winform DateTimePicker时间控件 显示年月问题

Question

窗体拖一个DateTimePicker 控件属性设置:
this.dateTimePicker1.Format = DateTimePickerFormat.Custom;
this.dateTimePicker1.ShowUpDown = true;
this.dateTimePicker1.CustomFormat = "yyyy-MM";运行 选择月份的时候 一到2月就有异常
别的月份都没有事情``

Answer 1

this.dateTimePicker1.Format = DateTimePickerFormat.Custom; 
this.dateTimePicker1.ShowUpDown = true; 
this.dateTimePicker1.CustomFormat = "yyyy-MM"; 
this.dateTimePicker1.Value = Convert.ToDateTime("2009-05-01");窗体加载时就设置