I have an associative arry with key,value pair. I want to set the value of an existing key to some variable that is ok. I can even check whether the value is null or not. But how to check whether the key itself exists or not?
View 3 RepliesHi can someone show me an example of a multidimensional associative array in vb.net. Need array to hold peoples name, there age and a few other settings. Want to be able to use a Dictionary to use People.Add.
View 1 RepliesI'm a PHP guy and in PHP I would do something like the following:$variable = array('0001'=>'value1', '0010'=>'value2');
I'm pretty new to VB.net so I'm wondering how to translate the above code to VB.net
I think I have to use a dictionary:
Dim variable As New Dictionary(Of String, String)
variable.Add("0001", "value1")
variable.Add("0010", "value2")
Is this the correct way of doing it or should I use something else for this?
How can I create the following array of associative arrays in Visual Basic (ASP)?
array(
array('customer' => 'khl', 'city' => 'bune'),
array('customer' => 'Kla', 'value' => 'Swa')
)
As per this illustration, I'm trying to increase the size of an existing array from 111 to 114 to be consistent with existing code. I need topreserve the existing values and add 3 new items to the end of the existing array of booleans,
View 3 Repliesis there in VB.NET something like this in php?:
$var["a1"]['name']="Mike";
$var["a1"]['nick']="MMM";
I tried hashtables, dictionary, lists and arrays in .net, all I could get is a simple key=>value array Is there a simple solution if not, is there a class or something for this?
I have a windows form that has 18 checkboxes named CheckBox1 -> CheckBox18. Also i have a text file that i want to use to store whether the checkbox was checked from a previous session.[code]Now say 002's seventh character = 1 i want to to be able to change CheckBox2.checked to true without having to put in a long if..elseif... statement - so i need to somehow get the checkbox name to change dependant on the the first three characters.[code]
View 14 RepliesI have just started to work with Webservices and the vendor have provided me with a wsdl reference file.I have added the file to my project.The examples the vendor provide is written in C# (which I wish I was programming in) but I'm a old school VB programmer so I'm trying to map it over. In the examples they seem to initate a new array in an existing object but I can't figure out how to do this in VB?The example shows the following (C#)
Security_Authenticate sec_auth = new Security_Authenticate();
sec_auth.dutyCode = new Security_AuthenticateDutyCode();
sec_auth.dutyCode.dutyCodeDetails = new Security_AuthenticateDutyCodeDutyCodeDetails();
[code]....
Using this example:-
Dim StoreItem As New Dictionary(Of String , Integer )
StoreItem.Add("CS2a", 6)
StoreItem.Add("DD72b12", 3)
[code]....
The second MsgBox will throw a hissy fit. How do I code so I can tell if an entry exists or not beforehand?
I'm currently designing a mock-up of a customer booking system for a cinema using Framework 4.0. All data at present will be stored in an array and as it's a mock-up, it will remain their (customer name, ticket price etc...) as no requirement to permanently store the data at this time.[code]...
View 1 Repliesmy issue could be found simple but I'm founding it difficults in regard of dealing with array concept in oracle and vb.netI will start by showing to you a code done in oracle side1-this script should be executed in hr schema2-create a table and call it job_testas
create table job_test as
select * from jobs
where 1=2
[code].....
how to write the code for my project.I am to base my new project on an existing one(existing one has code that works 100%)and create an Array of a structure that bascially holds the information from a summary form AND the totals from an AddToOrder_Click event. If you are still with me)... I cant figure out what the code is for my structure and Array so that I STILL have a Summary Form but I have an array that shows when I click my PrintPreview. So an Array is basically a "space" that holds information, like my summary form except it doesnt show until I click PrintPreview right?
If I just wanted to show the table then my code belongs in the PrintDocument1_PrintPage to show the array but the actual structure code belongs in the Click_Event of my AddToOrder? Please Please understand I AM NOT asking for anyone to write my code, basically I am asking for some clarification on what exactly creating an array from a structure is and therefore determing where the structure is to be placed in my code..
I have an array of type Double() (1 x n) that I am trying to quickly plot on a graph I've already set up. The only thing I want/need to do is take my array and store it as data points (y-axis values) in the series I already have. What's the best way to do this? Also, will the data points that are plotted change as my array changes, and if not, how would I replot those new points and get rid of the old points?
View 1 RepliesI am writing an app to be a single button failover of a set of mirrored SQL servers. The app has to handle several other functions (enable/disable and start/stop of services, writing to local registry, copying files from server A to server B, initiating stored procedures, etc.)I have a collection of labels that indicate the status of 4 services on 2 servers, I wrote a function to check the services when passed the machine name, and the service name. Originally I just called the function 8 times (4 services, 2 machines) and populated the labels 'manually'. I have all of this within a timer so that the service status is refreshed every couple seconds. Id like to clean up the code to a single for/next loop that operates on 2 arrays (an array of service names, and an array of labels) such as:
'**Fetch_Status is the function that gets service status, it accepts 2 strings, machine name
'**and service name and returns status "running", "Stopped", as my_status
Dim Services() As String = {"Service1", "Service2", "Service3", etc.}
[code]....
The only reason I want the control array is to be able to use the .Text and .BackColor properties of the labels in the loop. If I make an array of strings with the label names it doesnt seem to pick that up.
what's the difference between variable array and object array?
View 7 RepliesI 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].....
I need to make a program in vb that takes a 1 page existing pdf that i specify and inserts that into another existing pdf that i specify.
View 4 Repliesif i generate a label dynamically i can change the text as followed, variable is a string: Form.Controls(variable).text = "test" I now have a sub that will create some and will get some information out of arrays. I have a lot of them. I only want the function for tat specific array. I do not want a case or if. Thats why i was wondering if i can use a variable in the array variable. [Code] But instead of TestArray being hard-coded i want it to be replaced with Shelf. So whatever gets send into the sub will change the array that i'm using. Is that possible some how or is the way totally wrong?
View 1 RepliesI'm writing reports in Report Designer (VS 2008), and I've reached a point where I have to circumvent the restrictions on using aggregates in groups. I believe this can be done by utilising custom code, which is written in Visual Basic as far as I know (not sure what version though).
I have a dynamic number of "Pools", which each contain "Models". Each Model row needs to set the Pool Multiplier to the maximum of the current multiplier and proposed multiplier. The Pool row (parent group row) then needs to get the Pool Multiplier.[code]...
Is it possible to set the name of a variable to the value of an array? so I have the array[code]...
View 3 RepliesI have an array of 10 x 10 as shown below. In addition to -1, it consists of numbers from 1 to 9.[code]...
View 6 Replieshow to add a counter variable to this array? My code always stops when it gets to an empty array. I can't figure out how to make a counter variable to make it stop.
Private Sub btnTwo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnTwo.Click
For Each i In PlayerArray
[Code].....
simply i am trying to add some value in array variable for datafiled.
dddd
Dim dkeyn(docc.GetElementsByTagName("pkey").Count) As String ' it have 4
Dim ir As Integer = 0
[Code]....
I have a variable (double) which has a constantly (infinitely) changing value. I would like to store all the values of this ONE variable into an array. My variable and array are:
Dim x as Double
Private y as Double() = New Double (499) {}
I tried doing this:
[code].....
i want to declare an array with a name that is the value of a variable. I need to do this because i want to create arrays from a text file that i'm reading.Basically, if someone could make this work then i should be able to change it to fit my use.
Dim var1 As String = howdy
Dim var1() as Integer
In this case i'd like to be declaring an array with the name 'howdy' that stores integers. In reality i'm looping a bunch of read names and would like to create an array for each name i read- but i'm quite capable of sorting the rest.
ok, I got a lot of conceptual code for major chunks of the game's engine...like an inventory array of variables... he says that we will be using a lot of variable arrays, and I am trying to get a variable array dimmed in an inventory module, but when I try to declare what each index of the array should be, it says "declaration expected" and simply trying to reference the array from within another form, it does not register as existing...
the code is as follows, for he has not a clue how to program in vb.net
dim character_inventory(19) as array
and when trying to tell vb.net to set an individual index to nothing, it throws a "declaration expected" error...
character_inventory(0) = nothing is when it throws that error...
Is it possible to use a string as an array? I mean: I have several arrays
Dim a10() As Integer = {530}
Dim a15() As Integer = {370, 231}
Dim a20() As Integer = {305, 176, 126}
'I declare a variable as a string and I assign the name of an array to it
Dim tablaalfa As String = "a10"
'I retrieve data from the array using the name of the variable instead:
lbl1.Text = tablaalfa(2)
I have a variable that holds 350 lines from a HTML page. I need to read this variable into Array. reason behind this, because I am parsing a name that exist more then once.
any ideas on how to read variable with many text lines into an Array
I need code for separation of one word from array in bracket. For example: Word1 (Word2). What I want, is to separate Word1 on the one side and Word2 on the other side.
View 4 RepliesIn C#, I can declare an array variable like this: object[] Parameters;
And initialize it like this: Parameters = new object[20];
In VB, declaring and initializing an array is easy:
Dim Parameters(19) As Object
Dim Parameters As Object(19) ' Alternative Syntax
How would I initialize an array variable that has already been declared in VB.NET? Parameters = New Object(19) doesn't work.
For example, how would I translate the following to vb.net?
int value = 20;
object[] Parameters;
if (value > 10)
{
Parameters = new Object[20];
}