VS 2005 - Overload An Operator ?
May 25, 2009I recently got a vb book, and the operator overloading sample is quite confusing. understanding why you need to overload an operator, and what's the simplest example?
View 7 Replies
ADVERTISEMENT
CodeDom To Generate Operator Overload?
Jan 10, 2011Is there a way to use CodeDom to generate an overloaded operator in Vb.net? I want to generate this:
Public Shared Operator =(ByVal x As MyType, ByVal y As MyType) As Boolean
Return x Is y
End Operator
The closest hack I can think of to do this the following:
Dim eq As New CodeMemberMethod()
eq.Name = "Operator ="
eq.Parameters.Add(New CodeParameterDeclarationExpression(New CodeTypeReference("MyType"), "x"))[code]....
Which generates this, close but obviously wrong:
Public Shared Function Operator =(ByVal x As MyType, ByVal y As MyType) As Boolean
Return (x Is y)
End Function
Re-write Conditional Logic That Involves Checking Three Nullable(Of T) Values In An Equality Operator Overload?
Jan 28, 2011So I'm writing the equality operator overload (Operator =())for a custom object, and the resulting mess of If conditionals is just an eyesore. But so far, it seems like the only sane way to check the values to as to match the specific behavior of this object.
The rules are:Num1 is required, period, and both the left and right operands and must be equal for True. Else, False.Num2 is optional, but if specified, must be present for both the left and right operands, and must be equal for True. Else, False.Num3 is optional, but can only be specified if Num2 is also present. Else, False.Num3, if specified, must be present for both the left and right operands, and must be equal for True. Else, False.
[Code]..
I also know that I could cache elements of the checks into booleans and then use those to reduce the amount of text. But that seems like a waste of cycles just for code readability. So I wanted to know if the SO community had better thoughts on reorganizing it, just in case I'm being too verbose with my checks.
Overload The Operator() Aka "function Call" As OdbcDataReader ?
Mar 5, 2009I think it is possible to overload the operator() aka "function call" as OdbcDataReader uses it. using OdbcDataReader("myField") is the same as using OdbcDataReader.Item("myField"), I want to be able to do that for my own class, is this possible, how? I've been trying with overloaded operators but no success.
View 4 RepliesOverload Operator In Generic Class With Generic Interface Of Super Class And Inherit Class?
Jan 21, 2010I can do this without problem.
Class A
End Class
Class B : Inherit A
End Class
Dim Obj1 As A = New B
VS 2005 Syntax Error: Missing Operand Before '*' [/B]operator
Aug 13, 2011i got an error in my code which is [b]Syntax error: Missing operand before '*' [/B]operator. i am using visual studio 2005 and sql 2005 database here i attach the code.In this code i try to use button the search data in database( table name staff) using a column =NAME and text box as user input
private Sub Search_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnsearch.Click
Me.StaffBindingSource.Filter = "NAME = *" & Me.txtsearch.Text & ""
End Sub
Error: Option Strict On Disallows Operands Of Type Object For Operator '='. Use The 'Is' Operator To Test For Object Identity
Jan 27, 2010I am tightening up my coding with the Option Strict set to ON. It has now produced alot of errors. An example of this is:
If AllocatedDGV.Rows(i).Cells("RoomNumber").Value = RoomsAvailableDGV.Rows(j).Cells("RoomName").Value Then
It gives me the following error: Option Strict On disallows operands of type Object for operator '='. Use the 'Is' operator to test for object identity.
Option Strict On Disallows Operands Of Type Object For Operator Use The 'Is' Operator To Test For Object Identity
Apr 6, 2012I need to write an interface to get data to/from our data files.
We have a low level class that holds field values for each record read from the files.
This just holds two values, the value read from the file (DBValue) and the updated value that may need to be written back to the file (CurrentValue).
These values may be any of the standard value types (integer, date etc) or a string.
Either value (DBValue or CurrentValue) may be null if not defined.
I have written the class to manage this data which works fine while option strict is NOT on.
But we have an office policy of having option strict on all the time.
When I put option strict on, my object value comparisons fail with the error: "Option Strict On disallows operands of type Object for operator '='. Use the 'Is' operator to test for object identity."
Question, how should I change the following code to handle option strict on ...
This is all running on Visual Studio 2010
[Code]...
Coalesce Operator And Conditional Operator In .NET?
Mar 10, 2009Possible Duplicate: Is there a conditional ternary operator in VB.NET?
Can we use Coalesce operator(??) and conditional ternary operator(:) in VB.NET as in C#?
VS 2005 - Operator 'And' Is Not Defined For Type 'Color' And Type 'Integer'
Jun 10, 2009Public Pixels(0 To 95, 0 To 127) As Variant Red = Pixels(X, Y) And &HFF i get this code from VB6, and when i transfer to VB05 i got problem said " Operator 'And' is not defined for type 'Color' and type 'Integer'. " i sent to VS2005
Public Pixels(0 To 95, 0 To 127) As Object
Dim red As Object
Red = Pixels(X, Y) And &HFF
How To Use Operator As A Comparison Operator
Nov 11, 2009I want to perform equality comparison in VB.NET and cannot get it to work. Error: value of type Boolean can not be converted to System.Drawing.PointF
[code]...
String Concatenation In VIsual Basic 2005 - Operator '+' Is Not Defined For String " " And Type 'Range'
Jul 30, 2011The intent of the code is to open an xls file -minimize it , search for keywords . there are columns like test case name ,priority(simple ,medium and high) with associated keywords.If keywords are found, it shld save the test case name - Priority in a text box. When i run this code i am getting err in
[Code]....
Can't Overload A Function
Mar 4, 2012What I am doing is generic and has been done a thousand times, but I can't figure out how other programmers do this.
I am working with the Law of Sines to return an angle of A. There are two combinations, for instance:
Return Angle A given (side b, side a, angle B)
Return Angle A given (side c, side a, angle C)
----Note: All together there would be six, two for each angle)----
I can't overload the functions because the signatures are not unique. The parameters and return type are primitive type Double.
The use of Aliases works for reading the code but does nothing to resolve my issue.
One approach I thought of was to create a structure for each side and angle; however, I don't want to create any more complexity than needed.
Another solution could be using a strategy design pattern?
Way To Overload A Property In .NET?
Feb 10, 2010I've done plenty of Method Overloading, but now I have an instance where I would like to Overload a Property. The IDE in Visual Studio seems to allow it, since I can actually set up the two overloads, but I get an error saying it is not valid because they only differ in type. I think I'm missing something in my syntax?I want to be able to use two (or more) different custom classes as the Type for my property.
Public Overloads Property myFlexibleProperty() As myCustomClass1
Get
Return _myFlexibleProperty1
[code].....
Overload Constructors In A Class?
Apr 19, 20091)When we use Overload constructors in a class
2)and which one is get execut first.
Public Class remoteobj
[Code]...
Overload Functions 2008 EE?
Mar 1, 2009I am trying to pass multiple signature calls to an overloaded function. My understanding is that VB can recognize the different signatures and use the appropriate function.[code]...
View 2 RepliesOverload Functions In A Modual?
Oct 12, 2009if it is possible to overload or override (not sure about the difference) functions in a modual.vb.
View 7 RepliesOverload Of Actions In The Controller?
Mar 12, 2012I'd like to do a kind of overload of the actions in the controller.
Is it possible? 'Cause I havn't found any info about it. And when I tryed, I got this error.
The current request for action 'Create' on controller type 'InterviewController' is >ambiguous between the following action methods:
System.Web.Mvc.ViewResult Create() on type
[Code]....
I've tryed few things to get what I wanted. The last one was to copy what was done in the "Edit" action, but for an empty rank. (so I created an empty rank in my DB). I don't think it was a good idea (imagine someone wants to update the DB where idOpportunite = 5...)
Overload Resolution Failed?
Mar 17, 2009i have this piece of code (which is part of Unolib)
Private Sub Saveonefile(ByRef fl As Sockets.TcpListener)
Dim Client As Sockets.Socket
Dim name As String
Dim buffer(PacketSize - 1) As Byte
[code]....
there are actually 3 errors, but they are all like this one?
Overload Two Properties Within The Same Class ?
Oct 15, 2009I want to have use several versions of the same property within a userControl that inherits a textbox. How can do this if it is possible?I tryed using an object data type insted of the integer and double but it seems like object datatypes carnt be used within a class, because when I tried to use the control the VALUE property was disabled.
'PUBLIC PROPERTIES
Public Property Value() As Integer
Get[code].....
VB-Overload Error Message?
May 8, 2011Anyway, I figure my code is all messed up, but I still don't understand this error message.Also, s there a website, that I can get the definitions of the error messages that VB throws out?
Sub Main()
'declaring variables
[code].....
VS 02/03 /Overload Resolution Failed?
May 11, 2010Modifying a program in VB.NET 2003. Need to open a streamwriter object. Here's the trouble line...
Dim objWriter As StreamWriter = New StreamWriter(strHandle).where strHandle is the path and name of a file.
The StreamWriter(strHandle) portion is underlined as an error. The pop up says "Overload resolution failed because no accessible 'New' can be called without a narrowing conversion:"
.net - Method Overloading Getting Wrong Overload?
May 3, 2012I am having a problem convincing Visual Studio and the compiler to use the correct method overload, possibly because of inheritance.
Given these objects:
Public Class Matrix
...
End Class
[code]....
C# - Overload The Windows Explorer Functionalities?
Aug 26, 2011I want to catch the event of deletion, renaming or copying a file in Windows Explorer. For example, if a folder contains the files "test.a" and "test.b", and that I remove "test.a", then my program will remove the two (same for copy and rename).I know how to add an entry to the context menu of Windows. But the goal isn't to add functionality to Windows. The goal is to redefine an existing function.
View 2 RepliesHow To Overload Dictionary.Item(TKey)
Feb 9, 2011I created my own Dictionary class, based on the .NET Dictionary. Now I want to overload then Item() Method. This works fine with the following code: Public Overloads Property Item(ByVal key As TKey) As TValue
[Code]...
Multithreading Overload Resoultion Error
Jan 23, 2012I am attempting to use multithreading in one of my VB programs for the first time in attempt to make it more efficient.I have some code that starts the thread but I get an overload resolution error.When initialitzing the thread I am calling a boolean function and not a Sub, but I am not sure if that is the problem.I think the problem may be that the class in which I want the thread to start in has Option Strict Off while the class initalizing is set to Option Strict On.I will post my error and the code which is causing the error. '[code]
View 2 RepliesOverload A Method To Accept Eh Web Form?
Jul 5, 2009I use MVC a a programming pattern, in Win apps i simply pass the form to the controller. [code]...
View 2 RepliesOverload The Method To Allow Strings Instead Of Integer
Jul 2, 2011I am working on this project and I am suppose to overload the method to allow strings instead of integer. Allow the user optionally add a thried string from a third text box. Okey I am trying to under stand this good. This is the code I have:
This is my overload class
Public Class OverloadEx
[CODE]........................
So with my overload class instead of integer I should put string there? If the user clicks the add button it will allow the user to add all 3 text boxes but when the user click the add string it will allow the user to add all three text boxes to string. So do I click the add string button to overload it to that one just like I did with the add?
Overload Windows Control Method
Mar 1, 2010I need to overload a method in a windows control does anyone know how to get me started .... oh er missus.
View 2 RepliesVS 2010 Overload Resolution Failed?
Feb 22, 2012i recently stumbled across an error "overload resolution failed because no acceptable fields accepts this number of arguemnets"ive spent an age researching and cannot for the life of me work out what it means, or what exactly the problem is If anyone can enlighten me i would be extremley grateful.
If it helps ive posted part of the code below and highlighted the part which is causing the error in bold
Private Sub UserForm_Initialize(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]...