Sorting Number Numerically In List View?
Dec 18, 2010
In 2007 I created a program that reads weather data into a listview. When a user clicks on the column header it fires off the column click event handler which calls the Sort Wrapper function. The Sort wrapper will re-order items either in ascending or descending order.
I have never been able to get negative integers to sort properly. I have created a stripped down listview program with a few numbers in the grid for testing. (see attached program zip file).When you run the program, click on the column header that says "Val" and you will see right away that the numbers do not sort correctly.
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Jan 28, 2010
I need to sort the items in a visual basic listbox numerically, that is, I have a collection of numbers I would like to be sorted increasingly.
I tried to simply use the listbox's Sorted property, but found that it treated the numbers as if they were strings, that is, it would look at the first digit, then the second, etc. to determine the order. That meant that 13 would show before 5, for example.
I thought of dumping all the numbers into an array, soring the array, and then pushing them back to the listbox, but, honestly, I don't know how to go about the sorting. I figured the array would be useless, since the listbox already acts as a pseudo array.
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May 20, 2011
I've been searching for days for a solution. I've scoured the internet and other forums and tried so many things at this point that I think my brain may explode.I receive a large XML file from a third party vendor. I have converted the XML file to a a dataset and use the dataset to fill a datagridview with a specific table. I do not have a schema from the vendor and the XML file does not contain any data type information. The datagridview populates fine but all columns are defaulted to type string. This presents a problem when sorting columns that should be numeric - they sort by string comparison instead of logically numeric. I've tried numerous ways to attempt to convert the datatable columns to integer to no avail.
[Code]...
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Mar 16, 2012
I have a datagridview which is bounded to a table m_table constructed in my code. A column named price has decimal type.
DGV.DataSource = m_table
DGV.Columns(columnPrice).ValueType = System.Type.GetType("System.Decimal")
All prices are in decimal. But I found that when clicking the column header of DGV, the price column is sorted like a string. For example:
9.0, 13.5, 8->13.5, 8, 9.0
But I want sort numerically, that is 8,9.0,13.5
I wonder why decimal type cannot be sorted numerically. How to achieve this?
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Feb 26, 2011
In Visual Basic 2008 or 2010. How to sort numerically in this format:
From this:
"basketball" 900,000
"golf" 300,000
"bike" 600,000
"snow boarding" 800,000
"mountain climbing" 500,000
"roller blading" 100,000
"soccer shoes" 400,000
"football team" 700,000
"field track" 200,000
To this numerically:
"roller blading" 100,000
"field track" 200,000
"golf" 300,000
"soccer shoes" 400,000
"mountain climbing" 500,000
"bike" 600,000
"football team" 700,000
"snow boarding" 800,000
"basketball" 900,000
I would like to have a form application that I can drag n drop the words with their numbers into a Textbox1.text and have the Textbox1.text do the sorting.
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May 3, 2012
I have a list of strings lets say the items are like this:
item_1
item_2
item_4
item_10
item_8
item_11
If I do list.sort() I get the following
item_1
item_10
item_11
item_2
item_4
item_8
Somehow I need to get these in order numerically but I am dealing with strings not numbers.
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Dec 28, 2009
how we can sort a listview on column wise in a simple way?
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Aug 15, 2011
I am using the code from hereevelopment/vbnet/code/370426 to sort my listview items. But I want something more 'dynamic': when I click on a header column, I want that it changes the sorting based on the column that has been clicked. here is my code:
'Classes usadas
Imports System.Math
Imports System.IO
[code].....
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Jun 23, 2010
I'm killing myself and dehydrating trying to get this array to sort.I have an array containing directories generated by;Dim Folders() As String = Directory.GetDirectories(RootPath)
I need them to be sorted so they appear like in windows explorer in win7 / vista. -- numerically and alphabetically by folder names.The folder names contain both letters and numbers, sometimes letters only or numbers only.
[Code]...
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Nov 12, 2010
I created a sorter that StrCmpLogicalW / shlwapi.dll. unfortunately it causes errors on partial trust environments. I am in a really bad need of a solution that does not use 'shlwapi.dll' or StrCmpLogicalW and works in the same fashion.
Here's the sorter that causes the error.
Public Class nvSorter
Implements IComparer(Of String)
Declare Unicode Function StrCmpLogicalW Lib "shlwapi.dll" ( _
ByVal s1 As String, _
[code]....
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Mar 12, 2008
I get some very generik trouble need to implement List View with Image in SubItem. All can be very fine ....But I need to use Virtual Mode. Whatever I search I haven't still found working solution's. I have found some C# code that seem's do that. But I can't convert it in VB.Net. let's explain detaly.
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Mar 18, 2012
basically i had to write a program where a user enters the amount of countrys taking part in the Olympics and enters there medals. i should then be able to sort the country's out with the best country being the one with the most amount of gold meals. my problem is its not sorting it out and oping someone could help. i also have a problem where i automatically want the program t work out the total by it self and don't know where to put it.
data
Public Class fmldn
Structure Olympicsinfo
Dim country As String
Dim gold As String
[code]...
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Aug 3, 2009
I am trying to sort my ListView in both ascending and descending order when I click on column headers in Details View. When I click on it, it is able to sort one way, but subsequent clicks don't cause any more sorting to occur. I am attempting to follow the examples shown on the msdn site:[URL].. Here is what I have so far:
[Code]...
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Apr 11, 2009
I am trying to sort a form datagrid alphabetically by the column titled Name. Here is code I am trying. This is my first attemp at programming other than VBA.Public Class Agents
Private Sub Agents_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'TODO: This line of code loads data into the 'AgentsDataSet.Agents' table. You can move,
[code].....
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Jun 9, 2009
the VB .net experts. I added the following code and I get an error as shown below.
[CODE]....
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Dec 29, 2009
I want to develop a tree view and list view form by using vb6, how to construct a tree view and list view form?
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May 21, 2009
I am facing issue sorting my grid view on date column in ascending order.
Private Sub SortGridView(ByVal dt As DataTable, ByVal col As String)
dt.DefaultView.Sort = col & " DESC"
GridView1.DataSource = dt
End Sub
Where col is "date" and dt is the data table to sort
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May 30, 2012
how to view explorer in list view control?
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Jan 21, 2011
i have 1 button, 1 listbox and 1 textbox.this is my code
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
ListBox1.Items.Clear()
Dim finish As Integer = TextBox1.Text
[code]....
if i set the sorted property of listbox1 to true that code will add 0 before the inputted number so that the sorted property in listbox1 will be usefull in sorting integers.
for example i have 1,15,30,36
it will make 001,015,030,036
thats what i think am not sure because i cant edit the code so that it will work in my program.
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May 22, 2012
I have a text and numeric data in a column of excel. data is 1,2,3,A,B,C,D,10,11,12. I want to do sort these by SQL. and i want get data in below order 1,2,3,10,11,12,A,B,C,D.
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May 3, 2010
I have problem with Sorting ListBox in Visual Basic 2008. When I load names from some files (file's name is number_name like="156_blabla") and I need sort it by that number
It is:
1018_name1
102_name2
1026_name3
And I need it:
102_name2
1018_name1
1026_name3
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Nov 14, 2009
I'd like to know how to sort an array that has entries with numbers after text.
I have a list of four entries:
Book 1
Book 2
Book 11
Book 12
Using Array.Sort(aBooks) returns
Book 1
Book 11
Book 12
Book 2
Is there a way to have it sort lowest to highest like 1 2 11 12 instead of 1 11 12 2?
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May 10, 2011
I have a dataview object that is being populated by database fields - so I can sort on these partulular columns by specifying the actual column names without any difficulty. However, I have been asked to add a few more columns to the dataview, and these columns will be calculated columns, not directly derived from an underlying database column.The users want to be able to sort on these new columns as well - even though there is no actual column name I can use to sort.
I have not been able to see where I can sort a dataview based on the actual column integer value used when the user clicks the appropriate heading to sort.
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Feb 9, 2009
How to use built-in classes in VB.net for sorting the following number in the desired order?
Number: 5,10,24,9
Desired order: 5, 9, 10, 24
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Jan 29, 2010
I'm trying to sort a List of objects with a generic comparison.I get an exception when the property on which I'm sorting happens to be null in one of the objects.VB.NET 2.0, web.i've read several posts on this exception, and still don't get it.[code]It is true that this only happens on properties which happen to be null somewhere in the list.Sometimes I sort on other properties which happen to always be always non-null (using a different, but similar, comparison method), and this technique works just fine.I've tried to implement the CompareTo for both IComparable and IComparable(of FollowupSurvey) so I could capture this exception while debugging, but netiher actually get invoked (despite what it seems like the exception is telling me). At this point, I don't have a CompareTo in my FollowupSurvey object; thus, it's using Object's.It doesn't seem as if I can really help if the base CompareTo doesn't reutrn 0.anyone have any idea what this exception really means, and how to make sorting work properly?
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Jun 25, 2011
I have a list (i.e. Dim nList as new List(of className)). Each class has a property named zIndex (i.e. className.zIndex). Is it possible to sort the elements of the list by the zIndex variable in all of the elements of the list?
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Mar 16, 2012
Suppose I have:
Public Class myClass1
Dim foo As String
Dim bar As String
[code].....
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Jan 30, 2010
I have a simple type like:-
[Code]....
if I have a list of type top_params then how can i sort the list based values in the k_sig_level field?
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Jul 24, 2009
I am loading a series of JPG images into an image list then using that to fill a list view. My program is using ALOT of memory by doing this. What would be the easiest way to add the images but take up less memory/time?
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Apr 18, 2011
I have a list of instruments and I need to sort them to the following requirement.
order by:
cash
securities in alphabetical order
managed funds in alphabetical order
I have a list of instrument which has properties name and type, I've managed to sort alphabetically by name.
Instruments.Sort(Function(x, y) String.Compare(x.Name, y.Name))
Instruments.Sort((x, y) => string.Compare(x.Name, y.Name));
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