如何将自定义user.config xml加载到字典中

debugcn 发表于 Dev

丹尼尔

我需要手动将较旧的user.config与新设置合并，现在我只想将旧值加载到字典中：

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <userSettings>
        <myprog.Properties.Settings>
            <setting name="openkey" serializeAs="String">
                <value>o</value>
            </setting> 
            <setting name="licenseAccepted" serializeAs="String">
                <value>True</value>
            </setting>

代码：

Dictionary<string, string> myDictionary = new Dictionary<string, string>();
XmlDocument document = new XmlDocument();
document.Load(OlderSettingLocation);
XmlNodeList s = document.SelectNodes("/configuration/userSettings/myprog.Properties.Settings/setting");
            foreach (XmlNode node in s)
            {
                myDictionary.Add(node.Attributes["name"].Value, node.Attributes["value"].Value);
            }

这导致node.Attributes [“ name”]。Value在第一个循环中是“设置”而不是“ openkey”，并且值是null

杰登

请参见下面的代码。我提供了两种解决方案。首先是每个键都是唯一的，其次是每个键有多个值。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;

namespace ConsoleApplication1
{
    class Program
    {
        const string FILENAME = @"c:\temp\test.xml";
        static void Main(string[] args)
        {

            XDocument doc = XDocument.Load(FILENAME);

            Dictionary<string, string> dict1 = doc.Descendants("setting").Select(x => new {
                name = (string)x.Attribute("name"),
                value = (string)x.Element("value")
            }).GroupBy(x => x.name, y => y.value)
            .ToDictionary(x => x.Key, y => y.FirstOrDefault());


            Dictionary<string, List<string>> dict2 = doc.Descendants("setting").Select(x => new {
                name = (string)x.Attribute("name"),
                value = (string)x.Element("value")
            }).GroupBy(x => x.name, y => y.value)
            .ToDictionary(x => x.Key, y => y.ToList());

        }
    }
}

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