Is there a faster way to loop through large amounts of Rows in a DataGridView?

[Christhemist]

I am looping though about 100,000 records and checking a DataGridViewCheckBox Column, but it is taking way too long. Is there a faster way of doing this? Here is how I am currently doing it:

For Each R0w As DataGridViewRow In DataGridView1.Rows
            Dim TST As String = DataGridView1.Item(3, R0w.Index).Value.ToString
            If TST = "loc_132" Then
                DataGridView1.CurrentRow.DefaultCellStyle.ForeColor = Color.Red
                DataGridView1(0, R0w.Index).Value = True
            End If
        Next