忽略
This commit is contained in:
“wanyongkang”
@@ -1,196 +1,196 @@
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using System;
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using System.Collections.Generic;
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using System.Data.Common;
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using System.Reflection;
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using Microsoft.EntityFrameworkCore;
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namespace Hncore.Infrastructure.EF
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{
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public static class Sql
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{
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/// <summary>
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/// 执行Reader
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/// </summary>
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/// <param name="dbContext"></param>
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/// <param name="sql"></param>
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/// <param name="action"></param>
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public static void Reader(this DbContext dbContext, string sql, Action<DbDataReader> action)
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{
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var conn = dbContext.Database.GetDbConnection();
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try
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{
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conn.Open();
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using (var command = conn.CreateCommand())
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{
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string query = sql;
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command.CommandText = query;
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using (DbDataReader reader = command.ExecuteReader())
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{
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if (reader.HasRows)
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{
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while (reader.Read())
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{
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action(reader);
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}
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}
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}
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}
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}
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finally
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{
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conn.Close();
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}
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}
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/// <summary>
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/// 执行Query
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="dbContext"></param>
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/// <param name="sql"></param>
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/// <returns></returns>
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public static List<T> SqlQuery<T>(this DbContext dbContext, string sql)
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{
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List<T> list = new List<T>();
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var conn = dbContext.Database.GetDbConnection();
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try
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{
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conn.Open();
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using (var command = conn.CreateCommand())
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{
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string query = sql;
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command.CommandText = query;
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using (DbDataReader reader = command.ExecuteReader())
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{
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if (reader.HasRows)
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{
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list = reader.ReaderToList<T>();
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}
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}
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}
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}
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finally
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{
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conn.Close();
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}
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return list;
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}
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/// <summary>
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/// 执行Sql命令
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/// </summary>
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/// <param name="dbContext"></param>
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/// <param name="sql"></param>
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/// <returns></returns>
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public static int ExecuteSql(this DbContext dbContext, string sql)
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{
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var conn = dbContext.Database.GetDbConnection();
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int rowAffected = 0;
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try
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{
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conn.Open();
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using (var command = conn.CreateCommand())
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{
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command.CommandText = sql;
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rowAffected = command.ExecuteNonQuery();
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}
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}
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finally
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{
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conn.Close();
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}
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return rowAffected;
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}
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/// <summary>
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/// DataReader转泛型
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/// </summary>
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/// <typeparam name="T">传入的实体类</typeparam>
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/// <param name="objReader">DataReader对象</param>
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/// <returns></returns>
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public static List<T> ReaderToList<T>(this DbDataReader objReader)
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{
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using (objReader)
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{
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List<T> list = new List<T>();
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//获取传入的数据类型
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Type modelType = typeof(T);
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//遍历DataReader对象
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while (objReader.Read())
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{
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//使用与指定参数匹配最高的构造函数，来创建指定类型的实例
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T model = Activator.CreateInstance<T>();
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for (int i = 0; i < objReader.FieldCount; i++)
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{
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//判断字段值是否为空或不存在的值
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if (!IsNullOrDBNull(objReader[i]))
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{
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//匹配字段名
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PropertyInfo pi = modelType.GetProperty(objReader.GetName(i),
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BindingFlags.GetProperty | BindingFlags.Public | BindingFlags.Instance |
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BindingFlags.IgnoreCase);
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if (pi != null)
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{
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//绑定实体对象中同名的字段
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pi.SetValue(model, CheckType(objReader[i], pi.PropertyType), null);
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}
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}
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}
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list.Add(model);
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}
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return list;
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}
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}
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/// <summary>
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/// 判断指定对象是否是有效值
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/// </summary>
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/// <param name="obj"></param>
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/// <returns></returns>
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private static bool IsNullOrDBNull(object obj)
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{
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return (obj == null || (obj is DBNull)) ? true : false;
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}
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/// <summary>
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/// 对可空类型进行判断转换
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/// </summary>
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/// <param name="value">DataReader字段的值</param>
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/// <param name="conversionType">该字段的类型</param>
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/// <returns></returns>
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private static object CheckType(object value, Type conversionType)
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{
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if (conversionType.IsGenericType && conversionType.GetGenericTypeDefinition().Equals(typeof(Nullable<>)))
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{
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if (value == null)
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return null;
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System.ComponentModel.NullableConverter nullableConverter =
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new System.ComponentModel.NullableConverter(conversionType);
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conversionType = nullableConverter.UnderlyingType;
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}
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if (typeof(System.Enum).IsAssignableFrom(conversionType))
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{
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return Enum.Parse(conversionType, value.ToString());
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}
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return Convert.ChangeType(value, conversionType);
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}
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}
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using System;
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using System.Collections.Generic;
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using System.Data.Common;
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using System.Reflection;
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using Microsoft.EntityFrameworkCore;
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namespace Hncore.Infrastructure.EF
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{
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public static class Sql
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{
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/// <summary>
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/// 执行Reader
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/// </summary>
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/// <param name="dbContext"></param>
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/// <param name="sql"></param>
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/// <param name="action"></param>
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public static void Reader(this DbContext dbContext, string sql, Action<DbDataReader> action)
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{
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var conn = dbContext.Database.GetDbConnection();
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try
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{
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conn.Open();
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using (var command = conn.CreateCommand())
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{
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string query = sql;
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command.CommandText = query;
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using (DbDataReader reader = command.ExecuteReader())
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{
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if (reader.HasRows)
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{
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while (reader.Read())
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{
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action(reader);
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}
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}
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}
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}
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}
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finally
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{
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conn.Close();
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}
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}
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/// <summary>
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/// 执行Query
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/// </summary>
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/// <typeparam name="T"></typeparam>
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/// <param name="dbContext"></param>
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/// <param name="sql"></param>
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/// <returns></returns>
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public static List<T> SqlQuery<T>(this DbContext dbContext, string sql)
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{
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List<T> list = new List<T>();
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var conn = dbContext.Database.GetDbConnection();
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try
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{
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conn.Open();
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using (var command = conn.CreateCommand())
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{
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string query = sql;
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command.CommandText = query;
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using (DbDataReader reader = command.ExecuteReader())
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{
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if (reader.HasRows)
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{
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list = reader.ReaderToList<T>();
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}
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}
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}
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}
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finally
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{
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conn.Close();
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}
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return list;
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}
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/// <summary>
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/// 执行Sql命令
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/// </summary>
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/// <param name="dbContext"></param>
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/// <param name="sql"></param>
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/// <returns></returns>
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public static int ExecuteSql(this DbContext dbContext, string sql)
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{
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var conn = dbContext.Database.GetDbConnection();
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int rowAffected = 0;
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try
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{
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conn.Open();
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using (var command = conn.CreateCommand())
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{
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command.CommandText = sql;
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rowAffected = command.ExecuteNonQuery();
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}
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}
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finally
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{
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conn.Close();
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}
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return rowAffected;
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}
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/// <summary>
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/// DataReader转泛型
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/// </summary>
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/// <typeparam name="T">传入的实体类</typeparam>
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/// <param name="objReader">DataReader对象</param>
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/// <returns></returns>
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public static List<T> ReaderToList<T>(this DbDataReader objReader)
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{
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using (objReader)
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{
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List<T> list = new List<T>();
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//获取传入的数据类型
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Type modelType = typeof(T);
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//遍历DataReader对象
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while (objReader.Read())
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{
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//使用与指定参数匹配最高的构造函数，来创建指定类型的实例
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T model = Activator.CreateInstance<T>();
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for (int i = 0; i < objReader.FieldCount; i++)
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{
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//判断字段值是否为空或不存在的值
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if (!IsNullOrDBNull(objReader[i]))
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{
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//匹配字段名
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PropertyInfo pi = modelType.GetProperty(objReader.GetName(i),
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BindingFlags.GetProperty | BindingFlags.Public | BindingFlags.Instance |
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BindingFlags.IgnoreCase);
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if (pi != null)
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{
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//绑定实体对象中同名的字段
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pi.SetValue(model, CheckType(objReader[i], pi.PropertyType), null);
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}
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}
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}
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list.Add(model);
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}
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return list;
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}
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}
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/// <summary>
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/// 判断指定对象是否是有效值
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/// </summary>
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/// <param name="obj"></param>
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/// <returns></returns>
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private static bool IsNullOrDBNull(object obj)
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{
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return (obj == null || (obj is DBNull)) ? true : false;
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}
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/// <summary>
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/// 对可空类型进行判断转换
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/// </summary>
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/// <param name="value">DataReader字段的值</param>
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/// <param name="conversionType">该字段的类型</param>
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/// <returns></returns>
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private static object CheckType(object value, Type conversionType)
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{
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if (conversionType.IsGenericType && conversionType.GetGenericTypeDefinition().Equals(typeof(Nullable<>)))
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{
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if (value == null)
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return null;
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System.ComponentModel.NullableConverter nullableConverter =
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new System.ComponentModel.NullableConverter(conversionType);
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conversionType = nullableConverter.UnderlyingType;
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}
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if (typeof(System.Enum).IsAssignableFrom(conversionType))
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{
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return Enum.Parse(conversionType, value.ToString());
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}
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return Convert.ChangeType(value, conversionType);
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}
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}
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}
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