substract the values in dialgrid in vb.net

hello vijay,have a look at the file uploaded above
mark the answer if it helps you

hello vijay i have written a simple logic based on what you have asked,i am uploading the file too.
Public Class Form1

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

su = DataGridView1.Rows(0).Cells(0).Value - DataGridView1.Rows(1).Cells(0).Value


DataGridView1.Rows(2).Cells(0).Value = su


End Sub
End Class


mark the answer if it helps you