DateTimePicker选择“今天”后如何改为当前时间

Question

把DateTimePicker的 Format 属性设为 Custom  
 CustomFormat 属性设为 "yyyy-MM-dd HH:mm:ss"

Answer 1

你确定用的是DateTimePicker,而不是monthCalendar?

Answer 2

this.dateTimePicker1.ValueChanged += new EventHandler(dateTimePicker1_ValueChanged);
 this.dateTimePicker1.CustomFormat = "yyyy-MM-dd HH:mm:ss";void dateTimePicker1_ValueChanged(object sender, EventArgs e)
 {
          this.dateTimePicker1.Value = DateTime.Now;
 }

Answer 3

this.dateTimePicker1.ValueChanged += new EventHandler(dateTimePicker1_ValueChanged);
 this.dateTimePicker1.CustomFormat = "yyyy-MM-dd HH:mm:ss";
 
void dateTimePicker1_ValueChanged(object sender, EventArgs e)
 {
if( this.dateTimePicker1.Value.Date==DateTime.Now.Date)
{
          this.dateTimePicker1.Value = DateTime.Now;
}
 }

Answer 4

this.textBox1.Text = this.dateTimePicker1.Value.ToString();

Answer 5

或者你在DropDown事件里先把时间修改为当前时间,用户想改成别的只要不CloseUp就随便改了