I am trying to do a simple program where I have a public structure and public function in a code file, the problem is I want to return two integers. Here is the code from my code file.
[Code]...
I have a windows app that references a web service I created. In the web service, I created a function that needed to return more than one value. Because of this, I created a public structure in the web service:
Public Structure MyRecordSet
Public lstOfDataInRecord As List(Of String)
Public iNumberOfRecords As Integer
End Structure
Here's the function - the return value is MyNewRecordSet:
Dim MyNewRecordSet As MyRecordSet <WebMethod()> _
Public Function GetDataReturnList(ByVal sql As String, ByVal sTableName As String) As MyRecordSet
MyNewRecordSet.lstOfDataInRecord = New List(Of String)
[Code] .....
Anyway, I see it's a conversion issue, but not sure how to resolve it. This is my first attempt to use a public structure in a web service and receive a return on it from my app.
I've this code, but there is a problem with setting values. I get "null object" error. how to work properly with functions.
Public Structure Results
Dim Nickname As String
Dim Result As Integer
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I want my function to return a value of a structure. The function is supposed to change the values and then return the answers in one structured value. Here is my code... as you can see it does not work... it needs a LOT of things. I placed question marks were i am really lost.
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Say I do this
Public Function CheckWebCamVF() As BusinessProfilesBO.VFCheck
checkwebcamVF.isactive = true
return checkwebcamVF
[code].....
I seem to be getting null referance errors using the first one.I am trying to get my code as fast and as correct as possible
I want to know what implies to declare a function or a sub using public or directly Sub / Function i.e.:
Public Function Whatever()
' Process
End Function
versus.
Function Whatever()
' Process
End Function
explain me the difference between them? I'm new to visual basic, and I need to know the very basic things in Visual Basic allowing me to become a professional User
View 8 RepliesI have inherited some god awful vb.net code and having trouble trying to work out the generics for looping through the current structure in place.
here is a snippet of the struct
Public Structure ApplicationDetails
Dim ID As Integer
Dim AgentID As Integer
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but i am not sure on the syntax to set the value and when trying to get the type i get item.GetTYpe() is not declared.
I am trying to return a structure from a class.vb file to an aspx page. Is this possible, if so how would you do it in the aspx page and the class.vb file?
View 1 RepliesI have created a class called clsLogIn [code]Now I am on a different form, frmSchedule, and I want to get the ProviderNum property from clsLogin into a text box.
View 10 RepliesMy issue is regarding overloaded functions of the already provided IIf function that would handle specific types. As you all know the IIf function provided returns objects, rather a specific type so for my needs I created a few overloaded function to do just that but with a specific type in mind. So having said I have IIf functions for types of booleans, strings, bytes, integers, etc etc.
Now my problem is when I'm trying to pass a byte value to this function that would return one of the two byte values. When I do this the designer keeps confusing my values as an integer value and calls for me to convert it to a byte. If I did this then it would defeat my entire purpose for creating these functions-which is to avoid any conversions. The only way I can solve this is by converting the whole statement itself or the true/false parameter parts individual to specify to the designer that these values are bytes. I'm just hoping there's a way of identifying the difference between bytes and integers..
In what situtations is it best to use reference arguments to return values?
Sub Example(byref value as integer)
value = 3
End Sub
In what situations is it best to return the value (perhaps in a structure for more complex types)?
Function Example() as integer
return 3
End Function
So I've run into a case where I have a class that can store either a string or a numeric value, and I want a single property to return one or the other (it would be a failure for both to be set). I'm using a custom generic class to deal with the numerics (so I can use signed, unsigned, and nullables), and will be storing the string in a separate variable.
In theory, if overloading could be done based on the return type, I could do this quite easily. But .NET currently disallows this. So I am wondering if there is some other really-far-out-there trick (outside of MSIL generation via Reflection.Emit) that could accomplish the same thing.
I'm open to ideas via delegates, pointer dereferencing, generics, mystical rites, etc. Also interested in any thoughts or pros/cons of such possibilities as a learning tool. If using a standard Object is the only way to achieve what I want, then that's fine with me. But It's difficult to find the correct set of keywords to hunt down this kind of capability on Google, so I thought I'd ask here before I moved on to doing something else on the project.
Some codes here on how could I validate my datagridview? I mean, a certain column on my datagridview should accept integers only, otherwise, it will return a messagebox. Kindly include on which event it should be posted.
View 17 RepliesI'm trying to return code like this (can be found here):
{"hotspots": [{
"id": "test_1",
"anchor": { "geolocation": { "lat": 52.3729, "lon": 4.93 } },
[code].....
I am trying to use the right function in VS 2008. I am simply trying to get the right 5 characters of a string.
VendorID = Right(cboVendors.Text, 5)
I am getting an error when I type that:
Error1'Public ReadOnly Property Right() As Integer' has no parameters and its return type cannot be indexed.
I tried coding for an application that will display the positive integers, negative integers and zero entered in a inputBox. for some reason it keeps crashing down.here is my code. paging all visual basic professionals. [code]
View 6 RepliesJust so it's known, this question is mostly academic, even though I tried to use the concept in a real-world solution. I realize the example is contrived, but I believe the concept is valid.I want to write some fluent code like this:
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I realize that I can't force an anonymous type into a specific type (like implementing an interface or some other class), and I don't want the overhead of defining a specific class just to match my desired fluent name with the actual method name. So I was able to make the code work like this:
copy(my_first_file).to.Invoke(my_second_file)So there is no IntelliSense or type awareness there, and I have to include the Invoke in order to have the method run. How can I get more type safety and exclude the Invoke method, under these constraints: Anonymous Type returned from Method No additional classes or interfaces Preferably, I do not want to pass in another parameter to the copy() method that tells what type to return, unless copy becomes a generic method (but I think that means defining another class/interface, which I don't want to do)
I have a public function to call default email client.Public Function OpenEmail(ByVal EmailAddress As String, Optional ByVal Subject As String = "", Optional ByVal Body As String = "") As Boolean
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I have a public function to call default email client.
Public Function OpenEmail(ByVal EmailAddress As String, Optional ByVal Subject As String = "", Optional ByVal Body As String = "") As Boolean
Dim bAns As Boolean = True
[code].....
Here's what i would like to know, i will post my layout below.
CODE:
Right what i want to do is when i click my button it goes to the timer3.tick.. i then want it to use the public function on the listbox's.
If I have a Windows Application WinApp that has a public function pubFun, how can I call it from a different windows application --> WinApp.pubFun() ?
View 2 RepliesI have to create a program that finds the total cost for pizza, fries, and soft drinks, and places that in a list box. So far, though, I'm stuck. I have this code so far:
Public
Class frmBill
Private
Sub btnTotal_Click(ByVal
sender As System.Object,
[Code] .....
The errors that I am getting are:
"Argument not specified for parameter 'D' of Public Function totalBill(P As Double, F As Double, D As Double)
"Argument not specified for parameter 'F' of Public Function totalBill(P As Double, F As Double, D As Double)
"Argument not specified for parameter 'P' of Public Function totalBill(P As Double, F As Double, D As Double)"
For example we generally apply threading to make application faster and unnecessary timetaking not related to UI things can go in secondary threads.Now If I have a user control
This control contains a public function LoadControl() Function is called from the form which is using the user control In side function
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I am trying to create a Public Sub / Function that will allow me to pass certain variables into it and this will affect the output. e.g.
DIV ID = InfoDiv
CSS Class = "Warning"
LBInfoMsg.Text = "An Error has occured"
DIV Visibility = True or False
I would like to type something similar in the code behind page:
InfoMsg(InfoDiv, "warning", "An Error has Occurred", True)
Public Sub InfMsg(ByRef MyDIV As System.Web.UI.HtmlControls.HtmlGenericControl, ByRef CSS As System.Web.UI.WebControls.Style, ByVal strMessage As String)
strMessage = strMessage.Replace("'", "''")
MyDIV.Attributes.Add("Style", "warning")
MyDIV.Visible = "True"
End Sub
Class A gets, as part of it's constructor, a pointer to class B and saves that pointer in a private variable. Class B exposes a public function, F. I'd like for class A and all classes that inherit from class A to NOT be able to call B.F.The idea is that class A will implement its own version of F, one that calls B.F, but the rest of the code should not be calling B.F. If it matters, the two have different function signatures.Maybe another way, like a class C that inherits from class B and hides the public functions? (Cant that even be done?)
View 2 RepliesI have a public function declared in my code-beside on default.aspx.vb. I needed to add a second page to my project and copied and pasted that function into the second page, but when I test the page I get an error saying there's a conflict with the same public function on the default page.
If I remove the function from the second page, i don't get the error, but will it still be accessible if called on that page, even though it's on the default page? Or do I need to place it somewhere else so that it's accessible to both pages?
I have a Function for checking the input in a textbox and only allowing Numeric & Backspace; everything works fine so far. My form is for financials and it has about 20 textboxes; they all receive Numeric only data; there is NO alpha data on the entire form required. Note in the snippet below that I don't even need a decimal point as well.
Is there a way to handle ALL textboxes on this form without having to place the Function call in each textbox KeyPress event. took a long (5 year) hiatus from developing VB6
Public Function TrapKey(ByVal KCode As String) As Boolean
If (KCode >= 48 And KCode <= 57) Or KCode = 8 Then
TrapKey = False
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I made the changes from this:
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to this:(the 'End Function' says "Function 'GetFolderPath' doesn't return a value on all code paths. A null reference exception could occur at run time when the result is used."
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I have a situation where I have several VB.NET Modules in the same Logical-Module of a large application. I would like the update function of each module to be public, but I would like users to be forced to qualify the function call with the module name.
ModuleName.Update()
instead of
Update()
Is this possible?