I have create a structure type array. sort the array so i can display the sorted array in a listbox. I want to be able to either sort by last name or the student with the highest score. Here's what I have so far:
Structure student
Dim firstName As String
Dim lastName As String
[Code]....
I heard about the IComparer thing but I didn't know how to implement it into my project.
I'm trying to sort an array based on a structure but whenever I do this, it basically erases all the data in the entire array.I have verified that the array is populated correctly, it is when using array.sort that everything returns blank.
View 6 RepliesI made an Array of Structure as given below. Now I want to sort them using different parameters.
"Array.Sort(ArratName)" or "Array.Reverse(ArrayName)" didn't work as I expected.
Structure
CheckRecord
Dim
CheckNumber As
Integer
[Code] .....
I epochly failed creating an array structure. How would I build it like I tried to do with values for each data type.
Structure PovertyGuidelines
Dim Id As Decimal
Dim NumberOfPersons As Decimal
Dim AnnualIncome As Decimal
End Structure
Private Data(20) As PovertyGuidelines
Private Id(,) As Decimal = {{1D, 2D, 3D}}
Private NumberOfPersons(,) As Decimal = {{6D, 9D, 7D}}
Private AnnualIncome(,) As Decimal = {{24000D, 32000D, 27000D}}
I found out that you cannot set the array size for a structure when you are making it, i.e
[Code]...
I have to fix this by making a variable with type made by Structure bullet and then redimming it, i.e
[Code]...
This means for every variable with the bullet type i create i have to redim. Is there a way i can set the size of .mesh with .capacity for every single variable created with the bullet type automatically?
I have to create an array of structure type in VB.net. but I am getting error while marshaling this error. I have to pass this array of structure type in to Dll function.
Code:
Structure declaration:
<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Ansi)> _
Public Structure dx_entry
<MarshalAs(UnmanagedType.ByValTStr, SizeConst:=10)> _
Public dx As String
[Code] .....
I am getting the following error:
An unhandled exception of type 'System.ArgumentException' occurred in Audit_Demo_2307.exe
Additional information: Type dx_entry[] can not be marshaled as an unmanaged structure; no meaningful size or offset can be computed.
I have a database table of company information.It's about 50 records and contains things like company id, company name, address, phone number, shipping rate1, shipping rate2,etc.I want to load that table into a structure that I can quickly search within my code.I want to search by id to find the company, and then use the company's data to update some records.My lazy way has always been to add a listbox for each piece of data, then do an indexof on the id, then access the same index on the other listboxes.[code]
View 6 RepliesI am using structures in my programming and I sort the structure according to a value in the structure using IComparer. How did Microsoft implement the Array.Sort() method? Is there any documentation (references) for this? Is it the same for all types of Sort() in Visual Basic?
This is a simple example for what I want.
Dim MyArray(6) As Integer
MyArray(0) = 1
MyArray(1) = 45
MyArray(2) = 45
[Code] .....
Array.Sort() will sort this array as: (1 1 1 10 45 45 57)
How does number 1 get sorted? Is it bringing to the end the first one or keeps the old one in the same index? In my original example (before sorting), MyArray(0) = 1 and after sorting MyArray(0) = 1. Is this the same original 1 or this another 1 (the newest one added to the array) moved to that position? In case the MyArray(0) = 1 after sorting should be MyArray(5) = 1 before sorting.
I am trying to communicate with an external device and i am trying to send a byte array to the external device via sockets but i am always getting a response the message size is too small so i am not sure what i have done wrong. Between the data type there should be no alignment present and all numbers are represented in little endian format. The char array is not null terminated as mentioned in the protocol specifications.
I have to send data based on a struct that embeds 2 other struct. So here's my vb.net code for the struct used to convert to byte array and the sending part.
Public Structure MESSAGETYPE_OIP_Login
Dim Header() As COMMANDHEADER
Dim UserName() As PSTRING
[Code]....
I'm using a Listview in VirtualMode, so I can 'add' a lot of files almost instantly. A Listview in VirtualMode does not allow sorting, so I need to sort the data myself. The data is stored as a List of Structure (it's faster to load than a List of ListViewItem). The code below works fine, but I need to sort based on multiple variables in the Structure. Code:
View 2 RepliesI want to make a structure within a structure. Basically it will appear like this:
Structure ID
dim CardType as string
im CardCode as string
[code]......
In Vb.net I am trying to assign an array of structure to another array of same structure[code]...
View 2 RepliesI am writing a scripting language which used .net for execution. Now I have written a function which accepts an object and return a set of numeric values. I wanted user to pass any numeric array (e.g. integer,single,double,long) and I could return values in that format. I mean user can retrieve value in any numeric array type rather than specifying an array type. E.g.
[Code]...
I'm having problems with marshaling in VB.NET to C++, here's the code :
In the C++ DLL :
struct APP_PARAM
{
[code].....
Here's the data I'm trying to work with
Spark Plugs
column 1: PR214,PR223,PR224,PR246,PR247,PR248,PR324,PR326,PR444
Brands:
column 2: MR43T,R43,R43N,R46N,R46TS,R46TX,S46,SR46E,47L
column 3: RBL8,RJ6,RN4,RN8,RBL17Y,RBL12-6,J11,XEJ8,H12
column 4L 14K22,14K24,14K30,14K32,14K33,14K35,14K38,14K40,14K44
Here is what i came up with for my code so far
Public Class frmMain
Private strSpark() As String = {"PR214","PR223","PR224","PR246","PR247","PR248","PR324", "PR326","PR444"}
Private strBrands As String(,) = { { } }
End Class
I have a simple type like:-
[Code]....
if I have a list of type top_params then how can i sort the list based values in the k_sig_level field?
I have two structrures
Public Structure PhoneScheduleEntries
Dim Count As UInteger
Dim PhoneSchedule() As PhoneScheduleEntry
End Structure
I have a list of instruments and I need to sort them to the following requirement.
order by:
cash
securities in alphabetical order
managed funds in alphabetical order
I have a list of instrument which has properties name and type, I've managed to sort alphabetically by name.
Instruments.Sort(Function(x, y) String.Compare(x.Name, y.Name))
Instruments.Sort((x, y) => string.Compare(x.Name, y.Name));
After gathering the Machine names on the (sealed) LAn i am then getting the ip addresses, MAc address and Macine User name of each machine on the LAn..These details will need to be accessed seperately for use in the security testing and i am unsure how best to store the active data (though eventually in a database) Am i best to create a Multidimensinal arrayList or array(bearing in mind that all the data is convereted to "String" (arrays can only store one data type??) The data found on the live network is allways changing making an array a difficult choice? I have read some tutorials mentioning making a structure with the data and storing this in an arraylist but i dont know whether this will make accessing the individual data items (ip,MAc,HostName etc) a difficult procedure?
View 1 RepliesIs the integer data type is structure? And if yes what is the original code of it?
View 2 RepliesI am trouble in sorting 2 dimensions array in vb.net. One row has 5 columns. Original array have 3000 rows.How can I get the effective sorting with pdtId. I tried to find googling, cannot get the right answer to me.
(0, 0) = pdtId "string"
(0, 1) = brand name
(0, 2) = category Id
(0, 3) = url
(0, 4) = date
[Code]...
I'm trying to bubble sort an array then display it in a list box. When I click the button the program crashes.
Here is my code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
If Not TextBox1.Text = "" Then
ListBox1.Items.Add(TextBox1.Text)
[code]....
And the compiler gives me this error: A first chance exception of type 'System.IndexOutOfRangeException' occurred in WindowsApplication1.exe
I have a 2 column database....looks a little something like this:
Column A Column B
972CL 86.20716105
972CL 58.71034089
972CL 64.15368376[code].....
In column A there are 5 different variables (i have shown 3)....My goal code a macro to sort these by column A, calculate the average of the corresponding values in column B and ultimately end up with 5 variables that are the names of column A. e.g
972CL = average of all the 9721CL variables
972V = average of all the 972V variables
A caveat is that i will not know the names of the variables...i'm not sure if this code below is the right way:
For Row2 = 1 To 100
If Worksheets("Sheet2").Cells(Row2, Col2).Value = Worksheets("Sheet2").Cells(Row2 + 1, Col2 + 1).Value Then
testno = Worksheets("Sheet2").Cells(Row2, Col2).Value[code].....
Is there at all a way to sort (numerically) a multidimensional array?
I have an array that is as follows `dim points(23,1) as String`
The first dimension of the array has the players names in, the second dimension of it has their cumulative points, so I want to sort the array by points and maintaing the correlation of players name to points
I am writing an auto insurance application.I need to sort a three dimensional array in descending order based on an integer value in third field in the array.The CalcPremium function returns an integer value.
Dim CarDriverArray(3, 3)
CarDriverArray(0, 0) = "D1"
CarDriverArray(0, 1) = "C1"
[code].....
I need to be able to sort in ascending and descending order the information in the (9,5) array, but sort it by the 0-5 dimension.
[Code]...
sorting list of files in a folder. Below is a snipet of code from a program. The logic is dependant on the files coming in in alphapetical order. I did post about this earlier but I got pulled away and did not get a chance to follow the thread all the way through. The code is complete and it works. However I know it is not guarenteed to pull in alphabetical order so as my final step I wanted to sort the list of files. I thoughr using the array.sort command might work but I am not sure how to use it.
sLine = SetupNames(0)
Dim di As
New IO.DirectoryInfo(sLine)
[code]....
Is there a way to sort an array in VB that would put J10 and J11 after J9?
J1 (PN= 605848)
J10 (PN= 605987)
J11 (PN= 605987)
[code].....
This is what I get after I run myArray.sort()
I want to sort a decimal array (currency with the places). I'm sure that I could find a bubble sort and modify it to suit my needs but it would seem that there would be a clean solution out there so I don't have to reinvient to wheel.
View 3 RepliesEach array string represents a text file in a folder. I want the array to be sorted based on what the text file contains. How would I do that?
View 1 Replies