只能在以管理员身份运行时保存/修改自定义配置部分?

时间:2016-05-06 15:48:15

标签: c# configuration app-config configuration-files

我写了一个自定义配置部分,集合和元素来添加/修改到我的app.config。一切似乎进展顺利,它在Visual Studio中运行良好。但是,当我安装应用程序并且需要将新数据保存到自定义配置部分时,会抛出以下异常:

System.Configuration.ConfigurationErrorsException: Unable to save config to file '{path to config file}'

有趣的是,如果我以管理员模式运行应用程序,一切正常。有什么理由它只能作为管理员工作吗?

修改

我应该注意,我不认为这是一个许可问题,因为a)我们有其他应用程序可以修改他们的app.conf的<applicationSettings>就好了,b)log4net可以编写它日志文件就好了。

自定义配置元素:

public class AuditorColorElement : ConfigurationElement
{
    public AuditorColorElement()
    {
    }

    public AuditorColorElement(Color color, string auditor)
    {
        Color = color;
        Auditor = auditor;
    }

    [ConfigurationProperty(nameof(Color), IsRequired = true, IsKey = true)]
    public Color Color
    {
        get { return (Color)base[nameof(Color)]; }
        set { this[nameof(Color)] = value; }
    }

    [ConfigurationProperty(nameof(Auditor), IsRequired = true)]
    public string Auditor
    {
        get { return (string)base[nameof(Auditor)]; }
        set { this[nameof(Auditor)] = value; }
    }
}

自定义配置部分:

[ConfigurationCollection(typeof(AuditorColorElement))]
public class AuditorColorElementCollection : ConfigurationElementCollection, IEnumerable<AuditorColorElement>
{
    internal const string PropertyName = "AuditorColors";

    public AuditorColorElementCollection() : base()
    {
    }

    public AuditorColorElementCollection(AuditorColorElementCollection collection)
    {
        foreach (AuditorColorElement element in collection)
        {
            Add(element);
        }
    }

    public override ConfigurationElementCollectionType CollectionType
    {
        get
        {
            return ConfigurationElementCollectionType.AddRemoveClearMapAlternate;
        }
    }

    protected override string ElementName
    {
        get
        {
            return PropertyName;
        }
    }

    public AuditorColorElement this[int idx]
    {
        get { return (AuditorColorElement)BaseGet(idx); }
    }

    protected override bool IsElementName(string elementName)
    {
        return elementName.Equals(PropertyName,
        StringComparison.InvariantCultureIgnoreCase);
    }

    public override bool IsReadOnly()
    {
        return false;
    }

    protected override ConfigurationElement CreateNewElement()
    {
        return new AuditorColorElement();
    }

    protected override object GetElementKey(ConfigurationElement element)
    {
        return ((AuditorColorElement)(element)).Color;
    }

    public void Add(AuditorColorElement element)
    {
        BaseAdd(element);
    }

    public void Clear()
    {
        BaseClear();
    }

    public void Remove(AuditorColorElement element)
    {
        BaseRemove(element.Color);
    }

    public void RemoveAt(int index)
    {
        BaseRemoveAt(index);
    }

    public void Remove(Color color)
    {
        BaseRemove(color);
    }

    public object GetKey(object key)
    {
        return BaseGet(key);
    }

    public bool ContainsKey(object key)
    {
        return GetKey(key) != null ? true : false;
    }

    public new IEnumerator<AuditorColorElement> GetEnumerator()
    {
        foreach (var key in this.BaseGetAllKeys())
        {
            yield return (AuditorColorElement)BaseGet(key);
        }
    }
}

自定义配置部分

public class AuditorColorSection : ConfigurationSection
{
    [ConfigurationProperty(nameof(AuditorColors), IsRequired = true, IsDefaultCollection = true)]
    [ConfigurationCollection(typeof(AuditorColorElementCollection),
        AddItemName = "add",
        ClearItemsName = "clear",
        RemoveItemName = "remove")]
    public AuditorColorElementCollection AuditorColors
    {
        get { return ((AuditorColorElementCollection)(base[nameof(AuditorColors)])); }
        set { base[nameof(AuditorColors)] = value; }
    }

    public AuditorColorSection()
    {
        AuditorColors = new AuditorColorElementCollection();
    }
}

1 个答案:

答案 0 :(得分:2)

我不喜欢使用System.Configuration命名空间中的方法来配置文件。 使用System.Configuration命名空间中的方法读取值绝不是问题。

只需使用LinqToXML,至少要检查是否存在问题。

我猜测您的应用已安装在C:\Program Data中,因此虽然可能与权限相关,但如果该假设正确,我怀疑System.Configuration.ConfigurationErrorsException: Unable to save config to file的根本原因是lock on the file, use this code to check