/// <summary>
/// 构造函数
/// </summary>
/// <param name="dbContext"></param>
/// <param name="tableName"></param>
public SqlQueryDAL(string dbContext, string tableName)
{
db = DBContextFactory.GetDBContext(dbContext);
TableName = tableName;
}
/// <summary>
/// 构造函数， 用于创建EF上下文对象
/// </summary>
/// <param name="context">指定创建哪个上下文对象</param>
public BaseDAL(string context)
{
db = DBContextFactory.GetDBContext(context);
}