Separate base64 from String

Question

Hi,

I have my TinyMCE field,from that iam getting the below "String" value.From that I need to take only encoded base64 part.How can i do it?

Example

var String="<p><img src="data:image/png;base64,iVBORw0KGgoAAAANSUh=" /></p>

<p><img src="data:image/png;base64,/9j/4AAQSkZJRgABAQAAAQABAA=" /><br /><br />---------- Reply message ----------<br />From: [e-mail]<br />Date: 04/01/2018 02:50:19 PM<br />Subject: Ticket No: gh<br />To: [e-mail]<br />";

output will be

iVBORw0KGgoAAAANSUh=

/9j/4AAQSkZJRgABAQAAAQABAA=

Answer 1

my task is to upload file with updated version 6th step of following url

 

https://developer.autodesk.com/en/docs/data/v2/tutorials/upload-file/ 

Answer 2

var url = "API URL";
var jsonData = "[{...json data...}]";

using (var client = new WebClient())
{
    client.Headers.Add("content-type", "application/json");
    var response = client.UploadString(url, jsonData);
}

 Try this

Answer 3

I have to integrate this 

https://developer.autodesk.com/en/docs/data/v2/reference/http/projects-project_id-versions-POST/ 

Answer 4

What should i pass in query string or in request.AddHeader

Answer 5

Please have a look at below thread it might be helpful to you:

 

https://stackoverflow.com/questions/7929013/making-a-curl-call-in-c-sharp