Click here to Skip to main content
11,640,125 members (67,246 online)
Rate this: bad
good
Please Sign up or sign in to vote.
See more: VB VB.NET
Hi friends
I new to using datagridview.I am trying to make a data entry form using an unbound dgv in which I have added columns and row using code but I have difficulty on how to calculate between columns.
I can do it if I add the columns in design time .I would like to know if it is possible to add expression column or calculates between two columns when i add columns and rows like this.

Dim dt As New DataTable
        dt.Columns.Add("col1")
        dt.Columns.Add("col2")
        dt.Columns.Add("col3")
        dt.Columns.Add("col4")
        dt.Columns.Add("total")
 
        dt.Rows.Add("")
        dt.Rows.Add("")
        dt.Rows.Add("")
        dt.Rows.Add("")
 
        Me.DataGridView1.DataSource = dt
        dt.Columns("total").Expression = "[col2]+[col3]"
Posted 11-Dec-12 20:08pm

1 solution

Rate this: bad
good
Please Sign up or sign in to vote.

Solution 1

Try this
 
        Dim dt As New DataTable
        dt.Columns.Add("col1")
        dt.Columns.Add("col2")
        dt.Columns.Add("col3")
        dt.Columns.Add("col4")
        dt.Columns.Add("total")
 
        dt.Rows.Add("")
        dt.Rows.Add("")
        dt.Rows.Add("")
        dt.Rows.Add("")
 dt.Columns("total").Expression = "[col2]+[col3]"
 Me.DataGridView1.DataSource = dt
  Permalink  

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

  Print Answers RSS
0 Suvendu Shekhar Giri 225
1 F-ES Sitecore 170
2 CPallini 167
3 Sergey Alexandrovich Kryukov 144
4 himanshu agarwal 142
0 OriginalGriff 9,081
1 Sergey Alexandrovich Kryukov 8,847
2 Mika Wendelius 7,027
3 Suvendu Shekhar Giri 2,650
4 F-ES Sitecore 2,558


Advertise | Privacy | Mobile
Web03 | 2.8.150731.1 | Last Updated 13 Feb 2013
Copyright © CodeProject, 1999-2015
All Rights Reserved. Terms of Service
Layout: fixed | fluid

CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100