Net core api, get parameter with special character - api

Question

I am trying to receive a parameter by URL, but if this parameter has a '+' I do not receive it, for example:
www.domain.com/api/controller/Demo?guid=123+456
[HttpPost("Demo")]
public IActionResult PostData([FromQuery]string guid, Model model)
{
Inside the function, the guid value is 123 456

Answer 1

if this parameter has a '+' I do not receive it, for example: www.domain.com/api/controller/Demo?guid=123+456. Inside the function, the guid value is 123 456
To achieve your requirement, you can try following approaches:
Approach 1: manually replace the + sign to %2B while client make request to your API action.
Approach 2: encode query string guid=123+456 by using URL Rewriting Middleware, like below.
In Startup.cs
public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
{
//...
using (StreamReader iisUrlRewriteStreamReader =
File.OpenText("IISUrlRewrite.xml"))
{
var options = new RewriteOptions()
.AddIISUrlRewrite(iisUrlRewriteStreamReader);
app.UseRewriter(options);
}
//...
}
In IISUrlRewrite.xml
<?xml version="1.0" encoding="utf-8" ?>
<rewrite>
<rules>
<rule name="TESTURL">
<match url="api/your_controller_name/Demo" />
<conditions>
<add input="{QUERY_STRING}" pattern="guid=([0-9]+\+[0-9]+)" />
</conditions>
<action type="Rewrite" url="api/your_controller_name/Demo?guid={UrlEncode:{C:1}}" appendQueryString="false" />
</rule>
</rules>
</rewrite>
Test Result