Is Base64String

This is a function to check is the string base64 string or not.

public static bool IsBase64String(string s)
{
    if ((s.Length % 4) != 0)
    {
        return false;
    }
    try
    {
        MemoryStream stream = new MemoryStream(Convert.FromBase64String(s));
        return true;
    }
    catch
    {
        return false;
    }
}

 

keys: c#, base64, crypto,