Sometimes we don't want users to open known types of files directly in IE, such as Word, and hope to download directly, at this time, the following code can be used to replace Response.Redirect response.conteTtype = "Application / OcT-stream"; response .Addic-dispositioner, "attachment; filename =" YourFileName); response.binaryWrite ((byte []) YourFileData.Rows [0] ["attachment"]); response.end (); Hello.chm > This is the name of Hello.chm when the client is downloaded.