I have a variable declared in the 'Form1' class and I want to change it in a sub in different class to a different value, and then use it agin in the 'Form1' class. However, I don't seem to be able to change the value in a different class. Is there any way I can rectify this?
View 3 RepliesThe code below works for the class that I hard coded "XCCustomers" in my RetrieveIDandName method where I use CType. However, I would like to be able to pass in various classes and property names to get the integer and string LIST returned. For example, in my code below, I would like to also pass in "XCEmployees" to my RetrieveIDandName method. I feel so close... I was hoping someone knew how to use CType where I can pass in the class name as a string variable.
Note, all the other examples I have seen and tried fail because we are using Option Strict On which disallows late binding. That is why I need to use CType.I also studied the "Activator.CreateInstance" code examples to try to get the class reference instance by string name but I was unable to get CType to work with that.When I use obj.GetType.Name or obj.GetType.FullName in place of the "XCCustomers" in CType(obj, XCCustomers)(i)I get the error "Type 'obj.GetType.Name' is not defined" or "Type 'obj.GetType.FullName' is not defined"
'+++++++++++++++++++++++++++++++
Imports DataLaasXC.Business
Imports DataLaasXC.Utilities
[code]....
I have a variable whose scope needs to be global, because it needs to be called in a function as well as in a button press. So I declared the variable in a Module so it would be global.The problem is that the value of this variable needs to be equal to the value of the text property of a textbox in the form.You enter a string into the textbox, in this case I entered "Hello". Then you click the button and it displays what you wrote.You click OK in that message box and change the value in the textbox. In this case I changed it to "Goodbye". Then I hit the button again, but the variable did not change values and the messagebox displays "Hello" again.
[code]....
Here is the entire source code:
Module Module1
Public strDataValue = frmTest.txtDataValue.Text
End Module
[code]....
Note: This is just a demonstration of a problem I'm having in a much larger program so the variable does have to be global.
Say I have a variable. Say I want to know when does the function change.'On vs2008 I think on the watch I can edit watch and put something about it. What can I do about it now? There is no such option in the context menu if I click on a watch variable
View 4 RepliesIn some part of my code i need to redefine the type of variable that was defined with a different type at the beginning
dim T as new MyClass
...
redefine T as ( MyClass2)
i do not want to do something like
dim T
t= new MyClass
.....
t= new MyClass 2
Looking for the best way to update a variable in a different class. Below is a rough outline of the situation.
I am wondering if in fnSendEmailTo if I can access the Property in CB?[code]...
I can't figure out how to make it so that when a variable reaches a certain value, an event is triggered. For example if I wanted a user's level to change to 2 when he gets 1000 exp.
Dim level as integer
Dim exp as integer
*****What do I put here?*****(when exp reaches 1000)
level = 2
how to change datetime variable in sql? I nee only time without date in textbox?
There's code:
Dim
connetionString As String
[code].....
I need execute a webPage for example [URL]. Well those variables change then I need execute this webpage but, I don't want it opens on c# or vb.net.
View 2 RepliesNeed to change datetime with time variable in this code, i tried bu it gets error
Public Sub SetWakeUpTime(ByVal time As DateTime)
bgWorker.RunWorkerAsync(time.ToFileTime())
End Sub
[Code].....
I was wondering if it was possible to change the default variable name that shows up in the auto-complete for a Try-Catch block. It populates as:
Try
Catch ex As Exception
End Try
I want it so it populates as:
Try
Catch excError As Exception
End Try
i change the value of the variable in the Backgroundworker but the if i use the varible valur outside of the thred the varible value doesn't change still previous.
View 2 Repliesis there a way i can do like this in vb.net
[Code]...
what i want is that idx keeps incrementing after each line, without incrementing it on a seperate line.
I'm trying to make an application to do mathematical equations, but I also want to implement error checking. So that if someone doesn't put anything in one of the fields the output textbox will say "Error".
But the problem is that I already declared the variables I used as a numeric value, in my case decimal.
So, when I make an if statement that says if inputbox1="" then outputbox1="Error" it doesn't work.
I think that in order to get this to work I would have to have it setup so that the variable that is exported to the text property of outputbox1 could switch between being declared as a decimal or string value based on what the user put into the textboxes. But I'm not sure how to go about this. Declaring the variables inside the if/elseif statements won't work because the variables need to be declared before they are calculated within my if/elseif statements.
I'm multiplying X*Y*Z in a loop of 200 interations Y is declared as a constant. A timer can cause the loop to pause for 10 seconds.
During this 10 sexond pause I would like to change the value of Y. It needs to be changed only for this run, not a permanent change which can be done in the declaration.
Running windows forms application, I have a module with public variable declarations which stay in scope during entire debug execution.Is there a way to cause a break to happen based on a change in value of such a variable?
View 1 RepliesI need to change the color of an oval on the user interface form based on a variable being true or faulse.
View 10 RepliesIn vb.net 2005 how would one referance a control as variable and change it"s properties. Such as in control X visible = True. Tryed string manipulations that did't work.
View 1 RepliesWhat is the correct way of assigning the selected index's value from a listbox to a variable? The user selects an item in a listbox and then the output changes depending on their selection.
I use:variablename = listbox.text
in the listBox_SelectedIndexChanged event and this works.
When I use the button_click event I use:
variablename = listbox.selectedindex
But this does not work in the listbox_selectedindexchanged event.you let me know if it is okay to use it like I did above or if I will run into problems and why you cannot use the selectedindex method.
I have a MainPage - mainpage.xaml Inside the MainPage I have a frame that hosts other pages. The first page that is auto loaded is the LogIn - LogIn.xaml
The user enters their email to login (no password required, just email to identify, its an internal app so passwords are not required or even wanted by users).
On MainPage.xaml the header should have a "Hello " TexBlock (name: ui_txbUserName). The LogIn page has a method which on submit gets the UserID (for other reasons and saves it) and the User Name.
I want to change the ui_txbUserName when the person logs in and update if he/she logs out of one account into another. I have looked at INotifyPropertyChanged and Dependency Properties and im just not sure how to go about doing this!
I have a MainPage - mainpage.xamlInside the MainPage I have a frame that hosts other pages. The first page that is auto loaded is the LogIn - LogIn.xamlThe user enters their email to login (no password required, just email to identify, its an internal app so passwords are not required or even wanted by users).On MainPage.xaml the header should have a "Hello " TexBlock (name: ui_txbUserName). The LogIn page has a method which on submit gets the UserID (for other reasons and saves it) and the User Name.I want to change the ui_txbUserName when the person logs in and update if he/she logs out of UsingOfficerID - its a global variable set when a person logs in, its used all over the place in the application.
View 2 RepliesHow do I Change the variable strLettersGuessed into a single-element array
View 4 RepliesHow to declare a variable that never change from pageload until i close the page. Simple Case :
* ShowInfo.PageLoad() begins to execute for UserA.
* ShowInfo.Page_Load() begins to execute for UserB
* UserA has variable Dummy = 100.
[code]....
But the Result: Since UserB's was the last one assigned to (which remember... there is only one version of this in all of memory), the Dummy Variable is assigned for both users but different session. UserB sees Dummy = 20 but UserA sees Dummy = 20 too. I Want that the result is UserA Dummy = 100 & UserB Dummy = 20?
i am using file system watcher for service when a xml file is come in i processed the xml file and set Processed = True but this variable value doesn't change untill all file created..
View 2 RepliesI have two module-level variables and Linq query. I want the results of the Let clause to change the global variables - is this possible?
For example:
Dim X As Integer = 0
Dim Y As Integer = 0
[code].....
i tried to change back color of a label by command button by using a variable value
Private Sub Button3_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim colorof As String
colorof = "Color.Red"[code]....
but its giving error and is not working,
Label1.BackColor = Color.Red is working but I wanted to do this with variable value
I have created a picBox inside a function, this function then adds some properties to it and then adds to: Me.Controls.Add(thisarray(count))
View 1 RepliesI am getting the error:"Range variable 'sender' hides a variable in an enclosing block or a range variable previously defined in the query expression."for this
Imports System.Data.SqlClient
Imports System.Linq
Public Class Form1
[code]....
I can select any other item from the table without the error. "sender" has the same properties as "receiver" in the SQL table.
I receive the error -
[Code]...
basically i need to change the text of a label where the name of the label comes from the value of a variable.So, for example,
Dim x as String = "lblTarget"
Dim y as String = "Target Text"
In this case the text of "lblTarget" would need to be come "Target Text". Basically, the label that is named the value of variable x would need to take on the text of variable y.