if i have 2 text boxes and 1 combobox and 1 search button

i want to see either(any textbox or a combobox) have some data before they hit search button

how do i accomplish that?

Start with the search button disabled.
In the Change event of each textbox chek whether the concatenated LEN() of the .Text of both boxes is > 0. If so, enable the button, if not disable it.
This way, even if there had been some text, if they delete it the button will be re-disabled.
Add to the test an Or of whether something is selected in the combo.

i try doing that but still my search button ignores

here is the code:

    Private Sub txtProductID_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtProductID.TextChanged
        If txtProductID.Text.Length > 0 Then
               btnSearch.CausesValidation = False
        End If
    End Sub

try If Len(txtProductId.Text) > 0 then ...whatever

Why are you manipulating the .CausesValidation property?
I was talking about changing the .Enabled property...