currently I am using something like the following:[code]It seems to work fine, but I've seen posts on different blogs and stuff that say string.compare is better for some reason.Is this ok to use or should I be using string.compare()?
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Possible Duplicate: Fastest serializer and deserializer with lowest memory footprint in C#?
I'm using BinaryFormatter class to serialize an structure or a class. (after serialization, I'm going to encrypt the serialized file before saving. (And of course decrypt it before deserialization))But I heard that some other serialization classes are present in .Net Framework. Like XmlSerializer, JavaScriptSerializer, DataContractSerializer and protobuf-net.I want to know, which one is best for me?Less RAM space needed for serialize/deserialize is the most important thing for me. Also speed is important.
What is the difference (in bref) between (.NET)
myString == otherString
and
myString.CopareTo(otherString) == 0
If Object.Value IsNot "Something" Then Can you do this, or are there certain cases in which it wouldn't work? Wasn't sure if this should only be used for integers and booleans.
View 3 RepliesDim fName As String = " Z:\rdf1.txt" 'path to text file
Dim testTxt As New StreamReader(fName)
Dim allRead As String = testTxt.ReadToEnd() 'Reads the whole text file to the end
[code]....
after slicing and dicing, i got 2 vars with the following values in vb.net:
strTag = "<#<span class=SpellE>vermittler_person_Name</span>>"
tmp = "<#<span class=SpellE>vermittler_person_Name</span>>"
Comparing the vars gives a false:
strTag = tmp ' ==> false
Comparing the values directly right there gives a true:
"<#<span class=SpellE>vermittler_person_Name</span>>" = "<#<span class=SpellE>vermittler_person_Name</span>>" ' ==> true
Both are strings, i tried all kinds of stuff: string.compare, string.equals, also regex etc. etc. everything works perfect with all the other strings with simlilar structure, just not and only not with "vermittler_person_Name" in the middle...
it's a log in form and I need to put case-sensitive validation in other words if your Username = Admin then Admin != admin Consider this code block (VB is really unfamiliar for me so break it to me gently ^^) This is after it has matched a record in the database to the parameter passed to the function LogIn()
If dataTable.Rows.Count > 0 Then
'case-sensitive Validation follows
'data in Column ID and Password are placed in variables
[code]....
the asterisk-ed line returns an error (obviously) as strId is not of data type String.I also tried using LIKE but again since strId and strPass are not Strings, all I get is an error.
I have 4 string lists as follows
Dim input_list As New List(Of String) Dim input_POS As New List(Of String) Dim trigger_list As New List(Of String) Dim trigger_POS As New List(Of String)
I want to compare the contents of the input list (containing words (e.g., want, the) etc. to the ones of the trigger list (containign again words) and if a same entry (i.e. word) get the POS for both input word and trigger word from the relevant lists and put them into a property list. For example
input list (want, the, right)trigger list(want, there, wait)input list POS (verb, article, adjective)trigger list POS (verb, pronoun, verb)
Output property list (want:verb, want:verb) (only want is common between input and trigger list). Then I need to conduct a test between the two property items for similarites. If they are exactly the same, the code should output a confirmation "i.e., Yes" into a textbox. If not the code should output a "No" plus the contents of the property list into a textbox.
which is more efficient?(Assume case statements, etc., cannot be used.)
If a Then
If x Then
ax()
ElseIf y Then
[code]....
How do you find out what the screen resolution is and then make a comparison. ie if the resolution is 1024 x 768 do one thing else do another.
View 2 RepliesCode in VB.NET
[Code]...
works very well. So seems some consistency miss of the string constant behavior.
2) Have a look on the COMMENTS (in the attached picture). The words "custom", "string" and "error" are highlighted, however they are in the comments, so should be green, not blue.
Why this? What workaround? EDIT: Declared as "bug" in Microsoft Connect (even if is not more that a syntactic "miss")... EDIT 2: As remarked Hans Passant, standard string methods, like "cucu".Trim() does not work either.
I was wondrening if there is any built in functions to search for a sequence in a string
View 1 RepliesI am practicing for my next semester, trying to get ahead in VB.Net, so I got a library book and I am attempting the book exercises, in this exercise I need to replace the currency format to the To.String format, but everythiing I try doesnt work, and everything I read online just confuses me more, can anyone shed light on why my code is not outputting my discount amount and my total amount?
Dim subtotal As Decimal = Decimal.Parse(txtSubtotal.Text)
Dim discountPercent As Decimal = 0.25D
Dim discountAmount As Decimal = Math.Round(subtotal * discountPercent, 2)
Dim invoiceTotal As Decimal = Math.Round(subtotal - discountAmount, 2)
[code]....
I have one text box that the user enters an integer into. I use a select case to determine what the length of the number is. (along w/ string.length, etc)based on how long it is, I can determine if the number is 1-9, 10-99, 100-999, etc. What I want to do next is, evaluate the number and display a roman numeral that matches.
intMyNumber.substring(1,?) ' 1 would return the leftmost number
if intMyNumber.substring(1,?) = 1 then
if intMyNumber.substring(2,?) = 1 then 'etc
[code]....
This is the original code in c#
public class CategoryRepository: RepositoryBase<Category>, ICategoryRepository
{
public CategoryRepository(IDatabaseFactory databaseFactory)
: base(databaseFactory)
[Code]...
Does anyone has an idea what i should change to let it work and let my UserRepository use the methods in RepositoryBase while implementing the IUserRepository?
I am working with a vb program, but there is something strange on one of my .vb code pagewhen i put the "dot" afther the object name its dont show the methods availables for this objectbut on other vb code pages i can see it. but in this one no.for exmaplethis is a piece of code: Dim sb As New StringBuilder()
View 3 RepliesI am not sure how clear my question is by the title, but I am trying to make Class methods instead of Instance methods in Visual Basic that way I don't have to waste memory and code creating temporary objects to execute methods that don't need instance variables.
I am not sure if you can do that in VB but I know you can in Objective-C by using either a "+" or "-" sign in front of the method declaration. And in C++ (at least I think, I can't remember) you put the static keyword or const keyword in front of the function.How would I do this in VB if it is possible? Or should I just make a separate set of functions that are not members of a class?
I am working on a desktop application in VB.Net (4.0) There will a lot of SQL scripts which contains a lot of insert queries Currenlty we are running the scripts using SMO (http://msdn.microsoft.com/en-us/library/ms162557.aspx)For performance, we have planned to change the sql scripts to xml file ( instead of insert queries, it will have xml data with a proper xsd defined )Loads xml to dataSet and Using SQL Bulk Copy we are trying to insert to SQL Server.
[Code]...
im using my method as a search method in my program and it goes like this
For Each dr As DataRow In ds.Tables("Employee").Rows
If (dr("LastName") = "GO") Then
dr(MyColumn1) = "Testing1"
[code]....
is there another way to search for a row, i think in my code it would took time because it will pass through all the rows.
First time posting a question..I am trying to write to a table from a vb form and i am getting this message when executing the insertcommand:
Cannot call methods on char. The following is the code that i am using:
[Code]...
I've got several methods that all need to add items to a single list which will eventually be used to populate a listview. I thought about declaring the list at class level so that all of these methods could access it, but it didnt really make sense as the only methods that access this list are Shared methods, so I didnt think it was worth having a list just sat there for the entire time that any instances of the class are created, when in a lot of cases the list would not be used.
So what I ended up doing was just declaring the list in the Shared method that then calls these other methods that need to add to the list, and for each of these methods it calls it passes the list in as an argument. The methods can then add items to the list and as the list is a reference type it updates the underlying list object, so once all of the methods have been called then the list in the calling method is up to date and can be used. Then when that method exits, the list is no longer in scope and so is removed from memory. This all works fine, but it feels a bit... wrong. Would it be better to just declare the list at Class level and not be bothered about the small overhead of the list always being in scope when instances of this class are created that will not even use the list?
EDIT: Actually, thinking about it.. because the methods that use the list are shared then the list would need to be shared as well if it was at class level - so the list would not only be around when instances of the class are created, but all of the time. So it will just be sat in memory for the lifetime of the program wont it? I assume this could make a noticeable impact on memory usage after the list has been filled with data, so I guess if I went down that route then I would have to make sure I cleared the list once I had populated the listview. This is another reason why it just seems much easier and more manageable to declare the list as a local variable in the shared method that then calls the other methods that also add to the list.
Under component services, a COM+ component is used by the company, right-clicking it and choosing 'Activation' tab will show the 'constructor string' that is used for DB server connection by all applications. How can I access it the simplest way possible?
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I wrote some string extension methods in a VB assembly and am unit testing them from a C# project. However, C# acts like it cannot see the the extension methods, when other VB projects reference the VB assembly they have no problem. Both the VB assemebly and the C# test project are targeting .Net 3.5. Is there a way around this?
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Whenever we need to handle events, we do it by creating a method which handles the event. Without creating methods; is there some other ways of handling events?
View 6 RepliesWhat faster methods are available for VB to access the internet?I.e. methods which are faster than simply using VB Browser, as people make web bots which access multiple sites quickly which I would imagine meant there is a faster way.
View 4 RepliesI'm not sure I used the right lingo in the subject header. But, here's what I want to do. Let's say I have a class with some variables:
Class XYZ
Public InfoNo1 As Integer
Public InfoStr1 As String = " ".PadRight(200) 'Hahaha
Public InfoStr2 As String = " ".PadRight(100)
End Class
I've been looking around for examples of writing methods that act on variables defined within the class. What I want to do is make it so that doing something like this:
[Code]...
I don't need to know how to write the method, I think I can do that. I need to now how to make the method cause a ".Fixed" option to be added to the class string variables so that assigning a string using that method will cause the variable itself to be equal to the string plus the padding.
Is there a way to annotate functions, subs, properties, and methods so that tool tips will pop-up in the IDE as they're being defined or selected?
View 2 RepliesPublic Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load Dim someproc As Process
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result = SendMessage(buttonhandle, BM_GETSTATE, 0, 0)
buttonChecked = (result = BST_CHECKED)
Now I want to know whether the bit for BST_CHECKED is turned on or not.
How would I do that?
I can do
buttonChecked = (result % 2 = BST_CHECKED)
Is there a better way?
read this post carfully before you dive headlong into outlining what's wrong/right with the communities.
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