/// <summary>
/// Gets a <see cref="string"/> of only the characters that are valid for the specified <see cref="CharType"/>.
/// </summary>
/// <param name="validChars">The valid chars.</param>
/// <param name="inStr">The string to remove the characters from that are not valid for the <paramref name="validChars"/>.</param>
/// <returns>The <paramref name="inStr"/> minus all characters that were not valid for the <paramref name="validChars"/>.</returns>
public static string GetValidCharsOnly(this CharType validChars, string inStr)
{
if (string.IsNullOrEmpty(inStr))
{
return(inStr);
}
var output = inStr;
for (var i = 0; i < output.Length; i++)
{
var c = inStr[i];
if (!validChars.IsValidChar(c))
{
output = output.Remove(i, 1);
i--;
}
}
return(output);
}