**Hi, I tried to insert into DB using textbox in a form using vb by visual studio 2010 but its always catch an error [Cannot open database "4" requested by the login. The login failed. Login failed for user 'sa'] i tried to get a solution for this error this the code i used**

Imports System.Data Imports System.Data.SqlClient

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim myconn As SqlConnection Dim cmd As SqlCommand Dim sqlString, Asd, Lays As String

    Asd = ATextBox.Text
    Lays = BTextBox.Text

    myconn = New SqlConnection("server=localhost;" & "Initial Catalog=4;" & "User Id=sa;" & "Password=123;")

    myconn.Open()

    sqlString = "INSERT INTO Table1 (A , B) VALUES ('" + Asd + "','" + Lays + "') "
    cmd = New SqlCommand(sqlString, myconn)
    cmd.ExecuteNonQuery()
    myconn.Close()
End Sub