?
Solved

Sorting a boolean column in datagridview +vb.net 2005 windows programming

Posted on 2010-09-16
10
Medium Priority
?
734 Views
Last Modified: 2013-11-07
Hi,
I am struggling on how to sort a boolean column in datagridview.
When grid is bound with datatable the column has no value in it.Now when I check the row the item value of the boolean column value  is true and when uncheck it the value gets false.
When the column is sorted it sorts by the false and blank value.This is a problem how do I make blank and false same when sorted.Any suggestions?
0
Comment
Question by:RIAS
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 6
  • 4
10 Comments
 
LVL 18

Expert Comment

by:John (Yiannis) Toutountzoglou
ID: 33690814
1.What do you mean with Blank Value
2.Set the ThreeState of datagridviewCheckBoxColumn to false
me.DatagridviewCheckBoxColumn.ThreeState=False
0
 
LVL 18

Expert Comment

by:John (Yiannis) Toutountzoglou
ID: 33690893
Otehr Question ..Isn't the column contains CheckBoxes A DatagridView CheckBoxColumn?
0
 

Author Comment

by:RIAS
ID: 33691433
Hi,
No its a not a checkbox column it is a

dtTemp.Columns.Add("Selection", GetType(Object))
so it has a false or true value as I didnt want he checkboxes to appear in the column I created a column like the above.
 
0
Stack Overflow Podcast - Developer Story

Welcome to the Stack Overflow podcast recorded Thursday July 20 at Stack Overflow Headquearters in NYC. Your hosts today are podcast regulars Jay Hanlon, David Fullerton, and Ilana Yitzhaki, plus the quite irregular Matt Sherman (Stack Overflow Engineering Manager extraordinaire)

 

Author Comment

by:RIAS
ID: 33691447
Blank Value is dbnull value
0
 
LVL 18

Expert Comment

by:John (Yiannis) Toutountzoglou
ID: 33691679
I think that the column add method requires string,string
Me.datagriview1.Columns.Add("ColumnName" as string,HeaderText as string)
0
 

Author Comment

by:RIAS
ID: 33692051
But how do you add a object column to datatable.Isn't this the way
dtTemp.Columns.Add("Selection", GetType(Object))  
0
 
LVL 18

Expert Comment

by:John (Yiannis) Toutountzoglou
ID: 33692211
a sory it is a datatable...
0
 
LVL 18

Accepted Solution

by:
John (Yiannis) Toutountzoglou earned 2000 total points
ID: 33699027
Other way is to sort in a default View before populate the datagridview...
Try the Function Below


ortDataTable(YourDataTable, B,"YourColumnName", True)
Private Function SortDataTable(ByVal dTable As DataTable, ByVal ColumnName As String, Optional ByVal OrderByAsc As Boolean = True) As DataView
Dim dView As New DataView(dTable)

If OrderByAsc Then
dView.Sort = ColumnName & " ASC"
Else
dView.Sort = ColumnName & " DESC"
End If

Return dView
End Function

Open in new window

0
 
LVL 18

Expert Comment

by:John (Yiannis) Toutountzoglou
ID: 33699041
also try
Me.DataGridView1.Sort(Me.DataGridView1.Columns("SortCol"), System.ComponentModel.ListSortDirection.Ascending)
0
 

Author Closing Comment

by:RIAS
ID: 33699504
Cheers!!!
0

Featured Post

Quiz: What Do These Organizations Have In Common?

Hint: Their teams ended up taking quizzes, too.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

It was really hard time for me to get the understanding of Delegates in C#. I went through many websites and articles but I found them very clumsy. After going through those sites, I noted down the points in a easy way so here I am sharing that unde…
This article shows how to deploy dynamic backgrounds to computers depending on the aspect ratio of display
In this brief tutorial Pawel from AdRem Software explains how you can quickly find out which services are running on your network, or what are the IP addresses of servers responsible for each service. Software used is freeware NetCrunch Tools (https…
If you’ve ever visited a web page and noticed a cool font that you really liked the look of, but couldn’t figure out which font it was so that you could use it for your own work, then this video is for you! In this Micro Tutorial, you'll learn yo…
Suggested Courses

800 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question