C# 打开文件

//打开文件public string[] openFile(){    //打开文件    OpenFileDialog dialog = new OpenFileDialog();    dialog.InitialDirectory = System.AppDomain.CurrentDomain.BaseDirectory; //使用当前目录作为初始目录    dialog.Filter = "txt文件(*.txt)|*.txt";   //文件过滤，仅打开txt    dialog.Multiselect = true;                //可选中多个文件    //返回获取到的文件名    return dialog.ShowDialog().Value ? dialog.FileNames : null;

    //return (dialog.ShowDialog() == DialogResult.OK ? dialog.FileNames : null);}