System.Text.StringBuilder.StringBuilder C# (CSharp) Метод

		private StringBuilder(string value, int startIndex, int length, int capacity, int maxCapacity)
		{
			// first, check the parameters and throw appropriate exceptions if needed
			if (null == value)
				value = "";

			// make sure startIndex is zero or positive
			if (startIndex < 0)
				throw new System.ArgumentOutOfRangeException ("startIndex", startIndex, "StartIndex cannot be less than zero.");

			// make sure length is zero or positive
			if(length < 0)
				throw new System.ArgumentOutOfRangeException ("length", length, "Length cannot be less than zero.");

			if (capacity < 0)
				throw new System.ArgumentOutOfRangeException ("capacity", capacity, "capacity must be greater than zero.");

			if (maxCapacity < 1)
				throw new System.ArgumentOutOfRangeException ("maxCapacity", "maxCapacity is less than one.");
			if (capacity > maxCapacity)
				throw new System.ArgumentOutOfRangeException ("capacity", "Capacity exceeds maximum capacity.");

			// make sure startIndex and length give a valid substring of value
			// re-ordered to avoid possible integer overflow
			if (startIndex > value.Length - length)
				throw new System.ArgumentOutOfRangeException ("startIndex", startIndex, "StartIndex and length must refer to a location within the string.");

			if (capacity == 0) {
				if (maxCapacity > constDefaultCapacity)
					capacity = constDefaultCapacity;
				else
					_str = _cached_str = String.Empty;
			}
			_maxCapacity = maxCapacity;

			if (_str == null)
				_str = String.InternalAllocateStr ((length > capacity) ? length : capacity);
			if (length > 0)
				String.CharCopy (_str, 0, value, startIndex, length);
			
			_length = length;
		}