获取更新ListView中的UserControl文本框的值

Question

我有一个页面SendResults.aspx，它包含一个按钮和一个ListView，并将ItemTemplate设置为一个用户控件（3个标签和2个文本框），以从匹配对象获取数据。 在Page_Load上，我用数据填充List（这很好用）。 当按钮被点击时，我想在用户控件的文本框中输入用户输入，并用它做一些事情。 但是我总是得到初始值而不是更新的值。 下面是代码： 用户控制 “MatchControl.ascx”

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="MatchControl.ascx.cs" Inherits="TotoMondeal.Controls.MatchControl" %> 
<div> 
    <asp:Image ID="Team1FlagImage" runat="server" /> 
<asp:Label ID="Team1Label" runat="server" Width="150px"></asp:Label> 
<asp:TextBox ID="Team1TextBox" runat="server" MaxLength="2" TextMode="Number" Width="50px" AutoPostBack="true" OnTextChanged="Team1TextBox_TextChanged"></asp:TextBox> 
<asp:Label ID="Colon" runat="server" Font-Size="XX-Large" Text=":"></asp:Label> 
<asp:TextBox ID="Team2TextBox" runat="server" MaxLength="2" TextMode="Number" Width="50px"></asp:TextBox> 
<asp:Label ID="Team2Label" runat="server" Width="150px"></asp:Label> 
    <asp:Image ID="Team2FlagImage" runat="server" /> 
</div> 

用户控制代码隐藏：

public partial class MatchControl : System.Web.UI.UserControl 
{ 
      public Match Match 
    { 
     get 
     { 
      object obj = ViewState["Match"]; 
      return (obj == null) ? new Match() : (Match)obj; 
     } 
     set 
     { 
      ViewState["Match"] = value; 
     } 
    } 

    public string Team1Score 
    { 
     get { return Team1TextBox.Text; } 
     set { Team1TextBox.Text = value; } 
    } 
    public string Team2Score 
    { 
     get { return Team2TextBox.Text; } 
     set { Team2TextBox.Text = value; } 
    } 


    protected void Page_Load(object sender, EventArgs e) 
    { 
     Team1Label.Text = Match.Team1Name; 
     Team2Label.Text = Match.Team2Name; 

     Team1TextBox.Text = Match.Team1Score.ToString(); 
     Team2TextBox.Text = Match.Team2Score.ToString(); 

     Team1TextBox.Enabled = Match.EnableTextBox; 
     Team2TextBox.Enabled = Match.EnableTextBox; 

     Team1FlagImage.ImageUrl = @"~/FlagImages/" +Match.Team1Name + ".png"; 
     Team2FlagImage.ImageUrl = @"~/FlagImages/" + Match.Team2Name + ".png"; 

    } 


    protected void Team1TextBox_TextChanged(object sender, EventArgs e) 
    { 
     TextBox textBox = sender as TextBox; 

     if (textBox != null) 
     { 
      try 
      { 
       Match updatedMatch = new Match() 
       { 
        MatchId = Match.MatchId, 
        MatchDate = Match.MatchDate, 
        Result = Match.Result, 
        Team1Name = Match.Team1Name, 
        Team1Score = Convert.ToInt32(textBox.Text), 
        Team2Name = Match.Team2Name, 
        Team2Score = Match.Team2Score, 
        EnableTextBox = Match.EnableTextBox 
       }; 

       Match = updatedMatch; 
      } 
      catch (Exception ex) 
      { 
       throw ex; 
      } 
     } 
    } 

的SendResults.aspx：

<%@ Page Title="שלח תוצאות" Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="SendResults.aspx.cs" Inherits="TotoMondeal.SendResults" %> 
<%@ Register TagPrefix="TOTO" TagName="MatchControl" Src="~/Controls/MatchControl.ascx" %> 
<asp:Content ID="BodyContent" ContentPlaceHolderID="MainContent" runat="server"> 
    <h2><%: Title %>.</h2> 
    <div class="jumbotron"> 
     <asp:ListView ID="TodayMatchesList" runat="server"> 
      <ItemTemplate> 
       <TOTO:MatchControl ID="MatchControl" Match="<%# Container.DataItem %>" runat="server" /> 
      </ItemTemplate> 
     </asp:ListView> 

     <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" /> 

    </div> 
</asp:Content> 

SendResults code-behind：

public partial class SendResults : Page 
{ 
    protected void Page_Load(object sender, EventArgs e) 
    { 
      List<Match> matches = new List<Match>(); 
      matches = Queries.GetTodayMatches(DateTime.Now); 
      foreach (Match match in matches) 
      { 
       match.EnableTextBox = true; 
      } 
      this.TodayMatchesList.DataSource = matches; 
      this.TodayMatchesList.DataBind(); 
    } 

    protected void Button1_Click(object sender, EventArgs e) 
    { 
     for (int i = 0; i < TodayMatchesList.Items.Count; i++) 
     { 
      MatchControl match = (MatchControl)TodayMatchesList.Items[i].FindControl("MatchControl"); 
      TextBox textBox = (TextBox)match.FindControl("Team1TextBox"); 
      string txt = textBox.Text; 
     } 
    } 
} 

问题是，在这一行： TextBox textBox =（TextBox）match.FindControl（“Team1TextBox”）; string txt = textBox.Text;

我总是从数据库中获取初始值，而不是用户更新的输入。

请帮助我是新来的。

Answer 1

每次回传时都会覆盖您的列表。在Page_Load中添加这对于SendResults

if (!Page.IsPostBack) 
{ 
    List<Match> matches = new List<Match>(); 
    matches = Queries.GetTodayMatches(DateTime.Now); 
    ...etc... 

} 

除了检查的IsPostBack你需要处理在ViewState中保存的控制性能。由于这里建议：从后User control (ascx) and properties

例子：

public string Title { 
    get { return Convert.ToString(ViewState["Title"]); } 
    set { ViewState["Title"] = value; } 
} 

你这样做在你的控制类。