文件？"))20             {21                 System.Diagnostics.Process.Start(filename);22             }23             

            bool exists = Directory.Exists(@"c:\my folder");//检查文件夹是否存            try { Directory.Delete(@"c:\my folder"); }            catch            {            MessageBox.Show("删除失败", "jihua.cnblogs.com");            }            try { Directory.CreateDirectory(@"c:\my folder"); }            catch            {            MessageBox.Show("创建失败","jihua.cnblogs.com");            }            try { Directory.Move(@"c:\my folder",@"d:\folder"); }            catch            {            MessageBox.Show("移动失败", "jihua.cnblogs.com");            }