如果 user.config 中有 Int32[] 属性，我在使用我的 CustomSettingsProvider 时会得到一个无效的转换异常
If there are Int32[] properties in user.config, I get an invalid cast exception when I use my CustomSettingsProvider
我遵循 this article 并创建了 CustomSettingsProvider 以摆脱 [=25] 路径中的“_url_somehash”部分=] 文件被存储。现在我的设置按照我的意愿存储在 \CompanyName\ProductName\Version\user.config 中。
我的 user.config 文件（在创建我的 CustomSettingsProvider 之前由我的应用程序编写）包含一个 Int32[] 属性，它由默认的 SettingsProvider 正确存储和加载。当我使用我的 CustomSettingsProvider 时，出现以下异常：
Exception InvalidCastException
Source = mscorlib
Message = Invalid cast from 'System.String' to 'System.Int32[]'.
TargetSite = System.Object DefaultToType(System.IConvertible, System.Type, System.IFormatProvider)
Stack =
System.Convert.DefaultToType(IConvertible value, Type targetType, IFormatProvider provider)
System.String.System.IConvertible.ToType(Type type, IFormatProvider provider)
System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
System.Convert.ChangeType(Object value, Type conversionType)
MyApp.Interface.CustomSettingsProvider.GetPropertyValues(SettingsContext context, SettingsPropertyCollection collection) in d:\Users\angelo\Documents\Visual Studio 2013\Projects\MyApp\MyApp\Interface\CustomSettingsProvider.cs:line 112
System.Configuration.SettingsBase.GetPropertiesFromProvider(SettingsProvider provider)
System.Configuration.SettingsBase.GetPropertyValueByName(String propertyName)
System.Configuration.SettingsBase.get_Item(String propertyName)
System.Configuration.ApplicationSettingsBase.GetPropertyValue(String propertyName)
System.Configuration.ApplicationSettingsBase.get_Item(String propertyName)
MyApp.Properties.Settings.get_UpgradeRequired() in d:\Users\angelo\Documents\Visual Studio 2013\Projects\MyApp\MyApp\Properties\Settings.Designer.cs:line 31
MyApp.Interface.Program.Run() in d:\Users\angelo\Documents\Visual Studio 2013\Projects\MyApp\MyApp\Interface\Program.cs:line 51
MyApp.Interface.Program.Main() in d:\Users\angelo\Documents\Visual Studio 2013\Projects\MyApp\MyApp\Interface\Program.cs:line 34
我该如何解决这个问题？以更一般的方式，我如何以与使用默认 SettingsProvider 相同的方式存储集合和 classes？
这是我的 CustomSettingsProvider 的完整代码 class:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Reflection;
using System.Xml.Linq;
using System.IO;
// ==>>>>
//
namespace MyApp.Interface
{
class CustomSettingsProvider : SettingsProvider
{
#region Helper struct
/// <summary>
/// Helper struct.
/// </summary>
internal struct SettingStruct
{
internal string name;
internal string serializeAs;
internal string value;
}
#endregion
#region Constants
const string NAME = "name";
const string SERIALIZE_AS = "serializeAs";
const string CONFIG = "configuration";
const string USER_SETTINGS = "userSettings";
const string SETTING = "setting";
#endregion
#region Fields
bool _loaded;
#endregion
#region Properties
/// <summary>
/// Override.
/// </summary>
public override string ApplicationName { get { return System.Reflection.Assembly.GetExecutingAssembly().ManifestModule.Name; } set { /*do nothing*/ } }
/// <summary>
/// The setting key this is returning must set before the settings are used.
/// e.g. <c>Properties.Settings.Default.SettingsKey = @"C:\temp\user.config";</c>
/// </summary>
private string UserConfigPath
{
get
{
System.Diagnostics.FileVersionInfo versionInfo;
string strUserConfigPath, strUserConfigFolder;
strUserConfigPath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData, Environment.SpecialFolderOption.Create);
versionInfo = System.Diagnostics.FileVersionInfo.GetVersionInfo(Assembly.GetEntryAssembly().Location);
strUserConfigPath = Path.Combine(strUserConfigPath, versionInfo.CompanyName, versionInfo.ProductName, versionInfo.ProductVersion, "user.config");
strUserConfigFolder = Path.GetDirectoryName(strUserConfigPath);
if(!Directory.Exists(strUserConfigFolder))
Directory.CreateDirectory(strUserConfigFolder);
return strUserConfigPath;
}
}
/// <summary>
/// In memory storage of the settings values
/// </summary>
private Dictionary<string, SettingStruct> SettingsDictionary { get; set; }
#endregion
#region Constructor
/// <summary>
/// Loads the file into memory.
/// </summary>
public CustomSettingsProvider()
{
SettingsDictionary = new Dictionary<string, SettingStruct>();
}
/// <summary>
/// Override.
/// </summary>
public override void Initialize(string name, System.Collections.Specialized.NameValueCollection config)
{
base.Initialize(ApplicationName, config);
}
#endregion
/// <summary>
/// Must override this, this is the bit that matches up the designer properties to the dictionary values
/// </summary>
/// <param name="context"></param>
/// <param name="collection"></param>
/// <returns></returns>
public override SettingsPropertyValueCollection GetPropertyValues(SettingsContext context, SettingsPropertyCollection collection)
{
//load the file
if(!_loaded)
{
_loaded = true;
LoadValuesFromFile();
}
//collection that will be returned.
SettingsPropertyValueCollection values = new SettingsPropertyValueCollection();
//iterate thought the properties we get from the designer, checking to see if the setting is in the dictionary
foreach(SettingsProperty setting in collection)
{
SettingsPropertyValue value = new SettingsPropertyValue(setting);
value.IsDirty = false;
//need the type of the value for the strong typing
var t = Type.GetType(setting.PropertyType.FullName);
if(SettingsDictionary.ContainsKey(setting.Name))
{
value.SerializedValue = SettingsDictionary[setting.Name].value;
value.PropertyValue = Convert.ChangeType(SettingsDictionary[setting.Name].value, t);
}
else //use defaults in the case where there are no settings yet
{
value.SerializedValue = setting.DefaultValue;
value.PropertyValue = Convert.ChangeType(setting.DefaultValue, t);
}
values.Add(value);
}
return values;
}
/// <summary>
/// Must override this, this is the bit that does the saving to file. Called when Settings.Save() is called
/// </summary>
/// <param name="context"></param>
/// <param name="collection"></param>
public override void SetPropertyValues(SettingsContext context, SettingsPropertyValueCollection collection)
{
//grab the values from the collection parameter and update the values in our dictionary.
foreach(SettingsPropertyValue value in collection)
{
var setting = new SettingStruct()
{
value = (value.PropertyValue == null ? String.Empty : value.PropertyValue.ToString()),
name = value.Name,
serializeAs = value.Property.SerializeAs.ToString()
};
if(!SettingsDictionary.ContainsKey(value.Name))
SettingsDictionary.Add(value.Name, setting);
else
SettingsDictionary[value.Name] = setting;
}
//now that our local dictionary is up-to-date, save it to disk.
SaveValuesToFile();
}
/// <summary>
/// Loads the values of the file into memory.
/// </summary>
private void LoadValuesFromFile()
{
string strUserConfigPath;
strUserConfigPath = UserConfigPath;
//if the config file is not where it's supposed to be create a new one.
if(!File.Exists(strUserConfigPath))
CreateEmptyConfig(strUserConfigPath);
//System.Security.Policy.StrongName strongName = new System.Security.Policy.StrongName(
//ClickOnce
//load the xml
var configXml = XDocument.Load(UserConfigPath);
//get all of the <setting name="..." serializeAs="..."> elements.
var settingElements = configXml.Element(CONFIG).Element(USER_SETTINGS).Element(typeof(Properties.Settings).FullName).Elements(SETTING);
//iterate through, adding them to the dictionary, (checking for nulls, xml no likey nulls)
//using "String" as default serializeAs...just in case, no real good reason.
foreach(var element in settingElements)
{
var newSetting = new SettingStruct()
{
name = element.Attribute(NAME) == null ? String.Empty : element.Attribute(NAME).Value,
serializeAs = element.Attribute(SERIALIZE_AS) == null ? "String" : element.Attribute(SERIALIZE_AS).Value,
value = element.Value ?? String.Empty
};
SettingsDictionary.Add(element.Attribute(NAME).Value, newSetting);
}
}
/// <summary>
/// Creates an empty user.config file...looks like the one MS creates.
/// This could be overkill a simple key/value pairing would probably do.
/// </summary>
private void CreateEmptyConfig(string strUserConfigPath)
{
Configuration config1;
config1 = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.PerUserRoamingAndLocal);
if(File.Exists(config1.FilePath))
{
File.Copy(config1.FilePath, strUserConfigPath);
}
else
{
string s = Properties.Settings.Default.LastLoadedImage;
var doc = new XDocument();
var declaration = new XDeclaration("1.0", "utf-8", "true");
var config = new XElement(CONFIG);
var userSettings = new XElement(USER_SETTINGS);
var group = new XElement(typeof(Properties.Settings).FullName);
userSettings.Add(group);
config.Add(userSettings);
doc.Add(config);
doc.Declaration = declaration;
doc.Save(strUserConfigPath);
}
}
/// <summary>
/// Saves the in memory dictionary to the user config file
/// </summary>
private void SaveValuesToFile()
{
//load the current xml from the file.
var import = XDocument.Load(UserConfigPath);
//get the settings group (e.g. <Company.Project.Desktop.Settings>)
var settingsSection = import.Element(CONFIG).Element(USER_SETTINGS).Element(typeof(Properties.Settings).FullName);
//iterate though the dictionary, either updating the value or adding the new setting.
foreach(var entry in SettingsDictionary)
{
var setting = settingsSection.Elements().FirstOrDefault(e => e.Attribute(NAME).Value == entry.Key);
if(setting == null) //this can happen if a new setting is added via the .settings designer.
{
var newSetting = new XElement(SETTING);
newSetting.Add(new XAttribute(NAME, entry.Value.name));
newSetting.Add(new XAttribute(SERIALIZE_AS, entry.Value.serializeAs));
newSetting.Value = (entry.Value.value ?? String.Empty);
settingsSection.Add(newSetting);
}
else //update the value if it exists.
{
setting.Value = (entry.Value.value ?? String.Empty);
}
}
import.Save(UserConfigPath);
}
#region Angelo
private object GetDefaultValue(SettingsProperty setting)
{
if (setting.PropertyType.IsEnum)
return Enum.Parse(setting.PropertyType, setting.DefaultValue.ToString());
// Return the default value if it is set
// Return the default value if it is set
if (setting.DefaultValue != null)
{
System.ComponentModel.TypeConverter tc = System.ComponentModel.TypeDescriptor.GetConverter(setting.PropertyType);
return tc.ConvertFromString(setting.DefaultValue.ToString());
}
else // If there is no default value return the default object
{
return Activator.CreateInstance(setting.PropertyType);
}
}
#endregion
}
}
要读取序列化为 XML 的属性，您首先需要反序列化它们。
可能最简单的方法是添加一个名为 getPropertyValue 的新方法，它决定是直接 return 字符串值还是先反序列化它。然后，在下面显示的代码中，您可以调用此方法而不是使用 Convert.ChangeType 来设置 属性 值：
var t = Type.GetType(setting.PropertyType.FullName);
if (SettingsDictionary.ContainsKey(setting.Name))
{
value.SerializedValue = SettingsDictionary[setting.Name].value;
// value.PropertyValue = Convert.ChangeType(SettingsDictionary[setting.Name].value, t);
value.PropertyValue = getPropertyValue(SettingsDictionary[setting.Name].value, t, setting.SerializeAs);
}
else //use defaults in the case where there are no settings yet
{
value.SerializedValue = setting.DefaultValue;
// value.PropertyValue = Convert.ChangeType(setting.DefaultValue, t);
value.PropertyValue = getPropertyValue((string)setting.DefaultValue, t, setting.SerializeAs);
}
您的新方法 getPropertyValue 可能如何工作的示例：
private object getPropertyValue(string settingValue, Type settingType, SettingsSerializeAs serializeAs)
{
switch (serializeAs)
{
case SettingsSerializeAs.String:
return settingValue;
case SettingsSerializeAs.Xml:
//for demo purposes, assumes this is your int array--otherwise do further checking to get the correct type
XmlSerializer serializer = new XmlSerializer(typeof(int[]));
return serializer.Deserialize(new StringReader(settingValue));
//implement further types as required
default:
throw new NotImplementedException(string.Format("Settings deserialization as {0} is not implemented", serializeAs));
}
}
这将解决无效转换错误并将您的整数数组加载到设置中。
保存设置时需要进行相应的处理。如果你遇到了并发症，我建议你 post 一个新问题，因为问题有些不同。
我遵循 this article 并创建了 CustomSettingsProvider 以摆脱 [=25] 路径中的“_url_somehash”部分=] 文件被存储。现在我的设置按照我的意愿存储在
我的 user.config 文件（在创建我的 CustomSettingsProvider 之前由我的应用程序编写）包含一个 Int32[] 属性，它由默认的 SettingsProvider 正确存储和加载。当我使用我的 CustomSettingsProvider 时，出现以下异常：
Exception InvalidCastException
Source = mscorlib
Message = Invalid cast from 'System.String' to 'System.Int32[]'.
TargetSite = System.Object DefaultToType(System.IConvertible, System.Type, System.IFormatProvider)
Stack =
System.Convert.DefaultToType(IConvertible value, Type targetType, IFormatProvider provider)
System.String.System.IConvertible.ToType(Type type, IFormatProvider provider)
System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
System.Convert.ChangeType(Object value, Type conversionType)
MyApp.Interface.CustomSettingsProvider.GetPropertyValues(SettingsContext context, SettingsPropertyCollection collection) in d:\Users\angelo\Documents\Visual Studio 2013\Projects\MyApp\MyApp\Interface\CustomSettingsProvider.cs:line 112
System.Configuration.SettingsBase.GetPropertiesFromProvider(SettingsProvider provider)
System.Configuration.SettingsBase.GetPropertyValueByName(String propertyName)
System.Configuration.SettingsBase.get_Item(String propertyName)
System.Configuration.ApplicationSettingsBase.GetPropertyValue(String propertyName)
System.Configuration.ApplicationSettingsBase.get_Item(String propertyName)
MyApp.Properties.Settings.get_UpgradeRequired() in d:\Users\angelo\Documents\Visual Studio 2013\Projects\MyApp\MyApp\Properties\Settings.Designer.cs:line 31
MyApp.Interface.Program.Run() in d:\Users\angelo\Documents\Visual Studio 2013\Projects\MyApp\MyApp\Interface\Program.cs:line 51
MyApp.Interface.Program.Main() in d:\Users\angelo\Documents\Visual Studio 2013\Projects\MyApp\MyApp\Interface\Program.cs:line 34
我该如何解决这个问题？以更一般的方式，我如何以与使用默认 SettingsProvider 相同的方式存储集合和 classes？
这是我的 CustomSettingsProvider 的完整代码 class:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
using System.Reflection;
using System.Xml.Linq;
using System.IO;
// ==>>>>
//
namespace MyApp.Interface
{
class CustomSettingsProvider : SettingsProvider
{
#region Helper struct
/// <summary>
/// Helper struct.
/// </summary>
internal struct SettingStruct
{
internal string name;
internal string serializeAs;
internal string value;
}
#endregion
#region Constants
const string NAME = "name";
const string SERIALIZE_AS = "serializeAs";
const string CONFIG = "configuration";
const string USER_SETTINGS = "userSettings";
const string SETTING = "setting";
#endregion
#region Fields
bool _loaded;
#endregion
#region Properties
/// <summary>
/// Override.
/// </summary>
public override string ApplicationName { get { return System.Reflection.Assembly.GetExecutingAssembly().ManifestModule.Name; } set { /*do nothing*/ } }
/// <summary>
/// The setting key this is returning must set before the settings are used.
/// e.g. <c>Properties.Settings.Default.SettingsKey = @"C:\temp\user.config";</c>
/// </summary>
private string UserConfigPath
{
get
{
System.Diagnostics.FileVersionInfo versionInfo;
string strUserConfigPath, strUserConfigFolder;
strUserConfigPath = Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData, Environment.SpecialFolderOption.Create);
versionInfo = System.Diagnostics.FileVersionInfo.GetVersionInfo(Assembly.GetEntryAssembly().Location);
strUserConfigPath = Path.Combine(strUserConfigPath, versionInfo.CompanyName, versionInfo.ProductName, versionInfo.ProductVersion, "user.config");
strUserConfigFolder = Path.GetDirectoryName(strUserConfigPath);
if(!Directory.Exists(strUserConfigFolder))
Directory.CreateDirectory(strUserConfigFolder);
return strUserConfigPath;
}
}
/// <summary>
/// In memory storage of the settings values
/// </summary>
private Dictionary<string, SettingStruct> SettingsDictionary { get; set; }
#endregion
#region Constructor
/// <summary>
/// Loads the file into memory.
/// </summary>
public CustomSettingsProvider()
{
SettingsDictionary = new Dictionary<string, SettingStruct>();
}
/// <summary>
/// Override.
/// </summary>
public override void Initialize(string name, System.Collections.Specialized.NameValueCollection config)
{
base.Initialize(ApplicationName, config);
}
#endregion
/// <summary>
/// Must override this, this is the bit that matches up the designer properties to the dictionary values
/// </summary>
/// <param name="context"></param>
/// <param name="collection"></param>
/// <returns></returns>
public override SettingsPropertyValueCollection GetPropertyValues(SettingsContext context, SettingsPropertyCollection collection)
{
//load the file
if(!_loaded)
{
_loaded = true;
LoadValuesFromFile();
}
//collection that will be returned.
SettingsPropertyValueCollection values = new SettingsPropertyValueCollection();
//iterate thought the properties we get from the designer, checking to see if the setting is in the dictionary
foreach(SettingsProperty setting in collection)
{
SettingsPropertyValue value = new SettingsPropertyValue(setting);
value.IsDirty = false;
//need the type of the value for the strong typing
var t = Type.GetType(setting.PropertyType.FullName);
if(SettingsDictionary.ContainsKey(setting.Name))
{
value.SerializedValue = SettingsDictionary[setting.Name].value;
value.PropertyValue = Convert.ChangeType(SettingsDictionary[setting.Name].value, t);
}
else //use defaults in the case where there are no settings yet
{
value.SerializedValue = setting.DefaultValue;
value.PropertyValue = Convert.ChangeType(setting.DefaultValue, t);
}
values.Add(value);
}
return values;
}
/// <summary>
/// Must override this, this is the bit that does the saving to file. Called when Settings.Save() is called
/// </summary>
/// <param name="context"></param>
/// <param name="collection"></param>
public override void SetPropertyValues(SettingsContext context, SettingsPropertyValueCollection collection)
{
//grab the values from the collection parameter and update the values in our dictionary.
foreach(SettingsPropertyValue value in collection)
{
var setting = new SettingStruct()
{
value = (value.PropertyValue == null ? String.Empty : value.PropertyValue.ToString()),
name = value.Name,
serializeAs = value.Property.SerializeAs.ToString()
};
if(!SettingsDictionary.ContainsKey(value.Name))
SettingsDictionary.Add(value.Name, setting);
else
SettingsDictionary[value.Name] = setting;
}
//now that our local dictionary is up-to-date, save it to disk.
SaveValuesToFile();
}
/// <summary>
/// Loads the values of the file into memory.
/// </summary>
private void LoadValuesFromFile()
{
string strUserConfigPath;
strUserConfigPath = UserConfigPath;
//if the config file is not where it's supposed to be create a new one.
if(!File.Exists(strUserConfigPath))
CreateEmptyConfig(strUserConfigPath);
//System.Security.Policy.StrongName strongName = new System.Security.Policy.StrongName(
//ClickOnce
//load the xml
var configXml = XDocument.Load(UserConfigPath);
//get all of the <setting name="..." serializeAs="..."> elements.
var settingElements = configXml.Element(CONFIG).Element(USER_SETTINGS).Element(typeof(Properties.Settings).FullName).Elements(SETTING);
//iterate through, adding them to the dictionary, (checking for nulls, xml no likey nulls)
//using "String" as default serializeAs...just in case, no real good reason.
foreach(var element in settingElements)
{
var newSetting = new SettingStruct()
{
name = element.Attribute(NAME) == null ? String.Empty : element.Attribute(NAME).Value,
serializeAs = element.Attribute(SERIALIZE_AS) == null ? "String" : element.Attribute(SERIALIZE_AS).Value,
value = element.Value ?? String.Empty
};
SettingsDictionary.Add(element.Attribute(NAME).Value, newSetting);
}
}
/// <summary>
/// Creates an empty user.config file...looks like the one MS creates.
/// This could be overkill a simple key/value pairing would probably do.
/// </summary>
private void CreateEmptyConfig(string strUserConfigPath)
{
Configuration config1;
config1 = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.PerUserRoamingAndLocal);
if(File.Exists(config1.FilePath))
{
File.Copy(config1.FilePath, strUserConfigPath);
}
else
{
string s = Properties.Settings.Default.LastLoadedImage;
var doc = new XDocument();
var declaration = new XDeclaration("1.0", "utf-8", "true");
var config = new XElement(CONFIG);
var userSettings = new XElement(USER_SETTINGS);
var group = new XElement(typeof(Properties.Settings).FullName);
userSettings.Add(group);
config.Add(userSettings);
doc.Add(config);
doc.Declaration = declaration;
doc.Save(strUserConfigPath);
}
}
/// <summary>
/// Saves the in memory dictionary to the user config file
/// </summary>
private void SaveValuesToFile()
{
//load the current xml from the file.
var import = XDocument.Load(UserConfigPath);
//get the settings group (e.g. <Company.Project.Desktop.Settings>)
var settingsSection = import.Element(CONFIG).Element(USER_SETTINGS).Element(typeof(Properties.Settings).FullName);
//iterate though the dictionary, either updating the value or adding the new setting.
foreach(var entry in SettingsDictionary)
{
var setting = settingsSection.Elements().FirstOrDefault(e => e.Attribute(NAME).Value == entry.Key);
if(setting == null) //this can happen if a new setting is added via the .settings designer.
{
var newSetting = new XElement(SETTING);
newSetting.Add(new XAttribute(NAME, entry.Value.name));
newSetting.Add(new XAttribute(SERIALIZE_AS, entry.Value.serializeAs));
newSetting.Value = (entry.Value.value ?? String.Empty);
settingsSection.Add(newSetting);
}
else //update the value if it exists.
{
setting.Value = (entry.Value.value ?? String.Empty);
}
}
import.Save(UserConfigPath);
}
#region Angelo
private object GetDefaultValue(SettingsProperty setting)
{
if (setting.PropertyType.IsEnum)
return Enum.Parse(setting.PropertyType, setting.DefaultValue.ToString());
// Return the default value if it is set
// Return the default value if it is set
if (setting.DefaultValue != null)
{
System.ComponentModel.TypeConverter tc = System.ComponentModel.TypeDescriptor.GetConverter(setting.PropertyType);
return tc.ConvertFromString(setting.DefaultValue.ToString());
}
else // If there is no default value return the default object
{
return Activator.CreateInstance(setting.PropertyType);
}
}
#endregion
}
}
要读取序列化为 XML 的属性，您首先需要反序列化它们。
可能最简单的方法是添加一个名为 getPropertyValue 的新方法，它决定是直接 return 字符串值还是先反序列化它。然后，在下面显示的代码中，您可以调用此方法而不是使用 Convert.ChangeType 来设置 属性 值：
var t = Type.GetType(setting.PropertyType.FullName);
if (SettingsDictionary.ContainsKey(setting.Name))
{
value.SerializedValue = SettingsDictionary[setting.Name].value;
// value.PropertyValue = Convert.ChangeType(SettingsDictionary[setting.Name].value, t);
value.PropertyValue = getPropertyValue(SettingsDictionary[setting.Name].value, t, setting.SerializeAs);
}
else //use defaults in the case where there are no settings yet
{
value.SerializedValue = setting.DefaultValue;
// value.PropertyValue = Convert.ChangeType(setting.DefaultValue, t);
value.PropertyValue = getPropertyValue((string)setting.DefaultValue, t, setting.SerializeAs);
}
您的新方法 getPropertyValue 可能如何工作的示例：
private object getPropertyValue(string settingValue, Type settingType, SettingsSerializeAs serializeAs)
{
switch (serializeAs)
{
case SettingsSerializeAs.String:
return settingValue;
case SettingsSerializeAs.Xml:
//for demo purposes, assumes this is your int array--otherwise do further checking to get the correct type
XmlSerializer serializer = new XmlSerializer(typeof(int[]));
return serializer.Deserialize(new StringReader(settingValue));
//implement further types as required
default:
throw new NotImplementedException(string.Format("Settings deserialization as {0} is not implemented", serializeAs));
}
}
这将解决无效转换错误并将您的整数数组加载到设置中。
保存设置时需要进行相应的处理。如果你遇到了并发症，我建议你 post 一个新问题，因为问题有些不同。