数组是否需要清空，如果需要，什么条件下回清空

2018-03-23 10:21:15 687 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

防火墙学习5---虚拟系统和跟系统通过路由表互访虚拟系统与跟系统互访可分为虚拟系统访问根系统和跟系统访问虚拟系统。阅读详情

1.
// Read the bytes.
while (dataToRead > 0)
{
// Verify that the client is connected.
if (Response.IsClientConnected)
{
// Read the data in buffer.
length = iStream.Read(buffer, 0, 10000);
// Write the data to the current output stream.
Response.OutputStream.Write(buffer, 0, length);
// Flush the data to the HTML output.
Response.Flush();
buffer = new Byte[10000];
dataToRead = dataToRead - length;
}
else
{
// Prevent infinite loop if user disconnects
dataToRead = -1;
}
}

2.
byte[] buffer = new byte[204800];
while (dataToRead > 0)
{
if (HttpContext.Current.Response.IsClientConnected)
{
int length = stream.Read(buffer, 0, Convert.ToInt32(chunkSize));
HttpContext.Current.Response.OutputStream.Write(buffer, 0, length);
HttpContext.Current.Response.Flush();
HttpContext.Current.Response.Clear();
dataToRead -= length;
}
else
{
dataToRead = -1; //防止client失去连接
}
}

这是大文件下载的代码，2个人写的。一个人在stream.Read(buffer, 0, Convert.ToInt32(chunkSize));后写了buffer = new Byte[10000];数组被重新初始化了，一个没有写，在while循环里直接多次使用，到底该不该清空数组呢？请大神们指教！！！

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