Private Sub cmdSearch_Click()
    Dim key As Integer, str As String
    key = InputBox("Enter the Employee No whose details u want to know:")
    Set rs = Nothing
    str ="select * from emp where e_no=" & key
    rs.Open str, adoconn, adOpenForwardOnly, adLockReadOnly
    txtNo.Text = rs(0)
    txtName.Text = rs(1)
    txtCity.Text = rs(2)
    txtDob.Text = rs(4)
    txtPhone.Text = rs(3)
    Set rs = Nothing
    str ="select * from emp"
    rs.Open str, adoconn, adOpenDynamic, adLockPessimistic
End Sub

Private Sub cmdSearch_Click()
    Dim key As Integer, str As String
    key = InputBox("Enter the Employee No whose details u want to know:") ''// query the user for a name
    Set rs = Nothing
    str ="select * from emp where e_no=" & key ''//create sql query on the fly
    rs.Open str, adoconn, adOpenForwardOnly, adLockReadOnly ''// create a connection to an sql database
    txtNo.Text = rs(0) ''//assign the results of the query to input fields or labels
    txtName.Text = rs(1)
    txtCity.Text = rs(2)
    txtDob.Text = rs(4)
    txtPhone.Text = rs(3)
    Set rs = Nothing
    str ="select * from emp"
    rs.Open str, adoconn, adOpenDynamic, adLockPessimistic ''// creates a new sql connection and load the whole emp table
End Sub