simple search database

hi everyone!
I'm using microsoft visual studio 2005 and SQL.
I have problem with my search page.(searchIncident.aspx)
I need to improvise it.Currently i am using this code



Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Panel1.Visible = False
        If (TextBox1.Text = "") Then
            Label1.Text = "Please enter text to start search."
        ElseIf (TextBox1.Text = "category") Then
            Panel1.Visible = True
            Label1.Text = ""
        ElseIf (TextBox1.Text = "o ...