.net - Using Two Equals Signs In VB 2008
Feb 6, 2012In code, why wouldn't this work? intMax = intTopValue = 20
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Using Two Equals Signs In VB 2008?
Feb 13, 2011In code, why wouldn't this work?
intMax = intTopValue = 20
.net - IEnumerable.Equals Seems To Call The Wrong Equals Method
May 23, 2012I implemented a PagedModel class to wrap around IEnumerable to provide paging data for grids in my MVC app.I used Resharper's auto-generated Equality code telling it to check the data, total rows, page number, and page size fields.[code]I found the call to Equals(other._ModelData, _ModelData) peculiar, as AFAIK, this checks that it is the same object rather than that the contained items are the same. Because my tests were failing anyways, I went ahead and changed it to other._ModelData.Equals(_ModelData) with no success. Then I reflected into it at debug time and found that other._ ModelData.GetType().GetMethod("Equals",{GetType(Object)}).DeclaringType was Object! Obviously, that would result in the failed comparison.I came up with a solution to create a EnumerableEquals method which compares every item in the two enumerables to confirm the are the same, but it seems sloppy. Is there anything I can do to use the normal .Equals method? [code]
View 2 RepliesVS 2008 Fill DataAdapter Parameter With 'CONTAINS' Instead Of 'EQUALS'
Nov 9, 2010[code]Where I add my parameter, I am trying to have it pull records that contain the text that is in the jpDescTextBox instead of being exactly equal to it. I have tried using wildcards such as * and %.
View 7 RepliesKeep A Log Of Who Signs In?
May 22, 2009I want to create a log that shows when users sign into this program, so I can see who makes changes to it. What is the best method of doing that?
View 5 RepliesSign Out User If Someone Else Signs In With The Same Account
Sep 28, 2009Sign out user if someone else signs in with the same account Anyone have code in VB that will do this?
View 3 RepliesSQL - Pound Signs Disappearing From Strings
Jul 22, 2010I'm usually a LAMP developer, but some .NET work has arrived. If I run the following code:
<% poundsign = "£" %>
<% Response.Write poundsign %>
<% Response.Write "£" %>
Nothing is displayed. However, outside of the <% %> tags (i.e., in the HTML) £ displays correctly. I have no trouble displaying the usual alphanumerics, it's just the £ sign that is proving problematic. The underlying file is in Windows 1252 encoding, and I need to serve it as such. If I save the file as UTF-8, I get mojibake instead of a £. What I can do to make this work, or any settings that might be preventing it from working (other than saving the file in a different format)?
Aside from the fact that my £s aren't appearing on the page, a major part of my problem is that I need to insert strings containing £ into a SQL server database, but if I form a SQL INSERT statement within the ASP, none of the £ signs end up appearing in the database. Inserting £ signs into the database from ASP isn't a problem when I save the .asp files as UTF-8 files, but I need everything to work in Windows 1252 encoding.
Storing Equal Signs (=) In XML Documents?
Sep 10, 2010I'm facing a problem that Google couldn't solve yet!I'm trying to store URLs in an XML file. Problem is that these URLs contain Equal Signs (=) in them. And that generates an error.Here is my code: (**token is a variable that contains the URL)
Dim child As String = vbCrLf & "<Link URL='" & token & "'></Link>"
Dim fragment As XmlDocumentFragment = doc.CreateDocumentFragment
fragment.InnerXml = child
[code]....
Why Does Regex Ignore Plus Or Minus Signs
Jun 21, 2012No matter what I try, it never matches the sign. I even tried using the string as the pattern. This function should be able to take a string like 1 day -36mins + 2s -1s and parse it into a TimeSpan object. Any pointers?
[Code]...
Display Multilines And Dollar Signs In Labels?
Sep 22, 2011I'm just starting to learn VB and I can't seem to get the label to display 4 separate lines that I wanted it to. It always seems to display Grand Total: (number)[code]...
View 7 RepliesDisplay Three Rows Of Percent Signs In The MsgLabel?
Nov 7, 2011We were given this and for some reason I can't get this to work right. Here is the whole thing:The following code should display three rows of percent signs in the msgLabel. The first row should contain one percent sign, the second row should contain two percent signs, and the third row should contain three percent signs. However, the code is not working correctly.
[code]...
Display The Number With Two Decimal Places And Dollar Signs?
May 7, 2009I need to write a program that uses constants to establish the base pay, the quota, and the commission rate. The Pay menu item calculates and displays the commission and the total pay for that person. However, if there is no commission, do not display the commission amount (do not display a zero-commission amount).Write a function procedure to calculate the commission. The function must compare sales to the quota. when the sales are equal to or greater than the quota, calculate the commission by multiplying sales by the commission rate. Format the dollar amounts to two decimal places; do not display a dollar sign.The summary menu item displays a message box that holds total sales,total commission,and total pay for all salesperson. Display the number with two decimal places and dollar signs. the Clear menu item clears the name, sales, and pay for the current employee and then resets the focus.The Color and Font menu items should change the color and font of the information displayed in the total pay text box.Use a message box to display the program name and your name as programmer for the about option on the Help menu.
[code]...
So the issue is when I push the pay/calculate button everything is calculating correctly the first time, but then when I push clear to input another workers name and weekly sales and push calculate, my label is blank and does not display any info about the second worker. Then when I push summary after inputting the second worker, it's only displaying the total calculations of the first worker. I can't seem to figure out this problem on my own (After countless hours staring at my code I might add!), so I am hoping somebody can pinpoint what I have done wrong? EVerything else is seeming to work just fine.[code]...
Redirect Console Output To Look For Signs Of Command Failure?
May 27, 2011I am running a command on all computers from a list. I am trying to get back a text file that says PASS or FAIL for each computer. I am using the below StreamWriter and function process. The process runs correctly and it rights to both a data file and an error log. The error log however always says PASS for everything. do I know what to set the if consoleOutput = "????" to?
Using swrr As New StreamWriter(ErrorLog, True)
For Each strUserName As String In strLines
Dim ConsoleOutput As String = GetCMDOutput(strUserName, saveFileDialog3.FileName & ".txt",
[code].....
VS 2010 - How To Use Mathematical Signs As Label Text Randomly
Oct 29, 2011How to use the signs "+", "-", "*", "/" as label text randomly. I am trying to create a math game for my kids. There I need a random sign to display every time they get new question to solve. I am able to display values [random numbers] but could not able to use this signs randomly as a single label text.
View 8 RepliesSaving Information So Program Remembers Next Time User Signs In
Feb 25, 2010i want the user to login, and the first thing is, having the text document for that(if theres a safer way to do it, let me know) then it goes to the weekly sales page, but theres also the goals for the sales, which rarely change, but if they do i would like them to be able to change them, then next page is the list of the workers, and if they need to i would like them to be able to add workers. so my question is: is there anyway that maybe i could save both the goals, and the workers in the text document, and when they need to change it/add workers it will save it in the text document and the next time they sign in the changes will be permanent? also is there a way to delete the user once they have been created, other than going into the txt document and deleting it.
View 2 RepliesUsing String.Equals In .net?
Aug 26, 2011I am comapring 2 contract IDs, one is sent by the caller, the other is in a file and read into a variable. I use a string.Equals method to compare the contract IDs. The contract IDs compare successfully if the number in a contract ID is more than 1 away from the the other for example:
CTSRG0006 & CTSRG0005 = false
However
CTSRG0006 & CTSRG0007 = true
the code I am using for the comparison:
If fileContractID.Equals(calledContractID) Then
isFileValid = True
End If
VS 2005 - Only 1 Or 0 - ABS And EQUALS
Mar 29, 2010I'm making a sort of VB.NET calculator that has all of the advanced features. I would also like it to have programming-style tips so that I won't have to build in things like ABS and EQUALS.
For example, ABS is sqrt(x ^ 2) and EQUALS is NOT(OZ(x-y)). NOT is 1 - OZ(x).
(x and y are the variables.)
I've come up with a few, but many rely on OZ(). OZ stands for 1/0. I need a formula that will return 1 if the value is <> 0, but 0 if it is equal to 0. I've worked on this for days but I can't come up with anything. Does anyone know how to do this?
What Is Different Between Equals And Referenceequals
Nov 8, 2009i read it on internet article already, and tested it already. but it didnt show any difference.
View 3 RepliesDifference Between Equals And = In LINQ?
Jun 10, 2010What is the difference between Equals and = in LINQ?
Dim list As List(Of Foo) = (From a As Foo In FooList _
Join b As Bar In BarList _
On a.Something = b.Something _
Select a).ToList()
versus Dim list As List(Of Foo) = (From a As Foo In FooList _Join b As Bar In BarList _On a.Something Equals b.Something _Select a).ToList()
Equals Operator For Interfaces?
Dec 8, 2009I have three classes which implement an Interface iComparesWith, and I wish there to be a single function such that each iComparesWith object of any of the three implementing classes should be able to compare itself with any other iComparesWith object, again, of any of the three implementing classes, and know if the two objects are equal. How can I code this so that the comparison code is only written once? Is it the case that I will have to create a top-level MustInherit class which implements the equality comparison, and have MustOverride methods for all of the methods of iComparesWith?
View 1 RepliesOverriding Equals For An Object With ID
Oct 11, 2011Is it the best override for Equals (in VB.NET) for an object having an unique ID? [code]I took that example from the MSDN, but not entirely sure if from all points of view (including performance) is the better solution.[code]
View 2 RepliesC# - Use IEqualityComparer<T>.Equals() In ToLookUp<T>() Extension?
Aug 5, 2011I stumbled upon an article regarding the Birthday Paradox and it's implications when overriding the GetHashCode method, I find myself in a bind.In tests, we found that in calls to the ToLookup() Extension, only GetHashcode is used, despite providing the implementation for Equals.
I think I understand why this happens, the internal working of ToLookup, HashSet, Dictionary, etc, use the HashCodes to store and/or index their elements?Is there a way to somehow provide the functionality so that the equality comparison is actual performed using the equals method? Or should I not be concerned with the collisions? I haven't done the maths myself, but according to the first article I linked, you would only need 77,163 elements in a list before reaching a 50% chance of collision.
If I understand this correctly, an Equals() override that compares property by property such as
Return (a.Property1 == b.Property1 && a.Property2 == b.Property2 && ...)
should have a zero chance of collision? So how can I get my ToLookup() to equality compare this way?
In case you need an example of what I mean:
[Code]...
I can get that to work with an override of GetHashcode(), no problems. But I don't want to use GetHashcode because if I have, for example, 109,125 elements in my list, apparently I'm already at 75% chance of collision? If it used aforementioned Equals() override, I think I'd be at 0%?
Custom Structures And The Old Equals Sign?
Apr 2, 2011Well I thought this was going to be easy, then the problem showed up.So I have a structure defined, as follows:
Structure Testing
Dim i as short
Dim j() as short
[code]....
And I need to do the same with all of the T2 array members.Now I get into writing the real code. Something like this:
For i = 1 to 100
Populate portions of T1 'not all values of T1 are used for each value of i
T2(i) = T1
Reset T1 to zero values and empty strings
Next i
So what is going wrong? After I set my T1 components back to zero, my T2(i).j has had all its 1-10 index values set to zero. Note that it is just the array, not the string s or the non-array i.Sure, I could write some code where I set T2(i).i = T1.i, and so on for each variable in the structure. But I have a feeling that is not the right way. There is some kind of equivalence going on between T2(i) and T1 in each loop. And I would would like to understand that more so I know how to really deal with it.
C# - Get The Number Of Rows Equals To A String In MS Reports?
Jan 13, 2012Simple question but it is killing.
How do I write an expression, that return the number of rows where a column is equal something.
I can get the total rows like this: =Count(Fields!Foo.Value) and RowNumber("Rapporter")
But I can't get the number of rows where Foo is equal to someString
Foo is a type string.
Override 'Equals' In A Structure With All Shared Members?
Dec 5, 2011I have a structure written in vb.net with all shared members. I need to override 'Equals', '==' and '!=' to avoid a warning.
View 4 RepliesString.equals() And Apostrophe - Execution Code ?
Oct 27, 2010I just ran into what I consider a very strange issue in the execution of some code that I thought I had completely well-understood.
Basically, I was using this kind of notation:
If strOne.equals(strTwo) Then
rather than
If strOne = strTwo Then
I came from a c and java background, and using the '=' operator for comparison has always made me cringe, so I've used the .equals() comparison function thinking that it was equivalent. But just now some of my code broke. It encountered a string containing "Eagle's Nest: Dawn Patrol", used the .equals() to compare it to "Eagle's Nest: Dawn Patrol" and declared them not equal. I changed the code to use '=' rather than '.equals()' and it declared them equal. I also did this:
If strOne.Replace("'", "").Equals(strTwo.Replace("'", "")) Then
And again, it declared them equal.
This has me a little rattled because my code is filled with the use of .equals(), and I've used it assuming that it was no different than writing strOne = strTwo. I've scanned the interweb looking for information about this. I have not found any information about odd interactions between the apostrophe (or other) character(s) and .equals(). Microsoft's documentation does not hint at any subtle differences. how .equals() differs from '='
Use A Loop To Sum Until Cumulative Total Equals A Specified Figure?
Apr 29, 2010I am trying to filter a dataset by adding together numbers within a specified field (say field1) within the dataset until i reach a specified number.
The filtered dataset should either be precisley equal to the number or most likley less than. In short if a row exceeds the number it should revert to the previous record.
I have no probs with general filtering and using data adapters to access the data. But im struggerling with the loop side of things.
Testing For Month Equals Zero With The Values Returned By An SQL Query?
Aug 3, 2011I've got the hang of using dates now, but I haven't learned how to test multiple results of a query. I can return a value from a query, but I'm unsure how to return many without putting them into a data grid view or an object on the form. (In Visual Basic)I have to check when a particular investment needs to be bought or sold, there will be more than one in almost every case. I've got the function to find out the interval between the months, checking if the asset is bought or sold in month x, but I'm unsure how to test it against multiple assets at once - nor do I know the best way to do so.
View 12 Replies.net - Why Have Equals Methods Have All Started Throwing Invalid Cast Exceptions
Mar 5, 2010Several of my overriden Equals methods have started throwing Invalid Cast Exceptions -
Unable to cast object of type 'System.DBNull' to type Common.ResolveUser'.
This occurs when binding List (of T) (where T is of type ResolveUser in this case) to a combo.
Equals Method:
Public Overrides Function Equals(ByVal obj As Object) As Boolean
Dim i As ResolveUser = CType(obj, ResolveUser)
If i.UniqueResolveID = UniqueResolveID Then Return True
[Code]......
VB Coding - Program That Calculates Minutes Worked Times Pay Rate Equals Amount Of Weekly Pay
Mar 16, 2011I am trying to build a program that calculates the minutes worked times pay rate equals amount of weekly pay this is what I got but it doesn't calculate
CODE: