Updating Datagridview Value

[Robin25]

 If grid_selected_item.Rows.Count = 0 Then
 
                    grid_selected_item.Rows.Add(txt_article_name.Text, txt_color.Text, txt_size.Text, txt_qty.Text, lbl_selling.Text, txt_discount.Text, GROSS, Total_net, cur_qty, lbl_art_no.Text)
 
                Else
 
 
 
 
                    For ichk As Integer = 0 To grid_selected_item.Rows.Count - 1
 
                        If txt_article_name.Text <> grid_selected_item.Rows(ichk).Cells(0).Value Then
                            grid_selected_item.Rows.Add(txt_article_name.Text, txt_color.Text, txt_size.Text, txt_qty.Text, lbl_selling.Text, txt_discount.Text, GROSS, Total_net, cur_qty, lbl_art_no.Text)
                        Else
                            If txt_article_name.Text = grid_selected_item.Rows(ichk).Cells(0).Value Then
 
                                Dim new_gross As Decimal
                                Dim new_net As Decimal
                                Dim new_dis As Decimal
                                Dim dis_val As Decimal
                                grid_selected_item.Rows(ichk).Cells(3).Value = grid_selected_item.Rows(ichk).Cells(3).Value + Val(txt_qty.Text)
 
                                new_gross = grid_selected_item.Rows(ichk).Cells(3).Value * grid_selected_item.Rows(ichk).Cells(4).Value
                                new_dis = "." + grid_selected_item.Rows(ichk).Cells(5).Value
                                dis_val = new_dis * new_gross
                                new_net = new_gross - dis_val
 
 
 
                                grid_selected_item.Rows(ichk).Cells(6).Value = new_gross
                                grid_selected_item.Rows(ichk).Cells(7).Value = new_net
 
 
 
                            End If
 
 
                        End If
 
 
 
 
 
 
 
 
                    Next
 
                End If

in 1st row it's working and also in 2nd, but in 3rd rows , the data that i enter are getting multiply by the current row . . (Sorry for worse english)

[Rabbit]

It's because you are looping through the rows and adding a row each time the article name doesn't match the grid.

[Robin25]

Thank you again Mr.Rabbit.. . and now i know what should i fix . .

[Robin25]

in hour ago. . .
i try to work out my code but it seem's . . .
if i post my whole code here it's gonna be burst on this page,
any sample code or logic how to update value in unbound datagridview

[Robin25]

Any sample code or something else that describe how to that?

[Rabbit]

You need to add the row outside of the loop and only if the loop says that the row doesn't already exist.

[Robin25]

I revise my whole coding for that, and follow your guide, then. . it's work. Thanks a lot Sir

[Rabbit]

No problem, good luck with the rest of your project.