ist ein Char ein druckbares Zeichen?

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/// <summary>
/// Determines whether the character is printable
/// </summary>
/// <param name="candidate">The candidate.</param>
/// <returns>
/// 	<c>true</c> if [is printable character] [the specified candidate]; otherwise, <c>false</c>.
/// </returns>
private bool IsPrintableCharacter(char candidate)
{
    return !(candidate < 0x20 || candidate > 127);
}