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plus character is getting lost while encoding and decoding HTML in a dot net Framework application edit button Edit

author
Murugan Andezuthu Dharmaratnam | calendar 15 December 2023 | 609

plus (+) character is getting lost while encoding and decoding HTML in a .NET Framework application. Character getting lost, is likely due to the way URL encoding and decoding is handled. In URL encoding, a plus sign (+) is typically interpreted as a space. This means when you encode your HTML and send it to the server, if there are any + characters, they will be turned into spaces upon decoding. Here's how you can address this:

Code With Problem

            $.ajax({
                type: "POST",
                url: "/Article/Save",
                data: { id: '@Model.Id', data: encodeURI(htmlData), metakeywords: encodeURI(metakeywordsdata), metadescription: encodeURI(metadescriptiondata), title: encodeURI(title), CategoryId: CategoryId },
                success: function (msg, status, jqXHR) {
                    location.reload();
                },
            });

Solution

Encode Plus Sign Properly: Modify your JavaScript function to replace + signs with a URL-encoded representation. You can use encodeURIComponent instead of encodeURI for this. encodeURIComponent is more suitable for encoding individual components of a query string. Fixed Code 

            $.ajax({
                type: "POST",
                url: "/Article/Save",
                data: { id: '@Model.Id', data: encodeURIComponent(htmlData), metakeywords: encodeURIComponent(metakeywordsdata), metadescription: encodeURIComponent(metadescriptiondata), title: encodeURIComponent(title), CategoryId: CategoryId },
                success: function (msg, status, jqXHR) {
                    location.reload();
                },
            });

C# Server Code

        [HttpPost]
        [Authorize]
        public ActionResult Save(Guid id, string title, String data, string metakeywords, string metadescription, Guid CategoryId)
        {
            data = Server.UrlDecode(data);