Question

如何在将数据显示到转发器之前对数据进行排序我编写了下面的代码，并想知道如何按姓氏排序数据，而不依赖于sql server。我很想通过LINQ对它进行排序，这是可能的。你能给我一个关于如何根据我的代码对数据进行排序的例子。

web窗体

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <div>
        <asp:Repeater ID="Repeater1" runat="server">
            <HeaderTemplate>
                <table cellspacing="1"  border="1">
                    <tr>
                        <td>First Name</td>
                        <td>Last Name</td>
                    </tr>
            </HeaderTemplate>
            <ItemTemplate>
                <tr>
                    <td><%# DataBinder.Eval(Container.DataItem, "FirstName") %> </td>
                    <td><%# DataBinder.Eval(Container.DataItem, "LastName") %> </td>
                </tr>
            </ItemTemplate>
            <FooterTemplate>
                </table>
            </FooterTemplate>
        </asp:Repeater>
    </div>
</body>
</html>

代码

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

public class OFullName
{
    private string firstName;
    public string FirstName
    {
        get
        {
            return firstName;
        }
    }
    private string lastName;
    public string LastName
    {
        get
        {
            return lastName;
        }
    }
    public OFullName(string FirstName, string LastName)
    {
        firstName = FirstName;
        lastName = LastName;
    }
}

public partial class _Default : System.Web.UI.Page
{
    public static Random random = new Random();// The random number sequence
    private static string ShuffleString(string StringInput)
    {
             //Create new string from the reordered char array
            string rand = new string(StringInput.ToCharArray().
            OrderBy(s => (random.Next(2) % 2) == 0).ToArray());
        return rand;
    }

    protected void Page_Load(object sender, EventArgs e)
    {


        ArrayList xNames = new ArrayList();
        string TestString = "123ABCDEFGHIJK";
        for (int i = 1; i <= 10; i++)
        {
            xNames.Add(new OFullName(ShuffleString(TestString), ShuffleString(TestString)));
        }

        Repeater1.DataSource = xNames;//Add data from the Array list
        //How to sort data?
        Repeater1.DataBind();//Bind data

    }
}

Answer 1

按姓氏排序：

    Repeater1.DataSource = xNames.OrderBy(item => item.LastName);
    Repeater1.DataBind();

Answer 2

我会使用泛型：

protected void Page_Load(object sender, EventArgs e)
{


    var xNames = new List<OFullName>();
    string TestString = "123ABCDEFGHIJK";
    for (int i = 1; i <= 10; i++)
    {
        xNames.Add(new OFullName(ShuffleString(TestString), ShuffleString(TestString)));
    }

    Repeater1.DataSource = xNames.OrderBy(x => x.LastName); // sorts by last name Ascending. Use OrderByDesc to sort descending.

    Repeater1.DataBind();//Bind data

}

如何在将数据显示到转发器之前对其进行排序？

2 个答案: