文件的读取

复制代码 代码如下:

FileStream fs = new FileStream(@"D:12.txt", FileMode.Open);

byte[] buffer = new byte[1024 * 1024];

fs.Read(buffer, 0, buffer.Length);

string content = Encoding.Default.GetString(buffer);

textBox1.Text = content;

fs.Dispose();

文件的保存

复制代码 代码如下:

SaveFileDialog sfd = new SaveFileDialog();

DialogResult rst = sfd.ShowDialog();

if(rst==System.Windows.Forms.DialogResult.OK)

{

FileStream fs = new FileStream(sfd.FileName,FileMode.Create);

string content = textBox1.Text;

byte[] buffer = ASCIIEncoding.UTF8.GetBytes(content);

fs.Write(buffer,0,buffer.Length);

fs.Dispose();

文件的复制

复制代码 代码如下:

FileStream streamread = new FileStream(@"D:123.wmv",FileMode.Open);

FileStream streamwrite = new FileStream(@"F:1212.wmv",FileMode.Create);

byte[]buffer=new byte[1024*1024*3];

int Length;

do

{

Length = streamread.Read(buffer,0, buffer.Length);

streamwrite.Write(buffer,0, Length);

}

while (Length == buffer.Length);

streamread.Dispose();

streamwrite.Dispose();

MessageBox.Show("Copy Success");