C# 在应用程序设置中保存字典,并在启动时加载
我有C# 在应用程序设置中保存字典,并在启动时加载,c#,wpf,dictionary,settings,converter,C#,Wpf,Dictionary,Settings,Converter,我有字典,我想在重启应用程序时保存并还原它。据我所知,您无法将字典存储在c#中,因此请尝试解决此问题 目前,我已经在名为DB的设置中创建了字符串变量,并尝试使用如下内容: var settings = dict.ToArray(); var prop = Properties.Settings.Default.DB; {[john, 0,53]} {[ivone, 0,44]} etc. 并进行类似prop=settings的设置 到目前为止,我已经做到了这一点,尽管它现在正在发挥作用 p
字典
,我想在重启应用程序时保存并还原它。据我所知,您无法将字典存储在c#中,因此请尝试解决此问题
目前,我已经在名为DB
的设置中创建了字符串变量,并尝试使用如下内容:
var settings = dict.ToArray();
var prop = Properties.Settings.Default.DB;
{[john, 0,53]}
{[ivone, 0,44]}
etc.
并进行类似prop=settings的设置代码>
到目前为止,我已经做到了这一点,尽管它现在正在发挥作用
private void SaveSettings()
{
var settings = spamPercentage.ToArray();
var prop = Properties.Settings.Default.DB;
string res = String.Join(",", settings);
prop = res;
}
private void LoadSettings()
{
var prop = Properties.Settings.Default.DB;
var dictionary = prop.ToDictionary(item => item.Key,
item => item.Value);
}
编辑
字典中的值如下所示:
var settings = dict.ToArray();
var prop = Properties.Settings.Default.DB;
{[john, 0,53]}
{[ivone, 0,44]}
etc.
@编辑
利用Julien JSON的想法,我提出:
string prop = Properties.Settings.Default.DB;
private void SaveSettings()
{
prop = JsonConvert.SerializeObject(dict);
Properties.Settings.Default.Save();
}
private void LoadSettings()
{
dict= JsonConvert.DeserializeObject<Dictionary<string, double>>(prop);
}
string prop=Properties.Settings.Default.DB;
私有void SaveSettings()
{
prop=JsonConvert.SerializeObject(dict);
Properties.Settings.Default.Save();
}
私有void加载设置()
{
dict=JsonConvert.DeserializeObject(prop);
}
当我点击程序并使用SaveSettings方法时,我可以看到它有值。然后我重新启动程序,并尝试加载设置,它们为空。我不久前遇到了类似的问题。最后,我使用将字典序列化为字符串,将其存储在应用程序设置中,并在需要时将其反序列化回字典
string strDictionaryAsString = JsonConvert.SerializeObject(dtnDictionary);
var dtnDictionary = JsonConvert.DeserializeObject<Dictionary<string, double>>(strDictionaryAsString );
string strdictionaryastring=JsonConvert.SerializeObject(dtnDictionary);
var dtnDictionary=JsonConvert.DeserializeObject(strDictionaryaString);
我使用它在wpf中存储我的datagrid设置
[XmlRoot("Dictionary")]
public class SerializableDictionary<TKey, TValue> : Dictionary<TKey, TValue>, IXmlSerializable
{
#region IXmlSerializable Members
public System.Xml.Schema.XmlSchema GetSchema()
{
return null;
}
public void ReadXml(System.Xml.XmlReader reader)
{
var keySerializer = new XmlSerializer(typeof(TKey));
var valueSerializer = new XmlSerializer(typeof(TValue));
bool wasEmpty = reader.IsEmptyElement;
reader.Read();
if (wasEmpty)
return;
while (reader.NodeType != System.Xml.XmlNodeType.EndElement)
{
reader.ReadStartElement("item");
reader.ReadStartElement("key");
var key = (TKey)keySerializer.Deserialize(reader);
reader.ReadEndElement();
reader.ReadStartElement("value");
var value = (TValue)valueSerializer.Deserialize(reader);
reader.ReadEndElement();
this.Add(key, value);
reader.ReadEndElement();
reader.MoveToContent();
}
reader.ReadEndElement();
}
public void WriteXml(System.Xml.XmlWriter writer)
{
var keySerializer = new XmlSerializer(typeof(TKey));
var valueSerializer = new XmlSerializer(typeof(TValue));
foreach (TKey key in this.Keys)
{
writer.WriteStartElement("item");
writer.WriteStartElement("key");
keySerializer.Serialize(writer, key);
writer.WriteEndElement();
writer.WriteStartElement("value");
TValue value = this[key];
valueSerializer.Serialize(writer, value);
writer.WriteEndElement();
writer.WriteEndElement();
}
}
#endregion
}
[XmlRoot(“字典”)]
公共类SerializableDictionary:Dictionary,IXmlSerializable
{
#区域IXmlSerializable成员
public System.Xml.Schema.XmlSchema GetSchema()
{
返回null;
}
public void ReadXml(System.Xml.XmlReader)
{
var keySerializer=新的XmlSerializer(typeof(TKey));
var-valueSerializer=新的XmlSerializer(typeof(TValue));
bool waspempy=reader.isemptyelment;
reader.Read();
如果(为空)
返回;
while(reader.NodeType!=System.Xml.XmlNodeType.EndElement)
{
reader.ReadStartElement(“项目”);
reader.ReadStartElement(“密钥”);
var key=(TKey)keySerializer.反序列化(reader);
reader.ReadEndElement();
reader.ReadStartElement(“价值”);
var value=(TValue)valueSerializer.Deserialize(reader);
reader.ReadEndElement();
添加(键、值);
reader.ReadEndElement();
reader.MoveToContent();
}
reader.ReadEndElement();
}
public void WriteXml(System.Xml.XmlWriter)
{
var keySerializer=新的XmlSerializer(typeof(TKey));
var-valueSerializer=新的XmlSerializer(typeof(TValue));
foreach(此.Keys中的TKey键)
{
编写人。书面启动项(“项目”);
writer.writeStart元素(“键”);
序列化(编写器,键);
writer.writeedelement();
writer.writeStarteElement(“值”);
t值=此[键];
序列化(写入程序,值);
writer.writeedelement();
writer.writeedelement();
}
}
#端区
}
设置:
[SettingsManageabilityAttribute(SettingsManageability.Roaming)]
public abstract class GridSettingsBase : ApplicationSettingsBase, IGridSettings
{
[UserScopedSettingAttribute()]
[DefaultSettingValue("")]
[SettingsSerializeAs(SettingsSerializeAs.Xml)]
public SerializableDictionary<string, int> GridDisplayIndexList
{
get { return (SerializableDictionary<string, int>)this["GridDisplayIndexList"]; }
set { this["GridDisplayIndexList"] = value; }
}
[UserScopedSettingAttribute()]
[DefaultSettingValue("")]
[SettingsSerializeAs(SettingsSerializeAs.Xml)]
public SerializableDictionary<string, Visibility> GridColumnVisibilityList
{
get { return (SerializableDictionary<string, Visibility>)this["GridColumnVisibilityList"]; }
set { this["GridColumnVisibilityList"] = value; }
}
[UserScopedSettingAttribute()]
[DefaultSettingValue("")]
[SettingsSerializeAs(SettingsSerializeAs.Xml)]
public SerializableDictionary<string, double> GridColumnWidthList
{
get { return (SerializableDictionary<string, double>)this["GridColumnWidthList"]; }
set { this["GridColumnWidthList"] = value; }
}
[UserScopedSettingAttribute()]
[DefaultSettingValue("")]
[SettingsSerializeAs(SettingsSerializeAs.Xml)]
public List<SortDescription> GridSortDescriptionList
{
get { return (List<SortDescription>)this["GridSortDescriptionList"]; }
set { this["GridSortDescriptionList"] = value; }
}
protected GridSettingsBase()
{
Application.Current.Exit += OnExit;
}
private void OnExit(object sender, ExitEventArgs e)
{
this.Save();
}
}
[SettingsManageabilityAttribute(SettingsManageability.Roaming)]
公共抽象类GridSettingsBase:ApplicationSettingsBase,IGridSettings
{
[UserScopedSettingAttribute()]
[默认设置值(“”)
[SettingsSerializeAs(SettingsSerializeAs.Xml)]
public SerializableDictionary GridDisplayIndexList
{
获取{return(SerializableDictionary)this[“GridDisplayIndexList”];}
设置{this[“GridDisplayIndexList”]=value;}
}
[UserScopedSettingAttribute()]
[默认设置值(“”)
[SettingsSerializeAs(SettingsSerializeAs.Xml)]
public SerializableDictionary GridColumnVisibilityList
{
获取{return(SerializableDictionary)this[“GridColumnVisibilityList”];}
设置{this[“GridColumnVisibilityList”]=value;}
}
[UserScopedSettingAttribute()]
[默认设置值(“”)
[SettingsSerializeAs(SettingsSerializeAs.Xml)]
公共序列化字典GridColumnWidthList
{
获取{return(SerializableDictionary)this[“GridColumnWidthList”];}
设置{this[“GridColumnWidthList”]=value;}
}
[UserScopedSettingAttribute()]
[默认设置值(“”)
[SettingsSerializeAs(SettingsSerializeAs.Xml)]
公共列表GridSortDescriptionList
{
获取{return(List)this[“GridSortDescriptionList”];}
设置{this[“GridSortDescriptionList”]=value;}
}
受保护的GridSettingsBase()
{
Application.Current.Exit+=OnExit;
}
私有void OnExit(对象发送方,ExitEventArgs e)
{
这是Save();
}
}
不应将此类数据写入设置。一个更好的主意是以xml文件为例。你能看看这里吗,我想它会回答你的问题,而第一个可行,在程序重新启动后序列化,反序列化看到变量中只有null。你能检查我的编辑吗?我感觉设置没有保存。请确保您的设置是用户范围的,而不是应用程序范围的。(你可以在项目页面的“设置”选项卡中进行更改)。这太棒了。这太棒了!