TCPIP Message To Structure
Jun 9, 2011I have a socket program that receives data from the server every 5 seconds. that data is defined as in a c program on the server
struct MYDATA
{
int id;
[Code].....
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Structure To String To TCPIP Message?
May 23, 2011I have structure that looks like
Public Structure MYID
dim id as long
<VBFixedString(20)> dim AppName as string
<VBFixedString(20)> dim CompName as string
end structure
now i want to send to my server with something like
with MYID
id= 710
AppName= "MYName;"
CompName="MYCompName;"
end with
i need to send this as string to my server....
"710MyName;MyCompName;"
dim buffer as [Byte]() = system.text.encoding.ASCII.Getbytes(MyID)
I do a connection.send(buffer) i get the values converted... i need to send the straigt text?
Privileges - .net 1.1 TCPIP Printer Port Creation With CreateProcessWithLogon API?
May 22, 2009A few months back I wrote a VB.net console application to migrate a group of about 100+ printers and the 1800+ users that use them from some old HP print appliances to a mixed Print Server and Direct to IP Printing solutions. The application uses a database to compare installed printers and remove old/invalid shares and remap to the new Win2K3 based print server OR create a TCPIP printer port and install the driver for direct to IP printing.
It worked really well, but users needed power user rights to create the TCPIP printer port. For the main campus this wasn't an issue, but the smaller remote sites need a solution that allows the app to be run by users without power user rights.
My solution was to take the "CreatePrinterIPPort" function and put it into it's own wrapper app and then call it as needed from the main app using a hard coded local admin account for the purpose, but I'm running into issues when spawning the createport app. If I run the app standalone it creates the port with no issue, but when I run it in my test app to spawn the createport using the CreateProcessWithLogon API the port creation fails with an "access denied" error. I'm limited to using .net 1.1 as 2.0 isn't in our environment throughly and I was told it wouldn't be pushed just for this app.
[Code]...
Read The Data From Barcode Weight Scales By Serial Port And TcpIp Port?
Nov 27, 2010I'm mohammed from Oman ,I'm visual studio.net programmer How I can Read the Data From Barcode Weight scales By Serial port and TcpIp port
View 7 RepliesStructure Inside Another Structure Receives Null Reference Error?
Jan 5, 2012Module Module1
Public Structure structure1
Public TRANS() As structure2
End Structure
Public Structure structure2
Public X() As Integer
End Structure
End Module
Class Structure - Large Structure That Has Lots Of Properties ?
Jan 5, 2010I'm new to VB 2008 after having spent a long time with VB6, so I apologize if this is a stupid question. But I'd really like to have this straightened out.
Let's say I have a pretty large structure that has lots of properties.
Code:
Now say that I want an internal database with about 10 instances of this structure total, describing, say, 10 different products that a store sells. When these values are loaded from a database, they remain totally static. (However, they can be different each time a program loads)
Now say that I have a class. Each instance of this class is a type of that BaseProduct structure. Meaning, each instance of the class pertains to one of the 10 types of products that the store sells. However, this class has additional properties that pertain specifically to each instance, which are not static.
Code:
Now, the problem here is... If I have 200 different transactions, each one contains an instance of BaseProduct. BaseProduct is HUGE, and is largely redundant (only 10 types possible), so I think it's a little silly to include a whole copy of it with EVERY transaction. However, the Transaction class really needs information regarding the base product it pertains to. Is there a way to, instead of declaring a New BaseProduct in the Transaction class, to simply make one of the properties of the Transaction class a pointer to a BaseProduct variable?
In VB6, I would accomplish this by making a BaseProduct(10) array, and then giving each Transaction an ID number referring to an entry in that array. But in VB 2008, using class structure, this is impossible. I can't define the BaseProduct(10) array outside of a class in a namespace, and if I define it in the actual application's form, then the class loses modularity since it relies on the application that's using it.
Converting Structure Within Structure To Byte Array For Socket
Aug 29, 2009I am trying to communicate with an external device and i am trying to send a byte array to the external device via sockets but i am always getting a response the message size is too small so i am not sure what i have done wrong. Between the data type there should be no alignment present and all numbers are represented in little endian format. The char array is not null terminated as mentioned in the protocol specifications.
I have to send data based on a struct that embeds 2 other struct. So here's my vb.net code for the struct used to convert to byte array and the sending part.
Public Structure MESSAGETYPE_OIP_Login
Dim Header() As COMMANDHEADER
Dim UserName() As PSTRING
[Code]....
Invalid Structure Size When Marshalling C Structure To .NET
Apr 14, 2012I'm experiencing a problem with the following c-structure:
typedef struct tagTEXTUREPROP
{
DWORD dwSize;
[Code].....
The Marshal.SizeOf obviously calculates a size of 76 and it works with the DLL function, but it leaves me with some bad feelings.
VS 2008 Convert The XML Structure Into A Class Structure?
Apr 25, 2010I'm having a problem that's driving me crazy; I can't understand how to convert the XML structure into a class structure (that I want to use to hydrate a XML document).
The XML document looks like this:
xml
<?xml version="1.0" encoding="utf-8"?>
<artists xmlns:opensearch="http://a9.com/-/spec/opensearch/1.1/" xmlns="http://www.spotify.com/ns/music/1">
[code]....
Arraylist Of Structure Within Array Of Structure?
May 23, 2010I want to make a structure within a structure. Basically it will appear like this:
Structure ID
dim CardType as string
im CardCode as string
[code]......
Assign Array Of Structure To Another Of Same Structure?
Oct 12, 2010In Vb.net I am trying to assign an array of structure to another array of same structure[code]...
View 2 RepliesCreate A Message Box That Stores User Name, Message And Post Datetime Into The Database As Messages Are Sent?
Jan 6, 2010create a message box that stores my user name, message, and post datetime into the database as messages are sent. Soon came to realise, what if the user changed his name? So I decided to use the user id (icn) to identify the message poster instead. However, my chunk of codes keep giving me the same error. Says that there are no rows in the dataset.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim name As String
Dim icn As String
Dim message As String
[code]....
Create An Error Message By Message Box To Tell The User To Enter A Number Only If They Key In A Character Value?
Feb 22, 2009how to create an error message by message box to tell the user to enter a number only if they key in a character value?
I MEAN AFTER THEY PRESS THE CALCULATE BUTTON
Private Sub btnCalcFat_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalcFat.Click
Dim intFat As Integer
intFat = Integer.Parse(txtFat.Text)
lblResultDisplay.Text = txtFat.Text * 9
End Sub
My text box is call txtFat
Structure With A Structure Array?
Sep 12, 2011I have two structrures
Public Structure PhoneScheduleEntries
Dim Count As UInteger
Dim PhoneSchedule() As PhoneScheduleEntry
End Structure
Make The Text In A Message Box Scroll Across The Message Box?
Dec 13, 2010just curious if there was a way to make the text in a message box scroll across the message box
View 1 RepliesResults Should Be Displayed In A Message Box But Message Box Does Not
Nov 16, 2009I am using Visual Studio 2005 for coding. I am doing an exercise where I have to create a data lookup program. The program is to illustrate the concepts of using a database to look up information based on user input. The program allows a user to input two search criteria for a product search. The program then displays each individual search result, or record that meets the search criteria in a message box. I am not getting the message box and I don't know why. No errors are present during compiling so I have no indication as to where the problem is.
Option Strict On
Imports System.Data.OleDb
Public Class Form1
[Code]....
EnCoding Message To DDE Client Using System.Text.Encoding.ASCII.GetBytes (message)?
Oct 28, 2009I am sending a DDE message to a client using System.Text.Encoding.ASCII.GetBytes(item) . However, before the message is actually sent, I would like to get the message coded where if the item="Ask" then item=Ask (string variable) and so on. The code is:
Protected Overrides Function OnRequest(ByVal conversation As DdeConversation, ByVal item As String, ByVal format As Integer) As RequestResult
' Return data to the client only if the format is CF_TEXT
[code]....
Get "Textbox1.text" To Go Into The Message Area Of Xbox Compose Message
Oct 24, 2010Don't know how to get "Textbox1.text" to go into the message area of Xbox Compose Message.
View 7 RepliesAsp.net - Html Parser Error Message: Parser Error Message: The Server Tag Is Not Well Formed
Aug 11, 2011I am getting the error Parser Error Message: The server tag is not well formed. on the code line below:
<asp:HyperLink ID="imgFileType" ImageUrl="images/Icon_Pdf.gif" NavigateUrl='<%#"javascript:ViewFile('erg_", Eval("DocumentName") %>' runat="server"></asp:HyperLink>
I need the url link to be parsed as:
javascript:ViewFile('erg_Invoice_3200_QRG_Restaurant.pdf');
What am I missing in the syntax?
How To Add To A Structure
Jun 11, 2010I have created a public structure:
Public Structure LogicalEdge
Dim sTypeEdge As String
Dim dTotalLengthOfLines As Double
Dim lstLinesInEdge As List(Of Line)
End Structure
In my code, I create a new list of this LogicalEdge:
Dim myListOfEdges As List(Of LogicalEdge) = New List(Of LogicalEdge)
After, I create a new LogicalEdgecontainer:
LogicalEdge = New LogicalEdge
I set one of it's properties:
LogicalEdge.sTypeEdge = "endcap"
Now, I add it to the list
myListOfEdges.Add(LogicalEdge)
After looping a few times, i want to set one of the other propterties for the same item in my LogicalEdge, but when i do this:
LogicalEdge.dTotalLengthOfLines = 80.77
To look at the values in the collection, I loop through myListOfEdges collection; and I see that dTotalLengthOfLines doesn't pick up the value i have assigned to it. i thought I might need to identify which item in myListOfEdges to add it to... so i tried this:
LogicalEdge = myListOfEdges.Item(i)
LogicalEdge.dTotalLengthOfLines = 80.77
But that didn't work either.
.net - Opposite To A Structure?
Jun 29, 2011I'm sure there is an answer to this somewhere but I'm clearly using the wrong terminology in my searches, so I apologise in advance for this inevitably being a duplicate.Take the function CType. Clearly I can cast (or at least try) a given object to a given reference type. The function will not work if trying to cast to a structure, i.e.CType(myObject, Integer)
will generate a compiler error. This I'm sure most often crops up when working with generics:
[Code]...
What is the opposite? I want only reference types so that CType doesn't fail. I can't overload the T As Structure with a plain T because it considers them identical signatures, so surely there's a keyword I'm missing somewhere?
Add A Structure To A Collection?
Sep 18, 2011Recently I found that I'm not able to instantiate a structure for an array:
Dim mObjectLists() As New objectLayout
Ok, fair but It's an easy way to store a bunch of data in an array instead define a class. And after that I tried to define this:
Dim mObjectLists() As Collection
And add structures to the collection. But it says you should instantiate the reference object first. I searched about creating own Collection based on the base collection class but I think It's wasting time to write a code with class inheritance instead the first sample.
Add A Structure To A List
Sep 27, 2011add a structure to a list
View 2 RepliesC# - Use A Structure Rather Than A Class?
Apr 10, 2009In a recent project I was working I created a structure in my class to solve a problem I was having, as a colleague was looking over my shoulder he looked derisively at the structure and said "move it into a class". I didn't have any argument for not moving it into a class other than I only need it in this class but this kind of falls down because couldn't I make it a nested class?
View 5 RepliesConvert Structure From VB6 To .Net?
Dec 8, 2009I need to convert structure from VB6 to VB.Net. This struct is used to pass to a c++ dll. The problem is that the following struct size in VB is 113, but for some reason in VB.Net is 116.
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DllImport Using A Structure?
Jan 14, 2009I have an unmanaged C++ dll that I am using in my program. I have successfully used several functions using DllImport. I have run into a problem with one function that takes a structure as input. I originally tried building a structure to pass to the function, but this was unsucessful. So i created a class to define the needed structure. When I pass this, I get no error message, but also no data is passed back to this variable. I have a C++ example of how to use this function, but I don't know how this translates to VB 2005. Here is how they call it in C++ .
[Code]...
Get Name Of All Variables Within Structure?
Jun 28, 2012I have a structure type, as below
Code:
Public Structure StrFolder
Public isActive As Boolean
Public NameFolder As String[code]....
I would like to retrieve and print each variable name within a given structure (not its value). For example:
StrFolder(0).Name should print "isActive"
StrFolder(1).Name should print "NameFolder"
StrFolder(2).Name should print "URLIDNumber"
StrFolder(3).Name should print "DateOfFolder"
etc..
I would also like to know each type of an item within a structure. For example:
StrFolder(0).Type should print "Boolean"
StrFolder(1).Type should print "String"
StrFolder(2).Type should print "Integer"
StrFolder(3).Type should print "String"
etc..
Getting A Structure From Memory?
May 15, 2009What is the best way to get a structure from memory, I know the format:
[Code]...
The structure is 53 bytes until the chat text, the message length is determined by one of the structure variables LineLength, so what is the best way to get that and put into into a structure?
Iterate Through The Structure?
Mar 26, 2009I have a structure with types ranging from thread's to control.what im looking for is a easy way to iterate through those item like For eachbut i couldn't get for each to workis there a way to do it
View 1 RepliesLoop Through The Structure?
Jan 29, 2010I'm sure I need to do a for each <something> in my something..but I cant figure out what..I kinda want to make a trace program for my structure so I can loop through and split out the name and the value in it..
View 12 Replies