C# ADO.NET DataAdapter
The DataAdapter plays a crucial role as part of the ADO.NET Data Provider in facilitating communication between the Dataset and the Data Source.
The DataAdapter acts as a bridge, providing a seamless connection between the Dataset and the Data Source. It enables the exchange of data by utilizing methods such as Fill() and Update().
Fill() method
The Fill() method of the DataAdapter maps the data from the Data Source to the corresponding tables within the Dataset. This ensures that the data in the Dataset matches the data retrieved from the Data Source. It essentially populates the Dataset with data from the Data Source.
On the other hand, the Update() method of the DataAdapter facilitates changes made to the data in the Dataset to be synchronized with the Data Source. It ensures that modifications made in the Dataset are accurately reflected in the Data Source.
The DataAdapter enables various SQL operations on the Data Source, including Select, Insert, Update, and Delete. These operations are performed using the SelectCommand, InsertCommand, UpdateCommand, and DeleteCommand properties of the DataAdapter.
SelectCommand property
The SelectCommand property is a Command Object that retrieves data from the Data Source based on the provided SQL statement or Stored Procedure. It serves as the foundation for fetching data. From the following links describes how to use SqlDataAdapter and OleDbDataAdapter in detail.
The InsertCommand, UpdateCommand, and DeleteCommand properties are also Command Objects, responsible for managing updates to the data in the Data Source. They ensure that any modifications made to the data in the Dataset are appropriately reflected in the Data Source through Insert, Update, and Delete operations.
Conclusion
The DataAdapter, as part of the ADO.NET Data Provider, establishes communication between the Dataset and the Data Source. It provides the Fill() method to retrieve data from the Data Source and populate the Dataset, and the Update() method to synchronize changes made in the Dataset with the Data Source. The DataAdapter can perform Select, Insert, Update, and Delete operations on the Data Source, utilizing the SelectCommand, InsertCommand, UpdateCommand, and DeleteCommand properties. This combination of the DataAdapter and the Dataset enables efficient data access and manipulation capabilities.
- C# ADO.NET Command
- C# ADO.NET SqlCommand - ExecuteNonQuery
- C# ADO.NET OleDbCommand - ExecuteNonQuery
- C# ADO.NET SqlCommand - ExecuteScalar
- C# ADO.NET OleDbCommand - ExecuteScalar
- C# ADO.NET SqlCommand - ExecuteReader
- C# ADO.NET OleDbCommand - ExecuteReader
- C# ADO.NET DataReader
- C# ADO.NET SqlDataReader
- C# ADO.NET OleDbDataReader
- C# Multiple Result Sets
- C# Table Schema from SqlDataReader
- C# Table Schema from OleDbDataReader
- C# ADO.NET SqlDataAdapter
- C# ADO.NET OleDbDataAdapter
- C# ExecuteReader and ExecuteNonQuery
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