I am working on a UDP Client/Server, and currently i have them sending back and forth strings, which i convert to bytes, and then open the bytes to read. I want to now send an Object instead of those strings, which includes multiple unsigned integers and strings.
View 39 Replies
Say I have a List(Of Tag) with Tag being an object. One member of Tag, Tag.Description, is a string, and I want to make a comma-separated concatenation of the Description members.Is there an easier way to do this than to read the Description members into a List(Of String) and then use the Join function?
View 2 RepliesI have a "if This > That then" statement, that doesn't seem to work, as it triggers regardless that "This" is smaller than "that". Does it matter that these variables are marked as strings vs integers?
View 8 RepliesI suspect there is something wrong in my application, specifically in a part where I have to compare a couple strings and a couple integers.
I do something like this:
If myString = myOtherString Then
do something
End If
And the same thing for integers.
However, for some reason, it is not returning true... also, I heard somewhere there were more proper ways to compare strings and integers.
I'm trying to split an inputted string (txtStart.text) into separate integers. The split function works fine for me, but I can't figure out how to store the each part of the array... This is my current code that I based on an example from MSDN library:
Private Sub btnGo_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnGo.Click
SplitStringIntoWords()
End Sub[code]......
if i have 2 textboxes and i want to do subtraction with textbox1 and textbox2.
The value inside textbox1 is "5 12 30 8 2"
The value inside textbox2 is "7 9 14 8 3"
May i know what can i do so that the result will be "-2 3 16 0 -1"???
I'm going to start a project so what I need to do is make something that is kinda like an email. I am working with the register part of it because just like an email you have to select who to send it to.
View 5 RepliesI suspect there is something wrong in my application, specifically in a part where I have to compare a couple strings and a couple integers.
[Code]...
However, for some reason, it is not returning true... also, I heard somewhere there were more proper ways to compare strings and integers.
I've set up two computers, with a null modem serial cable. When trying the connection in two Realterm windows it works ok to send strings.I'm trying to write a simple project that sends the timestring over the same port.One button sends the timestring. I've created one other sub "AppendLabel" that just updates a label.text so I can see what's happening.[code]
View 8 Repliesgive me a link to an Example on SendMessage/PostMessage? (I want to use SendMessage/PostMessage to send Strings)
View 6 RepliesI'm migrating from VB6 to VB.NET, in hence my questions below:
I have to write a function that returns array of strings.
How can I initiate it to empty array? I need it since I have to check if it's empty array after it returns from this function.
Is list of arrays better for this purpose? If I use a list - Is it empty when it firstly defined? How can I check it it's empty?
Originally i wanted to ask if it's faster to sort Integers than Strings.But i have answered this question myself and i'm suprised of the big difference.Why is sorting and BinarySearch Integers as much faster compared to Strings?
The (VB.Net) Test with 1.000.000 Int32/Strings:
Private Function CheckIntBinarySearch() As TimeSpan
Dim watch As New System.Diagnostics.Stopwatch()
Dim rnd As New Random(Date.Now.Millisecond)
Dim intCol1 As New List(Of Int32)
[code]....
Consider having large collections of "String-Integers"("1","2","3",...). Would it even be better to parse them to integers before sorting and searching them? What is the cost of parsing Strings to integers?
I am using an oleDb connection to connect to an excel spreadsheet (.xlsx) file and load the information into a datagridview. From there I hope to have it edited by a person and programmatically at runtime. However, I noticed that when I import a file that has integers in a column, it will not import any of the string values in that column. Also, It will not allow me to manually enter strings into that column at runtime - it results in an error stating: [Code]
View 16 RepliesHow would I create a list of elements in VB.NET, save it to a .dat file, and make Ruby re-create such list (as an array) with such elements (they will be strings, booleans and integers)?
View 2 RepliesFor Each item As Object In ListBox1.Items
If item.ToString.Contains("http://" Or "www." Or ".com" Or ".net" Or ".org" Or ".biz") Then
I want it to check if item contaisn any of those, then it does something.
I have a list of strings. For each string in that list, I want to prepend another string. I wrote a method to do it, but I was wondering if there was something already in .NET I could use to do this. It seems like something that could be built in, but I was not able to find anything.
Here is the method I wrote:
Private Function PrependToAllInList(ByRef inputList As List(Of String), ByRef prependString As String) As List(Of String)
Dim returnList As List(Of String) = New List(Of String)
For Each inputString As String In inputList
returnList.Add(String.Format("{0}{1}", prependString, inputString))
[code].....
It works, but I would rather use built in functions whenever possible.
I'm working with byte arrays and building and disassembling Int16/UInt16 and Int32/UInt32 from them. I'd like to not worry about the Sign bit until I return the final value and just have the code return the appropriate value for the data type that was requested to be converted to/from the byte array
View 3 RepliesIn VB .Net this code:
Dim t As UInt64
t = UInt64.MaxValue
t += 2UL
causes an overflow. It is my understanding that in C it "wraps". Assuming that is true, is there a way to mimic this in VB? I need this for an implementation of UInt128 I am trying to write.
I noticed when I send bitmap over a stream I have to close the stream where I sent it from in order to get it on the other end. Is there any way I can keep the stream open and send images and strings, or any other way of doing that? [code] 'I have to close the stream or it wont work, but I need to keep it open to send more images!
View 6 RepliesI have quite a bit of VB6 experience but now am trying to create my first VB.Net project. The project is very simple - it just needs to send 8-10 character strings from the PC serial port. The problem I'm seeing is that VB.Net is always sending out a 0x0A character after each 'WriteLine' call. Using VB6 it was necessary to manually send out any End Of Line characters. My application requires that no extra EOL characters be sent after the string.
View 2 Replieshow to convert an array of strings to an array of integers? I want to convert a string array with 77, all string numbers, to an integer array?
View 1 RepliesI have been looking for examples to find the string between two strings. This top one works fine;
Public Sub ReadData(ByRef keywordStart As String, ByRef keywordEnd As String, ByVal filename As String)
Using reader = New StreamReader(filename)
[Code].....
Now the first one is fine - Ext_Volume is result of the string between the strings <Volume> and </Volume>. <Volume> and </Volume> are unique so this is straight forward.
However the second one - "^FDExp:" is unique, but "^FS" is not unique. There are occurances of "^FS" before and after "^FDExp:".
How do I get the string to search AFTER the occurrence, not before etc?
Dim str As String
Dim str2 As Array
str = "blabla duhduh"
str2 = str.Split(" ")
Say the string is something like
bla bla bla bla (cat) bladfdskdfd dsgdsdksf (dog)
dfdshfdskdskfsdfkhsdf sdkfhdsfkdf (kathy) fdsfhdskfhdsfkd (doggy)
I want a generic.list (of string) containing
cat
dog
kathy
doggy
How to do that with regular expression in vb.net
Later I want to do something more complicated like getting all strings between "url":" and ", from this strings
[Code].....
Is there an easy way to find a certain string within a string and then return the strings that you find as an array?I have written this:
Public Function FindStrings(ByVal strSourceString As String, ByVal strStartString As String, ByVal strEndString As String) As String()
Dim StringStartposition As Integer
Dim StringEndPosition As Integer
Dim Currentposition As Integer = 1
[Code]...
I have this string called time. It's value is in this format: HH:MM:SS The numbers change, but the format stays the same. I want to separtate the code into 3 strings Hour, Minutes, Seconds.
View 2 RepliesI have a DataGridView that has some columns with dates. It binds to an in-memory Datatable which gets loaded from an string array of data passed back from the backend Some of the rows returned have nulls for the date columns. Solution 1: If I define the Date column in the DataTable as "string" I can easily convert those nulls to empty strings and display it in the grid as empty strings (desired results). However, if the user clicks on the date column header to sort by date, it doesn't order the rows as you want. You get a purely string sort order. Not acceptable
[Code]...
I am looking for a control to load text strings into. I want to be able to use different font sizes and perhaps font styles for each text string. I also want to be able to select each text string. I am using a rich text box to obtain the formatting I need but I don't know how to set this up so that I can select each test string independantly. Alternatively I coulg put them into a DataGridView and get rid of the lines but this would look to structured as the cell width is contant for each cell in the DataGridView.
View 3 Repliesi have an xml file that i drag drop onto a picture box and i would like to use the information in the xml file to draw a table. the values for the column widths, heights and what goes in which box are in the xml file.the table is split into three sections the title part, a header and then a body.the first challange is finding asking how i can expand what i have to withdraw all the info for the same "sections" of the table as these are contained within different parent nodes.what i have is
Dim reader As Xml.XmlReader
reader = XmlReader.Create(dragFil(0))
reader.ReadToFollowing("tgroup")[code]....
is it possible to add multiple strings per item in a Ilist?If so can someone point me in the right direction? I've looked on the msdn and can only find examples on how to add one string per item
View 16 Replies
