[C#]文字换行

关键代码：

     #region 文字换行

        /// <summary>

        /// 文字换行

        /// <para>eg:StringHelper.WrapText("YanZhiwei", 3);==>"Yan\r\nZhi\r\nwei"</para>

        /// </summary>

        /// <param name="data">需要换行的文字</param>

        /// <param name="maxWidth">多少长度换行</param>

        /// <returns>换行好的文字</returns>

        public static string WrapText(this string data, int maxWidth)

        {

            int _stringCount = data.Length;

            if (maxWidth > 0 && _stringCount > maxWidth)

            {

                StringBuilder _builderString = new StringBuilder(data);

                int _breakCount = _builderString.Length / maxWidth;

                for (int i = 0; i < _breakCount; i++)

                {

                    int _insertPosition = i * maxWidth;

                    if (_insertPosition != 0)

                    {

                        int _offset = (i - 1) * 2;//(\r\n)

                        _builderString.Insert(_insertPosition + _offset, Environment.NewLine);

                    }



                }

                return _builderString.ToString();

            }

            else

            {

                return data;

            }

        }

        #endregion

测试：

        [TestMethod()]

        public void WrapTextTest()

        {

            string _actual = StringHelper.WrapText("YanZhiwei", 3);

            Assert.AreEqual<string>(@"Yan

Zhi

wei", _actual);

        }

结果：

希望有所帮助！