如何使用 currentDate 变量在 asp.net 文本框控件中设置到达日期？

Question

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Request.aspx.cs" Inherits="XEx06Reservation.Request" %>

<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Chapter 6: Reservations</title>
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <script src="Scripts/jquery-1.9.1.min.js"></script>
    <script src="Scripts/bootstrap.min.js"></script>
    <link href="Content/bootstrap.min.css" rel="stylesheet" />
    <link href="Content/site.css" rel="stylesheet" />
    <style type="text/css">
        .auto-style1 {
            display: block;
            padding: 6px 12px;
            font-size: 14px;
            line-height: 1.42857143;
            color: #555;
            background-color: #fff;
            background-image: none;
            border: 1px solid #ccc;
            border-radius: 4px;
            -webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075);
            box-shadow: inset 0 1px 1px rgba(0,0,0,.075);
            -webkit-transition: border-color ease-in-out .15s,-webkit-box-shadow ease-in-out .15s;
            -o-transition: border-color ease-in-out .15s,box-shadow ease-in-out .15s;
            transition: border-color ease-in-out .15s,box-shadow ease-in-out .15s;
        }
        .auto-style2 {
            left: 0px;
            top: 0px;
            width: 1112px;
            height: 64px;
        }
    </style>
</head>
<body>
    <div class="container">
        <header class="jumbotron">
            <img src="Images/logo.png" alt="Royal Inns and Suites" />
        </header>

        <main>
            <form id="form1" runat="server" class="form-horizontal">
                <h1>Reservation Request</h1>

                <h3>Request data</h3>
                <div class="form-group">
                    <label class="col-sm-3 control-label">Arrival Date</label>
                    <div class="col-sm-4">
                        <asp:TextBox ID="txtArrivalDate" runat="server" CssClass="form-control" TextMode="Date"
                              Height="39px" Width="186px"></asp:TextBox>
                    </div>
                </div>
                <div class="form-group">
                    <label class="col-sm-3 control-label">Departure Date</label>
                    <div class="col-sm-4">
                        <!-- text box -->
                        <asp:TextBox ID="TextBox1" runat="server"  CssClass="form-control" TextMode="Date" Height="39px" Width="186px"></asp:TextBox>
                    </div>
                </div>
                <div class="form-group">
                    <label class="col-sm-3 control-label">Number of people</label>
                    <div class="col-sm-4">
                        <!-- drop-down -->
                   <asp:DropDownList ID="DropDownList3" runat="server" Height="39px" Width="186px">
                       <asp:ListItem>1</asp:ListItem>
                       <asp:ListItem>2</asp:ListItem>
                       <asp:ListItem>3</asp:ListItem>
                       <asp:ListItem>4</asp:ListItem>
                        </asp:DropDownList>
                    </div>
                </div>
                <div class="form-group">
                    <label class="col-sm-3 control-label">Bed type</label>
                    <div class="auto-style2">
                        <!-- radio buttons -->
&nbsp;
                        &nbsp;&nbsp;&nbsp;&nbsp;
                        <asp:RadioButton ID="RadioButton1" runat="server" Text="King" Selected="True" />
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                        <asp:RadioButton ID="RadioButton2" runat="server" Text="Two Queens"/>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
                        <asp:RadioButton ID="RadioButton3" runat="server"  Text="One Queen"/>
                    </div>
                </div>

                <h3>Special requests</h3>
                <div class="form-group">
                    <div class="col-sm-7">
                        <!-- multiline text box -->
                        <asp:TextBox ID="TextBox2" runat="server" CssClass="form-control" TextMode="MultiLine" Rows="4" Width="334px" ></asp:TextBox>
                    </div>
                </div>

                <h3>Contact information</h3>
                <div class="form-group">
                    <label class="col-sm-3 control-label">First Name</label>
                    <div class="col-sm-4">
                        <asp:TextBox ID="txtFirstName" runat="server" CssClass="auto-style1" Width="153px" Height="36px"></asp:TextBox>
                    </div>
                </div>
                <div class="form-group">
                    <label class="col-sm-3 control-label">Last Name</label>
                    <div class="col-sm-4">
                        <!-- text box -->
                        <asp:TextBox ID="TextBox3" runat="server" CssClass="form-control" Width="158px"></asp:TextBox>
                    </div>
                </div>
                <div class="form-group">
                    <label class="col-sm-3 control-label">Email address</label>
                    <div class="col-sm-4">
                        <!-- text box -->
                        <asp:TextBox ID="TextBox4" runat="server" CssClass="form-control" Width="159px" TextMode="Email"></asp:TextBox>
                    </div>
                </div>
                <div class="form-group">
                    <label class="col-sm-3 control-label">Telephone number</label>
                    <div class="col-sm-4">
                        <!-- text box -->
                        <asp:TextBox ID="TextBox5" runat="server" CssClass="form-control" Width="155px" TextMode="Phone"></asp:TextBox>
                    </div>
                </div>
                <div class="form-group">
                    <label class="col-sm-3 control-label">Preferred method</label>
                    <div class="col-sm-4">
                        <!-- drop down -->
                        <asp:DropDownList ID="DropDownList2" runat="server" CssClass="auto-style1"  Width="155px">
                            <asp:ListItem>Email</asp:ListItem>
                            <asp:ListItem>Telephone</asp:ListItem>
                        </asp:DropDownList>
                    </div>
                </div>

                <%-- Submit and Clear buttons --%>
                <div class="form-group">
                    <div class="col-sm-offset-3 col-sm-9">
                        <asp:Button ID="btnSubmit" runat="server" Text="Submit"
                             CssClass="btn btn-primary"  />
                        <asp:Button ID="btnClear" runat="server" Text="Clear"
                             CssClass="btn btn-primary"  />
                    </div>
                </div> 
            
                <%-- message label --%>
                <div class="form-group">
                    <div class="col-sm-offset-1 col-sm-11">
                        <asp:Label ID="lblMessage" runat="server" CssClass="text-info"></asp:Label>
                    </div>
                </div>

            </form>
        </main>

        <footer>
            <p>&copy; <asp:Label ID="lblYear" runat="server"></asp:Label> 
                Royal Inns and Suites</p>
        </footer>
    </div>
    
</body>
</html>

我想弄清楚每次页面加载时如何使用 currentDate 变量在该控件的框中设置到达日期（如 2017 年 10 月 10 日 - 10/10/2017）。这是我自己尝试过的代码，但每次我测试该页面时，都不会自动将任何内容放入该控件的文本框中。有人能帮我吗？除此 (https://www.quora.com/How-do-I-populate-date-automatically-in-a-text-box-in-asp-net) 之外还有其他来源吗？

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace XEx06Reservation
{
    public partial class Request : System.Web.UI.Page
    {
        private string currentDate = DateTime.Today.ToString("d"); 
        private string currentYear = DateTime.Today.Year.ToString();


        protected void Page_Load(object sender, EventArgs e)
        {   

                txtArrivalDate.Text = currentDate; 

        }




    }
}

Answer 1

我想这就是您要找的：-

在您的 .aspx 页面中：-

 <asp:Label ID="lblYear" runat="server"></asp:Label>
    <asp:TextBox ID="txtArrivalDate" runat="server"></asp:TextBox>

在您的 .aspx.cs 页面中：-

public partial class WebForm1 : System.Web.UI.Page
{
    private static readonly DateTime currentDate = new DateTime(2017, 10, 10);
    private string currentYear = DateTime.Today.Year.ToString();


    protected void Page_Load(object sender, EventArgs e)
    {
        txtArrivalDate.Text = currentDate.ToString();
        lblYear.Text = currentYear;
    }
}

如何使用 currentDate 变量在 asp.net 文本框控件中设置到达日期？

How can I use my currentDate variable to set the arrival date in the asp.net textbox control?

c#

asp.net

datetime-format