Begineer in Azure Function

Question

I am trying to call a function from Logic app and for that I have started creating a small function code in the portal itself with HTTP trigger, which looks something like the one below and it is basically going to convertbase64 a value in name tag. and the response what i get is

" 500 Internal Server error"

code:

#r "Newtonsoft.Json"

using System.Net;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Primitives;
using Newtonsoft.Json;

public static async Task<IActionResult> Run(HttpRequest req, ILogger log)
{
    log.LogInformation("C# HTTP trigger function processed a request.");

    string name = req.Query["name"];

    string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
    dynamic data = JsonConvert.DeserializeObject(requestBody);
    name = name ?? data?.name;
    var hash = Convert.FromBase64String( name );
    var sb = new StringBuilder();
    foreach( var b in hash )
    {
        sb.Append( b.ToString("X2") );
    }
    sb.ToString()

    string responseMessage = sb.ToString()? "This HTTP triggered function executed successfully. Pass a name in the query string or in the request body for a personalized response."
                : $"Hello, {hash}. This HTTP triggered function executed successfully.";

            return new OkObjectResult(responseMessage);
}

my input passed is

{
"name": "INDiTF0Nq8hU6d4fHqu1dQ"
}

how can I get the sb.Tostring() value in the output of the function so that i can call this in Logic app. My this bunch of code if ran separately in c# will give me the correct output, i am just trying to append it in function app and get the response in there

var hash = Convert.FromBase64String("INDiTF0Nq8hU6d4fHqu1dQ==");
    var sb = new StringBuilder();
    foreach( var b in hash )
    {
        sb.Append( b.ToString("X2") );
    }
    sb.ToString()

Answer 1

Hello @ankit kumar I tried your code. I am sharing my code :

#r "Newtonsoft.Json"  
  
using System.Net;  
using Microsoft.AspNetCore.Mvc;  
using Microsoft.Extensions.Primitives;  
using Newtonsoft.Json;  
using System.Text;  
  
public static async Task<IActionResult> Run(HttpRequest req, ILogger log)  
{  
    log.LogInformation("C# HTTP trigger function processed a request.");  
  
    string name = req.Query["name"];  
  
    string requestBody = await new StreamReader(req.Body).ReadToEndAsync();  
    dynamic data = JsonConvert.DeserializeObject(requestBody);  
    name = name ?? data?.name;  
  
    var hash = Convert.FromBase64String( name );  
     var sb = new StringBuilder();  
     foreach( var b in hash )  
     {  
         sb.Append( b.ToString("X2") );  
     }  
       
    string str = sb.ToString();  
  
    return str != null  
        ? (ActionResult)new OkObjectResult(str)  
        : new BadRequestObjectResult("Please pass a name on the query string or in the request body");  
}  

Couple of changes made. I have added using System.Text; for the StringBuilder and modified the return object.

Output :

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