Reading Dynamic Disk Status (WMI)?
Nov 23, 2009ant to ask you if anyone knows a way to read Dynamic disk status (like rebuilding) true WMI
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Reading Status Of LPT Pins Using VB 2008 Express?
Mar 2, 2010I'm using WinXP Professional and VB 2008 Express Edition. I need to check the LPT1 and LPT3 pins for its status high or low. I am new to VB programming and I need to interface LPT
View 1 RepliesStatus Updating While Reading Standard Output?
Dec 23, 2010I use the following code to read the standard output from a command line application from a main winforms application, and then I use the BeginInvoke code to update a textbox with the status. What I am not sure about is if I can have a smoother process. The code loads up about 10 to 20 text inserts, and those are all seen at once... not a smooth process where each status is updated. Any thoughts on if the reading of the standard output and/or the beginvoke code could seem more smooth to the user?
Delegate Sub UpdateUIStatusHandler(ByVal StatusMessage As String, ByVal JobName As String, ByVal Direction As String)
Dim ProcessJob As New ProcessStartInfo(GSyncExe, RunJob)
ProcessJob.UseShellExecute = False : ProcessJob.CreateNoWindow = True : ProcessJob.RedirectStandardOutput = True : ProcessJob.RedirectStandardError
[code]....
Dynamic Added Textbox To Status Bar And Added Event
Jun 10, 2009i have multiple forms in a project and all have statusbar. there is no way to add textbox on status bar but in my previous thread i got the help to add the text box. i created a function in module so that i call that function from all the forms on load and add the textbox on status bar and also add the event on textchange. the function to be called on event change is in individual form (at present)[code]
View 11 RepliesReading Dynamic Controls?
Aug 6, 2012I am creating a page with an area name and an input box next to it, code below:
Dim SQLConnection As New Data.SqlClient.SqlConnection(System.Configuration.ConfigurationManager.AppSettings("sqlstr"))
Dim cmd As New SqlCommand
Dim LoadAreaReader As SqlDataReader
cmd.CommandText = "ListAreas"
[code]....
This works great, the problem I am having now it retreiving the details once Button1 is clicked. I got as far as this:
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
For Each key As String In Request.Form.AllKeys
If key.Contains("txtPrompt-") Then
[code]....
But just need to display the id of the input box that has a value of more than 0. Am I close at all?
Dynamic/string Reading Calculator?
Nov 12, 2011I'm making a calculator that would read a "string" from a textbox and parse it and follow Order-of-Operations/PEMDAS on the string. I have a couple of questions:
1) What would be the best way to parse the code so that it won't just take a "left expression" and "expression" and perform the operation on those 2.
2)How would I be able to make is so that 0 is considered valid, but prevent a 00 or 020 or 002 to be inputed.
Reading 'Checked' Property Of Dynamic CheckBox On Page Postback
Dec 29, 2009How can I check the 'Checked' property of a dynamically-created checkbox during the Page_Load subroutine? Basically, I have a VB.NET page that creates some table rows dynamically, based on a number selected by the user. So, for example, if the user selects "3" from a dropdown list, the page posts back and creates three table rows. Each row contains a couple of textboxes, a dropdown list, and a checkbox (which are all .NET form controls rather than plain HTML controls, I should point out).Typically, the user would enter a few details into the form controls, and click the 'Submit' button, after which the page iterates through each row, and inserts the data into a SQL Server table.But if the user ticks the checkbox for that row, this signifies that the page is to ignore that row, and NOT insert that row of data into the database when the user clicks 'Submit'. This works well, but there is a problem. If the user clicks 'Submit' and some of the values entered into the form controls are invalid (so, for example, the user didn't enter their name) then the page won't submit the data, and instead, shows an error to the user informing them of the values they need to change. But if the user creates three rows, for example, but decides to "ignore" the third row (by ticking the checkbox) then when the page posts back, finds some invalid entries, and re-shows the form to the user to allow them to correct any errors, I'd rather the page didn't render the third row altogether. After all, they chose to create three rows originally, but then decided that they only needed two. So it makes sense that the third row is not recreated.
But what seemed to happen was that objCheckbox.Checked was always returning False, even when the checkbox was ticked. Once the page had loaded, the table rows had rendered again, and the tick was present in the checkbox, so it's not like the value was lost on postback. But at the point I check whether the checkbox is ticked, it always returns False, rendering a table row that the user doesn't need.Does anyone know how to get round this problem? I've read lots of articles about the .NET ViewState, and the page lifecycle, but I've yet to find a solution that works. I simply need to be able to check if a checkbox is ticked before re-creating some dynamic controls. [code] But then I basically found out that you can't override a protected member with a public one.
VS 2005 Using A Status Strip To Notify The User About The Status?
Sep 1, 2009Here is my insert statement:
[Code]...
Now for a succesful insertion i want to notify the user about a successful save operation.....i.e,i want to display a message "Successful Save Operation"to the user. How to do this using the Status Strip?
Status Bar With The Current Browser Status Text?
Mar 20, 2009I've got the code to display the current browser status text in the status bar but i want it to display the name of my web browser aswell. Example: Dreamincode.net - (Name of Webbrowser)
He is my code for the displaying staus text.
Private Sub webBrowser1_StatusTextChanged( _
ByVal sender As Object, ByVal e As EventArgs) _
Handles webBrowser1.StatusTextChanged
[Code]...
Asp.net - If Status=false Then Update Should Change To Insert And If Status=true Then Update Should Be Update Itself?
Jul 3, 2009I have a gridview in which when I click edit, update, and cancel button comes. I have a variable named status. If status=false then update should change to insert and if status=true then update should be update itself.
<asp:TemplateField >
<ItemTemplate>
<asp:LinkButton ID="lnkEdit" runat="server" CommandName="Edit" Text="Edit">
</asp:LinkButton>
[code].....
Access Values Of Dynamic Controls Added To Dynamic Tabpages?
May 8, 2011i have created a dynamic tabpage and a dynamic tablelayoutpanel inside it then added dynamic textboxes and labels inside the tablelayoutpanel...the thing is , i am having a problem on how to access the value of those textboxes and labels and add them as new columns in the new table(tagpage) in mysql database, i can already create the table in the database but i cant add the new columns in it. heres the code for accessing the values of the labels and textboxes
error: NullReferenceException was unhandled....Object variable or With block variable not set.
sql = "alter table " & tbl_selected(counter) & " add " & frmMain.Controls("TLP_" & SecArrList_sp(counter2)).controls.item(SecArrList_sp(counter2) & "label" & counter).Text & " varchar(100) NULL;"
Dynamic LINQ Query Based On Dynamic Number Of Comboboxes?
Feb 5, 2010I would like to bind a DataGridView to a different LINQ query every time (in order to reuse the same form/DGV for different queries), like this:
[Code]....
but the "Qry", and the number of comboboxes, and their field names would change every time.
VS 2010 MDITAbControl Add Dynamic TextBox With Dynamic Webbrowser?
Feb 29, 2012Basically i have one TabControl with a form and 2 browsers within one form I have ProBlem To call the dynamic browser to navigate with dynamic Textbox.text
[Code]...
Dynamic SQL To Dynamic LINQ In .NET With MS SQL Server 2008?
May 24, 2010I need to represent the following query using LINQ:
DECLARE @PurchasedInventoryItemID Int = 2
DECLARE @PurchasedInventorySectionID Int = 0
DECLARE @PurchasedInventoryItem_PurchasingCategoryID Int = 3
DECLARE @PurchasedInventorySection_PurchasingCategoryID Int = 0
[code]....
Now, I know that a query in .NET doesnt look like this, this is my test in the SQL Design Studio. Naturally VB.NET variables will be used in place of the SQL local variables.My problem is this: All of the conditions after "WHERE" are optional. In that a query might be made that uses one, some, all, or none of the conditions. V.PropertyID and V.Value can also appear any number of times.In VB.NET I can make this query easy enough by simply concatenating strings, and using a loop to append the "V.PropertyID/V.Value" conditions.I can also make a Stored Procedure in MS SQL, which is easy enough.However, I want to accomplish this using LINQ.
VS 2008 Dynamic Timer In A Dynamic Form
Feb 19, 2010Ive managed to dynamically create a form, and dynamically create a timer, but i have not been able to create the timer on the dynamic form. Specifically, i need to be able to have the timer itself create another form with a timer. (I realize that this would create a new form every interval on the timer, that is what i want to do)
1. A way to add the timer to the dynamic form, and maintain the timer sub on my main form.
2. A way to create the whole thing over (dynamic form and timer) through the previous dynamic form and timer.
I was thinking i could use a collection/array to store the forms and timers, but i'm still having trouble figuring out how to add entire forms or timers into a list. (A timer is not considered a control, so i cant use a controlcollection...)
Heres my code;
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim frm As New Form
[Code]....
*EDIT* Btw, my idea was to use i as a variable that increases every time a form is created, then insert the form into the array, with i as the integer. i just need to know how to create a new form with a different name each time. (as with timers)
Dynamic ContextMenuStrips On A Dynamic Form?
Oct 15, 2009I have a form that i need to be 100% Dynamic. So it could contain 10 labels maybe 100 who knows.
When you hover over a label there will be a different contextmenustrip to appear for each and every label. So all the contextmenustrips are Dynamic and contain 1 option maybe 2 options even 3 or 4 up to the users settings.
My problem is not creating a handler for when the user clicks on the contextmenustrips options. The problem is knowing which one of the options for that contextmenu was clicked!!
Dynamic ToolTip For Dynamic Text Box?
Jan 11, 2012OK, I'm trying to display tooltip text for a dynamic edit box. Well, at least I'm trying to.
On my form, I've got a tool tip control which I've conveniently named ToolTip. My edit box displays OK. But, what I want to do is when the user hovers their mouse over the text box, I want the tool tip to display some text.
I think there are two problems that I'm having. I'm not convinced that I'm properly addressing a dynamic text box name. Ideally, I would want to be able to refer to the text box (but using a dynamic variable that will contain the prefix of the name). To hardcode, I would want to be able to achieve (not in this example but in theory): ABCDEFGt_0300.Text = "hello"
Dim controllerName as string = "ABCDEFG"
Dim t_0300 As New TextBox()
Me.Controls.Add(t_0300)
[Code].....
Disk I/O's Per Second?
Jul 13, 2010I'm interested in Windows performance especially the number of disk reads and writes per second. Windows knows for performance data. Does anyone know have to collect this data programatically?
View 13 RepliesGet Hard Disk Name?
Jul 21, 2010How would I find the letter for the hard disk? e.g C:
Because I know some computers have different letters insetad of C.
Also, on a slightly different topic (I didnt think it was worth starting a new thread for it), I need a program to start during the start up of the computer it is on, am I right in saying I need to create a shortcut (which I think is a .lnk file?) and then put that in the startup folder. I'm doing this in code, but I was wondering what information I need in the shortcut file.
Get The Disk I/O On Various Servers?
May 22, 2012I am using the following code to get the Disk I/O on various servers. For now I am just retrieving the DiskReadsPerSec to get a feel for it. The return data gives a uint32 for each drive on the server and a total. My questions is what is the time frame that this represents? Is this at the second that my code polls the drive or is this over the last few seconds or do I need to do multiple runs to get an average.
My intention is to build a graph for each drive so I wonder how often I need to poll the drive to get a acurate value.
Public Shared Function GetDriveIO(ByVal strip As String) As Boolean
Dim oConn As New ConnectionOptions()
Dim lnglist As New List(Of Long)
[Code]....
Get The Hard Disk Or CPU SN?
Apr 3, 2010I work with VB 2008 I need to know a main part Serial number such hard disk or CPU in the local machine?
View 4 RepliesLow Level Disk I/O
Feb 25, 2009I want to do low level disk I/O using Visual Basic 2008.Particularly, I want to do track/sector read/writes to a disk (or equivalent hardware)Also important is to discover number of tracks/sectors available.
View 1 RepliesGet The HDD Disk Drive Information?
Mar 3, 2010I am trying to get the HDD Disk Drive information from the DeviceIOControl(,,,,,) function with IOCTL_DISK_GET_DRIVE_LAYOUT_EX control code.
Here are the problems :
1. The DeviceIOControl function returns(as from output buffer) DRIVE_LAYOUT_INFORMATION_EX structure. Which contains some data types i am unable to get. I used. Uint32 instead of Dword. Long instead of Large_Integer.
2. DRIVE_LAYOUT_INFORMATION_EX structure contains a union declaration as mentioned on MSDN , HOW TO GET A UNION in VB.NET or vb 6.
3. Still when i tried declaring the data types as mentioned earlier gives an error (Value does not fall within the expected range.) executing the DeviceIOControl Method.
Link : [URL]
Calculate Size On Disk?
Oct 25, 2011I am trying to calculate the total size on disk of all files in a directory. However, it does not appear to be working.
Here is my code behind:
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim dInfo As New DirectoryInfo("C:WebsitesHKM3TempUpload")
[Code]......
Create A Disk From From A MemoryStream
Jul 6, 2011I'm working on a project in VB.Net (2010) where I'm extracting files from an Document Management System.The Files reside on the network, and information about the files are in a SQL 2005 Database and have been encrypted with the Encryption Stream (System. Security. Cryptography. Rijndael Managed)i have retrieved the file, and decrypted them, but I'm trying to find out how to write the stream back to a file.I know the file type (which is stored in a SQL DB)I can't find a solution in any of the VB files or the MS site.
View 2 RepliesDetermining The Disk Space?
Sep 5, 2009Im creating a program that auto starts with my computer. On this program im adding a section that states how much space i have left on the C: drive. So far i have 2 labels and a progress bar. in the top level i have the name of what the progress bar is, and the second below the progress bar states the amount such as this "430GB/740GB". i also want the progress bar to state the percent of how full this drive is. how can i do the following:
Determine the amount of drive space on C:
Determine the amount of free space on C:
Make free space a percent of all space. such as "30% full"
Find The Disk ID Of A Drive?
Nov 29, 2009i'm trying to list out the what to pick when using the perfmon counter, physical disk. when you look at it in perfmon, it shows for example, 0 C:, 1 D:. I see how to get the drive letters avaliable on the sytem.. how in vb.net to get the disk id. i want to get a listing of all the hard drives on the system, both their ID and the drive letter.
View 7 RepliesGet DVD Info From Physical Disk?
Jun 25, 2012I have seen numerous dvd playing apps that when you insert the dvd into the drive is displays the movie name. Im looking to implement something like this. I want to show a desktop alert showing the movie name when it has been put into the drive so the user can add it to the collection.
I have "googled" around for this and have found nothing on reading DVD info. how to get the dvd info from a drive?
Hard Disk Manufacturer Name
May 24, 2012I try to get hard disk Manufacturer name but can't figure out I tried whit wim but what I get is Standard disk drives and not seagate or samsung etc. [code] is there a way to get the manufacturer name by another way?
View 12 RepliesList ALL Files In A Disk?
Nov 21, 2009I want to get a complete list of all files on a disk, if i write code to list files in a folder, the web gives lots of examples how to do it, and for a folder (including sub folders) of tens of thousands of files, they all work. however, my disk has 250,000 files and i cannot make any method work.The My.Computer.FileSystem.GetFiles(FolderBrowserDialog1.SelectedPath, FileIO.SearchOption.SearchAllSubDirectories, "*.*") method runs for an hour and then crashes.the Directory.GetFiles(path,searchPattern, searchOption) throws an exception when it reached the system volume information directory.
View 5 Replies