Use Pictureboxes To Represent A Variety Of Items?

Jan 14, 2011

I'm pondering a design that will require zooming. My intention was to use pictureboxes to represent a variety of items, and I have the code written to draw on those pictureboxes, as needed. However, there will be many pictureboxes on the form at any one time, though only a portion of them will be visible. That shouldn't be a problem, necessarily, as there isn't any issue with having controls that are not on the visible area of the screen. My issue is that when the user rolls the mouse wheel forward or back, the image will have to scroll in or out, which means that the location and size of the pictureboxes will have to scale relative to the point where the mouse is located.

Technically, this would be more easily accomplished using graphics directly, since I can use ScaleTransforms and...uh...one other, to do the scaling. However, I would prefer to stick with the pictureboxes because I will be doing lots of drag and drop work with them (dragging things into and out of them), and that code is already written. If I were to change that to use rectangles and circles drawn dynamically and scaled dynamically, I'd have to use some kind of hit testing to figure out which object I dragged or dropped onto, and where. Therefore, switching away from pictureboxes would require a fair amount of recoding. There really shouldn't be a problem scaling and translating the controls on the form, but rather than writing the math behind that, I was wondering if there were any built-in tools that will do it for me or will help with the process.

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Create A Virtual Piano Using Pictureboxes To Represent Keys That Play .wav File Versions Of Notes

Nov 5, 2011

I'm trying to create a virtual piano using pictureboxes to represent keys that play .wav file versions of notes. I've gotten this to work fine; however, I'm having trouble with two features I want to implement.The first feature is to be able to save what I play in a text file. I thought I could use this code but I'm getting an error. [code] The second feature is to play random keys using the random class. Is there any way I could store the pictureboxes in an array and then use the random class?

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Take Values Of A Variety Of Controls In A Panel

Mar 20, 2012

I face a problem trying to take the values from a variety of controls that I create dynamically using some data from my database.For example I have a treeview and if I click on the first node I create a textbox, a datetimepicker and a combobox.When I click on the next node I create a datetime picker, and two combobox.etc.the problem is that when the user will press a button I want to take the values from these controls and use them to create a report.[code]but how I can get the value, the text, or the selectedvalue.Each control is different.

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Scan In Multiple Pages From An ADF On A Variety Of Scanners

Dec 14, 2011

I am attempting to scan in multiple pages from an ADF on a variety if scanners (Mostly MFC's). I have been fighting this for about a week with not much success. I do have it working under twain, however, each page is a separate tif file. I would like to use WIA and have them combined. I found some code, but it was written in a previous version and generates an error when I run it in 2010.The error is :Value does not fall within the expected range. This is the first part of the code for selecting the wia device. It seems to be working ok.

[code]...

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Write A Method That Is Called From A Variety Of Forms At Load?

Nov 29, 2010

I'm trying to write a method that is called from a variety of forms at load. So with a Form1 load event I would call the following:

Dim testpoint As New Point(10, 20)
DrawVerticalStringFromBottomUp("Hello", testpoint, Me)
The DrawVerticalSTringFromBottomUp Method is as follows:

[Code]....

When I call the code at a form's load event, nothing happens. When I call it from a button click after the form has loaded it works! I know this should be called from the paint method, but that doesn't suit my purposes.

way to make this work from the form load event?

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VB - User Substitutes Name On Query - Get The Data Set To Return Different Output Given A Variety Of Inputs

Nov 19, 2009

So, I run a select statement in SQL and then it has something like " where clientName = 'John Doe' " I can generate a datagrid or dataset off the SQL statement, but it will only be good fro one client...... I would like to be able to populate a dataset/grid using the select satement and then having something like a combo box of names the USER can choose. Then the user selects the name and the datagrid is populated with that clients info or w/e........

[Code]....

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Inheritance And Variety Of Data Structures Including Queues, Lists, Arrays, Or Stacks In A Windows Forms Application

Jun 27, 2012

I'd like to give a homework assignment to a person learning VB.NET. I'd like it to use basic inheritance and a variety of data structures including queues, lists, arrays, or stacks in a windows forms application. I was thinking of a pizza-ordering application. This would allow them to utilize some basic inheritance and practice using .NET UI elements.

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What Does & H57 Represent And How To Translate It For C#

Jun 1, 2011

I'm trying to convert old VB.NET code into C# and I'm not sure about the current line and what it means really.

[Code]....

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How To Represent Unicode Chr Code

Jun 29, 2010

I know you can put unicode character codes in a VB.Net string like this: str = Chr(&H0030) & "More text"..I would like to know how I can put the char code right into the string literal so I can use unicode symbols from the designer view.

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Represent Backspace In A String?

May 9, 2011

Below is the code I am using to restrict user from entering any other characters except for the predefined ones. But using my code I cannot hit backspace.

How to include backspace also ?

Dim s As String = "0123456789$"
If s.IndexOf(e.KeyChar) = -1 Then
e.Handled = True
End If

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Store And Represent Data?

May 31, 2011

I'm creating a program that outputs Quotations (and other information relating to these 1. What is the BEST way to read/write from a database (I only really know how to use Access but if XML or SQL would be better, I'm willing to learn). The database needs to be stored and accessed from the same state every time that the program opens. I've tried multiple different ways, both through DataAdapters (in code) to doing it through connecting the database through the Visual Studio GUI. Neither have seemed to work. Other people have told me that using DataAdapters and such aren't the best way, but no one has been able to tell me what this 'best way' is. Also, I need to somehow be able to link pictures in the database - apparently it's not easy to do in SQL?[code]...

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Convert Numeric Value To Represent 0 To 1024

Nov 19, 2010

I am reading a pot that has a range of 1000 to -887.I need to convert that numeric value to represent 0 to 1024Where 1000=0 and -887 = 1024.

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Declare Textboxes Or Labels That Represent Them?

Oct 5, 2009

I have a parcel post assignment, and i have three textboxes that represent height, width, and length. here are my questions1. how do i decalre them as integer? do i decalre the textboxes or the labels that represent them?2. how do i multiply all three together and multiply the total by 4pence and add 20p?

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How To Represent Data In A Tabular Format

Feb 8, 2012

i can retrieve the data from the DB and put it in a vector and then, vector in a JTable, to display data in a tabular format in java, all i wanted to know is there any similar way in vb dotnet?

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Set Up A CLASS To Represent A Data Stream?

Apr 1, 2009

I'm trying to set up a CLASS to represent a data stream.This is a newbie question so if the answer is obvious, please excuse me.Several of the data items are multiples which I would normally represent as an Array element.For example, in the code below, the element SolarNameplate has up to 10 instances, so I'd like to use array notation.I get errors, and it doesn't work, so I assume I can't do it like below.

QUESTIONS : 1 - is it possible to use an array element in a class ?

2 - is there another way to achieve what I want ?

Public Class SM1PS01
Private _Projid As String '... name or number of project
Private _LogoFile As String '... file containing customer logo[code]...........

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Variable To Represent Generic Dictionaries?

Mar 2, 2010

In a tic tac toe game I'm working on I have 2 dictionaries (plyrPairs and cmptrPairs) In the program there is a procedure that is used numerous times. The procedure varies with the dictionary that it calls. I'd like declare a variable in a sub procedure that will represent these two different dictionaries. Here is what I have:

Here are the two enumerations:

vb.net
' Assign values to player pairs enumeration
Private Enum plyrPairsList
empty = 0

[Code].....

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Pictureboxes And Ovals, Get Ovals To Be In Front Of Pictureboxes?

Jun 20, 2012

I am creating a photo hunt game for grades 6-9 in summer camp. I want them to alter an image in paint then create two picture boxes. I want to put in ovals with no fill color to mark the differences in the picture but VB.net won't let me send the images behind the ovals.

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Data Structure To Represent Bookable Timeslots

Apr 27, 2009

What suggestions do people have for a timeslot data structure? I have a number of activities and I'm planning to display them in a datagrid with days as columns and timeslots as rows. This suggests to me a timeslot data structure with 5 properties for the five days (the columns) for every value I want to use e.g. a timeslot ID and the number of slots left.

So.

Property Day1ID
Property Day1Slots
Property Day2ID
Property Day2Slots
Property Day3ID
Property Day4Slots
etc

Then each TimeSlot structure would be for a specific time. say 9:00 and another for each hour after that. Then I'd have a list of timeslot structures that will auto bind against the datagrid. I'm exploring new ground here and as you can see I'm not very clear on what/how to do it?

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Each Button To Represent Numbers Like On A Calulator Of Keypad

Aug 10, 2009

I am creating a Point of Sale software for a small company I work for. I am a beginner with Visual Studio and have just stumbled my way around. I have completed the GUI and would like to start assigning code. The problem I am having is assigning numbers to a keypad on the screen. I would like each button to represent numbers like on a calulator of keypad. When these are pressed they need to input into TextBox2.

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Handling Disconnects Of Hardware In Classes That Represent Them

Jan 26, 2010

I'm working in VB.Net developing data logging software. I've developed classes implementing a common interface that works with many of the data loggers my company produces. These classes handle the low-level hardware interfacing and expose common methods for accessing the data logger's records.

[Code]...

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Hexadecimal - Parse The Byte And Represent It With Two Characters Instead Of One?

Mar 25, 2010

i am working with serial communication in vb.i need to know how to get &h1 to be &ho1 to represent the byte o1 in hex or 0000 0001 in binary.i cant remeber how to parse the byte and represent it with two characters instead of one.

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Forms :: Creating Checkboxes In A Panel That Represent The Seats?

Jul 6, 2011

I have a theater seating project. I am creating checkboxes in a panel that represent the seats. Each of the rows has a label on it, giving it a row number.When a user clicks one of the check boxes, I need to be able to determine what row the seat was that they clicked on. I then use the row number to determine the price of the seat. I am stumped!! I can't seem to figure out how to get the row number associated with the seat. Here is my where I am configuring the seats:

Private Sub ConfigureSeating()
intTheaterID = CInt(frmTheaterTickets.cboTheater.SelectedItem)
Dim strSQL As String

[code].....

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How To Format String To Represent Date In Specific Layout

Apr 28, 2009

I'm trying to format a string to represent a date in a specific format using the Format function but it's return odd results.
Here's an example:
Dim s as String = "01/01/2000"
Dim result as String = ""
result = Format(s, "dd-mmm-yyyy")
result equals "dd-mmm-yyyy" (the format string) very strange.

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Make UserControls To Represent Components Of A Color Formula?

Mar 9, 2009

I have a TableLayoutPanel that is 1 column wide. In it, I make UserControls to represent components of a color formula.When a user chooses a formula on the left, I call "TableLayoutPanel.Controls.Clear" and then using the data from the formula, set the number of rows and create X many new user controls in a loop and TableLayoutPanel.Controls.Add them.

The problem is, if one keeps this screen open and selects through roughly 60 to 70 different formulas, eventually, without warning, the program will crash in an unhandled exception: Error creating window handle. (There is no debugger breakpoint)What's causing this? Is it a disposal problem? Should I be doing something other than TableLayoutPanel.Controls.Clear? Would you handle building the objects differently? I'm including a screenshot of the screen in question (you can see the usercontrols vertically on the right) and the error box that comes up.

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Represent More Than One Value In Either A Variable Or Single Index Position Of An Array?

May 13, 2010

I have a very large number of tables with data in the following format:

A X Y Z
1 0-2 0-13 0-1
2 3-5 14 2-4
3 6-9 15-16 5-10

In other words, there is a variable (call it A) with a single value that corresponds to a range of values in the other variables (call them X, Y, and Z).My program needs to accept user text input of values of X, Y, Z, etc. and then match each to the corresponding value of A.Example: User enters 4 in the X text box; program determines that if X=4, A=2.Again, we're talking about tables and tables of data in this format. Unaware of a better method, I have been using arrays.

Example:

Dim a() as double = {1,1,1,2,2,2,3,3,3,3...}
Dim x() as double = {0,1,2,3,4,5,6,7,8,9,10...}

Note how I had to artificially deal with variable A so that the index of each score corresponds to the index of the matching X variable.It is this modification of the variables that is taking forever. There has to be a better way! Hypothetically, what I need is the ability to do something like this:

Dim a() as double = {1,2,3,4...}
dim x() as double = {0 to 2, 3 to 5, 6 to 9...}

Is there a way to represent a range of values at a single index of an array, such as my hypothetical example above? This would save me hours of re-shaping the data to make the arrays work.

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Clone Icons In A Folder And Represent The Files In A Listview On A Form?

Jun 16, 2009

I have a program where I'm trying to clone icons in a folder and represent the files in a listview on a form. I've tried using msdn, google and F1 help to figure this out, but I don't seem to be getting it.Here's the code I have so far, but I'm getting error that object not set to an instance of the object.

[Code]...

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Why Are Numeric Values -1 And 0 Used To Represent Logical Values TRUE And FALSE

Mar 11, 2010

I'm not sure this is really the right place for this question but I couldn't find a general programming forum.Why are the numeric values -1 and 0 used to represent the logical values TRUE and FALSE?

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Drawing The New Pictureboxes?

Jun 16, 2009

what i'm trying to do is make sort of a picturebox game. I have a picturebox name p1 that i got to move with the arrow keys on the keyboard. What I was tryna do next was to have it so that whenever I pressed the spacebar on that a new picturebox would be created, originate from p1's location and then go up 5 pixels at a time. so here's my code that i tried;

Dim Loc As Point
Dim shot2 As New PictureBox
If e.KeyCode = Windows.Forms.Keys.Space Then
shot2.Visible = True

[code].....

I have that under the keydown event by the way. So even thou vb didnt have conflicts with my code. But when I press the spacebar nothing happens.

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Gap Between Pictureboxes In A FlowLayoutPanel

Jan 27, 2011

I want to create a chess table, and I've made one with a FlowLayoutPanel and 64 PictureBoxes but I have a little problem. After i add the PictureBoxes I hava a gap beetwen them and I don't want to have it, i've tried 2 posibilities but nothing, I will put an exemple from my code

Private Sub init_table()
Dim color As Integer = 0
Dim boundX = 0

[Code].....

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Overlapping PictureBoxes?

Aug 20, 2009

I have a game where I want my character to go over the PictureBox but he goes under it. How can I fix this?

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