Evaluating A String As A Line Of Vb Code?
Nov 18, 2010I am trying to figure out a way to set a string equal to vb code and then run that string as a line a of vb code.
for example
set string x = "TextBox1.Text =
"test1".ToString"
[code]....
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Evaluating A String Expression?
Feb 17, 2010Does 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.
Evaluating A String Expression At Runtime?
Aug 27, 2009I 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.
Evaluating Dynamic String Formulas In .NET?
Dec 5, 2010I'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"
[code]....
Evaluating Mathematical Expression In A String?
Jul 7, 2011Is there a method that allows me to evaluate a mathematical expression in a string? Example (Not actual Code):
Input = "2+2"
Output = SomeMethod(Input)
Output = 4
Update: Nevermind, I found a way around it by using DataTable.Compute.
Get Line From Code To A String?
Jan 16, 2010we have Form1 and in this form we have several Subs like this:
Public Sub Sub1
Dim a,b,c as integer
a=1
b=1
[code]....
I want to put into str1 and str2 as strings the lines below specifying only the line number of the form where these particular instructions are found
Example:
str1="if a+b=c then msgbox("Correct")"
str2="if a2+c2=b2 then msgbox("Incorrect")"
Any function to do this?
Replace Multiple Characters In String In One Line Of Code?
Aug 26, 2009Using VB.Net I'd like to be able to replace a range of characters in a string in a single line of code.
i.e. something like
Dim charsToReplace as string = "acegi"
Dim stringToBeReplaced as string = "abcdefghijklmnop"
charsToReplace.ToArray().ForEach(Function (c) stringTobeReplaced =
[Code]....
Repeat Cards Showing Up In Game And Win Evaluating Code For Poker Game?
Jul 2, 2009I 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)
[code]....
Checking The Code Line By Line And Found That The Code Does Not Enter The IF Block?
Jan 15, 2012I am using the given code to copy my database files...it works like a charm in debug mode but as soon as I create a setup, it stops working. The error is
"Database Detach Failed"
I tried checking the code line by line and found that the code does not enter the IF block.I have no idea why.
Public Sub bk()
Try
Dim strDatabasePath As String = My.Computer.FileSystem.CombinePath(My.Application.Info.DirectoryPath, "LIC.mdf")[code].....
VS 2008 CodeDom - Create A Procedure Which Will Evaluate A String Expression As If It Were A Line Of Code
Oct 12, 2009I am trying to create a procedure which will evaluate a string expression as if it were a line of code...Kind of like what a graphing calculator does when you enter a formula. Does anyone have any experience with this in VB? I have an example of C++ code which uses CodeDom, but I am a bit rusty with my C++!
View 4 RepliesFind Line Number Containing A String And Replace Whole Line With Another String?
Dec 25, 2010If i have a line in a txt document "text.txt".Now what i want to do is open the file and read the contents.
When it find this "search.selectedEngine" term then it should delete that particular line and replace it with another string ("REPLACED STRING").
Show The Line Number Of The Line Of Code That Caused An Exception Within A Try...Catch Block?
Jan 29, 2009Is there a way to show the line number of the line of code that caused an exception within a Try...Catch block?
View 5 RepliesVS 2008 WebBrowser1.Documenttext Source Code (view Line By Line)
May 29, 2010I am using WebBrowser1.DocumentText to get a websites source code, and then parse a string. I am trying to view the source line by line, and doing it as follows:
[Code]...
However what is displayed is each character from the source code, rather than the line. I am making the client log into a website, and the needed value from the source code is then parsed, so I need to use the WebBrowser type to get the source code.
Code For Downloading A File From Internet With A URL Line By Line With Streamreader?
Jan 20, 2010show me a simple code for downloading a file from internet with a URL,Line by Line with streamreader?
View 6 RepliesReading A .txt File Line By Line Converting It Into A String Then Putting It Into A Listbox
Apr 1, 2011I'm having trouble with reading a .txt file line by line, converting it into a string, then putting it into a listbox. When I execute I get an error saying "IndexOutOfRangeException was unhandled" Here is my
[Code]...
VS 2010 Multi Line String - 1 Line = New Entry To Combobox?
Oct 16, 2010Ok, So I have a string that has its formats like this:
Line 1
Line 2
Line 3
[code].....
Read File Line By Line And Search String?
Aug 30, 2010I like search a file TXT with this contains:
Name "Paul"
Age "11"
City "Chicago"
my question is: Its possible get a string "Name" and give me the value "Paul"? I have this function for get strings:
[code]...
Read Xls File Line By Line Without Using Connection String?
Dec 26, 2009I need to read a xls/xlsx/ods/txt file line by line,to get a column name of file .how to read a file line by line in vb.net?
View 1 RepliesCode For Comparing Files Line By Line
Feb 2, 2009If anybody is having code for comparing files line by line using vb.net.
View 2 RepliesRead Multiline String Line By Line?
Jun 1, 2009I have a string that contains many lines.It is someething like:
I
want
to
be
a
millionaire.
I need to read this string line by line, that is to assign line 1 of the string to a certain variable, line 2 to another, and so on.Do you know how that can be done?
If / Then Not Evaluating?
Dec 2, 2011So 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
View 1 RepliesVS 2005 Remove The Box (0x0A) Unix End Line Code; Then Replace It With CR+LF Normal ASCII Code?
Dec 13, 2009I have this string just down loaded of a Unix server. I would like to remove the box (0x0A) Unix end line code; then replace it with CR+LF normal ASCII code. Also, I would like to do the replace before I save the data, while it in memory.
View 14 RepliesCompare String Line By Line?
Jun 16, 2011Input file
Type Reference
WIN 00001
WIN 00001
WIN 00001
MAC 00001
MAC 00001
Basically I need to compare if the first 3 character that are not equal
preferred output will be
Type Reference
WIN 00001
WIN 00001
WIN 00001
[Code].....
Read String Line By Line?
Jul 11, 2009I have googled this but all it comes up with is some C# and how to read a file line by line which is not what I want, what do you have to use to do this I tried this loop:
for each line in str
msgbox (line)
next
but it does not work, how do I get this to work?
Reading String Line By Line?
May 8, 2010For example I have a strint containing text with more than 1 line. For example:
"Hello How Are You"
I want to read a specific line of the string, if I choose to read line 1 of the string in a messagebox then the word "How" will probably pop up.
Evaluating A DGV Row And Change Row Bavkground Color
Aug 26, 2011My 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
[Code]....
Evaluating An Algebraic Equation And Getting The Answer?
Jun 19, 2009I store a formula in the database such as the following:GrossIncome+(Overtime/0.5)-Deductions=BasicNetIncome
I am able to substitute the string representations with actually values entered, thus:1000+(150*0.5)-100=BasicNetIncome
Then I remove the '=BasicNetIncome', thus:
1000+(150*0.5)-100
How can evaluate the above equation to return a result:
[Code]...
Evaluating Modal Dialog Result?
Apr 4, 2011Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
With Me.PrintForm1
[Code]....
NVelocity Macro Parameter Not Evaluating
Jun 14, 2011I'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:
#macro( getOutput $one $two $three )
<td>$one</td>
<td>$two.Item2</td>
<td>$three</td>
#end
[Code] .....
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.
VS 2008 : Evaluating A Poker Hand?
Apr 8, 2009We 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.
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