/// <summary>
/// 由数据库连接串名称创建连接对象
/// </summary>
/// <param name="connectionStringName">数据库连接串名称</param>
/// <returns></returns>
private static DbConnection CreateConnectionWrapper(string connectionStringName)
{
PublicHelper.CheckArgument(connectionStringName, "connectionStringName");
string providerInvariantName = "System.Data.SqlClient";
string connectionString = null;
ConnectionStringSettings connectionStringSetting = ConfigurationManager.ConnectionStrings[connectionStringName];
if (connectionStringSetting != null)
{
providerInvariantName = connectionStringSetting.ProviderName;
connectionString = connectionStringSetting.ConnectionString;
}
if (connectionString == null)
{
throw PublicHelper.ThrowComponentException("名称为“" + connectionStringName + "”数据库连接串的ConnectionString值为空。");
}
string wrappedConnectionString = "wrappedProvider=" + providerInvariantName + ";" + connectionString;
EFCachingConnection connection = new EFCachingConnection
{
ConnectionString = wrappedConnectionString,
CachingPolicy = CachingPolicy.CacheAll,
Cache = InMemoryCache
};
return(connection);
}
