What Is The Difference Between Return And Exit
Jun 9, 2011Is there any difference between Exit and Return?
View 5 RepliesIs there any difference between Exit and Return?
View 5 RepliesJust curious on what the difference is between the "Me.Close" and the "End" code for Visual Basic in terms of writing a Exit Button?
View 13 RepliesIn VB.NET on a boolean function if you run an Exit Function line will it return false?
View 4 Repliesin my following code, i get the warning doesn't return a value on all codepaths
Public Function getbacktrace(ByVal backtrace As Integer) As StackFrame
With New System.Diagnostics.StackTrace()
If .GetFrame(backtrace + 1) Is Nothing Then
exit function
[code]....
if i change exit function to return new stackframe,anyway, why doesn't Exit Function automatically returns a "dead" stackframe?
I have the following piece of code: trying to use this in 2.0 framework. getting error for not having a return statement before exit function.[code]...
View 4 RepliesIs there any difference between the following:
[Code]....
What is the difference between this two ways of returning value in a function in VB.NET?
Using Return Statement:
Public Function Foo() As String
Return "Hello World"
End Function
Using Assignment:
Public Function Foo() As String
Foo = "Hello World"
End Function
I'm using the first one then I saw someone using the second. I wonder if there's a benefit I could get using the second.
I'm developing a program using VB 2005.I've tried to use the following instructions to "kill" the application
Application.Exit()
Environment.Exit(0)
(not at the same time)
[code]....
I'm having a bit of a problem getting my application to close properly. Basically I have one main form from which all other forms open. If a user tries to close that main form, I want to bring up a MessageBox asking if they want to exit the application.However, when I try to do that it asks the question twice. It seems that the Application.Exit() is triggering the FormClosing event again for some reason, but I don't know of another way to exit the application. BTW, the main form isn't the startup form so I can't use the option to close when the startup form closes.
View 9 RepliesNow I have a sub to validate a bunch of textboxes and combo boxes.I previously used many IF statements to validate and pop up different messageboxes and Exit Sub in every IF statement.But I heard that too many Exits will decrease the efficiency and they were not recommended to use. Instead, nested IF is better because it will let the process naturally go to the end.Then I found out that if I use nested IF,it will be hard to read, since messageboxes are all separated from conditions.
View 2 RepliesHow do I exit from the recursive loop from the code below. I would like to notify the end-user to select a checkbox in a msgBox before I exit the loop.
[Code]....
Both seem to accomplish the same thing--exit a subroutine. Is there any difference in how they work under the covers?
[Code]...
I have just done my program, just skeleton not completely, the final problem has not been solved up to this time.When I run my application, the Icon of its will be showed at TaskTray. I would like the icon is there when I exit fom of application and then If I double click on the Icon, the application will be showed.
View 5 RepliesI use this code to return records in a DataGridView:
[Code]....
I'm working up a system where I plan on using RealProxy objects to enable intercepting method calls against a set of objects, handling the call, and then returning appropriate results. This works just find for simple return types like strings or ints, but I can't seem to return objects from the RealProxy.Invoke method. Everything works. I get no errors, but the returned value is always NOTHING, instead of an object.
I've worked up the smallest sample code I could, and have included it below. Essentially, just call RPtest and single step through. The code creates a simple object, RPTestA, with a string field and an object valued field It then retrieves the string
[Code]...
I'm making a Visual Basic GUI application to display whether a number of my ports are open for people to know whether things like my website and my Minecraft server are open.My problem is I have absolutely no idea how to do this in Visual Basic.Basically, I'm asking for something which sends a signal to an IP with a specific port, if it is open then return true, if it's closed, return false. Similar to: http:[url]....
View 1 RepliesI would like the following function to return Nothing if the element with the specified key is not in the collection. Instead, it returns an error - something to the effect of "no element found"
Public Class MyCollection
Inherits System.Collections.ObjectModel.Collection(Of MyType)
Public Function FindByActivityKey(ByVal searchValue As Integer) As MyType
[code]....
How to exit from iframe?.I have a pages called "Master.aspx","Parent.aspx(inside that iframe is there)","Child.aspx".I am calling "Child.aspx" inside "Parent.aspx" page using iframe.If "strBillingAddress1" is null then i need to redirect to page Master.aspx".It is redirecting but showing inside iframe.I dont want this behavior.I need to open as new page itself?This is the code.
If String.IsNullOrEmpty(Session("strBillingAddress1")) Then
Response.Redirect("Master.aspx")
Response.End()
End If
How can i exit a for each statement i mean say i had the code below (not real code its sudo code)
CODE:
but i don't want to exit just this for loop i want to exit the previous for loop at line 1
CODE:
I have the following code which gives me an error at run time. The problem is when TxtSearch.Text - is not an integer a message box should be prompted saying- Only a numeric value is allowed in this field, otherwise continue with the sub.
Private Sub ButtonSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonSearch.Click
Dim query As String
[Code].....
The error I receive is showing ''saved_prac = cmd.ExecuteScalar()''..
First it brings the Message box - Only a numeric value is allowed in this field. When I OK it, then it brings another message box "error converting data type varchar to numeric". When you click OK the application crashes...
I have this program and I want to put either a Quit button or Exit Button to quit the program (besides using the 'x' at the upper right corner)
View 3 RepliesI have a VB.NET form (CopyScenarioForm) with a OK button (DialogResult property = OK) and also assigned it as 'Accept Button" for the Form.
I show this form from my main Form (mainForm) using
If DialogResult.OK = CopyScenarioForm.ShowDialog() Then
DoSomething()
End if
Now when user clicks on the CopyScenarioForm.OK button, I want to validate his entries and if invalid I want to 'Exit Sub' from the OK button's click handler but when I do that the form still closes out and DoSomething() gets executed. Is there a way to stop this and keep the form alive and only exit if the inputs are valid. I noticed, if I change the OK button's DialogResult property to 'NONE' instead of 'OK' then it doesn't cause it to close. but then how Do I know how the user exited the form to execute DoSomething().
I have been playing with adding labels and text boxs to a form by using code I would like to add a exit button
Private Sub MainForm_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Me.Text = "InputCode"
[Code]....
I have done a lot of searching and cannot find a solution to my problem of, my application appearing in the processes even after exit.
Note: It doesnt appear in the processes due to the type of exit i have used after the click function happens.
Public Class FCAM
Public Sub Launch(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Launch_FCAM_FarCry.Click
Process.Start("....Bin32FarCry.exe", "-MOD:FCAM")
System.Windows.Forms.Application.Exit()
[code]....
I have recently implemented to following code on a good deal of my forms.
Public Overrides Function InitializeLifetimeService() As Object
Return Nothing
End Function
It has worked great to solve some of my odd application hangs when the application has been running > 1 week.However, when the user closes the program I now get an Application Crash screen.how to stop this? how to put it back to "normal" with a global variable?
Public Overrides Function InitializeLifetimeService() As Object
if readytoExit then
' Return... not nothing?[code]......
My application exits sometime without any exception. I am using loop in separate thread to read HID device.
Private Sub USBListenServer()
If (readHandle IsNot Nothing) AndAlso (Not readHandle.IsInvalid) Then
Try
[Code].....
Can anyone tell me what the technical difference is between Application.Exit() and End?Why would you choose to use one over the other, for example?
View 5 RepliesWhich is the best or corrent method for exit application?
[code]...
Private Sub Form1_Unload(ByVal Cancel As Integer)
If System.IO.File.Exists(Application.StartupPath() + " empfile.tmp") = True Then
System.IO.File.Delete(Application.StartupPath() + " empfile.tmp")
End If
End Sub
I use this code but it doesn't work. I want to delete a file when I click on X or when close the application.
i will just use Environment.Exit(code) to exit an application. (usually through a button click) , but i would like to know is it the proper way to exit , ie, releasing memory etc etc...
View 3 Replies