Pass A Variable's Name Along With The Value When Passing Through Functions?
Jul 6, 2009
I want to know if it's possible to retrieve the variables name from when it was passed into a certain function. For example, if I call parseId(myId) to a function with the signature parseId(id), i can obviously retrieve the value of 'id'. However, is there any way I can retrieve 'myId' as a string (without passing it as another value)? Specifically in vb.net, but I'm interested in how it would work in any given language.
I'm trying to pass an array from a 2D Array to a function that takes a 1D array, but each time I do I get the error Number of indices is less than the number of dimensions of the indexed array.. I know using a structure would solve the problem, but unfortunately the assignment is to use a 2D Array instead of a structure. I've declared the 2D array as such:
Const MAX_ARR_SIZE = 63 Public HouseholdCollection(MAX_ARR_SIZE, 2) As UInteger Const IDENTIFICATION_CODE = 0 Const MEMBER_COUNT = 1
I would like to have custom methods to pass data between function, or to keep it in memory throughout the program.
Example:
Private function info() Addr1 = addr1.text Addr2 = addr2.text City = city.text
[code]....
Could I run this function towards the beginning of the program and use it throughout until the form is disposed? I can't seem to get the information to stick once I get out of the function, I will need to use the same information multiple times throughout the application so I figured if I could make a function to keep the info rather than declaring the 5 lines in every option but anytime I call the method, it fills it correctly then when I get back to the main function the info goes back to 'nothing'. is it possible to pass data around between functions like you could in Java?
topfunction(myarray, yourarray) dim function topfunction(byval array1() as integer, byval array2() as integer) dim function subfunction1(byval array1() as integer)
Code: ChartBuffer = GetCurrentChart(ChartBuffer) The error says Conversion from type 'Integer()' to type 'Integer' is not valid.
Apparently I have some type casting issues, the problem is I'm not trying to cast any types at all. I'm trying to set one array chartbuffer equal to the array returned from GetCurrentChart.
[Code]...
In the constructor of this class I am trying to set the buffer equal to the loaded chart because if I try to write information to a buffer that isn't already initialized, and then save it, it will overwrite stuff that might already be saved in the file as 0's or something, and I don't want it to do that. To prevent this from happening I'm simply going to initialize the buffer in the constructor by setting it equal to the loaded chart. Finally after that is all done I can write new information to the buffer and save it to the file without writing a mostly empty buffer (full of zero's) to the chart that is saved with information in it already.
The login process to one of my sites can get fairly long code wise, so i have decided to cut the process up into maybe 3 or 4 functions, instead of all the code on 1 page.
vb.net Function functionNavigate1(ByVal POST1 As String) Try
I can't get to pass structure as argument through subs/functions in different files of single vbnet project like I use to in earlier MS basic versions.[code]File "mysetup.dat" is reachable and data is saved correctly what I can see with HxD.But read part seem's to not work as expected. Please any help on reliable passing structure as argument without too much public elements based on upper example.
I have a number of unrelated subs and functions that do various things on my server (e.g. Lighting control, data caching, server maintenance, etc). They are all in various classes which I have coalesced into a single solution.My goal is to create a single, simple interface which each of these disparate classes can be integrated and called from a command line interface. Instead of hard-coding a longish case statement which parses arguments and passes them to the various subs, I wanted to make a generic class which can be instantiated with a minimum of information and put into a data structure. Ideally, adding a new function would involve:
1.) Providing the function pointer (Delegate). The delegates will have various signatures. This is the crux of the question.
2.) Providing ancillary info such as the command-line callable name, number of arguments, argument types, etc.
I have a 100% working class called "node" which is basically a hierarchical tree of node instances. I can use this to simply organize function calls in related branches. All is working quite well.NodeFunctionDelegate(ByVal args As String) As String.The node takes the arguments passed to it by the command line and sends it as the "args" string as comma-separated. The delegate function then needs to know how to split up these comma-separated values, type them, tryparse them and etc. It then must return some string.It works, but it involves writing a middle-man function stub which can receive the argument string from the node class, do the parsing and type checking, and then call the destination function.My goal is to eliminate this trivial middle-man function. The problem is, I can't figure out how to create a variable-signature delegate for the node class.
I would like an overview of System.EventArgs. I have an understanding of System.Object where I can pass data between subroutines and functions using Public Classes. I am curious what EventArgs do?
I am using a function that is provided by the maker of an IO device that I'm using and the call for this device turns on and off the 16 ports on the IO device by sending the value true or false to the board. The call is as follows:
I have a variable that gets a value in a js function. I need to get its value as a double into a vb.net variable. I have tried putting the variable into a label then grabbing it from the label in vb.net as shown in the code below:
Dim SecondName As String = SecondNameTxtBox.text()Is the above statement a correct one?Here I want to assign the value of the text box into tat "SecondName".If it's wrong, please tell me the correct way to write this statement.
in form 1 -> 1 button in form 2 -> 1 textbox and 1 button
when I click button in form 1, it will show the form 2..how can i pass the variable (data from textbox in form 2) into a variable in form 1 after clicking the button in form 2 ?
Not sure how to do this sub that passes a variable that is used in a Dim. fill_in_field("main_form.WebBrowser1") Sub fill_in_field(ByRef WebBrowser As String) Dim ElementCollection1 As HtmlElementCollection = WebBrowser.Document.GetElementsByTagName("input") End Sub Dim ElementCollection1 As HtmlElementCollection = WebBrowser & "Document.GetElementsByTagName("input")"
This is what I would like. Dim ElementCollection1 As HtmlElementCollection = main_form.WebBrowser1.Document.GetElementsByTagName("input")
I have a public variable that I declared in form1 of an application. I am trying to call that variable in form2 and then pass that variable in a sql query. If I declare:
Public Class Form1 Public payPeriodStartDate, payPeriodEndDate As Date
How then to I declare that variable in form2 and how to I pass it to my sql query.
Here is the code I have for form1: [Code]
and when I debug this form, no data will appear. I'm sure that it's something wrong with how I'm either calling the variable in form2 or in the query. Can anyone offer any assistance on this?
I have 2 dropdownlists, one is State and the second is City. I am trying to create it so, when a user clicks the State, the second dropdownlist is populated with City names from a datatable.[code]
passing a variable to a sub procedure by reference. Not sure I understand how it works. Here is the code.
Private Sub bntcompute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles bntcompute.Click Dim x, y As Double getnumbers(x, y) displaysum(x, y)
[code]....
Is the newly modified variable actually being Passed back? and If so where in the statement is it passed back. is it being passed back to the call getnumbers or is it passed back to the statement displaysum?
I'm using MVC2 with jquery.I'm trying to open a partial view in a jquery Dialog container, passing an itemID of an object to be deleted.What I'm doing to accomplish this is passing in an action that renders a view to jquery, which I can get to work without variables.f I try to pass in the ID of the object to be deleted, the action doesn't even trigger.
Here's my jquery code: $(function () { var itemToDelete
Doing a small project where I would like to be able to print the results of certain calculations. I want to open a new form where the data can be neatly presented and printed. I just can't seem to make the data get passed along to the new form when I open it..
