企业库4数据配置标签 [英] Enterprise library 4 dataconfiguration tag

问题描述

我正在使用企业库进行数据访问. 当我运行应用程序时，在CreateDatabase()语句中，我遇到了以下异常:

I am using Enterprise library for my data access. When I am running the application, at the CreateDatabase() statement I am getting this exception:

Microsoft.Practices.ObjectBuilder2.BuildFailedException 用户代码未处理 Message =当前的构建操作 (构建密钥Build 密钥[Microsoft.Practices.EnterpriseLibrary.Data.Database， null])失败: 该值不能为null或空字符串. (策略类型为Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.ConfiguredObjectStrategy， 索引2)" Source ="Microsoft.Practices.ObjectBuilder2"

Microsoft.Practices.ObjectBuilder2.BuildFailedException was unhandled by user code Message="The current build operation (build key Build Key[Microsoft.Practices.EnterpriseLibrary.Data.Database, null]) failed: The value can not be null or an empty string. (Strategy type Microsoft.Practices.EnterpriseLibrary.Common.Configuration.ObjectBuilder.ConfiguredObjectStrategy, index 2)" Source="Microsoft.Practices.ObjectBuilder2"

现在，我在Google上搜索了一下，发现必须放置

Now, I googled a bit and I found that I have to place

<dataConfiguration defaultDatabase="LocalSqlServer"/>

但是我不知道在哪里.这是正确的解决方案吗?

but I don't know where. Is it the right solution?

此外，在安装企业库时，我没有看到任何连接字符串语句?因此，我想知道它将如何从web.config文件中获取连接字符串.

Also, at the time of installing enterprise library I didn't see any connection string statement? So, I wonder how it will take the connection string from web.config file.

在我的web.config文件的连接字符串部分中，我有:

In the connection string section of my web.config file I have:

<remove name="LocalSqlServer"/>
 <add name="LocalSqlServer" connectionString="Data Source=MSTR;Initial Catalog=USERDb;Integrated Security=true;" providerName="System.Data.SqlClient"/>

推荐答案

是的，您需要将dataConfiguration部分添加到web.config.

Yes you need to add the dataConfiguration section to the web.config.

首先，您需要将dataConfiguration添加到web.config中的ConfigurationSections列表中:

First you need to add dataConfiguration to the list of ConfigurationSections in your web.config:

<configSections>
    <section name="dataConfiguration" type="Microsoft.Practices.EnterpriseLibrary.Data.Configuration.DatabaseSettings, Microsoft.Practices.EnterpriseLibrary.Data, Version=4.1.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>
</configSections>

然后，您需要将连接字符串添加到web.config中(您已经完成了此操作):

Then you need to add your connection strings to the web.config (you've already done this):

<connectionStrings>
    <add name="LocalSqlServer" connectionString="Data Source=MSTR;Initial Catalog=USERDb;Integrated Security=true;" providerName="System.Data.SqlClient"/>      
</connectionStrings>

然后，您需要将实际的dataConfiguration部分添加到web.config中:

Then you need to add the actual dataConfiguration section to the web.config:

<dataConfiguration defaultDatabase="LocalSqlServer"/>

您还可以使用企业库配置工具为您执行此操作.

You can also use the Enterprise Library Configuration Tool to do this for you as well.

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