Vb.net Code To Retrieve Data From Sql Server -

Return dataTable End Function

Return employees End Function This approach loads all data into memory and works well for data binding. vb.net code to retrieve data from sql server

Public Function GetEmployeeCount() As Integer Dim count As Integer = 0 Dim connectionString As String = "Server=localhost;Database=YourDatabase;Integrated Security=True;" Using connection As New SqlConnection(connectionString) Dim query As String = "SELECT COUNT(*) FROM Employees" Dim command As New SqlCommand(query, connection) Try connection.Open() count = Convert.ToInt32(command.ExecuteScalar()) Catch ex As SqlException MessageBox.Show("Error: " & ex.Message) End Try End Using Return dataTable End Function Return employees End Function

Imports System.Data.SqlClient Public Async Function GetEmployeesAsync() As Task(Of List(Of Employee)) Dim employees As New List(Of Employee)() Dim connectionString As String = "Server=localhost;Database=YourDatabase;Integrated Security=True;" vb.net code to retrieve data from sql server

Public Function GetEmployeesByDepartment(deptName As String) As DataTable Dim dataTable As New DataTable() Dim connectionString As String = "Server=localhost;Database=YourDatabase;Integrated Security=True;" Using connection As New SqlConnection(connectionString) Dim query As String = "SELECT EmployeeID, FirstName, LastName, Salary FROM Employees WHERE Department = @Department" Dim command As New SqlCommand(query, connection) ' Add parameter to prevent SQL injection command.Parameters.AddWithValue("@Department", deptName) Dim adapter As New SqlDataAdapter(command) Try adapter.Fill(dataTable) Catch ex As SqlException MessageBox.Show("Error: " & ex.Message) End Try End Using