I have created a service that updates dictionaries and outputs an xml file of the contents. It will do it fine first time round, but then I get the following exception when it tries to do it the second time
system.argumentexception an item with the same key has already been added
Is there anyway I can set it so that the dictionary contents are overwritten each time?
This is the code that I have to export data to Excel.
Dim oExcel As Object
Dim oBook As Object
Dim oSheet As Object
oExcel = CreateObject("Excel.Application")
oBook = oExcel.Workbooks.Add
[Code] ....
I can create and save the excel file, but I can't update the contents.
I am creating a windows service to save current username and logon time in a CSV file. But when I install the service, the file is just created, not details are written to it, and that file is set to read-only mode. what is the problem in my code?
My code:
Imports System.IO
Imports System.Text
[code].....
[Code]...
Loop 'Bottom of Main Program Loop 'Close the files when you are done with them
readerInputFileA.Close()
readerInputFileB.Close()
writerOutputFile.Close()
Else 'Path/file for one or both input files does not exist - message
[Code]...
The following code is excerpted from a larger procedure (the surrounding code is not relevant). why I am unable to get the second ContainsKey line to return True? Hint: try this on a worksheet with just a few populated cells to reduce looping.
For Each ws As Excel.Worksheet In Wb.Worksheets
Dim dic As New Dictionary(Of Excel.Range, String)
rngUsed = ws.UsedRange
[code]....
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].....
I have a situation where I need to display a Modal Window from a vb.net module and feed the contents to that modal form from the module.I am showing the form , feeding data to it from a class module and trapping the events in it using a timer control from the module.It works fine with Show() method but it doesn't with ShowDialog().If I used ShowDialog() then I was not able to continue with the code followed by it and not able to update any contents in the modal form.
View 4 RepliesI have a form called 'Bookmarks' that loads a bookmark file that contains a single word on one line. I have put buttons on the form for sorting this list, deleting items and changing the character case to lowercase, uppercase or Sentence Case.Now, deleting and sorting the list works fine, but when I try to change character cases,nothing happens. I started the debugger and found that my case changing code does work, but the listbox doesn't seem to update it's contents.I tried listbox.Update() and listbox.Refresh() but that didn't work either.
Here's my code for 'Set Case':
Private Sub setCase_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles setCase.Click
If bookCase = "default" Then Exit Sub
If bookCase = "lower" Then
[code]....
im trying to update the contents of a listbox by replacing the currently highlighted entry with a new value so far i have found the following to start off column1 is my listbox
[Code]...
but it keeps saying "Value cannot be null. Parameter name: value" for the first dim. how can i fix this? or this there another way to call the selected item without this complicated
Any VB2008 code that would allow me to download files through my program (like an update service), without it freezing, while displaying the progress like that of IE7, etc... using a progress bar, and that displays the size and speed?
View 4 RepliesI would like to know is there any way to update all service reference different projects to point when service URL is changed? I am using VS 2008.
Details:
There are several other C#.NET projects which refer to a web service projects inside the same solution.
I have made some changes in the web service project which requires references to these web services updated in other project inside same solution.
I am writing a vb.net client application that uses a web service to connect to the remote database.So far I am able to connect to the web service and read, add new and delete data from the database. I am having a hard time updating data.
I have a datagridview control that is bound to a dataset retrieved from the remote database using the web service.When a record is edited in the datagridview control, I need the dataset that is bound to that control to be updated and then that updated dataset to be sent to the webservice to update the remote database.
My client code in the btnUpdate_Click event
dim new_ds as new dataset = datagridview1.datasource
Dim es As New testwebservice.equipmenttracker 'the web service reference
dim msg as string = es.updateequipment(new_ds)
messagebox.show(msg)
Im trying to logically figure out how to update a record in a database through a web service to the database I have created this web method function but im stuck on completing this
[Code]...
I am using UltraGrid for inserting data in table. The problem is that i need to do insert,update, delete with web service. I am getting dataSet from web service and display it into grid but when I do some changes on the grid for example insert or update data, I need also to send new dataSet to web service so that web service do update data.
[Code]...
I am connecting to a web service that returns a dataset that I use as a datasource for a windows client datagridview.
Once a user has made changes to the datagridview record(s), how do I get those changes back to the connected dataset and back to the remote database.
I wrote the sql update function in the service:
Code Snippet from web service
<WebMethod()> _
Public Sub Update_equipment_repair(ByVal repair_id As Int64, ByVal date_entered As DateTime, ByVal date_sent_in As DateTime, ByVal date_returned As DateTime, ByVal damage_description As String, ByVal vendor_id As Int64, ByVal repair_description As String)
[Code]....
This displays the records perfectly and I figured out how to delete and insert records via web service.
writing updates from the datagridview back to the database.
I am writing a small windows client application that accesses data using a web service that returns datasets.When the dataset is returned, a datagridview's datasource is set to the dataset.
My question is, how do I write changes that were made in the datagridview back to the dataset and then back to the remote database.
[Code]...
Now the client snippet that connects to the service and lists the equipment
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]....
I have a very strange thing going on...I got a lot the CheckErrorStatus (Int32) error...and so I started to dig into my created functions. At the end I found what gave that error and so I added a new breakpoint on both computers where I want to run it (one is the developping computer, the other is the clients computer).
Developping computer : Windows 7, VS2008, .NET Framework 3.5SP1
Clients computer: Windows XP SP3, VS2008, .NET Framework 3.5SP1
the code of the function is a follows:
[Code]...
how it can that with the same input this function gives 2 differents (of which one is fault) output?
About the following code:
Dim vDeletedMessageSubject As String = oMessage.subject
oMessage.Delete()
System.Diagnostics.Debug.WriteLine("Message with subject: {0} deleted.",
[CODE]...
Why the different outputs?
dp.SyntaxHighlighter.ClipboardSwf = '/dp.SyntaxHighlighter/Scripts/clipboard.swf'
dp.SyntaxHighlighter.HighlightAll('3ab83152232341d6a1b8a6f4a3419500')
i have a Windows service that is hosting a WCF service through net.tcp and this is working great. I have also created a WCF service application. I am trying to add the net.tcp service reference to the service application. Then I add it to the GAC that goes ok but if I try to RegAsm the WCF service application to allow it to be called from Server.CreateObject I get the error:
Warning: Type library exporter encountered a type that derives from a
generic class and is not marked as
[ClassInterface(ClassInterfaceType.None)]. Class interfaces cannot be
exposed for such types. Consider marking the type with
[ClassInterface(ClassInterfaceType.None)] and exposing an explicit
interface as the default interface to COM using the
ComDefaultInterface attribute.
It does not work. I have tried to call it through a class library but this does not work either as the end point is not set correctly.
Could someone write me a Class structure for passing the data array below.
Function function1(Byval input1 as Double, Byval input2 as Double, Byval input3 as Double)
'code'
data.data1=value1
[code].....
I've got a little code that just reads and displays all the folders in a particular directory. What I want to happen though is for the program to pause 1 second after adding a new folder to the listbox. When I have Sleep(1000) it simply freezes completely.
Code:
Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long)
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code].....
Is it possible to create a VB function with multiple outputs. Note: I am not looking for an array containing me three outputs or a variable using delimitters
View 3 RepliesI a program that you can store stocks in,such information as name of the stock, price of the stock when you purchased it and so forth.This is stored in a file that is read and can be changed.My button that displays the information is giving me some problems as I have it setup and it will read my original file but when I add files its not going to display the new files.I need a way to make it output to my list box the new files as well as the old ones.right now my listbox outputs 5 lines, and each line has 5 records now the amount of records per line will not change but the number of lines I have will.I cannot pre write lines for something that has not happened, and I am stumped on how to fix this problem..
I am still learning and new to code so for me to write code that writes other code seems like some fantasy out of the terminator so I am sure there are much much simpler ways to do this than that.I am guessing using a loop and a variable in my array than the actual number something a long the lines of csvData(i)However I am just not seeing what syntax to use and how I would go about putting this together... Never came across anythign like this in the past.[code]any thoughts for ways to attack this problem and the type of syntax that would have to be used?
I started programming 6 months ago, Visual Basic is kind of easy and I made lots of programs. Now I am confused now. I have a serious problems about DLL's but I didn't made them but I knew how to make use of them. Okay I have 2 programs and one was having a problem and other one has no problem, they have the same framework, same code, but they have problems.url...
View 12 Repliesi recently discovered a nice feature called overloading, now the question is can i also do that for outputs? for example i want to call a function that would automatically return the datatype i assign the function toright now im geting an error saying "blabla and blabla cant overload eachother because they only differ by return types
View 3 RepliesWhat i am trying to do is open a save file dialog and write to a .txt firl the contents of my listview. so far:
[Code]...
i have this, but i'm not to sure how to write to the .txt file i know i need to use a for each to loop the contents of the list view
I have a Motor Class, along with a Collection to hold objects address. Each Collection object holds the Class fields as a String to display in list box. I am able to write the collection string to the file and save the string. But unable to open the existing file, read the file back into the collection object.
Public Class Motor
Private strId As String
Private strDescription As String
[Code]......
I have looked all over for anything (samples or tutorials for working with files and collection objects) pertaining to type of operation with out any success.
I'm doing a school project with arrays and I want it so that I input a part number and it outputs a image, price, and name for the part. I need to accomplish this using the array. We've only ever done arrays where you input a part number and one thing comes back out, not multiple.
View 1 RepliesI would like to build inputs and outputs interface board (if you have schematics for the hardware or where I could purchase such thing) I need 9 inputs and 8 outputs, 24 volte DC for the inputs and I want to build a form in visual basic that utilizes the serial port so for example when I press Button1_Click it will make output number 1 goes high in the board and when input 9 goes high in the board label9 or Button3 will change color in the form.
So basically the IO interface and the form will only be used to energize relays and monitor these relays. I am not worrying at this moment about if this input is high make this output high but if this is possible in visual basic currently running Visual Studio 2008 Express.