Populate A List(Of Object) In A Class Method, Where The List Was Passed To The Method As A Parameter

Aug 13, 2011

I'm trying to code a class of RandomNumber. One of the class methods needs to populate a "List (Of RandomNumber)" ... which was passed as a parameter to the method ... with 10 random numbers between 1 and 50. DEAD SIMPLE :)

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Passing List (Of ChildClass) As Parameter To Method Expecting List (Of ParentClass)?

Apr 12, 2010

I have implemented inheritance for two parent classes called Table and Field. Each parent class has several child classes. In the Table parent class, I created a method that expects parameter List(Of Field).

I get an error when trying to pass in parameter List(Of ChildField) to the method that expects a parameter of List(Of Field). The error message is as below:

Value of type
'System.Collections.Generic.List(Of
com.hlb.icisbatch.data.ChildField)'

[Code]....

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Get Type Of Derived Generic List Class From List Item Method?

Mar 23, 2011

Public Class notifierMain
Public Class Contacts
Inherits List(Of row)
Public Sub New()

[code]....

When I debug this winforms application I get curType = "notifier.notifierMain+Contacts+row" I want to the Validate function to know it is in MyContacts. How do I do this?

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AddressOf With Parameter - Method Which Requires A Parameter To Be Passed In

Mar 1, 2009

I have a method which requires a parameter to be passed in. I would like to use the Addhandler to call the method through a dynamically created button control's click event.

When I include () in the AddressOf, VS complains: 'AddressOf' operand must be the name of a method (without parentheses).

When I exclude the brackets, VS complains: Method '...' does not have a signature compatible with delegate...

My code:

CODE:

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C# - From A List<object> , ToString() Them Just When They Are Primitive Types Or Have This Method Overridden??

Feb 15, 2011

Given a list of objects, I'd like to print a string version of them just in case the object.ToString() result is a relevant string.By that I mean I don't want to get things like:

obj.ToString() -> System.Collections.Generic.List`1[MyLib.Dude]
obj.ToString() -> System.Collections.Generic.Dictionary`2[System.Int32,System.DateTime]
obj.ToString() -> System.Byte[]

But I want to get things like:

obj.ToString() -> Hi
obj.ToString() -> 129847.123
obj.ToString() -> Id = 123

What should be the best way to implement this in a method:

Public Sub PrintInterestingStuffOnly(ByVal coolList as Ilist(Of Object))
For Each obj in coolList
'insert solution here

[code].....

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Create A Remoteable Object With Method That Sums Up Elements In Array List

Jul 27, 2010

I need to create a remoteable object with a method that sums up elements in an array list. How do i go about it?

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How To Searching Part Of Object Inside Array List Without Looping Method

Feb 10, 2012

I save the client data into an array list. How to find part of data(currentIP) inside the array list(clientList) with fast method? [code]

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C# - Class Name And Method Name Dropdown List Is Missing (visual Studio Setting)

Sep 17, 2009

Does anyone know how to get my class name and method name dropdown lists again? It's the dropdown lists that are usually above the code. It's just a setting but i can't seem to find it. I don't want to reset my setting btw. I shouldn't have to.

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Get List Of Table Fields When Using A Class (function Or Method) In Design Time?

Aug 2, 2010

Let say I have a function inside a class which require 4 parameter (table name,field name,field value, return field) When I use this function my form, such as

myclass.Search("customers", <-- after pressing the "," a popup list will be displayed that contain all the fields in "customers" table.

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Strongly-typed Generic Method Invokes Its Argument's Base Class Method Instead Of A Shadowed Method In T?

Oct 19, 2010

Consider a MyForm class that contains a shadowed implementation of Show(). It also contains a CreateForm() method, which accepts an instance of the form and calls the shadowed sub:

[Code]....

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Create A List Of A Generic Type That Will Be Passed As A Parameter?

Feb 14, 2011

say I have two POCOs I'm using in EF code first

Public class C1
property F1 as integer
End Class
Public class C2
property F2 as String
End Class

I want to have a function that will create a list either of C1 or C2, to be used in some generic operation, such that

[Code]...

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Possible In .Net To Catch All Unhandled Exceptions From Any Method In A Class Before Its Passed Up The Call Stack?

Oct 19, 2011

I would like to catch any exceptions from any method in a class so that I may record class specific data to the exception for logging before it is passed up the stack. I know that I can put a try-catch in every method of the class, but there are many methods and It seems there should be a more efficient way. Example of what I am currently doing:

public class ClassA
{
private int x;

[code].....

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Method/sub That Takes An Object As A Parameter?

Dec 23, 2010

I have a method/sub that takes an object as a parameter, then it scans through a panels controls and trys to find if it is in the window.

Public Sub removetype (ByVal findobject As Object)
Dim types As System.Type = findobject.GetType
For Each ThisCtrl In Flow.Controls 'flow is a panel

[Code]......

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Method Parameter Name Same As Class Property?

Apr 21, 2010

Is it accepted to have a method parameter named the same as a property? At least it gives no error, even if in the same letter-case.. How does the compiler distinguish? does it always prioritize the local parameter?

[Code]...

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Pass An Object As A Parameter To A Fortran Method?

Aug 25, 2010

I'm currently working on being able to import a DLL written in Fortran into Visual Basic. I've got all the basics down, so now I'm trying to take it a step further. The title basically says it all, but I'll explain what it is I'm trying to do anyways.

For kicks and giggles, let's just assume I want to pass an object that has three double values in it, possibly representing a point in space in three dimensions. In my Fortran method, I want to take that object, print out the x value, then change the x value to 7.5. Here's my Fortran code that does just that.[code]...

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Getting A Method Name And Add It To A List

Jan 4, 2012

I am trying to get a methods name and add it to a list. I had a look around and came across actions. So far I have the following:

Protected Function MethodToString(method As Action) As String
Return method.Method.Name
End Function
...
Me.Stages.Add(MethodToString(GetWeightFromSID()))

but it does not work when called as it says expression do not produce a value.

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Get The Name Of Parent Method/class/file Name Inside Other Method Call?

Feb 16, 2010

I will try to explain what I need.Let's say that I have a class like this:

Public Class Example1 Public Sub ToBeCalled()

[Code]...

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Pass A Method Like A Parameter Of Another Method

Feb 4, 2011

Is there a way to choose between different methods and pass one into another method ?

Sub conditionnal_binding(ByVal list_box_reference As ListBox, ByVal list_box_final As ListBox, _
ByVal dico_source As Dictionary(Of String, List(Of String)), _
ByVal my_methode As ??? )
' DO SOMETHING
End Sub

I wrote ??? because I don't know how to call another method inside a method.
I would like to choose between different "sub-methods". Here is how I would like to use my method :

conditionnal_binding(ListBox1, ListBox3, HTML.dico_basic_attribut, best_method)
conditionnal_binding(ListBox1, ListBox3, HTML.dico_basic_attribut, some_method)
conditionnal_binding(ListBox1, ListBox3, HTML.dico_basic_attribut, another_method)

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.net - Add Method Of The List Function?

Jan 2, 2010

I have a data structure (which is a class) called user_class and I want to load all the users data from a database.Currently I have

While SQLreader.Read()
Hold_user.username = SQLreader(0)
Hold_user.BlahBlahBlah = SQLreader(1)

[code]....

Where return_value is a List of user_class and hold_user is an instance of the same class.

Dim return_value As New List(Of user_class)
Dim Hold_user As New user_class

As the while statement loops through the read data, SQLreader(0),(1) and (2) are updated with new data, however they also appear to be updating the stored values held in return_value....

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InvokeMember Method List?

Feb 20, 2012

I am using the HtmlElement's InvokeMember function and was wondering if there is a nicely formatted list of all the strings that can be passed into that function.So far I know about these strings that can be passed into InvokeMember:Click, Focus provide a link to a list of all strings that can be passed into the InvokeMember function or write them down?

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Get Name Of Class Without Instantiating Object Or Having A Static Method?

Feb 22, 2011

I hate to see the name of the class used as a string parameter like "FileDownloader" in the code, and I would like to use something like this FileDownloader.Name(), where FileDownloader is name of the class.Only problem is that I can't find out how to do that without instantiating object or creating a static method..Is there a way to get a class name in .net without having the object instance and without creating a static method that returns the name of the class?

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Can A Generic List Of T Be Passed To Function Similar To Way An Array Is Passed?

Mar 23, 2012

I want to pass a List of T where T is an object I've created that has about ten properties (strings, dates and integers).The lst passes to the function successfully. I am also passing an New T of the Object (itm as T).I can see all the values (see image below), but because it's generic I cannot seem to retrieve the property values and I cannot figure out how to iterate through the properties of each itm as they are retrieved in the For Each.[code]

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Scope Of .NET's List(Of T).Reverse Method

Apr 7, 2009

I've got a simple function that takes a List parameter. While working with it, it copies it and reverses the copy using .NET's List(Of T).Reverse method.

[Code]...

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Using TrueForAll Method In Generic List?

Jun 7, 2009

I have a class myClass. MyClass has a property myName. I have a generic list myList(of myClass). I have to check if value of myName in all myClass objects in myList is same and is equal to a string myString. I have created a method:

Private Function IsMatching(ByVal objMyClass As MyClass, ByVal strMyString As String) As Boolean
If objMyClass.MyName = strMyString Then
Return True
Else
Return False
End If
End Function
Now I want to use is TrueForAll method of Generic list. How can I use it ?

If there was No second Parameter in IsMatching method, I could have simply used
myList.TrueForAll(AddressOf IsMatching)
But since there is a parameter strMyString, I dont understand how can I use IsTrueForAll method. How can I use IsTrueForAll method in this scenario.

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Populate Class/List And Use Globaly?

Nov 1, 2009

I am probably not even saying it correctly when I pose the question.

I have this simple class (starting out)

Public Class Players
Public Name As String
Public Sub New(ByVal name As String)

[Code]....

I'd like to be able to use players globaly thru-out the project. So if I navigate away from the form that created it. I can access it again.

Dim players As List(Of Players) = New List(Of Players)

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Forms :: Form Object Access From Class Method

Oct 22, 2009

I want a string and a listbox, both which are in a form to be modified by an instance of a class method. Should (could I):

1. Pass the entire form to the class method as parameter.

2. Pass the listbox and the string to the method as parameters.

What's the best approach to get access and modify this string and listbox on the form.

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How To Use BindingSource.Find Method Alongwith .Net Object Class

Mar 7, 2011

I want to search particular item in Binding Source for which i use BindingSource.Find() method, but it throws an exception "This operation requires an IBindingList". My binding source is bind to a .net class object.. I searched over the internet, but could not find the clear solution to achieve this task. The sample class code is given below:

Imports System.ComponentModel
Public Class Department
Private _code As Long

[Code].....

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Populate Listbox From Items In List Object?

Jan 4, 2012

trying to write an updateview method to basically clear the contents of the current listbox and then loop through a list of objects and pass 2 items from each of the objects in the list into the listbox.This is what I have so far

vb.net
Public Sub updateview()
holidaylistbox.items.clear()

[code].....

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Error: Expression Is Not An Array Or A Method And Cannot Have An Argument List

Aug 4, 2011

i have these 3 sets of code that are giving me INT() errors. Error: Expression is not an array or a method, and cannot have an argument list.

Code1:

Private Sub Form6_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim Browser As New WebBrowser

[code]....

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Fastest Method To Load A List Into ListView Control?

Aug 14, 2011

When ListView is not in Virtual mode the following method seems to be the fast method to load a large list into ListView:

Dim items As New List(Of ListViewItem)
Dim alllines as String()=System.IO.File.ReadAllLines("FilePath")
For each line as string in alllines
Dim item As New ListViewItem
item.Text = line
items.Add(item)
Next
ListView1.Items.AddRange(items.ToArray())

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