I'm trying to take a resultset, store in a class then retrieve the complete record for a given value. For example, the recordset has AnalystID (Unique), LastName, FirstName. I want to be able to pass the AnalystID and return the name. I need the ability to look up either last or firstname by analystID throughout the program. Here's what I have so far. I'm not sure I'm even headed in the right direction.
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I 'm new to programming and to vb. So my question could be from misconception about what can i do. How can i pass a string to a "procedure" and get in return a object whith the same name as the string?
View 8 RepliesI would like the focus to pass from TextBox1 to TextBox2 when I press the Return Key.
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What would be wrong in the above code. ExecuteReader is throwing excepion. Invalid cast from string to GUID. But My Sqlparamter was already uniqueidentifier nothing cast.[code]...
Trying to find some code to assist with accessing a web service. I am a newbie when it comes to web services and don't quite get the whole how to submit the request and then read the results. I know from searches that people request a copy of the WSDL file so I have attached (SystemManagementService.wsdl)
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Any sample code that could read the file signature and return the value of the signature so that it could be display to the user interface of the program in vb.net? Furthermore I would like to know that how is the coding to do the comparison of file signature and extension so that it could identified whether its a wrong extension or not.
View 1 RepliesI have the code below (found on forums) that should read the string "34,56,23,74,69" starting from the first address of another process till the end. However when I start the project I receive this error :"PInvoke restriction: cannot return variants." With Search Engine for example, the string is found, displayed and changed without any problems. Right now I have a subroutine that searches the string but only if I put the right memory address, and unfortunately the address changes almost every day.
Imports VB = Microsoft.VisualBasic
Imports System.Runtime.InteropServices
Public Class Form1
Inherits System.Windows.Forms.Form
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I am developing a vb.net app that should read cell values from excel. However, it is not returning any results and I thought that it would be really simple. I have imported all the references viz. Microsoft Excel 12.0 Object Library.
Following is the function in my class file which should read the excel file
Dim mobjApp As Excel.Application
Dim mobjWB As Excel.Workbook
Dim mobjSheet As Excel.Worksheet
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The value from the text box is not being passed to the class.[code]...
View 13 RepliesCan any one please tell me why the following code is not giving me the expected result Application type as Class library Form with 1 text box and 2 button
form1.vb
Public Class Form1
Private Sub button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim cl As New WindowApp.Class1
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I have been reading the following thread by perito which was resolved with a great deal of assistance from Athiest.[url]...
Using the sample code in this thread I have now created a Client and Server app which is successfully sending messages over a network between two machines.
Now that I am able to send simple text messages I would like to progress to my intended pratice of sending more complex information between the machines. I have already written a program which generates and stores data with a class which I use as a data type. I would like to be able to pass this class from one machine to another.
I have a class, LogRequest, which contains parameters (members) for an object.This object is turned to an sql query using another class, DataAccess.And lastly, I have the class Search which run the sql query.[code]...
View 2 RepliesI'm still trying to develop p2p chat application from this thread. I have 2 applications, server and client. A client has: Form1.vb, BB_Client.vb, and RTS_SocketClient.vb. Dataflow is Form1 creates new object of BB_Client, BB_Client calls RTS_SocketClient.[code]...
View 7 RepliesI have a main class named PortaLinhaFrio and a child class named Ambiente [code]...
View 2 RepliesI have a class i've called "buttons", which passes in 1 variable, the button text, and then returns a new button with that text. however, i do not know how to get the class, when called to return a button.
similar to how 'toString' works, except it would return a button object instead of a string. (im not sure how toString works in vb.net. in java it is automatically called when you call the new class, so newclass and newclass.toString(); return the same) [code]...
i have a class called car and within that class i have a few vairables
Public Class car
Public Property Name As String
Public Property ID As Byte
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Okay so what im trying to do is make a simple particle system in VB (Yes i know this isnt a ideal setup). Im going to have particles dieing and spawning new ones tho, To do this i need to be able to pass a function to the particle when its created then call that function when it dies. Is there a way to do this by passing function pointers?
View 9 RepliesI create a object type entity in the main function and would like to pass it to a separate class, do some calculation, and then pass the result back to the main function. But I keep getting errors, can someone point me where I did wrong? It's in windows application[code]...
View 2 RepliesI have a form that contains a DataTable variable (dt) that has a RowChanged event assigned to it. I use a UserControl (DataGridViewFilterAndSorter) to get a subset DataTable from dt. I need dtSubset to have the same event as dt. How can I do this?
In other words, I need to pass the dt event to the DataGridViewFilterAndSorter class and store that event as a class level variable. How can I do this?
Public Class frmCalculatedResults
Private dfs As DataGridViewFilterAndSorter
Private WithEvents dt As DataTable
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I wrote the following two functions in a class to take a gpib reading and also take a measurement from an LCR meter.
HTML
Public Function gpibRead(ByVal Channel As Integer, ByVal buffer As Integer) As String
Dim readingBufferA1 As String
Select Case Channel
Case 1
readingBufferA1 = gpibLCRA1.ReadString(buffer)
Return readingBuff
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When on the main form I call the funtion takeMeasurement(1) how can I get the LCR readings back. If I try and use readingBufferA1 on the mainform it doesn't recognize that as a variable. I know that it is taking the reading and storing the correct numbers because I am monitoring on NI Spy.
I have a custom class named Location with multiple properties.
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How can I get the value of each p.Name and return "Main St", "AnyTown" o "USA"
I'm moving code from code-behind to classes and run into a problem. I have a method which makes a string (an html invoice). In the method a final amount is created. I want to make a class called Invoice which will have the method "CreateInvoice" which will return a string and I also want to set the finalCharge property of the object.[code]
View 1 RepliesI have a Class in a Windows Form project. I would like to call the class return value from the Form1 sub on button click. How do I do that? Lets say I would like to display the Return in a MsgBox?
View 4 RepliesI have question about returning an object from a class. example of my codeclass ADDBUTTON:
Dim test As New Button
test.name ="NAME" (radom generated)
start.controls.add(test)
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i have the web service that return a class Dto the name of the service is GetDto and the element of the class that return are Id and name.
how to manage a return class from web service?
I have an application that reads another processes memory.I initially had multiple scanning threads for the various areas I needed to read.This was processor intensive so I decided to go with the observer pattern.All was well except that I am having a weird behavior.Here is what is happening.I have 2 radars (overlay and mapped)Both have a watcher class that attaches to the memory scanner and is notified on a new list of mobs.so I open radar 1 (mapped) it attaches it's watcher to the scanner and waits for mob list update notifications
Open radar 2 (overlay). same thing happens and another watcher is attached.all is well and good so far.Now there are properies on the mobs in the list, one of which is IsFilteredOut.This property is set in the radar code after it receives the list. Now the weird behavior is that no matter what I do, the second radar to be opened changes all the properties of the mobs in the list of both radars.It is as if I am passing the list by ref, but I am not.I actually create a new instance of the moblist class every time I pass the list.Here is the notify code. As you can see I create a new instance of the moblist class each pass.
Private Sub NotifyMobListUpdated(ByVal Mobs As List(Of MobData))
If Mobs IsNot Nothing Then
For Each w As Watcher In _watchers[code].....
I am having a hard time trying to pass the values from a list inside of a class. I am trying to display multiple lines of values from a list inside of a class. My "client" class stores multiple lines of values into a list(of class transaction), with the number value (num) counting each transaction that it adds to the list.
Ex:
Public Class Client
Private m_tranlist As New List(Of transaction)
If CInt(tid) = m_ID Then 'create client tran, add to list
nextTran = New transaction(m_ID, tcode, tdate, ttype, tshares, tprice, value, num)
m_tranlist.Add(nextTran)
num += 1
End If
Now I am trying to display each line that is stored in the list in a label, and I am having major trouble. How do I call the list in my main form in order to display all of the values?
Is there a way to pass code blocks to a method or class?
I'm trying to write a number of exception handling methods.[cod]e...
I am using an email verification program I have downloaded to test the validity of a given email address.I have setup a class in VB using Visual Studio 2010 with the required code that runs the check.I have then registered this as a COM so I can call it through VBA in Excel.In an excel workbook I have then created a module that calls the VB class. The excel module tests whether the email address typed in cell "A1" is valid or not. At the moment the VB class simply gives me a messagebox output saying "Success" or "Fail" which works fine.What I actually want though is for the "success" or "Fail" message to appear in cell "A2" next to the email address as opposed to the current messagebox output.
View 2 RepliesI'm writting a class that needs the form handle but there is a way to use it without send it as argument in the class constructor or in a property?I know that the handler is not set until the form is completely loaded so that is another problem too.The basic idea is catch the form handle without pass it as argument and handle the wm messages.
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