.net - Sort Datatable / Dataview / Gridview Of Files Based On File Modified Date

Aug 2, 2010

I have a page which lists all the files in a particular folder (all PDFs), using a data-table and gridview. I'm currently sorting this table by the filename (by using a dataview), which isn't that helpful, and I want the gridview of files sorted by the file created or file modified date (as recorded in Windows). If that's not possible, a second option would be to extract the date from the file name string (no problem doing that), and sort the dataview/datatable or gridview based on that.

[Code]...

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DataView.Sort - DataView.Find On A DataTable That Is Already 'ORDERED' By The Column

Nov 20, 2010

If want to do a DataView.Find on a DataTable that is already 'ORDERED' by the Column I am seaching, so a DataView.SORT should not be necessary, but it throws an Exception if I don't give a .sort command before the .find command. Is there any way to avoid this apparant duplication ? and speed up the search time. Its a very large table - 1 million rows. I am using VB 2010

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Sort Files In Directory Based On Part Of File Name?

Jan 27, 2012

How to sort the files in the directory based on the part of the file name?[code]...

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Sorting With DataView - Dataview Always Sort The Highest Number Is The Buttom

Jan 5, 2012

I got a problem with dataview that get data from datatabel (Col1 : ID,Col2: Time) and I'm sorting by Time in desc ... when the values for example {40.21,80.21,70.25,25.2} the dataview sorting them as I need but when one of values goes above 100 for example {40.21,80.21,100.25,25.2} the dataview always sort the highest number is the buttom, I don't know why ..

This is a sample code

Dim dt As New DataTable
dt.Columns.Add("ID")
dt.Columns.Add("Time")
[CODE]...

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Sorting Files - Get Files Name - Modified Date In A Folder

May 30, 2012

i am trying to get files name, modified date in a folder Before i get those files, can i pump a command by using vb to the folder and make them sort by modified date?

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Copy Files By Date Modified?

Mar 18, 2011

I'm trying to create a program with VS2008 that will:

Allow me to copy 30 newest .txt files from a folder by looking at date modified. This can be hardcoded or a text box that prompts the user for how many days of files to pull.

[code]...

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Sort On Date Column Gridview?

Nov 5, 2010

I got a gridview which auto generates columns. One of the columns is a date field.Somehow, i cant sort the date field. It's being interpreted as a string.The data comes out a database. The datatype there is set on datetime.his is the code in the aspx file:

<asp:BoundField DataField="date" HeaderText="date" SortExpression="date" DataFormatString="{0:dd/MM/yyyy}" HtmlEncode="false"/>

[code].....

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Visual Studio 2010 Setup Installer Files Modified Date?

Jun 18, 2012

I have created installer from Visual Studio Package and Deployment, but after successful installation, the installer files (like dlls, images and all supporting files) modified date or even creation date has been changed and all have the same date depends on the date of installation. Is there a way I can preserve or maintain it's original creation/modified date?

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VS 2008 My.Computer.Network.Downloadfile - Test A Files Date Modified Before Downloading It

Oct 18, 2009

I have read about Network.Downloadfile and I think I understand it! I want to know if there is an easy way to test a files date modified before downloading it. I have a lot of files in the folder. I really want to "sync" the folder. I don't want to copy every file every time I want to only download the file if I don't have the file in the destination location or if I have an Old copy.

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Setting A DataTable Column To A Date Format To Sort Correctly

Dec 1, 2011

First off a great piece of code [URL] you saved me soooo much time. I am a somewhat newbee to VB2010 and was wondering how would i go about setting lets say setting column(4) to a date format so that i can get it to sort in the correct order.

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.net - Get File Modified Date

Sep 8, 2010

I have a number of files in a folder, I need to get the last modified date. So I used FDate = IO.File.GetLastWriteTime(FName) Works fine with some files, but on others, I get a date of 1/1/1601. But when I check the files in Windows Explorer, all the dates look normal (recent). So, I'm gessing there are multiple files dates stored in the file system, and the ones dotnet is seeing are not the ones windows is seeing. How can I get exactly the date which appears as "date modified" in a file explorer window? I tried some vb6 api stuff but that doesn't seem to work in dotnet.

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Open File By Using Date Modified?

Sep 30, 2009

I want to open a file from a folder by using the date modified properties in a file.

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Retrieving File Modified Date?

Apr 5, 2009

I'm using VB.net 2003 Standard Edition, and I'm trying to retrieve the file modified date. I've created a System.IO.FileInfo object, and have collected info from the three methods: CreationTime, LastAccessTime, and LastWriteTime, but they aren't giving me the same data as XP Windows Explorer is.In Explorer, there is a Date Modified field (currently reading 2008 on the file in question), but using the FileInfo methods they return 2007, 2009, 2009.Is there another IO object I can use to get this 'modified' date?

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Determine The File Size And The Date It Was Last Modified?

Jan 4, 2010

how can i determine the file size and the date it was last modified..

i need to compare two files and determine which one is the latest and which one is bigger in file size..

compare a.xml to b.xml..

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File Creation/modified Date/times?

Mar 16, 2010

I created a background thread that constantly scans a specified folder for any .xls files that are created or modified. These files come from a vba macro in outlook that will automatically save the attachments of the mails in the this folder. This will update the modified date/time, or at least it seems to.

For Each fi In aryFi
fidate = System.IO.File.GetLastWriteTime(path & fi.ToString)
fidate1 = System.IO.File.GetCreationTime(path & fi.ToString)

[code]....

Everytime I check to the code, the fidate and fidate1 variables are indeed the correct dates/times of the file it's currently checking. It almost never gets inside the elseif block at runtime though.

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VS 2005 Changing Last Modified Date On A File?

Mar 24, 2010

I have an ftp routine which gets various files from a server and puts them on a client PC.My problem is it loses the original Last Modified Date on the client PC. I can get the last datetime modified from the server but don't know how to assign this to the file on the client PC. Is there away to alter the last modified datetime?

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Use Icompare To Sort A Structure Of Files By Date?

Feb 18, 2010

I'm using Visual Studio .Net 2008 on Vista. The goal of my program is to watch a directory, get file information, then sort them by thier date, and produce a updated text file. I can't seem to get my code to generate a list of files sorted by date. The code does produce a general list of files, however presently ordered in the directory. I also tried an alternate way of sorting the files by date by creating a string, removing the date using substring, then comparing the file dates using datetime.parse but it produces a exception error.[code]...

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VS 2005 Datatable Vs Dataview - Apply A Filter To The Defaultview.rowfilter Property Of That Datatable

Mar 15, 2010

I have a datatable and I apply a filter to the defaultview.rowfilter property of that datatable. If I then loop through the rows collection of the datatable, will I only be able to see those rows that the filter applies to, or will it loop through all the rows?

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Sort Based On Column In Text File?

Aug 22, 2009

I have text file whic look like this[code]...

I want to swape the lines based on second and third column.. I must first swape based on second column in decending order wher the big number will come first. Like here the lines with number 30 will come first followed by 28 and so on. Then i must swape the colors. Like all the Black will come first follow by[code]...

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Sort A DataView In Decending Order?

May 21, 2012

I am sorting a dataview by a date/time stamp. As of right now it is sorting it oldest to newest. How might I write it to write from newest to oldest?

[code]...

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Sort Numbering Coloum In Dataview?

Oct 23, 2010

I want create a datatable .In this datatable 2 coloums are percentage and marks I want to show the maximum percentage record display on first and simultaneosly another racord ?Thats why i take a dataview but dataview could not sort the datatable

exam.
Dim view As DataView = dt.DefaultView
view.Sort = "clm_percentage DESC"
dgvStudInfo.DataSource = view

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Sort Numbering Column In Dataview?

Mar 2, 2012

I want create a datatable .In this datatable 2 coloums are percentage and marks .I want to show the maximum percentage record display on first and simultaneosly another racord ?Thats why i take a dataview but dataview could not sort the datatable exam.

Dim view As DataView = dt.DefaultView
view.Sort = "clm_percentage DESC"
dgvStudInfo.DataSource = view

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Copy Filtered DataView To DataTable?

Jun 1, 2009

I start by looping through a string array, parsing out the strings I want and saving them to a temp table (I believe this part is working).Then, I take a DataView of the tale to get only the unique values from the rows.Then, things get messy, I need to get these unique values into my dataset. I been trying to do so using the DataView and also by passing the View to a new temp table then looping the values into the DataSet

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Create A DataView From The Dataset / Datatable?

Jan 2, 2010

How to create a dataview from a datatable?

What is the basic use of the created dataview?

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Sorting A Dataview Object Based On A Column Number?

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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VS 2010 Filter Data With DataTable And DataView?

Feb 15, 2012

I'm loading a DataGridView from a DataView which collects data from a DataTable. I use the DataView to filter, this is the

Dim dv As New DataView
dv = DataSet4.Tables("TABLA1").DefaultView
dv.RowFilter = "propietario='" + NombrePro + "'"

[code].....

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Update A DataTable From A Modified DataGridView?

Jan 9, 2011

- i have a DataGridView (DGV) whose datasource is a DataTable (not BindingSource).

the DGV is used to sort the datatable before splitting the fields into different textboxes.

i can add/delete record from the DGV and the Database is modified accordingly. but it seems that i can append an existing record in the DGV thru the textboxes but the changes are not made to the database.

here is my codes for the form and buttons:

'*****This One Works Fines but it is used to add new records****
Private Sub CmdCommit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles CmdCommit.Click
If Index <> -1 Then

[Code]....

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Update A SQL Table From A Modified Datatable?

Feb 9, 2011

I used the DataSet Designer to create FTWDataSet which holds the AlarmText table from a SQLExpress database.This far my form contains ONLY Datagridview1.The code below successfully shows the contents of the AlarmText table plus the one added checkbox column (which I will populate with display-only data, and is not an issue here).

Dim ta As New FTWDataSetTableAdapters.AlarmTextTableAdapter
Dim dt As New FTWDataSet.AlarmTextDataTable
ta.Fill(dt)[code]....

What else do I need to do to use the DataGridView to edit and save values in the AlarmText table?

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Find The Original Position In A DataTable From A Filtered DataView?

Aug 5, 2011

I want to find a particular ID in a DataTable, I am using a DataView to filter the results, but how do I know which row in the original table the filter view corresponds to? Any ideas? In know I could use LINQ but I don't think this would help either?

[Code]...

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Synchronize Datatable And DataView For Read / Write Operations?

May 5, 2010

I have application in .net 2.0 in which I have a DataTable object globally in my application and have different dataviews in whole application.

When an action performed i have create many threads lets say 5 in which data is read from different dataview, meanwhile while 2/3 threads are reading data(not all 2 more left to read data) a thread write data in datatable. So we get exceptions like "Enumeration update" or "parameter not null" type.

I have use ReadWriteLock for this but do not find any luck it gets stop on ReaderWriterLock.AcquireWriterLock().

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