Typically, you would write a wrapper layer for each of these stored procedures and expose this to the UI and/or business layer.
Microsoft access code code#
This enables you to put them in a separate assembly from your UI and/or business logic code and hide them from these developers. If the stored procedure is found to have at least one output parameter, the ToDataTable and ToDataSet methods are not generated.īy default, all stored queries generated are set to be internal classes. In the Execute method, any output parameters are set as ref parameters in the method and are prepopulated with the return values from the stored procedure. Plus, the PrepareCommand method creates all of the OleDbParameter objects and prepopulates their settings and values. NET input/output parameters automatically. Each of these 4 methods has the query's parameters converted to. Each query has 4 methods: PrepareCommand, Execute, ToDataTable, and ToDataSet. They've also been enabled for serialization to xml just in case you want to implement solutions similar to XmlSerializer to Serialize Class to Xml and Bulk Load Data.Ĭreates an individual class for every stored query. NET CustomAttributes to allow auto-population from DataTable classes. All of the data classes have been setup with. Every class and class property is set to be public. The output of this is in the \DataClasses folder in Columns.cs. net data types) for every user created table. Reviews an entire Microsoft Access database and generates a class and class properties (with the appropriate.
Microsoft access code how to#
If nothing else, you got a free sample of how to save images to an Access database as well as how to retrieve them. You'll notice that the sample console application for access loads elvis.jpg (my son Caeden at Halloween) into the nwind.mdb file first and then retrieves it. I also had a problem converting the binary data in the standard northwind database that comes with Microsoft Access. If you run it against one with forms or macros in it, you are likely to get some extraneous stored procedure classes generated for these.
Microsoft access code generator#
The code generator works pretty well against a basic Microsoft Access database.
Thus, the translation of data types from DAO to OLEDB to. So, I went way back to DAO to collect these. The OLEDB provider does not return parameters for stored queries via the standard.
Namely around getting the proper parameters and data types for stored queries. The Microsoft Access code generation class has a couple of hacks in it. Thus, you should rarely ever have to type the words OleDbCommand, OleDbDataAdapter, or OleDbConnection again. NET class properties and methods to better enable you to implement an object oriented environment for your data access layer. So, what does the tool do? In a sense, I've tried to map the database to. The purpose of this excerise is not to demonstrate how to write a tool like this but simply to provide you with the source code to a fairly comprehensive tool that you can adjust to your liking.