全局变量定义在哪？

Question

....  
<appSettings>
    <add key="strConn" value="server=SUN-FREE;database=Realty;uid=sa;pwd=54321;Max Pool Size=20"/>
 </appSettings></configuration>然后在一个类中取出
string strConn    = System.Configuration.ConfigurationSettings.AppSettings["strConn"]; SqlConnection conn = new SqlConnection(strConn);

Answer 1

....  
<appSettings>
    <add key="strConn" value="server=SUN-FREE;database=Realty;uid=sa;pwd=54321;Max Pool Size=20"/>
 </appSettings></configuration>然后在一个类中取出
string strConn    = System.Configuration.ConfigurationSettings.AppSettings["strConn"]; SqlConnection conn = new SqlConnection(strConn);

Answer 2

出现无法 “无法识别的配置节“appSettings”错误

Answer 3

放在Global.asax.vb里面 ，如
    Sub Application_Start(ByVal sender As Object, ByVal e As EventArgs)
        ' 在应用程序启动时激发
        Application.Lock()
        Application("CNSTR") = "server=.;uid=sa;pwd=;database=MoneyCard;"
        Application.UnLock()
    End Sub

Answer 4

<configuration>
  <system.web>
    <customErrors mode="On" defaultRedirect="msg.aspx?type=error">
    </customErrors>
    <!--customErrors mode="Off"/-->
    <compilation defaultLanguage="c#" debug="false">
      <assemblies>
        <add assembly="CrystalDecisions.CrystalReports.Engine, Version=9.1.3300.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" />
        <add assembly="CrystalDecisions.ReportSource, Version=9.1.3300.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" />
        <add assembly="CrystalDecisions.Shared, Version=9.1.3300.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" />
        <add assembly="CrystalDecisions.Web, Version=9.1.3300.0, Culture=neutral, PublicKeyToken=692fbea5521e1304" />
      </assemblies>
    </compilation>
    <globalization requestEncoding="UTF-8" responseEncoding="UTF-8" />
    <!--pages buffer="true" enableSessionState="ReadOnly" enableViewState="false" enableViewStateMac="false" smartNavigation="false" -->
    <!--sessionState mode="InProc" timeout="10" -->
    <sessionState mode="InProc" stateConnectionString="tcpip=127.0.0.1:42424" sqlConnectionString="data source=127.0.0.1;user id=sa;password=" cookieless="false" timeout="60" />
  </system.web>
  <system.web>
    <authorization>
      <deny users="?" />
    </authorization>
  </system.web>
  <appSettings>
    <add key="ConnStr" value="server=localhost;uid=sa;password=sa;database=dbname"/>  </appSettings>
</configuration>

Answer 5

一个页面中的全局变量：页名.aspx.cs中的Pageload函数前面，定义控件的地方所有页:Global.asax.vb里面    或web.config里
(1)<configuration>
   <appSettings>
    <add key="strConn" value="server=;database=;uid=sa;pwd=;"/>
    </appSettings>
  </configuration>（2） Application_Start(Object sender ,EventArgs e )
        {
        Application.Lock()
        Application("CNSTR") = "server=.;uid=sa;pwd=;database=MoneyCard;"
        Application.UnLock()
        }