ASP.NET中Image控件使用详解(2)

byte [] b=....;//从数据库中读取
 
if (b == null || b.Length == 0)
{
    //当没有图片数据时显示默认的图片nophoto.gif
    FileStream fs = new FileStream(Server.MapPath("~/Management/Images/nophoto.gif"), FileMode.Open, FileAccess.Read);
    byte[] mydata = new byte[fs.Length];
    int Length = Convert.ToInt32(fs.Length);
    fs.Read(mydata, 0, Length);
    fs.Close();
    this.Response.OutputStream.Write(mydata, 0, Length);
    this.Response.End();
}
else
{
    Response.ContentType = ...;//从数据库中读取图片的后缀名
    Response.OutputStream.Write(b, 0, b.Length);
}

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