C#中基础知识积累

C#中，获取容器中所有控件

foreach (Control contr in this.palchangepassword.Controls)
            {
                contr.Visible = true;
            }

C#中，获取容器中某种控件

 foreach (Control con in this.Controls)
           {
               if (con.GetType() == typeof(Label))
               {
                   con.Visible = false;
               }
           }

C#获取系统时间

DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString("D2") + DateTime.Now.Day.ToString("D2") + DateTime.Now.Hour.ToString("D2") + DateTime.Now.Minute.ToString("D2") + DateTime.Now.Second.ToString("D2");

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数据绑定

                cboclass.ValueMember = "ID";
                cboclass.DisplayMember = "ClassName";
                cboclass.DataSource = dt;