C# Online Compiler | .NET Fiddle

using System;
using System.Text;
					
public class Program
{
	public static void Main()
	{
		var plainValue = "something to encode";
		Console.WriteLine($"Unencoded value: {plainValue}\r\n");
		
		var encodedValue = Convert.ToBase64String(Encoding.ASCII.GetBytes(plainValue));
		Console.WriteLine($"Encoded value: {encodedValue}\r\n");

		var originalValue = Encoding.UTF8.GetString(Convert.FromBase64String(encodedValue));
		Console.WriteLine($"Original unencoded value: {originalValue}");
	}
}

 
using System;
using System.Text;
                    
public class Program
{
    public static void Main()
    {
        var plainValue = "something to encode";
        Console.WriteLine($"Unencoded value: {plainValue}\r\n");
        
        var encodedValue = Convert.ToBase64String(Encoding.ASCII.GetBytes(plainValue));
        Console.WriteLine($"Encoded value: {encodedValue}\r\n");
​
        var originalValue = Encoding.UTF8.GetString(Convert.FromBase64String(encodedValue));
        Console.WriteLine($"Original unencoded value: {originalValue}");
    }
}

Cached Result

Before BulkUpdate

CustomerID	Name	Description	ModifiedDate	CreatedDate	IsActive
1	Carson	Description of Carson	4/4/2025 9:37:38 AM	4/4/2025 9:37:38 AM	True
2	Meredith	Description of Meredith	4/5/2025 9:37:42 AM	4/5/2025 9:37:42 AM	True
3	Arturo	Description of Arturo	4/5/2025 9:37:42 AM	4/6/2025 9:37:42 AM	True

After BulkUpdate

CustomerID	Name	Description	ModifiedDate	CreatedDate	IsActive
1	Carson_Updated	Description of Carson_Updated	4/7/2025 9:37:42 AM	4/4/2025 9:37:38 AM	False
2	Meredith_Updated	Description of Meredith_Updated	4/7/2025 9:37:42 AM	4/5/2025 9:37:42 AM	False
3	Arturo	Description of Arturo	4/5/2025 9:37:42 AM	4/6/2025 9:37:42 AM	True