Effortlessly convert code from visual basic dot net to sql in just 3 easy steps. Streamline your development process now.
Imports System.Data.SqlClient
Dim connectionString As String = "Data Source=server_name;Initial Catalog=database_name;Integrated Security=True"
Dim connection As New SqlConnection(connectionString)
Step 3: Opening the Connection
Try
connection.Open()
' Connection successful
Catch ex As Exception
' Handle connection error
Finally
connection.Close()
End Try
Dim command As New SqlCommand("INSERT INTO TableName (Column1, Column2) VALUES (@Value1, @Value2)", connection)
command.Parameters.AddWithValue("@Value1", value1)
command.Parameters.AddWithValue("@Value2", value2)
connection.Open()
command.ExecuteNonQuery()
connection.Close()
Retrieving Data
Dim command As New SqlCommand("SELECT * FROM TableName", connection)
connection.Open()
Dim reader As SqlDataReader = command.ExecuteReader()
While reader.Read()
' Process data
End While
connection.Close()
SqlConnection
class with a valid connection string.
What is a connection string?
A connection string contains information to connect to a database, such as server name, database name, and authentication details.
Use parameterized queries to prevent SQL injection.
What is the difference between ExecuteNonQuery and ExecuteReader?ExecuteNonQuery
is used for commands that do not return data, while ExecuteReader
is used for commands that return data.
Use Try…Catch blocks to handle exceptions and ensure the connection is closed in the Finally block.
Connecting Visual Basic .NET to SQL is a fundamental skill for developers. By following the steps outlined in this guide, you can efficiently manage database operations in your VB.NET applications.
By following this guide, you can ensure your VB.NET applications are robust, secure, and efficient when interacting with SQL databases.