Get A Single Form That Is Held In A Dictionary?
Jul 6, 2009
I can't seem to get a single form that is held in a dictionary(of integer, <Form>) to create instances passed 229 times.
For instance i can only open 229 instances of the same form. I open and close the form. So technically i open 229 forms and close 228. Any forms opened afterwards give a win32 exception. I clear the the dictionary key upon form close.
I have changed the dictionary declaration to (of long) but get the same issue.
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Dec 9, 2011
I wish to send a string held in a var to an IP address and Port number both also held in vars. I also wish to listen to a signals coming in on a particular port number so when particular strings are received I can trigger other transmissions.
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Feb 14, 2012
In Objective-C, I could create an NSMutableDictionary which could hold any types of values.
Here with VB.NET, I managed to make a Dictionary, but when I initialized an instance of it, I am asked for a specific value type. How can I enable any value types within one single dictionary?
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Feb 27, 2012
how to create a program that can access information held in an excel database and show it in a simple form.
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Jan 25, 2010
I want to group items from a linq query under a header, so that for each header I have a list of objects that match the header title. I assumed the solution would be to use ToDictionary to convert the objects, but this allows only one object per "group" (or dictionary key). I assumed I could create the dictionary of type (String, List Of()), but I can't figure out how to write it. As an example I have written a simplified version below.
[Code]...
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Mar 22, 2011
I have a few problems i need to solve. Firstly, I am looking for a piece of code i can use to display a picture from a bank of pictures. It will work on the basis of generating a random number and loading a picture that corresponds to that number.
i.e. Dim RandNumber As Integer
Dim RandClass As New Random
RandNumber = RandClass.next(1, 10)
If RandNumber = 1 Then
Picturebox1.image = picture1
[Code]...
Secondly, can I then use subsequent picture boxes to display pictures from the same bank of images, without displaying the same image? Finally, I then need to be able to click the picture or a button beneath the picture to select it as an answer to a question and then the whole process starts again.
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Apr 27, 2009
I have created a class with a function in it. I have a collection of data I want to pass back. I tried an arraylist first. Now I am trying to use a dictionary. My problem is that it creates the dictionary ok, but I am only get the last row of data from my
Function GetWeldAuditInfo(ByVal ResourceId
As
String,
ByVal VendorId
[CODE].........................
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Apr 16, 2012
I have the following object:
countDictionary As Dictionary(of Category, Dictionary(of Date, Integer))
The Class has a Enumeration Property. For the purposes of demonstration, I'll call it MasterCategory.I have been trying to get out an object that looks like the following:
groupedCountDictionary As Dictionary(of MasterCategory, Dictionary(of Date, Integer)
The best result I could get was:
Lookup(of MasterCategory, Dictionary(of Date, Integer))
From:
countDictionary.ToLookup(Function(o) o.Key.MasterCategory, Function(o) o.Value)
Which results in a IEnumerable (Of Dictionary(of Date, Integer)) for each MasterCategory value.However, I need that IEnumerable of Dictionary flattened to one dictionary with all the integers summed (total counts) for each date. I then tried to use various selects and group bys (from numerous stackoverflow posts) to "flatten" it, but my efforts have fallen short.
Current Code
[Category Class]
- MasterCategory As Enum
- Name As String etc
[code]....
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Sep 5, 2011
Well i've been trying to make something run with a lot less code(and faster) but it seems with SendKeys some things are getting lost(or discarded) by the program, its only the arrow keys as I try & make it complete a pre-defined maze to see how fast it can be completed.
If I use SendKeys("RIGHT 8") for example the maze usually only moves a few times, sometimes maybe only 1.
Also I looked up how to hold a key down/simulate it but it's not working for the arrow keys(untested on other keys).
The only way i've made it work is delays, decently delayed like 200ms & it's a huge maze but if i hold a key manually I can go much faster yet sendkeys method can't go that fast using individual presses this is why I want to simulate a holding down action.
---it must be working xample code I can make it work for my purpose if it works like on button click, etc....but I tried copying full (supposedly working) codes before & they never worked for me/my key, xample cause i've looked & tried hard(with only failing results).
MORE INFO:Also I tried SendKeys.SendWait() which is meant to wait for keystrokes to be processed & that didn't help either so my best guess is the keystrokes are processed but discarded(like a movement delay code that doesn't queue movements but rather ignores extra movements)
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Jul 7, 2010
I have created a Dictionary class (MyDictionary for the example). I am currently trying to pass MyDictionary into a function, filter it into a new instance of MyDictionary and pass this new instance into another method. When I am attempting to create the second instance from the filtered first instance of MyDictionary via Lambda Expressions and the ToDictionary Method, I am getting the following error:
Unable to cast object of type 'System.Collections.Generic.Dictionary`2[System.Int32,System.String]' to type 'MyDictionary'. I have simplified the example and recreated it in LINQPad and am getting the same error.
Here's the simplified version of my code:
[Code]...
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Jan 6, 2011
I use VS2005 and I have just started working with the dictionary in particular the Dictionary.ContainsKey method. At the bottom of the page in the msdn library it says the following in the community content How to make sure that Contains functions properly.
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Jul 27, 2009
Ok I have a project which has a MDI parent. Inside the parent I have multiple isntances of a form load(frmLine1t5). When my program loads it will load a different form(frmSelect) and if I manually load a different form(frmRetests) I can put frmSelect on top of frmRetests and bring one another to the front if it's clicked on(without using the bringtofront method)However as soon as I load a single instance of frmLine1t5 I immediately can no longer bring ANY form loaded into the MDI parent(before or after frmLine1t5 has loaded) to the front. I can only bring them to print IF I use .bringtofront method
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May 28, 2009
In my ASP.NET(2.0),VB.NET Project,around Around 150 people are using this site inside the companyFrom these 40 Forms ,Can I to publish one Form (Visitor.aspx) to another site
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Feb 6, 2011
I have a sim card reader, that is a usb-to serial device. It has a sim card inserted. what i need to do is access that sim card to get the data, phonebook and sms for example. I CAN connect to the reader but i cannot send any commands or recieve any data.
What are the commands i could use to access data held on the device. The chipset is pl-2303
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Apr 27, 2009
I have a little problem with my program, Boot Animation Previewer.Firstly, it loads the .zip file and extracts the boot animation in a folder called Temp. If there are existing files in the Temp folder it deletes them. But, once the boot animation is previewed, you can't select another boot animation, until you restart the application, because it gives an error, saying that the program can't delete the images, because the process is using them
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Mar 9, 2012
I need to run an If Statement that will check a few conditions.
Basically I want to get it to check a value held in a variable "Temperature" and if the value is within "1" eaither way i.e. +-1 of the value held within the variable to then to output a text string to Label200.Text Else if the condition is not met then out put another text string to Label200.Text.
Example:
Say if Temperature value held in the variable Temperature is 8.5 the if statement checks to see if the DewPoint value is "between" +-1 of the temperature value. i.e. 7.5 to 9.5 as well as the value in Humidity is equal to or greater than 90 and Pressure is Less than or Equal to 1013.25 then the conditon is met, else the conditon is not met.
I have put some code together below in NotePad++ to see if what I am trying to do is the correct way to go about it (note I have not yet tried this code in VB.NET as I don't have it at work).
pass comment on the code and if it is wrong explain what I should do to get it to work.
Dim DewPoint as Single
Dim Temperature as Single
Dim Humidity as Single
[Code]....
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Jun 24, 2011
I have aproblem with WebBrowser Naviagtion.I would like to navigate to URL that is held as a String in an Array...IF RadioButton.Checked Then WebBrowser. Navigate (Array(0, 0))
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Jan 24, 2010
I am writing a VB.NET application which needs to extract data from an XML document. The Dataset.ReadXML function would be suitable, if the XML document was held in a disk file. However I would prefer the XML document to be passed via a string property of my class object, not as a disk file.
Is there a way to make the ReadXML function take its input from a string instead of a file ? If not, are there other functions which can be made to parse XML which is held as a string.?
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Aug 1, 2011
Firstly, it loads the .zip file and extracts the boot animation in a folder called Temp. If there are existing files in the Temp folder it deletes them. But, once the boot animation is previewed, you can't select another boot animation, until you restart the application, because it gives an error, saying that the program can't delete the images, because the process is using them.
My question is: how to stop using the images? I've tried to dispose the form that loads the .zip file, but with no success.
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Nov 21, 2011
I'm trying to Export a RDLC report into a PDF file and email it as an attachment with the click of a button.
My issue is that I get A required privilege is not held by the client error in the following code.
On this line Dim fs As New FileStream("C:\TEST", FileMode.Create)
I Have Administrator Privileged on a Vista Machine.
Dim warnings As Warning() = Nothing
Dim streamids As String() = Nothing
Dim mimeType As String = Nothing
[Code]....
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Feb 2, 2010
I know how to send keys using Sendkeys.Send("{RIGHT}") I even know how to use Send keys In a timer, to repeat the key press... But it's just a key press, and it lets the key up. So If I tried to put sendkeys.send("{RIGHT}") under a Timer, then it will press/release the Right Key. I don't want that. I want to HOLD THE KEY DOWN. Here's Some Code, that I know how to do that Simulates a Mouse Click, Left Down, AND Left Up. Mouse Click. Ok...? So here's some example code of how to Send a simulated Mouse Click.
EXTREMELY EASY, BUT EXTREMELY POWERFUL CODE. Simulated Mouse Clicking.
Public Class Form1
'To allow to detect keyPresses. latter on in your code.
Private Declare Function GetAsyncKeyState Lib "user32" (ByVal vKey As Long) As Integer
[code]....
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Oct 13, 2011
suppose I have variables named A1, A2, A3 ... B1, B2, B3 ... Z97, Z98, Z99. I have a certain operation I want to do using each one in turn. I CAN write a line of code for every single variable, but this will get pretty tedious. I'd prefer it if I can make a function that takes the letter and the number as arguments. So, if it gets the arguments "E" and "10" it will perform the operation on variable E10. What is the syntax for this? say a simple operation such as: result = E10 * 3 Is the syntax any different if I use constants instead of variables?
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Feb 8, 2012
I have a number of files that are generated in a function defined as:[code]These files are immediately printed and the files are automatically saved to a directory; the files themselves are not for use by the actual software users. I timestamp the files to keep them uniquely identified for auditing purposes.I've now received a requirement to email some of these files externally to the company, and someone has complained that the current filenames are not user-friendly.So, I tried copying the generated file to a temp directory, with a friendlier name, emailing the friendlier file, then deleting it, leaving my audit trail intact, like so: [code]This throws a System.IO.IOException on the line System. IO.File. Delete (friendly FilePath) because the file is still in use, after it has been emailed.I've taken out the email code, which makes the copying and deleting work fine, so it's apparently attaching the file to the email which causes the problem.I've also tried breakpointing before the delete line, waiting five minutes, confirming the email has been sent, then advancing the code, but the same exception is still thrown.
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Feb 24, 2009
I'm trying to make a database program in VB 2008 and have come across a problem with a query that I'm not sure how to solve. I have a combo box which contains names of teams that are held within the database, when a team name is selected I have 4 queries that will separate players (in that team) by their position, using this information I will then be able to display information about the players in a collection objects so that it can be edited and what not.
My problem is that I need to be able to refer to the records in the query so that I can assign a players details to objects on the form, I've used a piece of code to do so that I used previously to select individual records from a table, however when I click on a team in the combo box it throws up the error: "Could not format node 'ClientQuery' for execution as SQL.". Not being a particularly experienced VB programmer this error doesn't exactly mean too much to me, although I am not exactly sure of another way to tackle the problem.
The code for this query is:
Dim GK(3, 2) As String
Dim c As Integer = 0
For Each Record In GoalkeeperQuery
[CODE]...
All the fields in the query are strings. If this is not enough information I can post the query I used to select the records in the query used above or anything else that's related.
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Sep 10, 2011
I am trying to implemented a custom dragging operation to sort panels.
I assign an object to a variable in the MouseDown event and track it's relative position by examining the MouseMove event of the neighbouring panels as I drag the mouse over them.[code]...
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Sep 2, 2011
I have a picturebox set to move when the arrow keys are pressed. How do I prevent it from continously moving if the arrow key is HELD DOWN. I want to make it so the user has to press the key each time manually to move the picturebox.
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Mar 15, 2007
I have windows application and a form. If I open a form named "DetailForm" from main form named "Main1" by clicking the button, it should open only once. The problem I am having is, it is opening many instance of the form every time you click the button.
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Jan 19, 2011
I then have an iteration (For Each loop) which lists all of the OUs on our site (set by the filter property). The issue here is within my treeview it lists everything without mimicing the AD structure we have.When searching on this it seems i have to change the search path to be one below the current OU and add it to my child node. I believe the search path is held in my RootDSE??, but when i look for the distinguishedName and try to pass that in i receive an
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Jun 29, 2009
Me.Close()
MDI.Show()
Me.dispose()
MDI.Show()
i am using this code but in both condition whole wpplication gets closed i just want to dispose that single form what to do?
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Dec 9, 2009
I just like to know if how can i do single form instantiation upon loading my Form..upon loading my MainForm it automatically detect if that MainForm is still exist..ive try putting my code in the contructor of my MainForm..i check through the process in the task manager if that MainForm is still exist..but i think this is not the good idea bcoz..the MainForm takes several seconds to appear..and i think this is bcoz i loop through the process.
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