I would like to know if there is anyway to save arraylist to xml. Below are my code,
vb
Public Class Video
Public vName As String
Public vFile As String
Public vType As String
Public xTL As Integer
[Code] .....
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 am trying to count how many items are in an ArrayList and then save that into a Label variable that is updated each time an item's barcode is scanned.Information about the code below:rejectedList is the ArrayList that contains rejected parts.RejectedPartsNumberLabel is the label I am trying to update with the count from the ArrayList
Public Shared Function isFault(ByRef code As String) As Boolean
rejectedList.Add(code)
RejectedPartsNumberLabel.Text = rejectedList.Count
Return (code.Length = 7 And IsNumeric(Mid(code, 1, 1))) Or (code.Length = 4 And Mid(code, 1, 2) = "NC")
End Function
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 want to save some strings in a Session("myKey") as an ArrayList in my asp.net application.
So I have somthing like that:
Dim s As String = "String1"
If I use
Session("myKey") = s
it is working for the moment.
After PostBack I want to add another string to the session.
If do the same thing again, then i will overwrite my Sessiondata.
So I'm searching for something like this:
Dim s As String = "String1"
TryCast(Session("myKey"), ArrayList).Add(s)
In this case the Sessiondata would be stored correctly, but my code is not correct.
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
I am new to arraylist. I have used standard 2 dimension or single dimension arrays which is there is .net & legacy VB.What I want is removing & searching in arrays to be easy ? VB.net does provide something called arraylist whereby we can remove items easily like X.removeat (index) or x.remove (search) etc.[code]Now I have a array person. To add i do redim person(10) or using preserve if I need to dynamically add etc. To remove is a pain as I need to copy contents and remove manually.Anyways in .net you have option called ArrayList.How can I use this to make life easier? If I want an arraywhereby I can do person.removeat (2) or person.add person.name="XYZ" & so on.Just wanna ease up on searching & removing.
View 6 RepliesI know how to seralize my arraylist to xml using vb.net?
View 2 RepliesI'm trying to use my own structure as a dynamic array (ArrayList?) but can't find the right syntax.
Public Structure BLsCompsRootDir
Public BL As String
Public Component As String
[code].....
I want to create an arraylist from MDI childforms and I did it like this:
vb.net
Dim sl As New SortedList(Of Integer, Form)
Dim i As Integer
Dim form As Form
For Each form In Me.MdiChildren
[Code] .....
It's working great, that means that if I delete a childform for example number 2 from all 3 then it creats first number 2 again and then number 4. Now the problem is that It only shows the childformnumber in the parentformtext instead of the name and number of that childform,like this: parentform - childform 1
I can do this with a for loop, but I was just curious if an arraylist can be updated using a for each loop. ie
For Each arrItem As String In myArrayList
arrItem = "My Stuff"
Next
If I loop through the arraylist again the values remain unchanged.
I have a windows app and I'm trying to cache images in memory. I have:-
[code]...
I think I have to sort the array to be able to use binarysearch.So I need to sort the arraylist on TileDetails.TileURL(if possible) and then binarysearch on it.
I have a access db that contains logs in it from a project of mine. I have set up a total of 10 columns per row for log ids to be inserted ex: Log_1, Log_2, Log_3, etc...
The logs are pulled from an XML file that I downloaded and extracted from in an array list: log_id_1, log_id_2, log_id_3, etc...The db columns are a fixed number, 10. While the log id in the array list are variable, from either none upwards to about 20 of them.
If my arraylist has more entries in it than db has positions, I dont get an error, but if my array list has fewer than the 10 fixed columns in the db, I get an index error.What should I do to fix the error, capture the error and ignore it or is there another, better method?
may 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
how do I do the code if I wanna delete a selected item from the array list and not all the items store in the array list? [Code]
View 2 RepliesI need to know how to save listbox items into ArrayList And restoring these items back from Arraylist into Listbox I tried this code but it returns Null Error Exception
[Code]...
the vars outside the procedure
Dim rentalRecords As New ArrayList() ' The arraylist containing the records
Dim carRecords As New ArrayList()
Dim currentRecordIndex As Integer ' The index of the current record
[code]....
I want to have multiple threads input data into the same arraylist, so they would need to share it. If this is possible how can I do this task?
View 1 RepliesI 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 have a arraylist with plenty of lines. The array is populated from documents that have all kind of stuff in them, I got no control over what they contain. There's blank lines and double linebreaks so when I want everything in a textbox I clean it using this
[Code]...
My application reuses the same data returned from the database throughout the application. For example, a list of airport codes retrieved from the dataabase could be used on 5 different forms. In VB6 I placed the information into a Public Array. I'm looking for the best way to load and make available without hitting the database 5 times. After researching I found arraylist might be the way to go. My problem...I'm not sure I'm doing this correctly and not sure how to make the call to get the data out of the list.
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I have an arraylist of a "Doctor" class containing Firstname, Lastname,etc. Some elements in this arraylist may be duplicates of others. I am trying to iterate through the arraylist and search for duplicates. Once i find a duplicate i want BOTH duplicates put into another array and removed from the original array.
here is my function
Public Function createArrayOfDuplicatesAndRemove(ByVal st As ArrayList)
Dim duplicates As New ArrayList()
Dim i, j As Integer
[code]....
How could something be out of range if i start at the end and work to the front?
I 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?
I'm trying to read and load the content from the attached text file to a arraylist with the code bellow.
but what is happening is that not all the lines from the text file are loaded in to the arraylist, the reading jumps from one line to other in the text file.
Dim FILE_NAME As String = ((My.Application.Info.DirectoryPath).Substring(0, (My.Application.Info.DirectoryPath).LastIndexOf(""))) & " est.txt"
Dim lista_barras As New ArrayList
Dim lista_barras_esp As New ArrayList
[code]....
I have a list of names in a database and what i want is to get all of these names and display them in a label or a text box to the user on the website. I have tried to do this using a for loop but it is always overwriting the label each time. I have a list of 10 different names in the database and what it is doing is putting the first name in the label and then overwriting this with the second name and so on until it reaches the last name. I think i need to store each of the names from the database into an array or an arrayList and then make the label display all of the contents from the array or arrayList. The for loop i have used for this is:
Dim g As SQLadmin = New SQLadmin()
g.DB("SELECT nameOfPerson FROM Persons")
For i As Integer = 0 To g.array.GetLength(0) - 1
[code]....
i can select the names from the database and store them in an array then make the label display each of the names.
I have a module and form. Module has a structure.
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Actually values are not stored in that array list permanently. its storing temporarily and then destroying. i want to store that values in that arraylist permanently.
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.
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The exception I get is very vague and comes from the API. All i get is, "ARException Occured".
I'm trying to make it so the the images will save to the folder that you selected in the textbox1.text from the folderbrowser this is the code's I have tried
[Code]...