#VISUAL BASIC DATA SET HOW TO#

Next, you might want to specify how to populate the dataset with data. This tab appears when the DataSet Designer is in focus. You can add new tables or table adapters to the dataset, or add new queries for existing table adapters, or specify new relations between tables by dragging those items from the Toolbox tab. Just remember that you are modifying the dataset, not the source database. For more information, see Relationships in datasets and Hierarchical update.Ĭlick a table, table adapter, or column name in a table to see its properties in the Properties window. However, you can click the lines to bring up the Relation dialog, where you can change the behavior of hierarchical updates.

#VISUAL BASIC DATA SET UPDATE#

By default, foreign-key constraints in a database are represented as a relation only, with the update and delete rules set to none. The relation lines that connect the tables represent table relationships, as defined in the database. The table adapter is used to populate the dataset and optionally to send commands to the database. Each table in the dataset has an associated TableAdapter object, which is represented at the bottom. The dataset appears as a node in Solution Explorer.Ĭlick the dataset node in Solution Explorer to open the dataset in the DataSet Designer. Open your project in Visual Studio, and then choose Project > Add New Data Source to start the Data Source Configuration Wizard.Ĭhoose the type of data source to which you'll be connecting.Ĭhoose the database or databases that will be the data source for your dataset.Ĭhoose the tables (or individual columns), stored procedures, functions, and views from the database that you want to be represented in the dataset.

Create a new dataset by using the Data Source Configuration Wizard For information on creating datasets programmatically, see Creating a dataset (ADO.NET). You can create a typed DataSet class in Visual Studio at design time by using the Data Source Configuration Wizard. To work with datasets, you should have a basic knowledge of database concepts. For new applications, consider using Entity Framework to store and model data in memory. Datasets were designed for simple forms over data business applications.

#VISUAL BASIC DATA SET FOR MAC#

Applies to: Visual Studio Visual Studio for Mac Visual Studio CodeĪ dataset is a set of objects that store data from a database in memory and support change tracking to enable create, read, update, and delete (CRUD) operations on that data without the need to be always connected to the database.

Visual basic data set