C# 读取txt文件

//按钮点击选择文件
private void btnFile_Click(object sender, EventArgs e)
        {
            OpenFileDialog fileDialog = new OpenFileDialog();
            fileDialog.Multiselect = true;
            fileDialog.Title = "请选择文件";
            fileDialog.Filter = "所有文件(*.*)|*.*";
            if (fileDialog.ShowDialog() == DialogResult.OK)
            {
                string file = fileDialog.FileName;
                //读取txt文件每行的内容以数组形式保存
                string[] strs2 = File.ReadAllLines(@file, Encoding.Default);
                
            }

        }