C# Get Data From MySQLDatabase With PHP

I just started C#. I want to exchange data from my remote server. I couldn’t find any code that would work for me. It would be great if you could help with code snippets. Some of my sample code is below.

My PHP Code;

<?php
include 'Connect.php';
$response = array();

if(isset($_POST['tag']) && $_POST['tag'] != '') {
    $tag = $_POST['tag'];
    
    if($tag == 'CheckUser') {
        
        $UserName = $_POST["UserName"];
        $Password = $_POST["Password"];
        
        try {
            $Check = "SELECT * FROM Users WHERE UserName=? AND Password=?";
            $query = $con->prepare($Check);
            $query->execute(array($UserName, $Password));
            $Dataa= $query->rowCount();
            if($Dataa> 0) {
                $response["success"] = 1;
                $response["message"] = "User Found";
            }
            else {
                $response["success"] = 0;
                $response["message"] = "User Not Found";
            }
        }
        catch(Exception $e) {
            $response["success"] = 0;
            $response["message"] = $e->getMessage();
        }
    }
}
else {
    $response["success"] = 0;
    $response["message"] = "You do not have transaction authorization";
}
echo json_encode($response);
?>

How can I get the results of “success” and “message” in C#? Could you please suggest a sample code snippet?