最近剛好看到這樣的寫法,把它記錄一下
connectionStrings：
一般web.config的connectionStrings會這樣設定
web.config
<connectionStrings>
<add name="MSSQL" connectionString="MSSQL" />
<add name="Oralce" connectionString="Oracle" />
</connectionStrings>
也可以將connectionStrings移到另一個config檔來維護
web.config
<connectionStrings configSource="connections.config" />
connections.config
<?xml version="1.0" encoding="utf-8"?>
<connectionStrings>
<add name="MSSQL" connectionString="MSSQL" />
<add name="Oralce" connectionString="Oracle" />
</connectionStrings>
appSettings：
appSettings也可以使用configSource將設定值移到另一個config檔來維護
web.config
<appSettings configSource="settings.config" />
settings.config
<?xml version="1.0" encoding="utf-8"?>
<appSettings>
<add key="Blog" value="F6 Team" />
<add key="Name" value="puma" />
<add key="skill" value="ASP.NET" />
</appSettings>
也可以使用file來增加外部config檔的設定值
web.config
<appSettings file="settings.config">
<add key="Blog" value="F6 Team" />
<add key="Name" value="puma" />
</appSettings>
settings.config
<?xml version="1.0" encoding="utf-8"?>
<appSettings>
<add key="skill" value="ASP.NET" />
</appSettings>
file與configSource的差別就是：
1.file:可以延伸外部檔案的setting
2.configSource:指定一個xxx.config(但web.cofing就不能設定了,不然會出錯)
以上每一種方式的執行結果都一樣,如下圖所示：
code：
using System;
using System.Web.Configuration;
using System.Configuration;
public partial class webconfig : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
foreach (string set in WebConfigurationManager.AppSettings)
{
Response.Write(string.Format("key：{0}，value：{1}<br/>", set, WebConfigurationManager.AppSettings.Get(set)));
}
foreach (ConnectionStringSettings conn in WebConfigurationManager.ConnectionStrings)
{
Response.Write(string.Format("name：{0}，connectionString：{1}<br/>", conn.Name, conn.ConnectionString));
}
}
}推到 Twitter!
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