.net - Add ProgressBar While Making Operations?
Feb 10, 2012my update script in VB.NET, i'm making some stuff, and I want, while all funcs are executed, a progressbar to be displayed? How to do that? Here is my execution sub:
[Code]...
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Making ProgressBarRenderer.DrawHorizontalChunks Work Like Standard ProgressBar
Mar 28, 2012Is there a way to make ProgressBarRenderer.DrawHorizontalChunks actually work the same as the standard ProgressBar rendering?
If you create a Class that Inherits ProgressBar and override the OnPaint event then you have to render the Empty ProgressBar and it's fill% manually. This pretty easy with the ProgressBarRenderer. However, the DrawHorizontalChunks function is ugly compared to how a standard ProgressBar renders itself.
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
ProgressBarRenderer.DrawHorizontalBar(e.Graphics, e.ClipRectangle)
ProgressBarRenderer.DrawHorizontalChunks(e.Graphics, New Rectangle(0, 0,
[Code]....
I also have a second more minor issue in that I Shadowed the value property (for various reasons), so PerformStep (which then has to be Shadowed to keep the Value property in check) causes it to increase in blocks rather than smoothly growing between the two Values (old value growing to old value + step); the only solution I can see is to extend the code in the Shadows Sub PerformStep code to move the Value property gradually between the old and new values.
Make The Progressbar Look Like The Progressbar In Xp When Use Win7?
Dec 21, 2009in vb 2008 or higher :how do i make the progressbar look like the progressbar in xp when i use win7?
View 3 RepliesDesigning Software - Making A MPC Sampler - Drum Machine - Making A Sound Directory ?
May 16, 2012I'm a huge music person (got my own lil record thing going) but I'm wanting to design a program that would make music in my way. I have a decent amount of background knowlege of Visual Basic and Java I'm just wondering how could I execute this whole project. The Project is making a MPC Sampler. MPC is a drum machine; a machine with buttons that once you press it that it will play a sound from a drum (ex: snare, kick, tom, ect.) . So I would want to make some pads on my program that each have their own sound. Total of 16 pads. Which the design wouldn't be hard to make nor would the functionality of it having the play back sound (in my opinoin it wouldn't be hard atleast). But the thing is I wanna map out these pads to number keys on the number pad or keyboard. I'm not so sure how to do that. But that's all the easy stuff...
Also finding information is making a sound directory. What I mean by this is that I want to make a User Interface that will open up a file directory of sounds and the user can select what "kick" or "snare" sound he may want for the kick or snare pad. I don't know how to do that or even know what to search; neverless I don't know if this whole project idea is a good idea for Visual Basic or another programing language.
Also LATER ON I am wanting to add a record and export function that alows users to..well...record and export their beat or instrumental ha. That doesn't seem too too complex (mainly due to the fact that all it needs to do is record the users key strokes and then show them and play the sounds, but obviously it would get more complex than that.)
Here is an image of one of many MPCs but one with a directory - [URL]
Add Operations From A Listbox Into A Timetable
Dec 19, 2011I'm new in VB.net but I'm trying to make application (planning-game). The game is about showing students the planning 'complexity' of a operation room in a hospital. I created a listbox which randomly shows 5 operations. But now I would like a function which makes it possible to add a selected operation to a timetable. The timetable has blocks of 30 mins (example 08:00 - 08:30, 08:30 - 09:00 etc..). This because 1 type operation takes 1 hours and 1 takes 1:30 hours. Now I have given the operations a value by using a label. [code]
View 1 RepliesImproving The Assigning Operations Of .NET?
Dec 10, 2009I have an idea about improving the assigning operations of VB.NET (maybe other .NET languages too.) It is similar with "With ... End With" block:
[Code]...
So we don't type "Some Text" every time. Do you think does this idea work? Maybe in the future we can see something like that?
Listview1 To Listview2 After Some Operations?
Jan 6, 2012Ime1 = ListView1.SelectedItems(0).Text
ListView2.Items.Add(Ime1)
If MkCal1 < 0 Then
ListView2.Items(0).SubItems.Add("Nepoznato")
Else
[Code]...
The problem is when I click the next time to button, listview2 add only first rows from listview1
Make The Operations Run On Another Thread?
Sep 13, 2009I have an application in which I am running a separate thread.
Dim thread As New System.Threading.Thread(AddressOf Main)
thread.Start()
However, the thread makes reference to an textbox named Output, and it generates this error upon execution:
System.InvalidOperationException was unhandled
Message="Cross-thread operation not valid: Control 'Output' accessed from a thread other than the thread it was created on."
Source="System.Windows.Forms"
(message shortened for space)
How can I make the operations run on another thread, but still use the Output object? I cannot call a subroutine to do that for me, as it generates the exact same error.
The method called is AppendText, by the way.
Operations On The Second Child Node?
May 23, 2010I have 2 child nodes under a particular node. I want to do operations on the second child node. The code goes like:
Dim pChain As XmlNodeList = pChainDoc.ChildNodes
Dim processName As String = ""
For Each pNode As XmlNode In pChain
processName = pNode.SelectSingleNode("//Name").InnerText
[Code]...
Used Them In VB6 For Database Operations MsAccess?
Dec 22, 2011The following commands I used them in VB6 for database operations MsAccess which are, kindly DataBaseDataSet corresponding commands in VB10?
- Data1.Recordset.FindFirst query
- Data1.Recordset.NoMatch
- Data1.Recordset.MoveLast
- Data1.Recordset.AddNew
- Data1.Recordset.Edit
- Data1.Recordset.Delete
- Data1.Recordset.Fields("nome campo") = dato
- Data1.Recordset.Update
Using System.IO Namespace For FTP Operations?
Aug 19, 2010I have a few syncing routines that I'd like to use for FTP uploads. However they all use the functions in the IO namespace, and I was wondering whether I could use it to access distant files stored on an FTP server.
View 1 RepliesVS 2005 : Creating A Dll For XML Operations?
Aug 19, 2010I want to create a dll in VB.NET. The functionality of the dll is that it should include all the xml operations. Any application that uses this dll will just pass the node that has to be selected. The dll will accept the node name and search for the node in the xml file and return the details of the node. For example:if the xml file is like
<Node1>
<Node2>
<Node21 Attribute1 = "Value1" Attribute2 = "Value2" />
<Node22 Attribute1 = "Value11" Attribute2 = "Value22" />
[code]....
If the application which uses the dll calls a function named readNode(Node3) which is defined in the dll, then the dll should be able to retrieve all the details of Node3 including subnodes and theire attribute values and return it to the calling application. All the XML operations are to be done in the dll. The calling application will just call the method in the dll by passing the node name and it should be able to get all the node or attribute values.
VS 2008 Bit Conversion Operations
Apr 1, 2011In my API class I encountered a lot of times I had to Get/Set low/high order <something> of <something>. For example, get the low order integer from a long. I made a few functions for this: [code] Before I start using these functions permanently, I come to ask if it contains any bugs, especially because of the Unsigned/Signed issue.
View 15 RepliesAdd Calculator Operations To A List View?
Jul 22, 2011I have a basic calculator that Multiplies A and B to give a result of C.I want to be able to once multiplication occurs then to add the data to 3 column listview where in Colum 0 the value of A will be entered, Column 1 the Value of B and Column 2 C.For every operation done then to follow on the next row and so on until Memory Result button is pressed, which would mean the end of transfering the data.
View 1 RepliesC# - Bitwise Operations In Visual Basic .NET?
Jul 19, 2010I'm re-writing some old application in VB.NET to C# and ASP.NET 3.5. Everything is going OK but I have this problem - and, as the database will not be changed, I must find a solution to it.The old app saves the list o desired days (from Sunday to Saturday) in a byte. This is the way it do it:
If chkDaily.Checked Then
daysBitmask = 127 ' This is for a full week
Else
[code]....
C# - MessageBox-confirmation For Critical Operations?
Jul 22, 2010In my projects (WPF) I use System.Windows.MessageBox to show the user a confirmation dialog for operations that are critical, such as a delete-operation.
My problem is that if I specify as button value MessageBoxButton.YesNo, the user cannot use the escape-key to cancel the operation. IMO this is one of the most annoying things, a program can do, showing a dialog without the possibility to cancel/close the dialog through the escape-key.
Other possibilities are MessageBoxButton.YesNoCancel, but IMO this is confusing because it shows three buttons for only two operations . Or one can use MessageBox.OKCancel, but this is IMO not clear enough. In my dialogs I want to ask the user if her really wants to execute the operation. And for this, a simple ok is not appropriate. A yes (I want) is much better than an ok (go on).
How do you handle this? Is it a non-topic or do you think as I do and have an own MessageBox-implementation or do you know a possibility to extend the System.Windows.MessageBox-class?
Compiling Adds Cast Operations?
Jun 10, 2011On compiling a visual basic assembly, int32 variables are cast as int64 for calls to adodb methods that require int32. This results in a method not found exceptions at run time. The unnecessary cast operation can be seen when using reflector to inspect the site of the method call and is not present in the source code.To further muddy the waters when the code is compiled on my 64bit windows 7 machine all is well, but on a 64bit windows 2008 r2 the unnecessary cast is added.
View 1 RepliesCross Threading Operations In VB 2008?
Oct 27, 2010I'm using Visual Basic 2010I've created a ListBox and a BackgroundWorker using designerI want to change the location of listbox using backgroundworker but I get the error as follows:"InvalidOperationException was Handled by user code:"Cross-thread operation not valid: Control 'ListBox1' accessed from a thread other than the thread it was created on
View 10 RepliesCurrency Symbol And Arithmetic Operations
Jul 15, 2009Whats the best way to include the Currency Symbol, without affecting arithmetic operations for example. Lets say I have a Listview which has one column named "Cost" where ill be a Currency Value which needs to carry the symbol for example "BsF. 22,34" or "$. 22,34". Lets say I need to apply aritmetics with those values after whats the best way to store em or at least ignore the symbol when using arithmetic on them?
View 3 RepliesFile Operations Return Before Completion?
Jun 5, 2011The file operation calls are returning before they are actually complete, or the disk is being cached somehow. What is happening here is that a zipped file containing a number of files to be updated on the users machine has been unzipped and the filenames are returned in an array called 'newfiles'. Each actual file unzipped is temporarily preceded by a '~' character. We rename each existing file to <filename>.old, then delete all the old files. However, sometimes when the code runs, the old files are not deleted. The only explanation for this I can think of is that the second 'Fileexists' is not seeing the files because the filesystem has not caught up at that point. I've never seen this behaviour documented anywhere, though. It works fine when single-stepped.
For Each fn As String In newfiles
If .FileExists(fn) Then
'rename existing file to .old
delpath = Path.ChangeExtension(fn, "old")
.RenameFile(fn, delpath)
End If
'rename the new file to correct name i.e. remove "~"
[Code] .....
How To Use Arithmetic Operations For Visual Basic
Feb 7, 2011How do you use money in visual basic I know that I have to set nickels and divide by 5 and I am suppose to have another expression to the number. Then i am suppose to determine what change i would have left so that way i can determine how many pennies I have.[code]
View 1 RepliesListbox Will Not Selectitem During Drag Operations
Apr 6, 2011I have two listboxes one is the source listbox and the other is the destination. When I try to drag an item from the source listbox to the destination listbox it does not select the item that the mouse if over. I have implemented the mouseover event selection. It only works when I am not dragging also the mouseover events do not fire when dragging an item from one listbox over.
Private Sub DtlBox3_MouseMove(sender As Object, e As System.Windows.Input.MouseEventArgs) Handles DtlBox3.MouseMove
Try
' Get the current mouse position
Dim mousePos As Windows.Point = e.GetPosition(Nothing)
[code]....
Multiple Operations Using Single RecordSet?
Jun 18, 2012I have some task regarding do operations on database using ADODB in Vb.NET.regarding using the same record set multiple times?
I have tried on this topic just by closing the recordset after performing First operation and doing second operation e.t.c.
In ADO.NET we have "MultipleActiveResultSets=True" in ConnectionString for SqlDataReader.Do we have any property like this in ADODB?
Multiple Operations With A Simple Calculator?
Jul 31, 2011I've got the bulk of a calculator up and working, however it doesn't like multiple operations. For example 3x5+2= brings up 10 (i.e. 3+5+2) and even doing it in two parts doesn't help, if I enter 3x5= I get 15 then +2= gives me 32 (i.e. 3x5=15 15x2=30 30+2=32). Also I am getting trialing zeros in my command line I can't debug.Note that lblcommandline displays the whole function and lbldisplay just displays the current imputted number.
Public Class frmSimpleCalc
'This code is run when the program starts. Here we 'declare' or basically, define which variables we want, what they are and such.
'So, for this example, we need two variables. The number we are CALCULATING and the one which we will CALCULATE FROM.
Dim lCalcNumberMaster As Long 'The master number is the solution, the number stored and displayed when we click equals.
[code]....
QsRules Documentation Store Operations?
Sep 6, 2010I am programming hooks for store operations using the qsrules.dll but I do not find information about his variables you can help her obtain?
View 2 RepliesSyntax For Mathematical Operations As SIN , COS And TAN In VB 2005?
Jan 30, 2010What is the syntax for mathematical operations as SIN, COS and TAN in Visual Basic 2005?
View 1 RepliesWrite Simple VB Code With *= Operations
Apr 18, 2010I've designed a Arithmetic Calculator. I can get my additon button to work but not my multiplication button. My result total comes back as 0.
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Bitwise Operations, Combining 3 Bytes To Long
Dec 4, 2011I am trying to combine three Byte values to one Long value, like System.Drawing.Color.ToArgb() does.
I've looked up reference source code to find it and converted it to VB .NET:
Return CLng((CInt(red) << 16 Or CInt(green) << 8 Or blue Or CInt(alpha) << 24) And -1)
It works fine of course, but I don't really understand why alpha shifted by 24 is last, not first (so it would be in nice order 24, 16, 8). I don't really understand bitwise operations a lot. Also, this code snippet works for 4 bytes, which is redundant for me, I need just three bytes and I wonder if Long is still required when bytes are only three, wouldn't Integer do just fine in this case?
So, my question is, how do I rewrite this code to work with just 3 parameters? Do I need to use Long? And, I know this is silly, but is it possible to make byte shifting in order 16,8,0 instead of 16,8,0,24? It's really just aesthetics, but I am awful perfectionist.
Calculator - Getting My Devide And Square Root Operations
Mar 27, 2012I am having some trouble with getting my devide and square root operations working. when i hit say 10/2 all i get in my text box is "infinity"
'calculator program v.1.0
'programer: Michael Murray
'version: 1.0
'date: 21 march 2012
[CODE]...
Close The Access DB After Every Operation Of Keep It Open For Later Operations?
Nov 5, 2010I am working on a VB.NET project that grabs data from an Access DB file. All the code snipeets I have come across open the DB, do stuff and close it for each operation. I currently have the DB open for the entire time the application is running and only close it when the application exits.
My question is: Is there a benefit to opening the connection to the DB file for each operation instead of keeping it open for the duration the application is running?