235 lines
8.1 KiB
C#
235 lines
8.1 KiB
C#
using System;
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using System.Data;
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using System.Linq;
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using System.Reflection;
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using System.Web;
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namespace GSYWApi
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{
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/// <summary>
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/// 通用方法帮助类
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/// </summary>
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public class CommonHelper
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{
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#region 方法 -> 将DateTime类型转换为long类型
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/// <summary>
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/// 将DateTime类型转换为long类型
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/// </summary>
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/// <param name="dt">时间</param>
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/// <returns></returns>
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public static long ConvertDataTimeLong(DateTime dt)
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{
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DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
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TimeSpan toNow = dt.Subtract(dtStart);
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long timeStamp = toNow.Ticks;
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timeStamp = long.Parse(timeStamp.ToString().Substring(0, timeStamp.ToString().Length - 7));
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return timeStamp;
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}
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#endregion
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#region 方法 -> 将Long类型转换为DateTime类型
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/// <summary>
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/// 将Long类型转换为DateTime类型
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/// </summary>
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/// <param name="d">long</param>
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/// <returns></returns>s
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public static DateTime ConvertLongDateTime(long d)
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{
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DateTime dtStart = TimeZone.CurrentTimeZone.ToLocalTime(new DateTime(1970, 1, 1));
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long lTime = long.Parse(d + "0000000");
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TimeSpan toNow = new TimeSpan(lTime);
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DateTime dtResult = dtStart.Add(toNow);
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return dtResult;
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}
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/// <summary>
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/// 时间戳(毫秒值)String转换为DateTime类型转换
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/// </summary>
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/// <param name="time">毫秒时间戳</param>
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/// <returns></returns>
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public static DateTime TicksToDate(string time)
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{
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return new DateTime((Convert.ToInt64(time) * 10000) + 621355968000000000);
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}
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#endregion
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#region 方法 -> 枚举参数过滤处理
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/// <summary>
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/// 枚举参数过滤处理，解决麻烦的SQL拼接
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/// （对照数据表给定添加、更新的参数枚举类型ValueType）
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/// </summary>
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/// <param name="_Type">数据类型</param>
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/// <param name="_String">数据值</param>
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/// <returns></returns>
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public static string IsArrayType(ValueType _Type, object _String = null)
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{
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if (_String != null && _String.ToString() != "")
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{
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switch (_Type)
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{
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case ValueType.String:
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return string.Format("'{0}'", _String.ToString().Replace("'", " "));
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case ValueType.Int:
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case ValueType.Double:
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case ValueType.Boolean:
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return _String.ToString();
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case ValueType.DateTime:
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return string.Format("TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", _String);
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}
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}
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return "null";
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}
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/// <summary>
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/// 枚举参数过滤处理，解决麻烦的SQL拼接
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/// （对照数据表给定添加、更新的参数枚举类型ValueType）
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/// </summary>
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/// <param name="_Type">数据类型</param>
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/// <param name="_DefaultValue">是否使用缺省值</param>
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/// <returns></returns>
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private static string IsArrayType(ValueType _Type, bool _DefaultValue = false)
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{
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if (_DefaultValue)
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{
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switch (_Type)
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{
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case ValueType.String:
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return "''";
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case ValueType.Int:
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case ValueType.Double:
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case ValueType.Boolean:
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return "0";
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case ValueType.DateTime:
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return string.Format("TO_DATE('{0}','YYYY/MM/DD HH24:MI:SS')", DateTime.Now.ToString());
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}
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}
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return "null";
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}
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#endregion
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#region 方法 -> 定义5个类型的枚举
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/// <summary>
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/// 定义5个类型的枚举
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/// </summary>
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public enum ValueType
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{
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/// <summary>
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/// 字符串
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/// </summary>
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String = 0,
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/// <summary>
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/// 整型
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/// </summary>
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Int = 1,
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/// <summary>
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/// 双精度
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/// </summary>
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Double = 2,
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/// <summary>
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/// true或false
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/// </summary>
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Boolean = 3,
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/// <summary>
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/// 日期
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/// </summary>
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DateTime = 4
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}
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#endregion
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#region 方法 -> SQL语句分页
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/// <summary>
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/// SQL语句分页
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/// </summary>
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/// <param name="sql">SQL语句</param>
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/// <param name="rn">开始的行号</param>
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/// <param name="rowNum">结束的行号</param>
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/// <returns></returns>
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public static string GetPageSql(string sql, int? rn = null, int? rowNum = null)
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{
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if (rn != null && rowNum != null)
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{
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//分页查询
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sql = string.Format(@"
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SELECT * FROM (
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SELECT ROWNUM RN,N.* FROM ({0}) N WHERE ROWNUM<={1}
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) M WHERE M.RN>={2}", sql, rowNum, rn);
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}
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return sql;
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}
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#endregion
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#region 方法 -> 为属性赋值
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/// <summary>
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/// 为属性赋值
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/// </summary>
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/// <typeparam name="T">源单类</typeparam>
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/// <typeparam name="S">需要转换的实体类</typeparam>
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/// <param name="source"></param>
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/// <returns></returns>
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public static S EntityConvert<T, S>(T source)
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{
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S target = Activator.CreateInstance<S>();
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var sType = source.GetType();
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var dType = typeof(S);
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foreach (PropertyInfo now in sType.GetProperties())
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{
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var name = dType.GetProperty(now.Name);
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if (name == null)
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continue;
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dType.GetProperty(now.Name).SetValue(target, now.GetValue(source));
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}
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return target;
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}
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#endregion
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#region 方法 -> 获取指定页码Datatable数据
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/// <summary>
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/// 获取指定页码Datatable数据
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/// </summary>
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/// <param name="dtOrigin">源数据</param>
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/// <param name="pageSize">返回第几页数据</param>
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/// <param name="pageIndex">每页返回的数量</param>
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/// <returns>Datatable数据格式</returns>
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public static DataTable GetDataTableWithPageSize(DataTable dtOrigin, int pageSize, int pageIndex)
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{
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if (pageSize == 0)
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{
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pageSize = 10;
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}
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if (pageIndex == 0)
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{
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pageIndex = 1;
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}
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//克隆数据源
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DataTable dtClone = dtOrigin.Clone();
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dtClone.Columns.Add("RN", typeof(int));
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//开始插入数据源
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for (int RowCount = 0; RowCount < pageSize; RowCount++)
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{
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//获取当前数据源行数
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int RN = pageSize * (pageIndex - 1) + RowCount;
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//如果行数大于数据源实际数量，则直接跳过
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if (RN >= dtOrigin.Rows.Count)
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{
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break;
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}
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//获取当前数据源内容
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DataRow EndAccountDataRow = dtOrigin.Rows[RN];
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//创建一个新 System.Data.DataRow 具有与表相同的架构
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DataRow _DataRow = dtClone.NewRow();
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//开始插入数据
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for (int ColumnsCount = 0; ColumnsCount < dtOrigin.Columns.Count; ColumnsCount++)
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{
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_DataRow[ColumnsCount] = EndAccountDataRow[ColumnsCount];
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}
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_DataRow["RN"] = RN + 1;
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//将数据加入到克隆的DataTable中
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dtClone.Rows.Add(_DataRow);
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}
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return dtClone;
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}
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#endregion
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}
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} |