使用反射机制用一个类实例的值为DataTable添加一行

 这里的类实例拥有的字段类型和数量大于等于DataTable中的列，类实例的字段对应DataTable中的一列，类实例还可以有自定义的字段，不包含在DataTable列中:

源代码如下：

   /// <SUMMARY>
        /// 依据反射机制从bean中取值向datatable新增行 
        /// </SUMMARY>   
        /// <PARAM name="obj" />要实例的对象   
        /// <PARAM name="dataTable" />DataTable
        public static void InstanNewDataRowFromBean(Object obj, DataTable dataTable)
        {
            //DataTable列为空!
            if (dataTable.Columns.Count < 1)
            {
                throw new Exception("DataTable列为空!");
            }

            DataRow dr = dataTable.NewRow();
            Type type = obj.GetType();                                  //获取对象类型
            PropertyInfo[] pInfos = type.GetProperties();
            try
            {
                for (int i = 0; i < dataTable.Columns.Count; i++)                         //循环所有列
                {
                    for (int j = 0; j < pInfos.Length; j++)                               //循环所有属性
                    {
                        //比较的作用是防止数据库列名的大小写和属性的大小写不一致
                        if (dataTable.Columns[i].ColumnName.ToLower() == pInfos[j].Name.ToLower())
                        {
                            PropertyInfo pInfo = type.GetProperty(pInfos[j].Name);     //反射机制,动态检索类属性

                            object beanValue = pInfo.GetValue(obj, null);
                            //不同的基本数据类型,比如用Convert方法转换成对应类型的值 
                            if (!Convert.IsDBNull(beanValue) && beanValue.ToString() != null)    //如果数据集中此列有值   
                            {
                                dr[i] = beanValue;
                            }
                            else
                            {
                                dr[i] = DBNull.Value;
                            }

                            break;
                        }
                    }
                }

                dataTable.Rows.Add(dr);
            }
            catch (Exception ex)
            {                                                    //不捕获异常,异常抛出由开发人员处理   
                throw ex;
            }
        }