zhywebcore/learun.core/learun.util/CommonHelper.cs

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Text;

namespace learun.util
{
	/// <summary>
	/// 版 本 EasyCode EC管理后台
	/// Copyright (c) 2019-present EC管理有限公司
	/// 创建人：tobin
	/// 日 期：2019.09.23
	/// 描 述：常用公共类
	/// </summary>
	public static class CommonHelper
	{
		#region Stopwatch计时器

		/// <summary>
		/// 计时器开始
		/// </summary>
		/// <returns></returns>
		public static Stopwatch TimerStart()
		{
			Stopwatch watch = new Stopwatch();
			watch.Reset();
			watch.Start();
			return watch;
		}

		/// <summary>
		/// 计时器结束
		/// </summary>
		/// <param name="watch">Stopwatch</param>
		/// <returns></returns>
		public static string TimerEnd(Stopwatch watch)
		{
			watch.Stop();
			double costtime = watch.ElapsedMilliseconds;
			return costtime.ToString();
		}

		#endregion Stopwatch计时器

		#region 删除数组中的重复项

		/// <summary>
		/// 删除数组中的重复项
		/// </summary>
		/// <param name="values">重复值</param>
		/// <returns></returns>
		public static string[] RemoveDup(string[] values)
		{
			List<string> list = new List<string>();
			for (int i = 0; i < values.Length; i++)//遍历数组成员
			{
				if (!list.Contains(values[i]))
				{
					list.Add(values[i]);
				};
			}
			return list.ToArray();
		}

		#endregion 删除数组中的重复项

		#region 自动生成日期编号

		/// <summary>
		/// 自动生成编号  201008251145409865
		/// </summary>
		/// <returns></returns>
		public static string CreateNo()
		{
			Random random = new Random();
			string strRandom = random.Next(1000, 10000).ToString(); //生成编号
			string code = DateTime.Now.ToString("yyyyMMddHHmmss") + strRandom;//形如
			return code;
		}

		#endregion 自动生成日期编号

		#region 生成0-9随机数

		/// <summary>
		/// 生成0-9随机数
		/// </summary>
		/// <param name="codeNum">生成长度</param>
		/// <returns></returns>
		public static string RndNum(int codeNum)
		{
			StringBuilder sb = new StringBuilder(codeNum);
			Random rand = new Random();
			for (int i = 1; i < codeNum + 1; i++)
			{
				int t = rand.Next(9);
				sb.AppendFormat("{0}", t);
			}
			return sb.ToString();
		}

		#endregion 生成0-9随机数

		#region 删除最后一个字符之后的字符

		/// <summary>
		/// 删除最后结尾的一个逗号
		/// </summary>
		/// <param name="str">字串</param>
		/// <returns></returns>
		public static string DelLastComma(string str)
		{
			return str.Substring(0, str.LastIndexOf(","));
		}

		/// <summary>
		/// 删除最后结尾的指定字符后的字符
		/// </summary>
		/// <param name="str">字串</param>
		/// <param name="strchar">指定的字符</param>
		/// <returns></returns>
		public static string DelLastChar(string str, string strchar)
		{
			return str.Substring(0, str.LastIndexOf(strchar));
		}

		/// <summary>
		/// 删除最后结尾的长度
		/// </summary>
		/// <param name="str">字串</param>
		/// <param name="Length">删除长度</param>
		/// <returns></returns>
		public static string DelLastLength(string str, int Length)
		{
			if (string.IsNullOrEmpty(str))
				return "";
			str = str.Substring(0, str.Length - Length);
			return str;
		}

		#endregion 删除最后一个字符之后的字符
	}
}