How To Handle Variable Type (parameter & Return Value)
May 25, 2011Is it possible to replace these two functions
Function f1 (s As String) As class1()
Dim a() As String = Split(s)
Dim b(UBound(a)) As class1
[code].....
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Return Type Of Parameter Is Not CLS-compliant
Jun 28, 2010I have a base class with a static function that returns a typed dataset. I have several classes that inherit the base class with a non-static function that returns the same typed dataset. On these methods I get the 'Return type of parameter yadda
is not CLS-compliant' I don't understand where this is coming from. I have non unsigned integers/etc. in this dataset.
Forms :: How To Handle Each Variable Type Individually
Apr 11, 2010I have defined 5 variables T1, T2, T3, T4, T5 As Double and set them all = 0. On a form I have a enter information button. Each time the button is pressed I want to assign a different variable, to a text box input. For instance, If I enter 1 that will become T1, and then if I enter 2 and press the button again, that value becomes T2.
I have tried
If T1 = 0 then
T1 = textbox.text
End if
If T1<>0 And T2 = 0 then
T2 = textbox.text
End if
I have tried to use 'else' statements and all kinds of things like that to no avail. I can get the first two variables correctly assigned but three is impossible with my current understanding. Is there a way to do this, or do I need 5 buttons, so that I can control which variable is assigned? To be correct my intent is to create an observation with three variables each time the button is pressed.
For example, the first button press will result in three variables being assigned a value other than 0; they are T1, B1, and R1. I have just begun to understand the concept of arrays and am wondering if that may be the way to go in this situation. I was just going at this in a newbie way I'm sure and trying to handle each variable type individually, and figure out all the T* variables and move onto the B* variables.
Custom Function Return Type + Input As Variable Datatype?
Dec 1, 2010I'm wondering whether its possible to have a function's return type and input arguments as a variable.
For example this function:Private Function MyFunction(ByVal argument1 As VariableType) As VariableType
[Code]...
Sql - .NET Using A SELECT Statement To Return A Row Where A DateTime Column = Variable Of Type Date?
Jun 20, 2011I am using OleDb, trying to do this:
Dim d as Date = DateSerial(Year(rptDate), Month(rptDate), 1 - 1)
Dim conn as OleDbConnection = new OleDbConnection(connStr)
Dim cm as OleDbCommand = new OleDbCommand()
[code]....
I know that d is the same date as the one in SQL server, specifically 3/31/2011 12:00:00 AM.
VS 2008 Template Function That Can Receive Different Parameter And A Type Parameter
Mar 9, 2011I want to have a "template" function that can receive different parameter and a type parameter, like:[code]But Vb told me that tupeList is not defined... is there a way I can do that?
View 2 RepliesCast Array In Object Variable To Type In System.Type Variable?
Apr 14, 2010I have this function:
Public Sub DoStuff(ByVal type as System.Type, ByVal value as Object)
End Sub
The 'value' argument is always an array of the same type as 'type'. How can I loop through the values of the array?
I'd like to be able to do something like this:
DoStuff(GetType(Integer), New Integer(){1,2,3})
Public Sub DoStuff(ByVal type as System.Type, ByVal value as Object)
//Strongly types arr as Integer()
[Code].....
Invalid Parameter: Name Handle Exception
Nov 23, 2009I am using VB.Net code to print barcode label in Zebra TLP 2844 printer. And the printer is connected to system by USB port. When i execute the code i get an error "Invalid Parameter : Name handle" in the line outFile = New FileStream(_SafeFileHandle, FileAccess.Write) . As this is a USB port So i shared the printer and used the UNC path. But still i get the error. Below is the complete code
[Code]....
Sql - Passing Parameters To A Stored Proc Accepting In Parameter Of Type XML Type?
Jun 7, 2011I have a storedproc accepts parameters in XMLtype as
CREATE OR REPLACE PROCEDURE GetDetails(
p_para IN XMLTYPE,
[code].....
Convert String Value To Type And Pass As Type Parameter.
Nov 19, 2010i am getting all filenames from a directory.parsing out the directory names & the .vb extension then converting those filesnames to classes.Every file in the LPCriteria direcotry is its own class with a "Evaluate" function.[code]
View 1 RepliesC# - Using ObjectDataSource And DataObjectTypeName - Handle Delete Methods With Just An Id Parameter?
May 27, 2009If I have an ObjectDataSource setup like:
<asp:ObjectDataSource
ID="ObjectDataSource1"
runat="server" [code].....
How do I get the objectdatasource to use the Delete method with the parameter that is not an Employee object? what is the recommended alternative architecture?
Edit:
To clarify, I want to use the method signature on my data/business object as shown above, however if I try to allow an Employee object to be passed into some of the methods using DataObjectTypeName, then I seemingly lose the ability to have some methods take just an integer id for instance.If I do not use the DataObjectTypeName, then I have to place all the method parameters in the ObjectDataSource and change the methods on the data/business object to match, this seems like a bad design choice because as the Employee object changes I will have to update each of these methods.
Cast A Variable To A Type Represented By Another Type Variable?
Oct 10, 2009I'm aware that questions like this have been asked before and I doubt it's possible, but I just wanted to make 100% sure that it isn't.In VB.net or C# (either language, it doesn't matter), I want to cast a variable to a type represented by another Type variable. Here's an example of the kind of code that would be needed in C#:
Object castMe = new Foo();
Type castTo = typeof(Foo);
Foo beenCast = (castTo.GetRepresentedType())castMe;
[code].....
.net - Get A Base Class Method Return Type To Be The Subclass Type?
Nov 23, 2009I have a copy function that I'd like to override in subclasses to return the type of the subclass. Here are my interfaces:
Public Interface IBase(Of T)
Function Copy() As T
End Interface
[Code]....
Error:Events Cannot Be Declared With A Delegate Type That Has A Return Type?
Apr 22, 2010I have a delegate and its event in C# as below:
public delegate UsernameCredentials UsernameRequiredEventHandler( object sender, string endpoint );
public event UsernameRequiredEventHandler UsernameRequired;
On Converting the above code in VB.Net as follow :
Public Delegate Function UsernameRequiredEventHandler(ByVal sender As Object, ByVal endpoint As String) As UsernameCredentials
Public Event UsernameRequired As UsernameRequiredEventHandler
I am getting error on the above line saying that "Events cannot be declared with a delegate type that has a return type".I understand that this is not supported in VB.Net.
Handle Return Value Of Sql Query And Store In Database?
Aug 22, 2010How to handle the return value of the sql query and store in the database?
View 1 RepliesXml - Using XmlReadert How To Handle When ReadToFollowing Doesn't Return A Value
Apr 19, 2011If I use
xmlCommand.ReadToFollowing("A")
valueA = xmlCommand.ReadElementContentAsString
xmlCommand.ReadToFollowing("B")
[code].....
.net - Will Sqldatareader With Using Statement Ever Return An Output Parameter
Aug 21, 2011Here's a simple code snippet of a larger function as an example.
Using conn as New SqlConnection("conn string")
Using find as new SqlCommand("ExampleProc",conn)
Dim rParam as new SqlParameter("@RESULT",SqlDbType.Int)
[code]....
I know the Output parameter is returned after the SqlDataReader is closed. From what I think I know, the Using statement will call .Dispose on the SqlDataReader, so will that basically wipe out the Output parameter? If so, what is the best method to call a SqlDataReader that also contains Output parameters that closes and disposes everything correctly? Let me add that based on what I've read you only have access to the Output parameter using a SqlDataReader after you call .Close on the SqlDataReader.
Return Object As Parameter For NHibernate Entity?
Nov 2, 2010I'm writing a solution where the data entities are passed to clients using datasets through a WCF service, with nHibernate as ORM. My predecessor has written some translator classes, converting datasets to entities and vice versa. In most cases he's declared the return object as a parameter for the object.
For example:
Public Shared Function CreateEntity(ByVal ds As DataSetObject, ByVal entity As EntityObject) As EntityObject
Dim row As ds.EntityObjectRow = ds.EntityObject(0)
entity.Id = row.Id
[code]....
He's not with the company anymore, so I can't ask him why he's done it this way. Hence my question here. Is there some performance gain, or traceablity thing with nHibernate by using the first implementation rather than the latter?
VS 2008 Way Of Declaring A Parameter In Function And Return A Value?
Apr 26, 2010I have created my own ListViewItem class, and added some custom properties to it of attributes. What I have at the moment is a tooltip which shows all of those custom properties (about 18 of them).What I want to be able to do is if multiple are selected, to show a tooltip, but if a property (say Title) for all of them is "My Title" it will show that, otherwise if they are different, I would like it to show "VARIES"Is there a way of declaring a parameter in my function and return a value? [code]
View 1 RepliesProgram Function - Says, "The Type For Variable [variable] Will Not Be Inferred Because It Is Bound To A Field
May 18, 2012Public Class Form1
Dim x, c, number(0 To 19) As Integer
Dim s As Integer
[CODE]...
The variables in the brackets [example] do not actually have brackets in them in the original code. These are where the issues are. For both variables, it says, "The type for variable [variable] will not be inferred because it is bound to a field in an enclosing scope. Either change the name of [variable], or use the fully qualified name (for example, 'Me.[variable]' or 'MyBase.[variable]')." Now, I'm not entirely sure if this is a stupid question or not, as I'm used to VB '98 because that's what we use in my programming class at High School. let me know why this won't work.
-Note: The intention of this program is to continually loop the generation of numbers for this list until I tell it to stop. Button1 ends the program, Button2 generates the list one time only, Button3 is supposed to loop the generation of the list, and Button4 is supposed to end the loop, but not the program.
Variable Naming Conventions To Illustrate Variable Type And Where Variables Are Declared
Aug 24, 2009I am looking for a good resource on variable naming conventions to illustrate variable type and where variables are declared. So I will have public variables, Private variables, private or local variables. I also may want to declare variables with the same name in different class code (i.e. in the code behind different forms). I am assuming good coding would dicatate a prefix for declaration location.
View 4 RepliesWrite A Variable To A File That Has A Different Type Than The Function Assigned To The Variable
Sep 17, 2011I have the following code that I am using to parse out a test file. I am getting variable conversion error in Sub Main() when I assign file = Read(). The return value of Read() is a TextFieldParser type. How do I assign the proper variable type to "file" so I can write the output to a text file?
Function Read()
Using MyReader As New FileIO.TextFieldParser("C:UsersColinDesktopParse_Me.txt")
Dim currentRow As String
[Code].....
VS 2010 Get Handle Of Variable?
Aug 28, 2010I need to get the handle of a variable. How do I do this?
DEVICE_PARAMETERS = New PresentParameters
ZeroMemory(>>Handle of DEVICE_PARAMETERS<<, Marshal.SizeOf(DEVICE_PARAMETERS))
-Ren�
Create A Function Which Have Either 1 Parameter With A String As Data Type Or 2 Parameters With Double As Data Type?
Jun 11, 2012I need to create a function which have either 1 parameter with a string as data type or 2 parameters with double as data type.Something like the substring method.
View 2 RepliesStatically Type Local Variable To Be Static Type Of Expression On Right Had Side Of Assignment?
Dec 22, 2009E.g. how do I get VB.Net to statically type a local variable to be the static type of the expression on the right had side of the assignment?
View 1 RepliesExplicit Conversion - Convert The Variable D From Double Type To Integer Type And Store The Result As 132
Oct 22, 2009I want to use explicit conversion (CType function in VB.NET) to convert the variable d from double type to integer type and store the result as 132.
Imports System.Console
Module Module1
Sub Main()
[CODE]...
This is my code. But Visual Basic tells me an error: Error1Type 'i' is not defined.C:\Users\mihaispr\Desktop\Conversie explicita\Conversie explicita\Module1.vb1922Conversie explicita
How To Handle Variable Number Of Textboxes In Asp.net
Jul 19, 2010I'm developing an app that should allow the client to add several content sections to a page (in tabs). However I haven't found a way to easily create a form for editing the tabs.Assume for now that a tab just contains a title. I have a form that adds a tab, that's simple. But I also want a form that displays a text input for each tab and allows the titles to be edited and saved. I'm struggling with two main concepts:How to dynamically display the fields after grabbing the tab data from the database (each tab has its own row in the table).How to loop through the submitted data and update each tab in the database.How to select a particular text field from the number (e.g. given "1", how to select the element with ID "TabTitle_ 1".[code]I thought something like TabTitle[0] would be acceptable and allow for easy looping (as it does in PHP) but it's "not a valid identifier" apparently.It's very possible I have the approach completely on its head.
View 1 RepliesReporting Services - Input Parameter Needs To Return All Records If Left Blank
Jul 9, 2009I have an input parameter for my stored Proc, Instead of choosing available values from a drop Dwn, the customer wants an empty input box that when left blank returns all records. the parameter type is numeric(6,0) in the Db. I have not found a way to leave the input blank and retrieve all records. my default value for all records is '-99' and also is declared as the default value for the param in the proc.
View 1 RepliesC# - Copy Object Of Type AA To An Empty Variable Of Type BB?
Feb 15, 2010Writing an asp.net mvc app and i have something like this...
Public Class AA
'... has some variables...
End Class
Public Class BB
[code]....
So, now in my program, i just want to copy object of type AA to an empty variable of type BB?it makes sense to do this, as i expect all the fields in AA type object to be copied to the newly created BB type object, and the ExtraVariable in the BB type object i would (will) just assign a value to it later (after the copy) on my own time!!I know copying BB type to AA type would not be appropriate as there would be lost data!But im trying to copy AA to BB, I've used both DirectCast and CType to do this, and i keep getting "unable to cast" error!
Note: I'm using vb.net (but can read c#, no problems)
Handle EventArgs On Variable Or Not Yet Created Controls
Dec 6, 2011I'm trying to add subs that will handle MouseOver events on textboxes that don't get created until after the program starts.
Each textbox gets created with a unique number attached to it like this...
AptTextBox0
AptTextBox1
AptTextBox2
etc...
Depending on how many are needed. But I never expect more than say... 15 at any given time.
Is it possible to handle MouseOver (or any events for that matter) if they don't exist until later.
I tried this but it didn't work....
I added this is the Designer code....
Friend WithEvents AptTextBox0 As System.Windows.Forms.TextBox
Friend WithEvents AptTextBox1 As System.Windows.Forms.TextBox
Friend WithEvents AptTextBox2 As System.Windows.Forms.TextBox
[Code]....
But it doesn't do anything. I don't get errors, but apparently it's still missing something to properly handle the events.
