【c#】List转Datatable

【c#】List转Datatable

  /// <summary>
        /// list转化为table
        /// </summary>
        /// <typeparam name="T"></typeparam>
        /// <param name="entitys"></param>
        /// <returns></returns>
        public static DataTable ListToDataTable<T>(List<T> entitys)
        {
    
    

            //检查实体集合不能为空
            if (entitys == null || entitys.Count < 1)
            {
    
    
                return new DataTable();
            }

            //取出第一个实体的所有Propertie
            Type entityType = entitys[0].GetType();
            PropertyInfo[] entityProperties = entityType.GetProperties();

            //生成DataTable的structure
            //生产代码中,应将生成的DataTable结构Cache起来,此处略
            DataTable dt = new DataTable("dt");
            for (int i = 0; i < entityProperties.Length; i++)
            {
    
    
                //dt.Columns.Add(entityProperties[i].Name, entityProperties[i].PropertyType);
                dt.Columns.Add(entityProperties[i].Name);
            }

            //将所有entity添加到DataTable中
            foreach (object entity in entitys)
            {
    
    
                //检查所有的的实体都为同一类型
                if (entity.GetType() != entityType)
                {
    
    
                    throw new Exception("要转换的集合元素类型不一致");
                }
               	DataRow dr=new DataRow();
               	dt.Rows.Add(dr);
               	int rowCount=dt.Rows.Count();
                object[] entityValues = new object[entityProperties.Length];
                for (int i = 0; i < entityProperties.Length; i++)
                {
    
    
                    entityValues[i] = entityProperties[i].GetValue(entity, null);
                    //给当前行的每列加数据
                    dt.Rows[rowCount].[i]=entityValues[i];
                }
            }
            return dt;
        }


原创看这里哦,我在原创的基础上添加了点点改动,原创的反射生成的table是每一个列为对象

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转载自blog.csdn.net/KJJfighting/article/details/130349949