Question

asp.net 点击链接时如何像下载软件一样下载图片

asp.net 点击链接时如何像下载软件一样下载图片 十分感觉！

Answer 1

链接指向一个地址，该地址执行下列代码即可

Response.BufferOutput = false;

Response.Clear();
Response.AppendHeader("Content-Disposition", "attachment; filename=" + 文件名);
Response.ContentType = "application/octstream";
Response.CacheControl = "Private";
Stream stm=new FileStream(文件路径,FileMode.Open ,FileAccess.Read,FileShare.Read);
Response.AppendHeader( "Content-length",stm.Length.ToString() );

BinaryReader br = new BinaryReader(stm);

byte[] bytes;

for (Int64 x=0;x < ( br.BaseStream.Length / 4096 + 1 ); x++ )
{
bytes = br.ReadBytes(4096);
Response.BinaryWrite(bytes);
System.Threading.Thread.Sleep( 5 ); //休息一下,防止耗用带宽太多。
}

stm.Close();

Answer 2

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