Asp.net - Number Of Variables Pass To Function?
Dec 5, 2011
if this is a dumb question. I don't ever have to write anything in VB.NET.But I am passing variables named "name" to a function and sometimes it may be 1 name or 2 names, etc. I want to check in the function if its only 1 name don't add a comma, if it's 2 names add a comma. Is there a way to get how many "names" there are?
EDIT: Added my ode to make my question a little more clear. sorry for not doing it before.
My Code:Public Function GenerateCSV(byval str as string, byval str1 as string, byval str2 as string, byval GrpName as string)
[Code]...
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Oct 12, 2011
I want to make an numerical integration method with takes in an analytic function and integrate it over a specific interval. For the numerical integration procedure I want to use some procedures in nr.com. The problem is that these are programmed in C++ and they uses functors to pass a function to the integration method. How can I do this in VB 2010?
I want to initialize the function (i.e. set a=1,b=0 for function y(x)=a*x+b) and then pass the function to the integration method. Then when the integration method call the function it only calls the function with one parameter (i.e. x since a,b is already set)
What is the best way to do this in VB2010?I want to make a general integration method where I can pass any single valued function and integration limits.
I have just started using VB, and from what I have found so far it seems like the tools you have is
- to us a delegate for the function
- to use a lambda expression for the function
- send a pointer/adressOf
- to create a function class/structure and submit this to the function
As for now I am most inclined to create a function-class. But I am not really sure how.F.ex. I make different classes for each "uniqe function" I want to integrate, but how can I pass them to the integration function when I need to specify the argument type in the integration-function-call?This seems like a basic problem which applies to many Math operations, so I think it would be very useful to clarify this.
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May 28, 2012
I want to make a GetAllContacts method which takes a sort parameter of type Func(Of Contact, TKey) which is the same type that the OrderBy method for an IEnumerable(Of Contact) takes.[code]"Too many arguments to extension method 'Public Function ElementAtOrDefault(index As Integer) As Contact' defined in 'System.Linq.Enumerable'." on the second parameter.
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Nov 10, 2010
I have 10 number in a set a variables. (say: 25, 33, 11, 4, 3. I want to get the biggest number in a message. How do I get it?
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Nov 28, 2011
1) when i click a listbox the values are displayed in respective fields from database.When i click PROCEED TO NEXT STEP in SLIDE-2 i get slide-3 where i get all values of Slide -2(FLIGHTID,FROM.TO)..Now the problem is when i press BACK and select new selection from listbox i am not able to get new values in this SLIDE-3 .I am getting the old values only..2) I declared public variables and sent all values to SLide-2 but when i press BACK and again select a value from LISTBOX i m getting no value in SLIDE-3
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Sep 6, 2009
I am having trouble passing variables between forms. Ive tried many methods but none seem to work. The first method I tried was to dim a public variable on the first form and call it on the second....no success
Form 1:
Public cliCode as string
cliCode = me.tbClientcCode.text
Form 2:
dim clientCode as string = form1.clicode
or
Form 2:
dim clientCode as string
On the Form2 load event....
clientCode = form1.clicode
With method 2 I created some classes on which form 1 loads and form2 access........
Public
Class frmClient
Private db As New ClientDataContext
Public clientInstance As New BusinessLogic.classClient
Public cliCode As String
[Code] .....
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Mar 6, 2010
Code below just allow me to pass only one variable at one time..the code below show how to pass the platelabel to label3..
how can i pass 2 variable in the same time..[code]...
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Nov 10, 2011
I know this should be easy but I'm either having a brain fart or I'm just more inept than I thought; probably a combination of the two.
Passing a value to a form on startup is a piece of cake, but I don't think I've ever had to do the following before in all my ooooh, 8 months of programming:
I have a main form with a button and a textbox. The button opens another form with a datagridview. What I want to do is pass the selected value from the DGV back to the textbox on the first form.[code]...
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May 20, 2009
I'm practicing creating a website for a test, although I am having trouble passing varialbes between the webpage with which the user logs in, and the web page in which the user sees/amends their details (it's an online bank).
Basically, I want the user to enter their customer ID and password, then click on the 'Login' button. When the user clicks on this, I want to display their details based upon their login info (ie their own, and nobody else's bank details).[code]...
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Mar 30, 2012
Im a student doing an assignment, how do i pass the value from a sub procedure to a function procedure....i want to pass the value from decSubtotal to a function procedure named CalculateDiscount; check out my code--
[Code]...
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Mar 25, 2010
I'm working on integrating my companies back-end system with paypal, on our current website.I have done paypal integration before, but this company is a middle-ware provider that allows us to hold an order until it ships.They have provided a very low-level example of implementation, but leaves some gaps in a true implementation on a back-end system. They have each method, essentially, have it's own aspx page that sends data to a page, that contains a javascript that autoposts to a url, with 3 hidden variables.
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Jun 21, 2012
Passing variables from .bat file to vbscript. I have .bat file that launches test.vbs. I need to pass variable defined in the batch file inside the .vbs file.
the batch file contains the code
set /p var= please enter the value: cscript test.vbs "%var%"
Where as test .vbs has the following codes
Dim StrText
MsgBox StrText
In my requirement value assigned to variable 'var' in batch should assign to StrText variable in the test.vbs and then it should display in VB message box.
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Aug 14, 2009
Is there a way to pass variables into a form that is shown as a dialog?Dim frmCreateCSVFile As New CreateCSVFile Dim returnValue As DialogResultreturnValue = frmCreateCSVFile.ShowDialog()
It doesn't seem to find the variables when I use the form name.
dtpFirstEndDate.Value = ControlChartsCSV.dtpFirstEndDate.Value
dtpLastEndDate.Value = ControlChartsCSV.dtpLastEndDate.Value
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Aug 10, 2010
I am writting a VB .net (3.5) applivcation which references a COM object. I can call methods on the COM object fine provided that they don't require any variables to be passed. I have been told that you can only pass a maximum of one varaible to a COM object, I really don't believe that it true
for example
objsession.connect()
works fine
but
[Code]...
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Sep 9, 2010
I have a project that I have set up a menu item Setting witch calls a Dialog calledDialogSettings on this dialogI have a tree view that selects a user controls that I can change the settingsbut I am having a problem passing variables to and from the main program to the UserControll so I'm unable to show what the setting is and unable to change the variable that the setting is for
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Nov 11, 2010
What is the best way to pass a variable from an OnClick event. To elaborate I would like to bind some data to the button and then when that button is pressed I would like to pass that data back to the code behind and do something cool with it.[code]...
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Aug 3, 2011
I have a gridview and use a session to pass the variables from the page to an edit page. This works perfectly, until you search for a number. When you search the correct record displays in gridview, but when you click edit, it passes the wrong record.
Private Sub gridview1_RowEditing(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewEditEventArgs) Handles GridView1.RowEditing
Session("wr_id") = GridView1.Rows(e.NewEditIndex).Cells(2).Text & "~/~" & _
GridView1.Rows(e.NewEditIndex).Cells(3).Text & "~/~" & _
GridView1.Rows(e.NewEditIndex).Cells(4).Text & "~/~" & _
[Code] .....
I realize not all of the code is pasted in here, because it would take too much space. Any Ideas? I'm guessing it has something to do with e.NewEditIndex
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May 22, 2009
I want to pass a few variables to another page. Currently I'm using response.redirect and passing the variables in the url. I'm not really interested in using Session Variables. Is there a way to pass hidden variables in .NET to a completely different form?
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Mar 14, 2012
I am developing an VB.NET application that reads data from the serial port and tcp socket, then I'm processing this data and store it in Database server. This application will be started all the time as long as the computer is started. On the server there is installed an apache server with some php scripts representing the "visual interface". From there the users can see the readed data from the VB app. The need is when an event appear in the apache server (such as button pressed), some data to be passed to the running VB app, and eventually trigger an event on it. I've considered some variants like start an timer that reads continuously some tables from the database that the php script writes onto, or read an xml ot text file, but I think that this may slower the communication and it is a source of exceptions or errors.
For example: An user opens a webpage, just to say test.php. On the page there is a button. The user pushes the button. The result of pushing the button has to trigger an event on the VB app and cause sending data trough the serial port or tcp socket. OR - The VB app has a timer that scans for pressing the button on the test.php.
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Jun 23, 2009
I am calling the function below from an Excel spreadsheet and the conversion from hex to decimal using the VAL function in the "manufacturer" variable below is coming back with a negative value. The VBA edition is 6.5.
Public Function decMEID(ByVal sKey As String) As String
Dim manufacturer As String
Dim serial As String
[code].....
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Apr 22, 2009
when i try do this:ListView1.Items(a).subitems(TextBox1.Text).text
i receive this error:Object variable or With block variable not set.
the number in the textbox exist this occor because the var type is not a valid number but how can i convert?
in other language i dont have this problem
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Apr 22, 2009
ListView1.Items(a).subitems(TextBox1.Text).text i receive this error: Object variable or With block variable not set. the number in the textbox exist this occor because the var type is not a valid number but how can i convert?
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Oct 15, 2009
When I am writing a sub or function that does some calculations etc. I often need a loop or a integer variable to count.
An example:
''' <summary>
''' Compare elements with the new data and perform all necessary actions.
''' </summary>
[Code]....
As you can see, variables like timespan, nullCount and seconds are declared within this sub.
My question is, is it better to declare these in the class? I can imagine that would boost performance.
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Jan 13, 2009
how many variables and controls (i.e. text box, listview, buttons, etc) can a VB program has without slowing down its performance?
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Aug 10, 2009
I have a variable called VarNUM which stores a number from 1 to 10. What i want to do with this is based on the current number stored in that variable call a different set of variables from a module with Public Structure ITEM1. It has the same set of variables for ITEM1 - ITEM10 but with different values. So ya in raps how can i use the number in one variable to access a set of different variables? Something like ITEM(VarNUM) then the set of variables that all have same name but with different values so that i dont have to go,
Code:
if VarNUM = "1" then
name = ITEM1.name
store = ITEM1.store
[code]....
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Dec 9, 2009
I have a statement:
dat.XoaNhanVien(Me.dtgcapnhatthongtin.CurrentRow.Cells(1).Value, message)
That is a function for deleting info. Now I want to create other function and get above function to parameter. I mean:
Public Function func(Byval func as " What type can be ?")
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Nov 20, 2009
I want to pass the entire array to the next function[code]...
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Sep 14, 2011
I'm trying to pass 2 bitarrays to a function that ANDs the bitarrays and returns the count of bits that are set to TRUE. However, something strange happens when I reference the bitarray from within the function and the results are non-sensical.
So I have output the bitarray contents before it is passed to the functionand they match the source data, then I output the contects of the bitarray from within the functiona and they are completely different.
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Mar 6, 2009
I'm working on a VB.NET DLL right now, and one of the functions I'm writing is supposed to take a file, and clip out an array of bytes (the method I've got works, and can be abstracted away here). What's the best way to pass a file to this function? Would passing a filename to it be best, or what would be the best way to accomplish this?
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Dec 20, 2011
I'm trying to give a default value to the register property method. This required a function, but passed as an object(delegate?).[code]....
I want to call that registerproperty method, but I don't know how I can do that in VB.net. I just need to pass along a new Person object and I thought this was the way to go[code]....
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