将泛型集合类(List<T>)转换成DataTable,返回的DataTable所有列的数据类型为string型,且列顺序与字符串提供的字段顺序一致

来源：互联网发布：零基础学软件编程编辑：程序博客网时间：2024/05/18 13:07

主要用于数据前台展示,所以为了方便,都转成了string类型.

        /// <summary>            /// 将泛型集合类转换成DataTable,返回的DataTable所有列的数据类型为string型,且列顺序与字符串提供的字段顺序一致        /// </summary>            /// <typeparam name="T">集合项类型</typeparam>            /// <param name="list">集合</param>            /// <param name="propertyName">需要返回的列的列名,可控制列顺序</param>            /// <returns>数据集(表) 所有列为string类型</returns>            public static DataTable ToDataTable<T>(IList<T> list, params string[] propertyName)        {            List<string> propertyNameList = new List<string>();            if (propertyName != null)                propertyNameList.AddRange(propertyName);            DataTable result = new DataTable();            if (list.Count > 0)            {                PropertyInfo[] propertys = list[0].GetType().GetProperties();                foreach (var item in propertyNameList)                {                    result.Columns.Add(item,"".GetType());                }                for (int i = 0; i < list.Count; i++)                {                    ArrayList tempList = new ArrayList();                    foreach (var item in propertyNameList)                    {                        tempList.Add(propertys.First(p=>p.Name==item).GetValue(list[i], null));                    }                    object[] array = tempList.ToArray();                    result.LoadDataRow(array, true);                }            }            return result;        }

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