如何从使用LINQ Asp.Net配置文件属性查询 [英] How to Query from Asp.Net Profile Properties using LINQ

问题描述

我有Asp.net配置文件属性Profile.Location，性别等

I have Asp.net profile property Profile.Location, Gender etc

我需要得到其位置属于所有用户的列表，以伦敦和性别=男

i need to get list of all users whose Location belongs to "London" and Gender = male

如何执行使用LINQ在Asp.net档案搜索

how do i perform a search on Asp.net Profile using LINQ

推荐答案

其实，你可以做到这一点。但是，你需要把一些事情的地方第一：

Actually, you can do it. But you need to put a couple of things in place first:

1. 的解析，并返回序列化的属性/值的函数


2. （可选），调用每个用户行功能的看法。因为有些ORM的支持与撰写用户自定义函数的查询这是可选的。我建议把到位的观点呢。

下面是我写的分析从aspnet_Profile表PropertyNames和PropertyValues​​String列值CLR函数。它返回一个属性列和值列的表。

Here's a CLR function that I wrote that parses the PropertyNames and PropertyValuesString column values from the aspnet_Profile table. It returns a table with a Property column and a Value column.

using System.Collections;
using System.Collections.Generic;
using System.Data.SqlTypes;
using System.Linq;
using System.Text.RegularExpressions;
using Microsoft.SqlServer.Server;

public partial class UserDefinedFunctions
{
    private static readonly Regex ProfileRegex = new Regex(@"([a-zA-Z]+):[A-Z]:(\d+):(\d+)");

    [SqlFunction(FillRowMethodName = "FillProfileRow",TableDefinition="Property nvarchar(250), Value nvarchar(2000)")]
    public static IEnumerable ParseProfileString(SqlString names, SqlString values)
    {
        var dict = ProfileRegex
            .Matches(names.Value)
            .Cast<Match>()
            .ToDictionary(
                x => x.Groups[1].Value,
                x => values.Value.Substring(int.Parse(x.Groups[2].Value), int.Parse(x.Groups[3].Value)));

        return dict;
    }

    public static void FillProfileRow(object obj, out string Property, out string Value)
    {
        var x = (KeyValuePair<string, string>) obj;
        Property = x.Key;
        Value = x.Value;
    }
};

部署功能，然后为您的用户配置文件数据的视图。这里有一个例子：

Deploy that function and then create a view for your user's profile data. Here's an example:

CREATE VIEW UsersView
AS

SELECT *
FROM (
    SELECT u.UserId
        ,u.Username
        ,m.Email
        ,f.Property
        ,f.Value
    FROM aspnet_Profile p
    INNER JOIN aspnet_Users u ON p.UserId = u.UserId
    INNER JOIN aspnet_Membership m ON m.UserId = u.Userid
    INNER JOIN aspnet_Applications a ON a.ApplicationId = m.ApplicationId
    CROSS APPLY ParseProfileString(p.PropertyNames, p.PropertyValuesString) f
    WHERE a.ApplicationName = 'MyApplication'
    ) src
pivot(min(value) FOR property IN (
            -- list your profile property names here
            FirstName, LastName, BirthDate
            )) pvt

瞧，您可以查询与SQL或您所选择的ORM的看法。我写了这一个在Linqpad：

Voila, you can query the view with SQL or the ORM of your choice. I wrote this one in Linqpad:

from u in UsersView
where u.LastName.StartsWith("ove") 
select u

这篇关于如何从使用LINQ Asp.Net配置文件属性查询的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！