Where is HtmlEncode in Asp.NET 5

Question

I have a custom IHtmlHelper extension method that uses TagBuilder and returns an HtmlString. I can no longer pass tagBuiler.ToString() to the HtmlString constructor as that just returns the typename now.

I see I can use the tabBuiler.WriteTo(TextWriter, IHtmlEncoder) method but I don't know exactly how to get my hands on an object that implments IHtmlEncoder. I see encoders in both System.Text.Encodings.Web and Microsoft.Framework.WebEncoders. But the types in the two namespace don't seem to play well together.

Benoit · Accepted Answer · 2016-05-29 08:29:12Z

15

In ASP.NET Core RC2 you can find HtmlDecode in System.Net.WebUtility:

GitHub source of System.Net.WebUtility

In your project.json import dependency system.net.utilities

"dependencies": {
    "System.Text.Encodings.Web": "4.0.0-rc2-24027"
}

edited May 29, 2016 at 8:29

Benoit

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answered May 23, 2016 at 17:01

Miroslav Holec

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Pavel Krymets · Accepted Answer · 2015-11-25 19:15:46Z

11

HtmlEncoder in Microsoft.Extensions.WebEncoders.Core is just a wrapper around System.Text.Encodings.Web.HtmlEncoder to implement IHtmlEncoder interface (https://github.com/aspnet/HttpAbstractions/blob/release/src/Microsoft.Extensions.WebEncoders.Core/HtmlEncoder.cs).

You can take Microsoft.Extensions.WebEncoders.HtmlEncoder.Default and pass to WriteTo method.

From what I see in dev branch MVC moved to using System.Text.Encodings.Web.HtmlEncoder directly so you wan't need to use Microsoft.Extensions.WebEncoders.HtmlEncoder anymore in future.

edited Nov 25, 2015 at 19:15

answered Nov 25, 2015 at 19:07

Pavel Krymets

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3 Comments

Keith Hill Over a year ago

Thanks! I wish there were some consolidated view of the asp.net 5 source so you locate types easier. :-)

Benoit Over a year ago

you can add this dependencie for rc2 : "System.Text.Encodings.Web": "4.0.0-rc2-24027"

Mike Over a year ago

the link is now dead

Greg Ennis · Accepted Answer · 2016-03-12 16:15:48Z

5

As for RC1 update 1, here is how it is done:

using System.Text.Encodings.Web;

...

HtmlEncoder.Default.Encode("...");

edited Mar 12, 2016 at 16:15

answered Mar 12, 2016 at 1:14

Greg Ennis

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Long Field · Accepted Answer · 2016-11-24 03:53:23Z

4

Just use System.Net.WebUtility.HtmlEncode or decode as:

System.Net.WebUtility.HtmlEncode() System.Net.WebUtility.HtmlDecode()

answered Nov 24, 2016 at 3:53

Long Field

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