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Sitecore SheerResponse.Download Error with XML

 3 years ago
source link: https://blog.coates.dk/2016/12/20/sitecore-sheerresponse-download-error-with-xml/
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Sitecore SheerResponse.Download Error with XML

I had  a solution where we need to generate an XML file and download it from the Sitecore client. But when using SheerResponse.Download to download an XML file, it would add 2 elements to the end of the XML document (see the image below). The issue was found in sitecore 8.1 rev. 151207 (Update-1).

extra-elements

Sitecore have registered this a bug and provided a solution where I had to modify the main layout for the Sitecore client and use several support DLL’s, I decided not to do this.

Solution

I therefore did what I consider to be a nasty hack, but better than the alternative of modifying the Sitecore client, so please do not judge me for this!

SheerUI has a Eval function, which allows you to execute JavaScript within the Sitecore client. So I added an A tag, with a link to the file and then called click on the link.

internal void DownloadFile([NotNull] FileInfo file)
{
Assert.ArgumentNotNull(file, "file");
var virtualPath = file.FullName;
var rootPath = HostingEnvironment.MapPath("/");
if (rootPath == null)
return;
virtualPath = virtualPath.Replace(rootPath, string.Empty);
virtualPath = $"/{virtualPath.Replace("\\", "/")}";
string js = $"var link=document.createElement('a');document.body.appendChild(link);link.href = '{virtualPath}';link.download='{file.Name}';link.click();";
SheerResponse.Eval(js);
}

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