ASP.NET

Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

Public Class GridItem
    Dim _brand As String
    Dim _cat As String

    Public Sub GridItem()
        'Constructor
        _brand = ""
        _cat = ""
    End Sub

    Public Property Brand() As String
        Get
            Return _brand
        End Get
        Set(ByVal value As String)
            _brand = value
        End Set
    End Property

    Public Property Category() As String
        Get
            Return _cat
        End Get
        Set(ByVal value As String)
            _cat = value
        End Set
    End Property


End Class

Sub ItemGrid_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs)

        If e.Row.RowType = DataControlRowType.DataRow Then
            Dim GI As New GridItem
            GI.Brand = e.Row.Cells(0).Text
            GI.Category = e.Row.Cells(1).Text
            If uniquearr.Contains(GI) Then
                e.Row.Cells(0).Text = ""
                e.Row.Cells(1).Text = ""
            Else
                uniquearr.Add(GI)
            End If
        End If
    End Sub