如何创建和初始化一个DbContext
可以在*.config文件中配置connection string，将connection string name或者将整个connection string 作为参数传递给DbContext来创建DbContext。
重要配置
IgnoreIfAutoMapFails – IDbContext.IgnoreIfAutoMapFails返回一个IDbContext，该实例中，如果自动映射失败时是否抛出异常
通过*.config中配置的ConnectionStringName创建一个DbContext
1: public IDbContext Context()
2: {
3: return new DbContext().ConnectionStringName("MyDatabase",
4: new SqlServerProvider());
5: }
调用DbContext的ConnectionString方法显示设置connection string来创建
1: public IDbContext Context()
2: {
3: return new DbContext().ConnectionString(
4: "Server=MyServerAddress;Database=MyDatabase;Trusted_Connection=True;", new SqlServerProvider());
5: }
其他可以使用的Provider
只有通过使用不同的Provider，就可以切换到不同类型的数据库服务器上，比如
AccessProvider, DB2Provider, OracleProvider, MySqlProvider, PostgreSqlProvider, SqliteProvider, SqlServerCompact, SqlAzureProvider, SqlServerProvider.
Create and initialize a DbContext
The connection string on the DbContext class can be initialized either by giving the connection string name in the *.config file or by sending in the entire connection string.
Important configurations
IgnoreIfAutoMapFails - Calling this prevents automapper from throwing an exception if a column cannot be mapped to a corresponding property due to a name mismatch.
Create and initialize a DbContext
The DbContext can be initialized by either calling ConnectionStringName which will read the connection string from the *.config file:
public IDbContext Context()
{
return new DbContext().ConnectionStringName("MyDatabase",
new SqlServerProvider());
}
or by calling the ConnectionString method to set the connection string explicitly:
public IDbContext Context()
{
return new DbContext().ConnectionString(
"Server=MyServerAddress;Database=MyDatabase;Trusted_Connection=True;", new SqlServerProvider());
}
Providers
If you want to work against another database than SqlServer then simply replace the new SqlServerProvider() in the sample code above with any of the following:
AccessProvider, DB2Provider, OracleProvider, MySqlProvider, PostgreSqlProvider, SqliteProvider, SqlServerCompact, SqlAzureProvider, SqlServerProvider.