C# 将通用列表绑定到转发器 - ASP.NET

Binding a generic list to a repeater - ASP.NET

提问by DotnetDude

I am trying to bind a List<AreaField>to a repeater. I have converted the list into an array by using the ToArray()method and now have a array of AreaField[]

我正在尝试将 a 绑定List<AreaField>到中继器。我已使用该ToArray()方法将列表转换为数组，现在有一个数组AreaField[]

Here's my class hierarchy

这是我的类层次结构

public class AreaFields
{
    public List<Fields> Fields { set; get; }
}

public class Fields
{
    public string Name { set; get; }
    public string Value {set; get; }
}

In the aspx, I would like to bind it a repeater (something like this)

在aspx中，我想把它绑定一个中继器（像这样）

DataBinder.Eval(Container.DataItem, "MyAreaFieldName1")

The MyAreaFieldName1 is the value of the Name property in the AreaFieldItem class.

MyAreaFieldName1 是 AreaFieldItem 类中 Name 属性的值。

采纳答案by bendewey

You may want to create a subRepeater.

您可能想要创建一个子中继器。

<asp:Repeater ID="SubRepeater" runat="server" DataSource='<%# Eval("Fields") %>'>
  <ItemTemplate>
    <span><%# Eval("Name") %></span>
  </ItemTemplate>
</asp:Repeater>

You can also cast your fields

你也可以投射你的领域

<%# ((ArrayFields)Container.DataItem).Fields[0].Name %>

Finally you could do a little CSV Function and write out your fields with a function

最后你可以做一点 CSV 函数并用函数写出你的字段

<%# GetAsCsv(((ArrayFields)Container.DataItem).Fields) %>

public string GetAsCsv(IEnumerable<Fields> fields)
{
  var builder = new StringBuilder();
  foreach(var f in fields)
  {
    builder.Append(f);
    builder.Append(",");
  }
  builder.Remove(builder.Length - 1);
  return builder.ToString();
}

回答by Solburn

It is surprisingly simple...

出奇的简单……

Code behind:

后面的代码：

// Here's your object that you'll create a list of
private class Products
{
    public string ProductName { get; set; }
    public string ProductDescription { get; set; }
    public string ProductPrice { get; set; }
}

// Here you pass in the List of Products
private void BindItemsInCart(List<Products> ListOfSelectedProducts)
{   
    // The the LIST as the DataSource
    this.rptItemsInCart.DataSource = ListOfSelectedProducts;

    // Then bind the repeater
    // The public properties become the columns of your repeater
    this.rptItemsInCart.DataBind();
}

ASPX code:

ASPX 代码：

<asp:Repeater ID="rptItemsInCart" runat="server">
  <HeaderTemplate>
    <table>
      <thead>
        <tr>
            <th>Product Name</th>
            <th>Product Description</th>
            <th>Product Price</th>
        </tr>
      </thead>
      <tbody>
  </HeaderTemplate>
  <ItemTemplate>
    <tr>
      <td><%# Eval("ProductName") %></td>
      <td><%# Eval("ProductDescription")%></td>
      <td><%# Eval("ProductPrice")%></td>
    </tr>
  </ItemTemplate>
  <FooterTemplate>
    </tbody>
    </table>
  </FooterTemplate>
</asp:Repeater>

I hope this helps!

我希望这有帮助！

回答by SohelElite

Code Behind:

背后的代码：

public class Friends
{
    public string   ID      { get; set; }
    public string   Name    { get; set; }
    public string   Image   { get; set; }
}

protected void Page_Load(object sender, EventArgs e)
{
        List <Friends> friendsList = new List<Friends>();

        foreach (var friend  in friendz)
        {
            friendsList.Add(
                new Friends { ID = friend.id, Name = friend.name }    
            );

        }

        this.rptFriends.DataSource = friendsList;
        this.rptFriends.DataBind();
}

---

---

.aspx Page

.aspx 页面

<asp:Repeater ID="rptFriends" runat="server">
            <HeaderTemplate>
                <table border="0" cellpadding="0" cellspacing="0">
                    <thead>
                        <tr>
                            <th>ID</th>
                            <th>Name</th>
                        </tr>
                    </thead>
                    <tbody>
            </HeaderTemplate>
            <ItemTemplate>
                    <tr>
                        <td><%# Eval("ID") %></td>
                        <td><%# Eval("Name") %></td>
                    </tr>
            </ItemTemplate>
            <FooterTemplate>
                    </tbody>
                </table>
            </FooterTemplate>
        </asp:Repeater>

回答by Balázs Szabó

You should use ToList() method. (Don't forget about System.Linq namespace)

您应该使用 ToList() 方法。（不要忘记 System.Linq 命名空间）

ex.:

前任。：

IList<Model> models = Builder<Model>.CreateListOfSize(10).Build();
List<Model> lstMOdels = models.ToList();