C# 关闭应用程序后未保存复合设置值
保存功能结束时,将正确保存和检索复合设置。但是,在关闭VisualStudio运行时实例并再次运行项目后,复合值将恢复为默认值。这里可能出了什么问题 保存C# 关闭应用程序后未保存复合设置值,c#,uwp,win-universal-app,C#,Uwp,Win Universal App,保存功能结束时,将正确保存和检索复合设置。但是,在关闭VisualStudio运行时实例并再次运行项目后,复合值将恢复为默认值。这里可能出了什么问题 保存 private void SaveSettings() { var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings; var compositeTest = (Windows.Storage.Applicatio
private void SaveSettings()
{
var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
var compositeTest = (Windows.Storage.ApplicationDataCompositeValue)localSettings.Values["Test"];
// Save test
compositeTest["A"] = PropA;
compositeTest["B"] = PropB;
compositeTest["C"] = PropC;
// Retrieve test
var a = compositeTest["A"];
var b = compositeTest["B"];
var c = compositeTest["C"];
}
构建
private void BuildSettings()
{
var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
var compositeTest = (Windows.Storage.ApplicationDataCompositeValue)localSettings.Values["Test"];
if (compositeTest == null)
{
Windows.Storage.ApplicationDataCompositeValue composite = new Windows.Storage.ApplicationDataCompositeValue();
composite["A"] = PropA= 1;
composite["B"] = PropB= 1;
composite["C"] = PropC= 1;
localSettings.Values["Test"] = composite;
}
else
{
PropA= (int)compositeTest["A"];
PropB= (int)compositeTest["B"];
PropC= (int)compositeTest["C"];
}
}
您需要将复合设置添加到
LocalSettings
的值IPropertySet
:
private void SaveSettings()
{
var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
var compositeTest = new Windows.Storage.ApplicationDataCompositeValue();
compositeTest["A"] = "A";
localSettings.Values["Test"] = compositeTest;
}
private void BuildSettings()
{
var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
var compositeTest = localSettings.Values["Test"] as Windows.Storage.ApplicationDataCompositeValue;
var a = compositeTest["A"];
}
编辑:尝试重置localSettings.Values[“Test”]
键入SaveSettings()
方法:
private void SaveSettings()
{
var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
var compositeTest = (Windows.Storage.ApplicationDataCompositeValue)localSettings.Values["Test"];
// Save test
compositeTest["A"] = PropA;
compositeTest["B"] = PropB;
compositeTest["C"] = PropC;
// Retrieve test
var a = compositeTest["A"];
var b = compositeTest["B"];
var c = compositeTest["C"];
localSettings.Values["Test"] = compositeTest;
}
您需要将复合设置添加到
LocalSettings
的值IPropertySet
:
private void SaveSettings()
{
var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
var compositeTest = new Windows.Storage.ApplicationDataCompositeValue();
compositeTest["A"] = "A";
localSettings.Values["Test"] = compositeTest;
}
private void BuildSettings()
{
var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
var compositeTest = localSettings.Values["Test"] as Windows.Storage.ApplicationDataCompositeValue;
var a = compositeTest["A"];
}
编辑:尝试重置localSettings.Values[“Test”]
键入SaveSettings()
方法:
private void SaveSettings()
{
var localSettings = Windows.Storage.ApplicationData.Current.LocalSettings;
var compositeTest = (Windows.Storage.ApplicationDataCompositeValue)localSettings.Values["Test"];
// Save test
compositeTest["A"] = PropA;
compositeTest["B"] = PropB;
compositeTest["C"] = PropC;
// Retrieve test
var a = compositeTest["A"];
var b = compositeTest["B"];
var c = compositeTest["C"];
localSettings.Values["Test"] = compositeTest;
}
什么类型的
PropA
?什么类型的PropA
?我认为不需要在Save函数中使用“new Windows.Storage.ApplicationDataCompositeValue()”,因为这是在每次启动ViewModel时在BuildSettings中完成的。请尝试重置localSettings。SaveSettings()方法中的值[“Test”]键。我编辑了我的答案。我认为保存函数中不需要“new Windows.Storage.ApplicationDataCompositeValue()”,因为每次启动ViewModel时都会在BuildSettings中执行此操作。请尝试重置localSettings。SaveSettings()方法中的值[“Test”]键。我编辑了我的答案。