【Winform】ComboBox赋值取值

MaybeHC

发布于 2024-04-23 19:03:10

30400

代码可运行

文章被收录于专栏：技术之路

运行总次数：0

代码可运行

下面我以做的项目中的一部分来介绍ComboBox怎么赋值和取值目前有ComboBox，name=cboClass

一、ComboBox赋值

            this.cboClass.DataSource = objStudentClassService.GetAllClasses();
            this.cboClass.DisplayMember = "ClassName";
            this.cboClass.ValueMember = "ClassId";
            this.cboClass.SelectedIndex = -1;

        /// <summary>
        /// 获取所有班级对象
        /// </summary>
        /// <returns></returns>
        public List<StudentClass> GetAllClasses()
        {
            string sql = "select ClassName,ClassId from StudentClass";
            SqlDataReader objReader = SQLHelper.GetReader(sql);
            List<StudentClass> list = new List<StudentClass>();
            while (objReader.Read())
            {
                list.Add(new StudentClass()
                {
                    ClassId = Convert.ToInt32(objReader["ClassId"]),
                    ClassName = objReader["ClassName"].ToString()

                });
            }
            objReader.Close();
            return list;
        }

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