C#中filestream类的属性、方法介绍

privatevoid btnReadChoose_Click(object sender, EventArgs e)
        {
//创建 打开文件 对话框，可以直接拖控件哈。。
            OpenFileDialog ofd=new OpenFileDialog();
//将文件路径显示在文本框
if (ofd.ShowDialog() == DialogResult.OK)
            {
                txtReadPath.Text = ofd.FileName;
            }
        }

#region 显示温馨提示的消息+void MsgShow(string Msg)
///

privatevoid btnReadFile_Click(object sender, EventArgs e)
        {
//创建文件流、流操作要进行异常处理，并以using来释放对象
try
            {
using (FileStream fs =new FileStream(txtReadPath.Text, FileMode.Open))
                {
//定义缓存区,3M 大小
byte[] arrFileData =newbyte[1024*1024*3];
//读文件 存在 arrFileData 中
                    fs.Read(arrFileData, 0, arrFileData.Length);
//转 编码格式 以便显示在 文本框 txtReadMsg 中
string ChangeToString = Encoding.Default.GetString(arrFileData);
                    txtReadMsg.Text = ChangeToString;
                    MsgShow("文本读取成功!!!");
                }
            }
catch (Exception ex)
            {
                MessageBox.Show("异常:"+ ex.Message);
            }

        }

privatevoid btnWriteFile_Click(object sender, EventArgs e)
        {
//获取要写入文本的数据
string strWriteData = txtWriteMsg.Text;
try
            {
using (FileStream fs =new FileStream(txtWritePath.Text, FileMode.Create))
                {
//转为二进制写入文本
byte[] arrWriteData = Encoding.Default.GetBytes(strWriteData);

//fs.Write(数据缓存区，从第几个byte开始写，写多少个)
                    fs.Write(arrWriteData, 0, arrWriteData.Length);
                    MsgShow("写入文本成功!!!");
                }
            }
catch (Exception ex)
            {

                MessageBox.Show("异常:"+ ex.Message);
            }