So I am trying to evaluate 3 conditions in an if statement. Its not working how I would assume it should. I basically want to do this:vb.net If PGN = &HEF007E And PGNData(0) = &H58 And (PGNData(1) And &H40) = &H40 Then IgnOn = True Else IgnOn = False If I write it in that manner it gives inconsistent results. If I workaround by writing it this way it works perfectly:vb.net If PGN = &HEF007E And PGNData(0) = &H58 Then If (PGNData(1) And &H40) = &H40 Then IgnOn = True Else IgnOn = False
Does anybody know of a call in vb.net that will evaluate a string expression. For example, how would one evaluate the expression "(1+2)*(3+4)"?I've looked all over and it seems that people are writing their own parsers. There has to be a better way. After all these years, VB.Net must have something that will take an expression and evaluate it.
Dim strMyExpression as string = "(1+2)*(3+4)" msgbox( VBEvaluate(strMyExpression))
and the result would be 35.Also, when will microsoft start to use google as the search engine for these forums? Bing really sucks. Searching for "Evaluating a string expression in VB.net" gives the most bizarre links.
My DGV's last visible column in a boolean. I am needing to go through each row and determine if the value of dgv item bFlag is true then turn the row back ground red. Here is my start of it. It appears to be only making one loop then giving the message box.
Private Sub EvalGrid() BindDGV(dgvResults) Dim cnt As Integer = dgvResults.Rows.Count
I have a application that allows the user to enter a series of nested filtering commands. E.g "Name starts with x or ((Description contains y or Property1 is On) and Property2 > 100)"
I can preprocess this and distill it down to a string in the form of an expression of True and False's ie, To "True or ((False or True) and False)" Is there a simple way to have this final expression evaluated without having to write a complex evaluator myself?
I have seen a method of evaluating this by compiling a dummy function at runtime but as I need to process this against possibly thousands of records that solution is too slow.
BTW These are not all fields in a database so I cannot use Queries or SQL etc.
I'm working on a project where I need to evaluate some formulas in VB.NET. I've been using the MS Script Control to evaluate some of the simple logical/mathematical formulasHowever, I'm now faced with dealing with string expressions that set variables in my program to certain values. So, for example, let's say I've got the following:
Dim netPrice As Decimal Dim expressionFormula As String = "netPrice = 0"
I'm looking to create an inline function (method) inside my NVelocity template. The solution to this appears to be to use Velocimacros. So, I mocked up the following template to test:
When I run the template, the problem I'm having is that the output from the macro parameter $three is literally "$item.Item3" instead of evaluating to #3/3/2003#. (BTW - this happens with any of the 3 items in the tuple if they are passed with the .Item call, so it isn't about the data type). I can make a variable and pass it just fine ($one1). I can pass the tuple itself and call the .Item property inside the macro ($item.Item2), but for some reason I cannot call the .Item property when passing the argument to the macro.
We are working on a poker game as a class project. My part is to evaluate and then determine the value of a players hand. We are evaluating from highest to lowest (ie. determining whether the player has a straight flush, 4 of a kind, full house, flush and then going all the way down to a high card only "worthless hand"). My part is evaluating the 2 pair, 1 pair, and nothing hands. The hand will be a two-dimensional array with the row(0 thru 12),column (0) containing the numeric "face" value of the cards and the column(1) containing the value assigned to the suite (1=clubs, 2=diamonds,3=hearts,4=spades). I have NO IDEA where to even begin this evaluating procedure.
I am making a checkers program and I am in the phase of starting to evaluate jumps. This is what I currently have so far and allow me to fill you in a bit before you look at the code. Checker pieces are white/green. Each checker is created as a label at runtime and in the tag property a struct is held that possesses all of the information reguarding current and previous checker state.
The problem I am having is that as this sub runs each opposing checker is evaluated for jump capabilites which is all fine and dandy. It is even alright that currently if a jump is executed that the same side will continue to evaluate through the sub looking for additional jumps and if they are found they will be made because that is how it is currently coded. What I am trying to do is find a way to evaluate each piece that can jump. So if checker1 can only make one jump and checker2 can make a triple jump checker2 needs to be the guy making the jump and I honestly don't know how do start that. I am forseeing global vars being created to hold information or even a structure and taking the one that changes the most. If two checkers can only make 1 jump then I will rand the one that gets to jump (not looking to win any awards for AI here). Anyhow, any suggestions on how to start this, at least saving the information throughout the sub even if it is called recursively?
I'm working with visual studio 2008 developing software for windows CE 6.0, compact framework.I'm having this "strange?" trouble with isNumeric method. Is there another better way to do this job? Why is getting me an exception? (two in facts...both of type FormatException)
dim tmpStr as object = "Hello" if isNumeric(tmpStr) then // EXCEPTIONs on this line // It's a number else // it's a string end if
[URL]From what we can see on MSDN, it says to be careful about which expressions we put as they change from language to language. My question is: what are the supported languages for writing those expressions? If various languages can do it, how does it detect which language is being used?I've made my class in CLI, and coded the expression in c#, being that it works. I've tried in c++/CLI, but that way it doesn't.
I have an EnumerableRowCollection that looks like the following: VendorCode | GroupType | Variance 01165 G .16 01165 G .16 01165 CH .16 01165 CH .18 07754 G .25 07754 G .25 07754 G .39
Essentially, this is a massive list of vendor codes, their groups, and price variances. I need to compose a query that will create a distinct list vendor codes and group types. The catch, however, is that I need to evaluate all of the variances associated with that particular VendorCode/GroupType to see if they are all the same - it they are not, I need to return some way of signifying that the group has a "custom" variance, otherwise it needs to return the value (ie: if they are all .16, then return .16, if there are multiple values, return "custom")
The result would look like this, based off of the list I showed above. VendorCode | GroupType | Variance 01165 G .16 01165 CH custom 07754 G custom
I have no trouble getting a distinct list of VendorCode/GroupType - this is what I have so far: Dim distinctList = From q In query Select q.VendorCode, q.GroupType, (evaluated q.Variance here?) Distinct (where "query" is an EnumerableRowCollection(Of (anonymous type))) I'm at a loss, though, on how to evaluate the variance property to get the result that I need?
Just switched over from VS2005 to VS2010 and I am having issues debugging my software. When I stop at a breakpoint, I can't see what variables contain. When I try to look at variables with QuickWatch, it states that it is "Unable to evaluate expression."
I am working on a poker game and I have the game setup the way I want it in terms of graphics and I have the code programed to deal the cards out exactly how I want them. Granted, the code is very simplistic, but functional for a new programmer like myself. I'm sure there are other more efficient ways to code my game, but I like mine so far because I can at least understand the majority of it. With that being said, here are a few problems and questions that I have.
1. How come when all 12 cards are dealt out I have some cards repeating in the game? For example, I get queen of diamonds in more than one picture box when I only want the card to be dealt once and then removed until the next game.
2. I was hoping to have a button 3 to clear all the boxes, basically resetting the game to the next game. When I hit button 3 it only clears the contents of picturebox 10 and 12.Other notes: I have the deal down the way I want it. It deals the first 10 picture boxes and a second button deals the 11 and 12 picture boxes.
3. I know this is my next step so I want to post it with the code I currently have. I want to start taking my project one step further by evalutating each of the three rows of cards (3 rows of 3 cards each - I'm not worried about the dealers hand (picture box 10, 11, 12 yet). So I want to evaluate a row of pictureboxes against a "pay scale" and display the win in a text box or label next to the 3 card hand. For example, Q of diamonds, Q of Clubs, Q of spades would win 15, etc. ( have a weird feeling I may have to change the names of the cards (I have them named card1, card2, etc. right now) to something that identifies them in order to evaluate the hands.
Here is the code that I currently have. I'm using visual basic.
Public Class Form1 Dim Rndm As New Random Dim myPB(11) As PictureBox Dim HiddenCards As New List(Of String)
