I am developing a VB.NET ASPX file which is currently working. But now it errors cause I added this one new input parameter which is a dropdownlist. The dropdownlist works properly now. Its source comes from a SQL DataReader. But hte problem is that the fields that the user should see are different from underlying values. So I want to create a 2 dimensional array list or somehow create a mapping as follows[code]...
View 1 Repliesmay i have an simple example to create,initialize an multidimensional arraylist some thing like
Dim i As ArrayList()()() and add / retrieve the values from specified indices
I am working with an ArrayList of ArrayLists. Every time I add a new ArrayList to the main AL, it replaces all previously added ALs with the new one.Here's an example
Dim al As New ArrayList
Dim al2 As New ArrayList
Dim list() As String = {"one", "two", "three"}
[code].....
I would expect the Final line should be "Final: one, two, three" but that is not the case. And if I pause and check my ArrayList (al), it shows 3 items, that all have "three" in every spot which is what the last AL I added looked like.
I'm trying to build up a multidimensional array which will hold two bits of info for each record in a database e.g. id, description.[code]...
View 2 RepliesI am trying to initialize a dropdownlist in VB.NET but my dropdownlist is not populating any values. I want the DataTextField to be different from DataValues in the dropdownlist. Dropdownlist should display series of strings; DataValues should only be numbers.[code]...
View 2 RepliesHow to initialize a multidimensional array by loop operation in VB .Net?
I have some arrays called 'Room', 'Subject', and 'Population'.[code]....
Is it possible to have an Arraylist of arrays in vb.net?
View 2 RepliesI have an array of String and I have to convert it to an ArrayList. Is it possible to do it in VB.Net?
View 1 RepliesI'm working in VB.NET
I have an ArrayList named Invoices populated with objects of the class Invoice.
I'd like to data bind this to a ListBox so that as the contents of the ArrayList are updated and changed the ListBox updates. I've implemented a .ToString function on the Invoice class, I just don't know how I'd go about binding the ArrayList to the ListBox.
What I am doing is iterating through all the groups that belong to the top group (Generic reports). Then I take advantage of the GroupPrincipal.GetMembers(True) which will recurse through a given group name. I test to see if the user exits under that group and if true I put the group name in an arraylist.
I use the for each principal in GroupPrincipal.GetMembers to loop through each returned user to see if they exist.
Is there a way to put all the returned users Principal.Name from a given group in GroupPrincipal.GetMembers into an ArrayList? This would allow me to to use Arraylist1.IndexOf to search for user. Which would be much faster then iterating through a returned list using the for each construct.
Sub RetAllMbrs(strUser As String)
Dim oPC As PrincipalContext = GetPrincipalContext() '<- this is function somewhere else in the code
[Code].....
I have a problem in Treading.I have a code like this;[code].....
I want to change ListBox1 with ArrayList. But I couldn't find how to use adding a string to ArrayList in tread.
I have an arraylist (arrFirstArry) which I use to populate another arraylist (arrNoDuplicates) preventing any duplicates from being added. This works fine. What I would also like my code to do is prevent adding any partial values which may exist from being added. i.e. my array is like this
[Code]...
I have two structures Public Structure myResearchData
Public batchName As String
Public arraylistRData As ArrayList
End Structure
Public Structure myResearchSubData
Public researchDescription As String
[Code]...
Cleared MyResearchData.arraylistRData for new data to be put in but it also clears the arraylist inside MyResearchDataAList and didn't old the contents of the arraylist
What I need to do is read an ArrayList in My.Settings and add another ArrayList to it. The first think I'm trying to do is load My.Settings.Records into myArrayList. I'm not quite sure on the proper way to do this. I've tried things such as Dim myArrayList As ArrayList = My.Settings.Records, I'm not sure if I need New and I'm not sure if I need .Clone or .CopyTo.
Then I have another ArrayList myArrayList2. To get this into myArrayList I've done: [Code] Then to save it back to My.Settings I've done. My.Settings.Records = myArrayList. The problem is I keep on getting Object reference not set to an instance of an object error on the AddRange line. My.Settings.Records is definitely an ArrayList and it will sometimes = Nothing. The objects will only ever be strings.
I want to write a program to write in an xml file in this format:
<?xml version="1.0" encoding="utf-8" ?>
- <Orders>
<Item id="1" SKU="998123" Description="Super Widget" Quantity="100" />
[Code]....
how i can write a program to create a shortcut in the startup folder of a different program. So i have one program on my computer that should run at startup, i just need another program to create a shortcut to it, and then copy this shortcut into the startup folder.
View 20 Repliesi have to write a program for my VB class that consists of a resistance checker program. I've searched like a madman to help me through this and I have found nothing >. The program consists of 2 combo boxes, the first one is the nominal resistance drop down list of the numbers :100, 150, 220, 330, 470, 680, 820 and 1000. The second list is of the tolerance numbers; +/- 0.4%, +/-0.6% and +/-0.8%. Now what i want to do is select a number from the first combo box and select the tolerance level of the second combo box and i input the resistor of said value into the text box. when i click the check resistor button it should display a message saying if the resistor is in or out of tolerance. For now I have the form all laid out and the values inputted into both combo boxes and i can go to run the program i am able to select said values. Now my problem is trying to get the right code so that i can check the resistors value.
View 2 RepliesI am currently making a GUI for Minecraft Coder Pack. MCP works off a system of batch files that launch python programs. I want to be able to read and write to these cmd windows throught vb.net. So that I can tell when a process has finished or to answer a yes, no question i nthe python program, with a gui from vb.net[code]\...
View 1 RepliesHow do I write a vb10 program that works in windows me. I am getting an err message saying MSCOREE.DLL expects a newer version of windows.
View 3 RepliesI want to create an array of an array (or arraylist of an arraylist) to hold strings.I want to fill an array1 with string values Then add this array to array2. - but only taking up 1 row in array2 e.g something like array2(index)=array1 Then clear array1 then loop through this again with different data, and add it to the array2.so will end up with something like
array2(0)... contains a collection of array1 data
array2(1)... contains a collection of different array1 data
.. and so on
i think i need to make new instances of array1 each loop, but not sure.I dont mind if it uses arrays, or arraylists, or lists, or structure of arrayslists?
s there a difference between the arraylist in visual basic and arraylist in C#? I had to convert some C# code to VB and there is a call I make in a third party api that requires me to pass in an arraylist. When I do this in C# it works just fine, but when I do this in VB, I just get back a vaque exception from the api.
[Code]...
The exception I get is very vague and comes from the API. All i get is, "ARException Occured".
How could I write to that, like add another game to it? Like rewrite that but from textboxes but create a whole new game after that game.[code]\...
View 4 RepliesUsing this example how would I go about updating an XML file using this example[code]...
View 5 RepliesMy friend's birthday is coming up in 4 days. I am currently out of the country(on the other side of the world),and I want to give her a program for her birthday.
View 5 RepliesSome time ago, I did some F# programming, the following code is used to serialize/deserialize float32 array:#light
However, nowadays, I have to do some programming in VB.NET to serialize/deserialize float32 array again. As F# programming is not suitable for GUI, but GUI is necessary for my current programming.I want to know how I can rewrite the above code in VB.NET.For example, I have a float32 array, (I dont know what data type in VB.NET is equivalent to float32 array in F#) of (1.0, 2.0, 3.0); I want to serialize it using DataContractSerializer, then read it back so I can still get the same float32 array.
i want to write a program in visual basic .net 2003 console application that will take one variable and then a menu to ask what the user wishes to do.the menu is a conversion of currency i have a code that worked but i whenever i press the other option on the menu the screen just closes
here is the code :
Dim x As Double
Dim y As Double
Dim z As Double
Dim m As Integer
[code]...
i need a program that give n dot and take a Function for example:
give (x1,y1) and (x2,y2) take me it Function(for F(x)= ax+b)
give (x1,y1) , (x2,y2) and (x3,y3)take me if Function(for F(x)= x ^ 2+bx+c)
I need to write a program in vb.net using Do while, for next and do loop. Th eprogram will sum all the even integers between 2 and 50. This is what I have so far
Dim intCount, intNumber as integer
intCount = 0
intNumber = 0
[code].....
I have to write a program that uses a class...and I've got no idea what it is or how to do that.My program is a simple interface that adds up the users selections and quantifies them into a membership fee.
Code:
Public Class Form1
Const FamMem As Integer = 90
Const SigMem As Integer = 50
[code]....