Check Row when changing pages in GridView - asp.net

Question

When clicking the pager in a GridView, I want to highlight each row if the amount equals a certain amount. I have this working when the GridView is first populated, but each time I click the pager button to move to the next page with a valid amount, it will not highlight. Any suggestions?
GridView
<asp:GridView ID="ERNDataGrid" runat="server" CssClass="clsGridView" AutoGenerateColumns="false" AllowPaging="true" PageSize="15"
OnPageIndexChanging="OnPageIndexChanging" OnRowDataBound="OnRowDataBound" Width="99%">
<HeaderStyle HorizontalAlign="Center" BackColor="#464646" Font-Bold="True" ForeColor="White"></HeaderStyle>
<PagerSettings Mode="NextPreviousFirstLast" />
<PagerStyle HorizontalAlign="Right" ForeColor="White" BackColor="#464646" Font-Bold="False" Font-Italic="False" Font-Overline="False" Font-Strikeout="False" Font-Underline="False"></PagerStyle>
<AlternatingRowStyle BackColor="#DDDDDD"></AlternatingRowStyle>
<Columns>
<asp:BoundField DataField="CUID" HeaderText="Routing Number" ItemStyle-HorizontalAlign="Center" />
<asp:BoundField DataField="Account" HeaderText="Account" ItemStyle-HorizontalAlign="Center" />
<asp:BoundField DataField="Amount" HeaderText="Amount" DataFormatString="{0:C}" ItemStyle-HorizontalAlign="Center" />
<asp:BoundField DataField="Serial" HeaderText="Check Number" ItemStyle-HorizontalAlign="Center" />
</Columns>
</asp:GridView>
VB.net Codebehind
Protected Sub ResearchGridView_Click(sender As Object, e As EventArgs) Handles ResearchGridView.Click
strResearchAmount = txtERNResearchAmount.Value
BindData()
End Sub
Private Sub ERNResearch_Load(sender As Object, e As EventArgs) Handles Me.Load
If Not Page.IsPostBack Then
ERNDataGrid.DataBind()
End If
End Sub
Protected Sub BindData()
'Create a connection
Dim myConnection As New SqlConnection("This works")
'Create the command object, passing in the SQL string
Const strSQL As String = "SELECT CUID, Account, Amount / 100 as Amount, Serial FROM [ACCU].[dbo].[ERN_ITEM_VIEW] Where Date = '04/13/2017' And CUID <> '0'"
Dim myCommand As New SqlCommand(strSQL, myConnection)
'Create the DataAdapter
Dim myDA As New SqlDataAdapter()
myDA.SelectCommand = myCommand
'Populate the DataSet
Dim myDS As New DataSet()
myDA.Fill(myDS)
'Set the datagrid's datasource to the dataset and databind
ERNDataGrid.DataSource = myDS
ERNDataGrid.DataBind()
'Display Information on what page we are currently viewing
'lblMessage.Text = "Viewing Page " & ERNDataGrid.PageIndex + 1 & " of " & ERNDataGrid.PageCount
End Sub
Protected Sub OnPageIndexChanging(sender As Object, e As GridViewPageEventArgs)
ERNDataGrid.PageIndex = e.NewPageIndex
Me.BindData()
End Sub
Protected Sub OnRowDataBound(sender As Object, e As GridViewRowEventArgs)
If e.Row.RowIndex > -1 Then
If e.Row.Cells(2).Text = "$" & strResearchAmount Then
e.Row.BackColor = Color.Yellow
End If
End If
End Sub

Answer 1

Your code looks correct. The OnRowDataBound event is triggered every time DataBind() is called. And since that is the case in your OnPageIndexChanging the RowDataBound should fire.
However the strResearchAmount could be empty since it is filled only after a button click. Since a page index change also triggers a PostBack, it is likely that strResearchAmount is empty when OnRowDataBound is called for the second time.
Check the value of strResearchAmount and make sure it persists across PostBack.