mirror of
https://github.com/KevinWG/OSS.Common.git
synced 2026-10-24 10:20:00 +08:00
338 lines
11 KiB
C#
338 lines
11 KiB
C#
using System;
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namespace OS.Common.Extention
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{
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public static class ConvertExtention
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{
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#region DataReader转化部分
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///// <summary>
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///// 获取布尔类型
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>A boolean value</returns>
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//public static bool GetBoolean(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return false;
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// }
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// return Convert.ToBoolean(rdr[index]);
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//}
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///// <summary>
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///// 获取字节流类型
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>A byte array</returns>
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//public static byte[] GetBytes(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return null;
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// }
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// return (byte[])rdr[index];
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//}
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///// <summary>
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///// 获取时间格式对象，如果不存在返回最小时间
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>A date time</returns>
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//public static DateTime GetDateTime(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return DateTime.MinValue;
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// }
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// return Convert.ToDateTime(rdr[index]);
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//}
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///// <summary>
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///// 获取UTC时间，如果不存在则返回最小时间
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>A date time</returns>
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//public static DateTime GetUtcDateTime(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return DateTime.MinValue;
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// }
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// return DateTime.SpecifyKind((DateTime)rdr[index], DateTimeKind.Utc);
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//}
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///// <summary>
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///// 获取时间格式对象（可空）
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>A date time if exists; otherwise, null</returns>
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//public static DateTime? GetNullableDateTime(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return default(DateTime?);
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// }
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// return Convert.ToDateTime(rdr[index]);
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//}
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///// <summary>
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///// 获取UTC时间，可空
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>A date time if exists; otherwise, null</returns>
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//public static DateTime? GetNullableUtcDateTime(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return default(DateTime?);
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// }
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// return DateTime.SpecifyKind((DateTime)rdr[index], DateTimeKind.Utc);
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//}
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///// <summary>
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///// 返回十进制类型
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>A decimal value</returns>
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//public static decimal GetDecimal(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return decimal.Zero;
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// }
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// return Convert.ToDecimal(rdr[index]);
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//}
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///// <summary>
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///// 返回双精度类型
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>A double value</returns>
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//public static double GetDouble(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return 0.0;
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// }
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// return Convert.ToDouble(rdr[index]);
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//}
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///// <summary>
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///// 获取GUID对象
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>A GUID value</returns>
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//public static Guid GetGuid(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return Guid.Empty;
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// }
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// return (Guid)rdr[index];
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//}
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///// <summary>
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///// 获取int对象
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>An integer value</returns>
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//public static int GetInt32(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return 0;
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// }
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// return rdr[index].ToInt32( );
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//}
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///// <summary>
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///// 得到可以为null的int型数据 ?号表示可以为空值类型，这是C#的特性，表示Nullable类型结构
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>A nullable integer value</returns>
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//public static int? GetNullableInt(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return default(int?);
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// }
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// return rdr[index].ToInt32( );
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//}
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///// <summary>
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///// 获取string类型对象
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///// </summary>
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///// <param name="rdr">Data reader</param>
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///// <param name="columnName">Column name</param>
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///// <returns>A string value</returns>
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//public static string GetString(this IDataReader rdr, string columnName)
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//{
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// int index = rdr.GetOrdinal(columnName);
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// if (rdr.IsDBNull(index))
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// {
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// return null;
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// }
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// return Convert.ToString(rdr[index]);
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//}
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#endregion
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#region 字符串数字转化部分
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/// <summary>
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/// 字符串转化成数字
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/// </summary>
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/// <param name="obj">要转化的值</param>
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/// <param name="defaultValue">如果转化失败，返回的默认值</param>
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/// <returns></returns>
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public static int ToInt32( this string obj ,int defaultValue=0)
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{
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try
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{
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int returnValue = 0;
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if (int.TryParse(obj, out returnValue))
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{
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return returnValue;
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}
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}
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catch (Exception)
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{
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}
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return defaultValue;
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}
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/// <summary>
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/// 字符串转化成数字
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/// </summary>
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/// <param name="obj">要转化的值</param>
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/// <param name="defaultValue">如果转化失败，返回的默认值</param>
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/// <returns></returns>
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public static int ToInt32(this object obj, int defaultValue=0)
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{
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if (obj==null)
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{
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return defaultValue;
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}
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return obj.ToString().ToInt32( );
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}
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/// <summary>
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/// 字符串转化成数字
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/// </summary>
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/// <param name="obj">要转化的值</param>
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/// <param name="defaultValue">如果转化失败，返回的默认值</param>
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/// <returns></returns>
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public static long ToInt64(this string obj, int defaultValue=0)
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{
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try
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{
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long returnValue = 0;
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if (long.TryParse(obj, out returnValue))
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{
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return returnValue;
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}
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}
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catch (Exception)
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{
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}
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return defaultValue;
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}
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/// <summary>
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/// 字符串转化成数字
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/// </summary>
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/// <param name="obj">要转化的值</param>
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/// <param name="defaultValue">如果转化失败，返回的默认值</param>
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/// <returns></returns>
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public static decimal ToDecimal(this string obj, decimal defaultValue=0)
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{
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try
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{
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decimal returnValue = 0;
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if (decimal.TryParse(obj, out returnValue))
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{
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return returnValue;
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}
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}
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catch (Exception)
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{
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}
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return defaultValue;
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}
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/// <summary>
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/// 字符串转化成数字
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/// </summary>
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/// <param name="obj">要转化的值</param>
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/// <param name="defaultValue">如果转化失败，返回的默认值</param>
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/// <returns></returns>
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public static decimal ToDecimal(this object obj, decimal defaultValue=0)
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{
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if (obj==null)
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{
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return defaultValue;
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}
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return obj.ToString().ToInt32();
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}
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/// <summary>
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/// 字符串转化成时间
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/// </summary>
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/// <param name="obj">要转化的值</param>
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/// <returns></returns>
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public static DateTime? ToNullableDateTime(this string obj)
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{
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if (string.IsNullOrEmpty(obj))
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{
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return null;
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}
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DateTime date;
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return DateTime.TryParse(obj, out date) ? date : default(DateTime?);
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}
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/// <summary>
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/// 转化成布尔类型
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/// </summary>
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/// <returns></returns>
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public static bool ToBoolean(this string str)
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{
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bool isOkay = false;
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Boolean.TryParse(str, out isOkay);
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return isOkay;
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}
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#endregion
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}
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}
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