我想在C＃中保存HTML代码

Question

I am using 'save as html' to save file as html. My code is:

string fileName = "";
string htmlpfilepath;
string[] parts;
try
{
    htmlpfilepath = Server.MapPath(ClinicalDocFile);
    parts = ClinicalDocFile.Split('/');

    if (parts.Length > 0)
        fileName = parts[parts.Length - 1];

    HttpResponse response = HttpContext.Current.Response;
    response.Clear();
    response.AddHeader("Content-Type", "text/HTML");
    response.AddHeader("Content-Disposition",
        "attachment; filename=" + fileName + "; size=" + fileName.Length.ToString());
    response.Flush();
    response.WriteFile(htmlpfilepath);
    response.Flush();
    response.End();
}
catch (Exception ex)
{
    FW.Fission.WebSite.Code.Utilities.SiteUtilities.HandleException(ex);
}

I am getting the following error in response.End(); line.

Enable to evaluate expression because the code is optimized or a native frame is on top of the call stack.

Answer 1

If you use the Response.End a ThreadAbortException exception occurs. You can use a try-catch statement to catch this exception.

The Response.End method ends the page execution and shifts the execution to the Application_EndRequest event in the application's event pipeline. The line of code that follows Response.End is not executed.

Check Here

Also check this Article and this

-- Hope it helps .

Answer 2

To work around this problem, use one of the following methods:

For Response.End , call the HttpContext.Current.ApplicationInstance.CompleteRequest method instead of Response.End to bypass the code execution to the Application_EndRequest event.

For Response.Redirect , use an overload, Response.Redirect(String url, bool endResponse) that passes false for the endResponse parameter to suppress the internal call to Response.End.

For example:

Response.Redirect ("nextpage.aspx", false);

If you use this workaround, the code that follows Response.Redirect is executed. For Server.Transfer, use the Server.Execute method instead.

Got from this link http://support.microsoft.com/kb/312629/en-us

response.redirect also faces the same problem you should be adding false

but in case if you are downloading word document file response.end() should be used, if not the word document downloaded will be in corrupted format.