Trying to search a gridview?

Hi All,

I have a gridview on my page. I would like to be able to search this using a textbox. And possibly return the results in the gridview aswel.

My cloumns in Gridview are User and SerialNumber.

I have code behind a button as follows:
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
AccessDataSource1.SelectCommand = "select * from myTable where User like '%" & txtSearch.Text &am ...