YZR.Data webconfig端的配置

这里记录一下,YZR.Data对系统兼容数据库在webconfig的配置处理.

<?xml version="1.0" encoding="utf-8"?>

<!--
有关如何配置 ASP.NET 应用程序的详细信息，请访问 http://go.microsoft.com/fwlink/?LinkId=169433 -->

<configuration>
<configSections>
<section name="YZRSetting" type="YZR.Config.YZRSetting, YZR.Config" />
</configSections>

<connectionStrings>
<add name="connString" connectionString="Data Source=127.0.0.1/orcl;Persist Security Info=True;User ID=YZR;Password=677714" providerName="YZROracle"/>
</connectionStrings>
<system.web>
<compilation debug="true" targetFramework="4.5" />
<httpRuntime targetFramework="4.5" />
</system.web>
<YZRSetting>
<base title="巴夫&巴夫" subTitle="YZR的博客" url="http://www.cnblogs.com/Francis_YZR"></base>
<strConn>
<!--<file name="headPhoto" path="upload/image/headPhoto" size="200"></file>
<file name="album" path="upload/image/album" size="1024"></file>-->
<conn Rname="Oracle" Rvalue="YZROracle"></conn>
<conn Rname="Sqlserver" Rvalue="YZRSqlserver"></conn>
</strConn>
</YZRSetting>
</configuration>

一开始的时候,我的做法是在appStart.cs中通过配置"RAtion"或者"RMtion"来决定采用Oracle,还是Sqlserver,但这样并不明智,因为需要改动项目代码,所以,我就想把决定数据库驱动的时机转移webconfig.通过providerName来指定数据库驱动.

如下:

<connectionStrings>
<add name="connString"
connectionString="Data Source=127.0.0.1/orcl;Persist Security Info=True;User ID=YZR;Password=677714"
providerName="YZROracle"/>
</connectionStrings>

然后,providerName提供出来之后,并未知道其有多少选择值,而且我希望也把它也配置起来,可以实现手动配置和任意添加删除,所以,我在wenconfig文件中加了自定义节点.

如下:

<YZRSetting>
<base title="巴夫&巴夫" subTitle="YZR的博客" url="http://www.cnblogs.com/Francis_YZR"></base>
<strConn>
<!--<file name="headPhoto" path="upload/image/headPhoto" size="200"></file>
<file name="album" path="upload/image/album" size="1024"></file>-->
<conn Rname="Oracle" Rvalue="YZROracle"></conn>
<conn Rname="Sqlserver" Rvalue="YZRSqlserver"></conn>
</strConn>
</YZRSetting>

这样的目的很明确,就是providerName的值是通过Rvalue决定的.

下面贴上YZRSetting.cs

namespace YZR.Config  //好好研究一下ConfigurationSection
{
using System.Configuration;
public class YZRSetting : ConfigurationSection
{
//base节点
[ConfigurationProperty("base")]
public baseSection BaseSetting { get { return (baseSection)base["base"]; } }

//fileUpload节点
[ConfigurationProperty("strConn")]
public strConnSection StrConnSetting { get { return (strConnSection)base["strConn"]; } }
}

public class baseSection : ConfigurationElement
{
//title属性
[ConfigurationProperty("title", IsKey = true, IsRequired = true)]
public string title { get { return (string)base["title"]; } set { title = value; } }
//subTitle属性
[ConfigurationProperty("subTitle", IsRequired = false, DefaultValue = "")]
public string subTitle { get { return (string)base["subTitle"]; } set { subTitle = value; } }
//url属性
[ConfigurationProperty("url", IsRequired = true)]
public string url { get { return (string)base["url"]; } set { url = value; } }
}

[ConfigurationCollection(typeof(connSection), AddItemName = "conn")]//子元素的声明conn
public class strConnSection : ConfigurationElementCollection
{
protected override ConfigurationElement CreateNewElement()
{
return new connSection();
}

protected override object GetElementKey(ConfigurationElement element)
{
return ((connSection)element).Rname;
}

public connSection this[int index]
{
get { return (connSection)base.BaseGet(index); }
}

new public connSection this[string name]
{
get { return (connSection)base.BaseGet(name); }
}
}

public class connSection : ConfigurationElement
{
//name属性
[ConfigurationProperty("Rname", IsKey = true, IsRequired = true)]
public string Rname { get { return (string)this["Rname"]; } set { Rname = value; } }
//value属性
[ConfigurationProperty("Rvalue", IsRequired = true)]
public string Rvalue { get { return (string)this["Rvalue"]; } set { Rvalue = value; } }
////path属性
//[ConfigurationProperty("path", IsRequired = true)]
//public string path { get { return (string)this["path"]; } set { path = value; } }
////size属性
//[ConfigurationProperty("size", IsRequired = true, DefaultValue = 1024)]
//public int size { get { return (int)this["size"]; } set { size = value; } }
}

public class WebSettingManager
{
public static YZRSetting WebSetting = (YZRSetting)System.Configuration.ConfigurationManager.GetSection("YZRSetting");
}
/*
*
*      WebSettingManager.WebSetting.BaseSetting.title + " - " + WebSettingManager.WebSetting.BaseSetting.subTitle;
WebSettingManager.WebSetting.BaseSetting.title;
WebSettingManager.WebSetting.BaseSetting.subTitle;
WebSettingManager.WebSetting.BaseSetting.url;

WebSettingManager.WebSetting.strConnSetting;//数组的形式
*/
}

在appStart.cs的处理如下:

string Title = WebSettingManager.WebSetting.BaseSetting.title + " - " + WebSettingManager.WebSetting.BaseSetting.subTitle;
int count = WebSettingManager.WebSetting.StrConnSetting.Count;
List<string> list = new List<string>();
for (int i = 0; i < count; i++)
{
connSection section=WebSettingManager.WebSetting.StrConnSetting[i];
list.Add(section.Rvalue);
}
//string strConn = System.Web.Configuration.WebConfigurationManager.ConnectionStrings["default"].ConnectionString;
//string connString = System.Configuration.ConfigurationManager.ConnectionStrings["connString"].ToString();
string ProviderName = System.Configuration.ConfigurationManager.ConnectionStrings["connString"].ProviderName;
string path = AppDomain.CurrentDomain.BaseDirectory;
Assembly ass = Assembly.LoadFrom(path + "bin\\YZR.Data.dll");
//Assembly ass = Assembly.Load("YZR.Entity");
//TODO:Oracle数据库使用RAtion,Sqlserver使用RMotion
Type type = null;
for (int i = 0; i < list.Count; i++)
{
if (list[i].Equals(ProviderName, StringComparison.OrdinalIgnoreCase))
{
type = ass.GetType("YZR.Data." + "RAction");
break;
}
if (list[i].Equals(ProviderName, StringComparison.OrdinalIgnoreCase))
{
type = ass.GetType("YZR.Data." + "RMotion");
break;
}
else
throw new Exception("配置节点出错");
}

END!