hola, disculpa por lo del post anterior...
es que quiero sumar las colomnas impares y las filas impares, ya me suma las filas pero no e podido sumar las columnas, este es el codigo que tengo

Public Class ssuma

 

   
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

        Dim i, j As Integer
        Dim tabla(5, 5) As String

        With DataGridView1

            .Columns.Add("", "")
            .Columns.Add("", "")
            .Columns.Add("", "")
            .Columns.Add("", "")
            .Columns.Add("", "")

            .RowCount = 5

            For i = 0 To 4

                For j = 0 To 4

                    tabla(i, j) = InputBox("Digite un número")
                    .Item(i, j).Value = tabla(i, j)

                Next

            Next



        End With

   

        Dim fila1 As Integer = 0
        Dim fila3 As Integer = 2
        Dim fila5 As Integer = 4

        Dim sumFila1 As Integer = (From cell As DataGridViewCell In DataGridView1.Rows.Item(fila1).Cells Select CInt(cell.Value)).Sum

        Dim sumFila3 As Integer = (From cell As DataGridViewCell In DataGridView1.Rows.Item(fila3).Cells Select CInt(cell.Value)).Sum

        Dim sumFila5 As Integer = (From cell As DataGridViewCell In DataGridView1.Rows.Item(fila5).Cells Select CInt(cell.Value)).Sum

        Label1.Visible = True
        Label1.Text = "La suma de los valores de la primer fila es de " & sumFila1

        Label2.Visible = True
        Label2.Text = "La suma de los valores de la tercera fila es de " & sumFila3

        Label3.Visible = True
        Label3.Text = "La suma de los valores de la quinta fila es de " & sumFila5



        Dim Total As Single
        Dim Col1 As Integer = Me.DataGridView1.CurrentCell.ColumnIndex
        For Each row As DataGridViewRow In Me.DataGridView1.Rows
            Total += Val(row.Cells(Col1).Value)
        Next
        Me.Label4.Text = "la suma de los valores de la primera columnas es de " & Total.ToString
        Dim Total1 As Single
        Dim Col3 As Integer = Me.DataGridView1.CurrentCell.ColumnIndex
        For Each row As DataGridViewRow In Me.DataGridView1.Rows
            Total1 += Val(row.Cells(Col3).Value)
        Next
        Me.Label5.Text = Total.ToString
        Dim Total2 As Single
        Dim Col5 As Integer = Me.DataGridView1.CurrentCell.ColumnIndex
        For Each row As DataGridViewRow In Me.DataGridView1.Rows
            Total2 += Val(row.Cells(Col5).Value)
        Next
        Me.Label6.Text = Total.ToString


    End Sub

    Private Sub VOLVERALMENUINICIALToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles VOLVERALMENUINICIALToolStripMenuItem.Click
        Me.Close()
        mnprincipal.Show()
    End Sub

    Private Sub SALIRToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SALIRToolStripMenuItem.Click
        MsgBox("desea abandonar el programa", 36)
        MsgBox("esta seguro de salir", 36)
        MsgBox("hasta pronto")
        End
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        DataGridView1.Columns.Clear()
        DataGridView1.Rows.Clear()
        Label1.Text = ""
        Label2.Text = ""
        Label3.Text = ""
        Label4.Text = ""
        Label5.Text = ""
        Label6.Text = ""



    End Sub

   
End Class