ashx处理程序仅从ascx页面调用一次

Question

In .ascx page i have image button as follows:

"<asp:Image ID="imgPhotos" runat="server" Width="102" Height="82"/>"

In its code behind, I have:

this.imgPhotos.ImageUrl = "~/lib/services/GetSpaceImage.ashx";

In GetSpaceImage.ashx, i am dynamically generating images. But the problem is, for the first time it works good. But, second time and so on it never generate the new images. Debugger hits hanlder only for the first time(when the application loads). I have tried using: "context.Response.Cache.SetCacheability(HttpCacheability.NoCache);"

at the beginning of the ProcessRequest. But this also did not help. Am i missing anything? Please advice

Answer 1

浏览器缓存了此请求，为每个ashx URL添加唯一的参数，如下所示：

this.imgPhotos.ImageUrl = "~/lib/services/GetSpaceImage.ashx?param=" + DateTime.Now.Ticks.ToString();