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I have defined few shortCode in Database. When i am displaying in view, ShortCode not replacing with the PartalView defined in the Dictionary.

In Database i am creating a field Description. There i am storing HTML text along with Few Short code. When i display Description in view. I want the short Code to replace with Partial view. Like we do in WordPress/Joomla. In Database i define ShortCode. I want that sortCode replaced with PartialView.

This is the message i am getting on the screen microsoft.AspNetCore.Mvc.ViewFeatures.Buffers.ViewBuffer


What I have tried:

@{
	var input = "<div>Hello This is Same</div><div>{partv _AllPages}</div><div>Some Content</div><div>{partv _AllPost}</div>";
	var replacements = new Dictionary<string, string>
	{ 
		{ "{partv _AllPages}", Html.Partial("_AllPages").ToString()},
		{ "{partv _AllPost}", Html.Partial("_AllPost").ToString()}
	};
	var output = replacements.Aggregate(input, (current, replacement) => current.Replace(replacement.Key, replacement.Value));
}
@Html.Raw(HttpUtility.HtmlDecode(output))
Posted
Updated 9-Aug-22 7:13am

1 solution

The Html.Partial method returns a ViewBuffer instance. That class does not override ToString, so the result of that method will be the full class name.

If you want to render the content to a string, you need to use the WriteTo method[^].
C#
var replacements = new Dictionary<string, IHtmlContent>
{
    ["{partv _AllPages}"] = Html.Partial("_AllPages"),
    ["{partv _AllPosts}"] = Html.Partial("_AllPosts"),
};

string output = input;
foreach (var pair in replacements)
{
    if (!output.Contains(pair.Key)) continue;
    
    string replacement;
    using (var writer = new StringWriter())
    {
        pair.Value.WriteTo(writer, HtmlEncoder.Default);
        replacement = writer.ToString();
    }
    
    output = output.Replace(pair.Key, replacement);
}

NB: Calling HttpUtility.HtmlDecode on the output is almost certainly the wrong thing to do.

I suspect you might be better served using something like this:
Back to Basics: Rendering Razor Views to String in ASP.NET Core - Rick Strahl's Web Log[^]
 
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Comments
Member 12953926 10-Aug-22 2:59am     CRLF
hi thanks for the solution. I have tried it. It gives error. Use of unassigned local variable 'replacement'. Please help Here what i tried: @{ var input = "Hello This is Same{partv _AllPages}Some Content{partv _AllPost}"; var replacements = new Dictionary<string,ihtmlcontent> { ["{partv _AllPages}"] = Html.Partial("_AllPages"), ["{partv _AllPosts}"] = Html.Partial("_AllPosts"), }; string output = input; foreach (var pair in replacements) { if (!output.Contains(pair.Key)) continue; string replacement; using (var writer = new StringWriter()) { pair.Value.WriteTo(writer, HtmlEncoder.Default); } output = output.Replace(pair.Key, replacement); } } @Html.Raw(HttpUtility.HtmlDecode(output))
Richard Deeming 10-Aug-22 7:21am    
Sorry, I missed the replacement = writer.ToString(); line - I've updated my answer.
Member 12953926 10-Aug-22 12:36pm    
Thanks a Lot. It worked.
Member 12953926 2-Sep-22 7:01am    
hi Richard, The above scrip work perfects. Can we cut-shot the script? Because there will be around 200+ partial view in my project. Is there any better way to do?

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