VS 2019 ADO.NET Can't Open Database File

Option Explicit On
Option Strict On
Imports System.Data.SqlClient
 
Public Class Form1
    Private myConn As SqlConnection
    Private myCmd As SqlCommand
    Private myReader As SqlDataReader
    Private results As String
 
    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        myConn = New SqlConnection("Data Source = Database1")
 
        'Open the connection.
        myConn.Open()
    End Sub
 
    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        'Create a Command object.
        myCmd = myConn.CreateCommand
        myCmd.CommandText = "SELECT * FROM Table1 WHERE ID = " & TextBox1.Text
        myReader = myCmd.ExecuteReader()
        results = results & myReader.GetString(0) & vbTab & myReader.GetString(1)
        Label1.Text = results
    End Sub
End Class