用户控件内中继 [英] User Control Inside Repeater
问题描述
我有一个直放站内用户控件。 Repeater的数据源是从SQL Server。
I have a UserControl inside a repeater. The repeater's datasource is from SQL Server.
用户控制的的.cs - MoviePanel.ascx.cs：
User Control's .cs - MoviePanel.ascx.cs:
public int myMovieID { get; set; }
public string myMovieName { get; set; }
public string myMovieDescription { get; set; }
protected void Page_Load(object sender, EventArgs e)
{
MovieIDLbl.Text = myMovieID.ToString();
MovieNameLbl.Text = myMovieName;
DescriptionLbl.Text = myMovieDescription;
}
ASPX页面：
ASPX Page:
<asp:Repeater ID="Repeater1" DataSourceID="ListOfMoviesDS" runat="server">
<ItemTemplate>
<uc1:MovieDetailPanel runat="server" myMovieID='<%# Eval("MovieID") %>'
myMovieName='<%# Eval("movieName") %>'
myMovieDescription='<%# Eval("movieDescription") %>'
id="MovieDetailPanel1" />
<asp:Label ID="Label1" runat="server"
Text='<%# Eval("MovieID") %>'></asp:Label>
<asp:Label ID="Label2" runat="server"
Text='<%# Eval("movieName") %>'></asp:Label>
<asp:Label ID="Label3" runat="server"
Text='<%# Eval("movieDescription") %>'></asp:Label>
</ItemTemplate>
</asp:Repeater>
下面一件很奇怪的事情发生。这些值都没有得到传递给用户控件。但是，如果我把用户控件下方的标签和设置文本的eval（）它的工作原理。你可能会认为该用户控件可能是问题。但是，如果我手动输入的东西，比方说在＆LT的;％＃的eval（的movieName）％＆GT; 它被传递到用户的控制，并得到显示。
Here something very strange happens. The values are not getting passed to the UserControl. However, if I place Labels below the usercontrol and set text with Eval() it works. You might think the usercontrol might be the problem. But if I manually type something, say in place of <%# Eval("movieName") %> it gets passed to the user control and gets displayed.
我不知道！如果问题是eval（）函数标签不应该得到的文本。或者，如果问题是与用户控件我的手工文本不应该获得通过。我不知道为什么eval（）函数的值没有达到用户控件。
I have NO CLUE! If the problem is with Eval() Labels should not get the text as well. Or if the problem is with the UserControl my manual text shouldn't get passed. I have no idea why Eval()'s values is not reaching the UserControl.
推荐答案
您code是工作的罚款;我测试了它（见页面底部）。您可以尝试分配ItemDataBound事件里那些价值最坏的情况。
Your code is working fine; I tested it (see the bottom of the page). The worst case you can try assigning those value inside ItemDataBound event.
<asp:Repeater ID="Repeater1" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
<ItemTemplate>
<uc1:MoviePanel runat="server" id="MovieDetailPanel1" />
</ItemTemplate>
</asp:Repeater>
public class Movie
{
public int MovieID { get; set; }
public string MovieName { get; set; }
public string MovieDescription { get; set; }
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Repeater1.DataSource = new List<Movie>
{
new Movie {MovieID = 1, MovieName = "One", MovieDescription = "One hundred"},
new Movie {MovieID = 2, MovieName = "Two", MovieDescription = "Two hundreds"},
new Movie {MovieID= 3, MovieName = "Three", MovieDescription = "Three hundreds"},
};
Repeater1.DataBind();
}
}
protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item ||
e.Item.ItemType == ListItemType.AlternatingItem)
{
var movie = e.Item.DataItem as Movie;
var control = e.Item.FindControl("MovieDetailPanel1") as MoviePanel;
control.myMovieID = movie.MovieID;
control.myMovieDescription = movie.MovieDescription;
control.myMovieName = movie.MovieName;
}
}
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="WebDemo.WebForm1" %>
<%@ Register src="MoviePanel.ascx" tagname="MoviePanel" tagprefix="uc1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate>
<uc1:MoviePanel runat="server" mymovieid='<% #Eval("MovieID") %>'
mymoviename='<% #Eval("movieName") %>'
mymoviedescription='<% #Eval("movieDescription") %>'
id="MovieDetailPanel1" />
</ItemTemplate>
</asp:Repeater>
</form>
</body>
</html>
namespace WebDemo
{
public partial class WebForm1 : System.Web.UI.Page
{
public class Movie
{
public int MovieID { get; set; }
public string MovieName { get; set; }
public string MovieDescription { get; set; }
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
Repeater1.DataSource = new List<Movie>
{
new Movie {MovieID = 1, MovieName = "One", MovieDescription = "One hundred"},
new Movie {MovieID = 2, MovieName = "Two", MovieDescription = "Two hundreds"},
new Movie {MovieID= 3, MovieName = "Three", MovieDescription = "Three hundreds"},
};
Repeater1.DataBind();
}
}
}
}
<%@ Control Language="C#" AutoEventWireup="true"
CodeBehind="MoviePanel.ascx.cs" Inherits="WebDemo.MoviePanel" %>
<p>
<strong>Inside Control</strong>:
<asp:Label ID="MovieIDLbl" runat="server" />
<asp:Label ID="MovieNameLbl" runat="server" />
<asp:Label ID="DescriptionLbl" runat="server" />
</p>
namespace WebDemo
{
public partial class MoviePanel : System.Web.UI.UserControl
{
public int myMovieID { get; set; }
public string myMovieName { get; set; }
public string myMovieDescription { get; set; }
protected void Page_Load(object sender, EventArgs e)
{
MovieIDLbl.Text = myMovieID.ToString();
MovieNameLbl.Text = myMovieName;
DescriptionLbl.Text = myMovieDescription;
}
}
}
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