C#文件加密方法汇总

            {
                MessageBox.Show("密码不能为空", "提示");
                return;
            }

            if (txtPwdCfm.Text == "")
            {
                MessageBox.Show("确认密码不能为空", "提示");
                return;
            }

            if (txtPwdCfm.Text != txtPwd.Text)
            {
                MessageBox.Show("两次输入的密码不相同", "提示");
                return;
            }
            #endregion

            if (openFileDialog1.ShowDialog() == DialogResult.OK)
            {
                Thread thread = new Thread(new ParameterizedThreadStart(delegate(object obj)
                {
                    try
                    {
                        InvokeDelegate invokeDelegate = delegate()
                        {
                            pbFile.Value = 0;
                            lblProgressFile.Text = "0%";