Sort GetFiles Result In Custom?
Jun 13, 2010
Dim o As New System.IO.DirectoryInfo(Application.StartupPath() + "p") Dim myfiles() As System.IO.FileInfo
myfiles = o.GetFiles("*.r**")i have such code. for example I got 4 files in tmp dir. it's called file.rar, file.r00, file.r01 and file.r02 ,the return Array always comes as follow file.r00, file.r01, file.r02 and last is file.rar. Now I want the result in order like first file.rar and next is 00 01 02 03...n etc how to make it ? anyway dont make .rar in last I want to make it in the first place.seems there is a Array.Sort but I dont know how to use it this way.
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Jun 24, 2010
How do I (i) sort the array of type FileInfo returned by the DirectoryInfo.GetFiles method by (file) CreationTime in descending order and (ii) once the array is sorted efficiently load it or convert into a Queue object (of type FileInfo) for subsequent processing. I thought of using the queue object as it handles things on a FIFO out basis and I'll be adding to the queue as new files arrive.
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Jan 9, 2009
I'm trying to sort my listview using a custom icomparer. I have to sort numbers, strings, dates, and currency.
Here's the code to sort:
compareResult = ObjectCompare.Compare(listviewX.SubItems(ColumnToSort).Text, listviewY.SubItems(ColumnToSort).Text)
The problem is it sorts numbers wrong, such as:
10
2
3
instead of
2
3
10
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Oct 16, 2009
I've created a custom MessageBox (a Form), that has buttons Yes and No. There is a function popUp() to show the MessageBox. I would call the MsgBox in a parent as follows:
CustomMessageBox.popUp()
Now I want the message box to return a value:
Dim a as Intger = CustomMessageBox.popUp()
But this should only return once the user clicks a button in the message box.
My popup sub:
Dim thread As New Threading.Thread(AddressOf GetResult)
Public Function PopUp(Optional ByVal ErrorMessage As String = "", Optional ByVal Title As String = "", Optional ByVal ButtonType As ButtonType = ButtonType.OK, Optional ByVal MessageType As MessageType = MessageType.None)
[Code] .....
gotResult is a Boolean = false. It the user clicks a button gotResult is changed to true.
result is a integer containing the number of the button clicked.
When I run this code, the result is returned, even if the user doesn't click a button. I understand why, because the main thread of the form is not "paused" while the user has not clicked a button. How can I pause the message box itself, until a button was clicked?
I've tried this:
Public Function PopUp(Optional ByVal ErrorMessage As String = "", Optional ByVal Title As String = "", Optional ByVal ButtonType As ButtonType = ButtonType.OK, Optional ByVal MessageType As MessageType = MessageType.None)
[Code] .....
But now the whole message box is captured in a loop and the message box is like disabled, because it waits for the loop to end, so the user can't click anything.
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Aug 2, 2010
I support a .Net 2.0 Windows application that has a custom listview control to allow for greater flexibility. I am not allowed to bring this to a newer version of the gramework until next year. We are moving from XP to Windows 7, and we have identified an issue with how the column sort image (up/down arrow) is drawn to the listview. Currently in XP, the image is drawn to the right of the column's text. However, in Windows 7, I am getting Access Violation Exceptions. Now, I know that the error is with the improper handling of memory using the unmanaged code as shown below. I am looking for a method to mimic what we have below in a safe manner using managed code.
[Code]...
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Sep 3, 2009
How can I sort an ArrayList of custom objects by public member? Example,If I have a list of article objects, and I'd like to sort the list by the rating member after I've filled the ArrayList
Public Class Article
Public bulletin As String
Public rating As Integer[code].....
Now I'd like to sort uniqueArticles by rating and print articles by rating order.How do I do perform that sort?
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Aug 3, 2011
I am developing a custom messagebox class like the following-[code]...
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Apr 12, 2012
I'm trying to build a web application that uses an SSL connection. So I did some research and found out that I could use the RequireHttpsAttribute class to achieve what I needed. Thing is that when I use it, the execution of the application results in an 310 error(too many redirections). I even built a custom class to handle the switch from http to https. [code]
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Jan 17, 2012
So...numeric sorts. Do I really need to write a custom comparer to make a listbox full of numbers sort itself like:
[Code]...
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Apr 27, 2011
I have a user control that checks if a certain query string and session value are present then returns a boolean based on that, if it's true I want to set the master page. The page is throwing an Object reference exception when it tries to call the method EditUser1.UserAuthorization(). Why is this happening? I imagine that the method doesn't exist at that point in the stack. Protected Sub Page_PreInit(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.PreInit
[Code]...
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Dec 10, 2010
I am currently having a headache on how to solve this problem that i am facing. here is the situation: I have a combobox and a list box on the main form. The combobox will get the data from the ms access database. In the database, i have the details of a person's IC, Name and DOB say for eg on one entry I have D215311523C,SHAWN,13/04/1987 So now, my combobox on form load will show the list of dates in the database to allow the user to search base on the date itself by clicking on the selected date. So when the user clicks on the particular date say 13/04/1987, people in the database whose birthday is 13/04/1987 will be shown on the listbox.Meaning to say if i have 3 entries whose dates are the same 13/04/1987, 3 entries will appear. If there is only two entry, then two results will be shown. But now, when i do a single click on the date, one result will be shown. That is correct. But the problem is when i click on the same date again, three of the same results will be shown on the list box. that is it will display : 13/04/1987 13/04/1987 13/04/1987 which is not the case. Then it will show more duplicates of the same results if i click more times on the same date which should not be the case.
Dim n As Integer
Dim numbers() As Integer
Dim StartFrom As Integer
Dim EndAt As Integer
[code].....
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Sep 25, 2010
I am using a datagrid in my where i am having four columns. In first column the parameter values are entered and in the second column measured value is entered and in third column the nominal value is entered.Inthe fourth column the result is displayed by subtracting the measured value and nominal values. I am doing this calculation in Datagrid cell validated event. What i want is,there will be many rows in the grid,when typing the value in the third column the corresponding result will be displayedin the rowof theresult column,save button will be displayed while the form loads,when the calculate part is completed that is there should not any cell of the resut column empty then i should enable the save butto.
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Oct 14, 2009
I am encountering the following issue So i have a device that sends stuff at the serial port, i then parse it and put it into an array of bytes like that:
Dim HCI_Command_Rcvd_Byte() As Byte All good till here What i wanna do is make an array and put this result every time the serial port gives me a new result, for example:
[Code]...
Basically what i wanna do is let the port parse the messages, fill in the array with the result at an empty spot in this array and then i will have a separate thread that will look in into this array in each non empty space and after it looks into the non empty space it will use or discard the info and also mark this space as empty (after it checked)
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Dec 15, 2010
How can I improve this bit below to make the items in the TreeView to sort faster or something totally different to sort them easier?
[Code]...
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Jul 5, 2011
I have a MyObject; myObjects as List(Of MyObject) and a delegate Comparison(Of MyObject) that uses a lot of comparison functions (ByA, ByB, ByC etc) Ã la:
Shared Function CompareMyObjectsByName(x As MyObject, y As MyObject) As Integer
Return x.Name.CompareTo(y.Name)
End Function
[Code].....
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Jul 23, 2009
I used the GetFiles function in the following code:
frmConvert.ListBox20.DataSource = My.Computer.FileSystem.GetFiles("c: empparse")
I need to do the exact thing as above but into an Array and not using a ListBox.
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Apr 16, 2010
I just read about DataSet in VB.NET, it uses disconnected concept. My question is: if my apps has "List All" button that query data from 1 table in the database, and that table has "very very very" many rows, so my DataSet will be filled with those data and eat up memory. Can I limit the data that being put to the DataSet from that query? But I want to be able to retrieve the next data from the same query if the user want to see it?
For example:
I have 1000 rows in my database, and i query all of them. But I just want 200 rows being inserted to my DataSet, but if the user want to see rows number 201 and so on, I want to be able to retrieve the next 200 rows, and so on. So it just like cutting those data into a group of 200 rows. Can I do this with the concept of "disconnected" of the DataSet?
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Apr 6, 2011
I can't figure out how to use the (because im noob)ystem.io.directory.getfilesIf I try to put it in a textbox for example textbox1.text = system.io.directory.getfiles("my directory") then I just get the error message "Value type of '1-dimensional string of array' cannot be converted to 'string'. First of all I have no idea what the '1-dimensional string of array'thing is.And if I try to put in a msgbox for example sgbox(system.io.directory.getfiles("my directory")) then I can run the program but when I click my button then it says "it can not convert argument prompt to string(google translated)". And second, I don't know what the prompt thing is either
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Nov 17, 2009
i am using the getfiles function to have all the files in a specific path but i want to use the getfiles to find .rar and .mp3 getfiles("c:program files",)
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Mar 15, 2010
It seems like FileSystem.GetFiles() is unable to recover from the UnauthorizedAccessException exception that .Net triggers when trying to access an off-limit directory.In this case, does it mean this class/method isn't useful when scanning a whole drive and I should use some other solution (in which case: Which one?)? Here's some code to show the issue:
Private Sub bgrLongProcess_DoWork(ByVal sender As System.Object, ByVal e As System.ComponentModel.DoWorkEventArgs) Handles bgrLongProcess.DoWork
Dim drive As DriveInfo[code]...
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Mar 23, 2009
If I want to bind the files of a folder to a gridview, I can just do this:
GridView1.DataSource = New DirectoryInfo("C:MyPix").GetFiles
GridView1.DataBind()
...And this asp.net
<asp:GridView ID="GridView1" runat="server">
[Code]...
...But if I want to bind it to a repeater in stead, I would think I could display the filename like this:
<asp:Repeater ID="Repeater1" runat="server">
<ItemTemplate><%#Container.DataItem("Name")%></ItemTemplate>
</asp:Repeater>
...But that gets me the error "No default member found for type 'FileInfo'."
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Jul 20, 2011
If I have a folder with a bunch of ".htm" & ".html" files in it and I use
My.Computer.FileSystem.GetFiles(myFolder, FileIO.SearchOption.SearchTopLevelOnly, "*.html")it returns all the ".html" files, as expected. But if I useMy.Computer.FileSystem.GetFiles(myFolder, FileIO.SearchOption.SearchTopLevelOnly, "*.htm")it returns ".htm" & ".html" files, when I would expect it to return only the ".htm" files. Is this a bug?
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Apr 27, 2009
I am wondering if there is a simple method to filter the result returned by Directory.GetFiles(). Basically I am looking to retrive all of the jpg files in a selected folder into an array. My current code works fine if the folder only has jpgs in it which should be the case in operation but I would like to make sure it works correctly when the folder contains other types of files as well. The line I am currently using is..
Code:
files = Directory.GetFiles(IMAGE_DIRECTORY) files is defined as an array earlier in the program and as I mentioned my program works fine when the folder has nothing but jpegs within. The problem is that I am creating a listview with thumbnails from these files and run into some indexing issues when there are non jpgs in the target folder. The easiest solution would seem to be a filter on the getfiles method that would return only files witht he given extension.
Anyone know how to do this or will I need to parse the files out of the array in a second process?
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Jan 14, 2005
When you do GetFiles() you can specify a search pattern such as *.txt. How can I specify multiple patterns. For example, in windows search you do *.jpg;*.bmp;*.gif. I tried that but no luck and the msdn not work. Is this possible?
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Jul 10, 2009
im trying to search my hard drive for jpg files and it works great except for when it hits a system file, i have admin access. I tried try/catch but it didn't work for me. All i need it to do is skip that file that is denied access. [Code]
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Nov 11, 2011
I'm using the following code.
Dim dir As New IO.DirectoryInfo(FolderBrowserDialog.SelectedPath)
Dim files As IO.FileInfo()
Dim filename As IO.FileInfo
If (rbNoSubfolders.Checked) Then
[Code]...
I'm getting an "Illegal characters in path" error. How can I fix this?
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Jan 18, 2010
i need to set more filters (or patterns) in:
vbcode
System.IO.Directory.GetFiles(path, "*.jpg")
i need to get not only jpg but more extension,how?
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Jan 4, 2010
First off i have this:
[Code]...
I am making my own Anti-Virus and trying to get all the files but on that when it tries to scan it comes up with an error saying: Access to 'C:Documents and Settings' is Denied
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May 30, 2012
My.Computer.FileSystem.GetFiles(My.Computer.FileSystem.SpecialDirectories.ProgramFiles, FileIO.SearchOption.SearchAllSubDirectories, "MSAccess.exe")
or
[code].....
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Feb 20, 2012
I'm trying to load the most recent file from a directory, but my following code doesn't work. Am i getting something obvious terribly wrong?!
Dim myFile = Directory.GetFiles("C:UsersJoeDesktopXML Logs").OrderByDescending(Function(f) f.LastWriteTime).First()
I get two error messages:
Data type(s) of the type parameter(s) in extension method 'Public Function OrderByDescending(Of TKey)(keySelector As System.Func(Of String, TKey)) As System.Linq.IOrderedEnumerable(Of String)' defined in 'System.Linq.Enumerable' cannot be inferred from these arguments. Specifying the data type(s) explicitly might correct this error.
And:
'LastWriteTime' is not a member of 'String'.
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