文件传送中非常奇怪的问题

Question

我的代码：
if(!destFile.Open(filepath, CFile::modeCreate |             CFile::modeWrite | CFile::typeBinary))
{
 
return FALSE;
}         count=接受的字节数，
        
while(dwRead<count)
{
memset(data,0,1024);
//判断应该接收多少字节
if((count-dwRead)<1024)
dw=Receive(data,count-dwRead);
else
dw=Receive(data,1024);        destFile.Write(data,dw);
 
dwRead+=dw;
}我调试的时候给的错误的提示：ASSERT(AfxIsValidAddress(lpBuf, nCount, FALSE));请告诉手指点一下，谢谢！

Answer 1

if(dw>0)
{
destFile.Write(data,dw);
 
dwRead+=dw;
}

Answer 2

data 数据区是否正确申请?

Answer 3

if((count-dwRead)<1024)
dw=Receive(data,count-dwRead);
else
dw=Receive(data,1024);        destFile.Write(data,dw);你接受到的字节数 是 dw, 不是 data;
data是用来接受的缓冲。