访问.Net中的自定义配置节 [英] Accessing a Custom Configuration Section in .Net
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问题描述
我尝试访问我的配置文件中的设置,这是一系列列出的xml元素:
I am trying to access settings in my config file, which is a series of xml elements listed as such:
<databases>
<database name="DatabaseOne" Value="[value]" />
<database name="DatabaseTwo" Value="[value]" />
</databases>
现在我想要访问它。我已经设置类如此:
Now I want to access it. I have set up classes like so:
Public Class DatabaseConfigurationHandler
Inherits ConfigurationSection
<ConfigurationProperty("Databases", IsDefaultCollection:=True)> _
Public ReadOnly Property Databases() As DatabaseCollection
Get
Return CType(Me("Databases"), DatabaseCollection)
End Get
End Property
End Class
Public Class DatabaseCollection
Inherits ConfigurationElementCollection
Protected Overloads Overrides Function CreateNewElement() As ConfigurationElement
Return (New Database())
End Function
Protected Overloads Overrides Function GetElementKey(ByVal element As ConfigurationElement) As Object
Return (CType(element, Database).DatabaseName)
End Function
End Class
Public Class Database
Inherits ConfigurationElement
<ConfigurationProperty("name", IsKey:=True, IsRequired:=True)> _
Public Property DatabaseName() As String
Get
Return Me("name").ToString()
End Get
Set(ByVal Value As String)
Me("name") = Value
End Set
End Property
<ConfigurationProperty("value", IsRequired:=True)> _
Public Property DatabaseValue() As String
Get
Return Me("value").ToString()
End Get
Set(ByVal Value As String)
Me("value") = Value
End Set
End Property
End Class
我想能够通过它的名字获取元素,并返回值,但我不能看到这样做:
I want to be able get the element by it's name and return the value but I can't see to do that:
Dim config As New DatabaseConfigurationHandler
config = System.Configuration.ConfigurationManager.GetSection("databases/database")
Return config.Databases("DatabaseOne")
我缺少一些代码,我做错了什么?上述任何其他错误?
Am I missing some code, what am I doing wrong? Any other errors in the above?
感谢。
推荐答案
配置:
<ListConfigurations>
<lists>
<add Name="blah" EndpointConfigurationName="blah" ListName="blah" ConnectionString="blah" TableName="blah" FieldsCsv="blah" DbFieldsCsv="blah"/>
<add Name="blah2" EndpointConfigurationName="blah" ListName="blah" ConnectionString="blah" TableName="blah" FieldsCsv="blah" DbFieldsCsv="blah"/>
</lists>
</ListConfigurations>
配置部分C#:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Configuration;
namespace App
{
/// <summary>
/// Individual list configuration
/// </summary>
class ListConfiguration : ConfigurationElement
{
[ConfigurationProperty("Name", IsKey = true, IsRequired = true)]
public string Name
{
get { return (string)this["Name"]; }
}
[ConfigurationProperty("EndpointConfigurationName", IsRequired = true)]
public string EndpointConfigurationName
{
get { return (string)this["EndpointConfigurationName"]; }
}
[ConfigurationProperty("ListName", IsRequired = true)]
public string ListName
{
get { return (string)this["ListName"]; }
}
[ConfigurationProperty("ConnectionString", IsRequired = true)]
public string ConnectionString
{
get { return (string)this["ConnectionString"]; }
}
[ConfigurationProperty("TableName", IsRequired = true)]
public string TableName
{
get { return (string)this["TableName"]; }
}
[ConfigurationProperty("FieldsCsv", IsRequired = true)]
public string FieldsCsv
{
get { return (string)this["FieldsCsv"]; }
}
[ConfigurationProperty("DbFieldsCsv", IsRequired = true)]
public string DbFieldsCsv
{
get { return (string)this["DbFieldsCsv"]; }
}
}
/// <summary>
/// Collection of list configs
/// </summary>
class ListConfigurationCollection : ConfigurationElementCollection
{
protected override ConfigurationElement CreateNewElement()
{
return new ListConfiguration();
}
protected override object GetElementKey(ConfigurationElement element)
{
return ((ListConfiguration)element).Name;
}
}
/// <summary>
/// Config section
/// </summary>
class ListConfigurationSection : ConfigurationSection
{
[ConfigurationProperty("lists")]
public ListConfigurationCollection Lists
{
get { return (ListConfigurationCollection)this["lists"]; }
}
}
}
<它从主应用程序:
And the code to pick it up from the main app:
ListConfigurationSection configSection = null;
try
{
configSection = ConfigurationManager.GetSection("ListConfigurations") as ListConfigurationSection;
}
catch (System.Configuration.ConfigurationErrorsException)
{
}
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