How to append string to a JSON string derived from a blob using .NET?

Question

I am trying to append a string to the JSON content extracted from a blob. The JSON content is similar to below.

    {
      "Subject": "Details",
      "FromAddress": "[email protected]",
      "ToAddress": "[email protected]",
      "Body": "My name is {name} and I faced this {exception} error"
    }

In this, I have to append a name (e.g. Arvind) and an exception (e.g. SystemException) and send the formatted data to another method to send mail

string data = EmailBlob.DownloadTextAsync().Result;
EmailData emailData = JsonConvert.DeserializeObject<EmailData>(data);

The variable data holds the following JSON

{
  "Subject": "Details",
  "FromAddress": "[email protected]",
  "ToAddress": "[email protected]",
  "Body": "My name is {name} and I faced this {exception} error"
}

The variable emailData holds the below.

  Subject: "Details",
  FromAddress: "[email protected]",
  ToAddress: "[email protected]",
  Body: "My name is {name} and I faced this {exception} error"

Now I have to update the name 'Arvind' and exception 'SystemException' and send the emaildata variable to another method as below.

  Subject: "Details",
  FromAddress: "[email protected]",
  ToAddress: "[email protected]",
  Body: "My name is Arvind and I faced this SystemException error"

How could I achieve it using C#.NET?

why not just use Replace method like Body.Replace("{name}","Arvind") — Noob Coder
– Noob Coder, Commented Mar 5, 2020 at 10:10
Possibly a duplicate of this stackoverflow.com/questions/43288857/… — Steve
– Steve, Commented Mar 5, 2020 at 10:18
string data = EmailBlob.DownloadTextAsync().Result; should be awaiting this — LinkedListT
– LinkedListT, Commented Mar 6, 2020 at 18:49

Zeeshan · Accepted Answer · 2020-03-05 10:32:35Z

3

             EmailData.Body = EmailData.Body
                             .Replace("{name}", "Arvind")
                             .Replace("{exception}", "SystemException ");

answered Mar 5, 2020 at 10:32

Zeeshan

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1 Comment

DavidG Over a year ago

Please explain code rather than just dumping code here.

sakthi smith · Accepted Answer · 2020-03-05 10:53:28Z

you can simply do it by String.Replace("old string","new string"); for your reference : https://learn.microsoft.com/en-us/dotnet/api/system.string.replace?view=netframework-4.8

    static void ReplaceExample()
    {
        //Method 1 - you can replace the value by data itself and you can deserialize to object
        string beforeDeserialize = EmailBlob.DownloadTextAsync().Result;
        beforeDeserialize = beforeDeserialize.Replace("{name}", "Arvind").Replace("{exception}", "SystemException ");
        EmailData emailDataM1 = JsonConvert.DeserializeObject<EmailData>(beforeDeserialize);
        //Method 2 - you can replace the valueafter deserialize
        string afterDeserialize = EmailBlob.DownloadTextAsync().Result;
        EmailData emailDataM2 = JsonConvert.DeserializeObject<EmailData>(afterDeserialize);
        emailDataM2.Body = emailDataM2.Body.Replace("{name}", "Arvind").Replace("{exception}", "SystemException ");
    }

AliReza Boroujerdian · Accepted Answer · 2020-03-05 10:47:03Z

0

1.

string name = "testName", exception "testException"

emailData.Body = emailData.Body.Replace("{name}", name);
emailData.Body = emailData.Body.Replace("{exception}", exception);

======================================

2.

  using System.Text.RegularExpressions;

Create variable and replace

string name = "testName", exception "testException"

emailData.Body = Regex.Replace(emailData.Body, "{name}", name);
emailData.Body = Regex.Replace(emailData.Body, "{exception}", exception );

=> "My name is testName and I faced this testException error"

edited Mar 5, 2020 at 10:47

answered Mar 5, 2020 at 10:22

AliReza Boroujerdian

765 bronze badges

1 Comment

DavidG Over a year ago

Why are you using a RegEx replacement here? There are no regular expressions here.

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