Question

我想根据用户输入的生日来将值传递给文本框。如果用户少于15年，则"Borrow Books"字段的值应为4，否则应为8。请告诉我如何继续。

Answer 1

在日历html中Selection_Change

使用OnSelectionChanged="Selection_Change"日历事件，如下所示

void Selection_Change(Object sender, EventArgs e) 
{
    DateTime date1 = Calendar1.SelectedDate;
    var dateDiff=DateTime.Today-date1 ;
    var year=dateDiff.Year;
    var totalBook=year > 15 ? 8: 4;
    txtBorrowerBooks.Text =totalBook.ToString();

}

编辑1

void Selection_Change(Object sender, EventArgs e) 
{
    DateTime date1 = Calendar1.SelectedDate;
    DateTime zeroTime = new DateTime(1, 1, 1);
    var dateDiff=DateTime.Today-date1 ;
    var year=(zeroTime +dateDiff).Year;
    var totalBook=year > 15 ? 8: 4;
    txtBorrowerBooks.Text =totalBook.ToString();

}

Answer 2

我认为您必须向asp.net日历添加一个事件：Calendar.SelectionChanged事件

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.calendar.selectionchanged(v=vs.110).aspx

然后您的代码将是这样的：

前端：

 <asp:Calendar ID="calcBorrowerBorn" runat="server" OnSelectionChanged="Selection_Change" VisibleDate="2014-11-08" 
            BackColor="White" BorderColor="Black" BorderStyle="Solid" CellSpacing="1" 
            Font-Names="Verdana" Font-Size="9pt" ForeColor="Black" Height="250px" 
            NextPrevFormat="ShortMonth" ShowGridLines="True" Width="330px">
            <DayHeaderStyle Font-Bold="True" Font-Size="8pt" ForeColor="#333333" 
                Height="8pt" />
            <DayStyle BackColor="#CCCCCC" />
            <NextPrevStyle Font-Bold="True" Font-Size="8pt" ForeColor="White" />
            <OtherMonthDayStyle ForeColor="#999999" />
            <SelectedDayStyle BackColor="#333399" ForeColor="White" />
            <TitleStyle BackColor="#333399" BorderStyle="Solid" Font-Bold="True" 
                Font-Size="12pt" ForeColor="White" Height="12pt" />
            <TodayDayStyle BackColor="#999999" ForeColor="White" />
        </asp:Calendar>

后端：

void Selection_Change(Object sender, EventArgs e) 
  {
         DateTime userSelectedDate = Calendar1.SelectedDate;
           txtBorrowerBooks.Text = (GetAge(userSelectedDate) > 15)?"8":"4";
  }

public Int32 GetAge(DateTime dateOfBirth)
{
    var today = DateTime.Today;

    var a = (today.Year * 100 + today.Month) * 100 + today.Day;
    var b = (dateOfBirth.Year * 100 + dateOfBirth.Month) * 100 + dateOfBirth.Day;

    return (a - b) / 10000;
}

如何使用asp.net将值传递给文本框

2 个答案:

编辑1