what i need is i what to get all information within the parenthesis of Sin().for example , i have created one one textbox in my user interface.i wanted users to enter some trigonometric expresiions like " sin(90+(25+25))"for that i what all the information present with in the parenthesis of sin()
view sourceprint?
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Public Class Form1
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this is pradeep, i m vb.net learner,my English not good dont mind what i need is i what to get all information within the parenthesis of Sin().for example , i have created one one textbox in my user interface.i wanted users to enter some trigonometric expresiions like " sin(90+(25+25))"for that i what all the information present with in the parenthesis of sin()
View 5 RepliesThis program was written by AdamSpeight2008 and it checks for balanced braces does anyone know how to make it check the balance of other symbols for example: {} () <> [] [code]
View 11 RepliesI'm trying to make a string use parenthesis ( "(" and ")" ), but for each one it returns: null (for the parenthesis).How can I get this to work? These are examples of codes I've tried so far:[code]....
And then I tried reading from text files that had those characters. Each one only returned a space.How can I get this to work?
How can i get the string within a parenthesis with a custom function? e.x. the string "GREECE (+30)" should return "+30" only
View 5 RepliesI'm a normal user of to Visual Studio 2008 and very experienced with VS 2005. On 2008 when after I enter the parenthesis after the object method name I see an intellisense prompt with the parameter name defined on the method along with a := sign. What does := means and why does it show up? anyway it helps me a lot sometimes if I use same variable names on different service tiers. What does := means?
ObjectName.MethodName(VariableName:=
I have strings like:
1. Three (3) 10,000 gallons underground gasoline storage tanks.
2. Equip ID: (23-1)
I want to extract the '3' and the '23-1' and from the strings. I can rely on the first set being inside ( ) as the strings I need. The strings will be numeric characters plus the dash (anything between ( ) would be preferable.) What RegEx pattern would I use?
Here's what I have so far but it gets the first number and not the ones in ( ):
Function Extract_Stuff(ByVal LineText As String) As String
Dim myMatches As MatchCollection
Dim myRegex As New Regex("([0-9]+)")
myMatches = myRegex.Matches(LineText)
For Each successfulMatch As Match In myMatches
Return successfulMatch.Value ' should only be one match, return first
Next
Return ""
End Function
I have seen all over the internet to format a NEGATIVE double value with a parenthesis WITH a $ symbol ie. currency type.
I am looking for a .NET format string, to format
12345.67 = 12,345.67
-12345.67 = (12,345.67)
To search a pattern containing parenthesis, they must be escaped using backslashes. So to search for (Streetname) you must use (Streetname). If you don't use , whatever is between () will be retained and available for reference through the variables $1, $2 etc... Exemple, in the sentence "It's worth noting that (StreetName) can be anything...(Post), (TreeStump)", $1=StreetName, $2=Post, $3=TreeStump
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If I want to do a if-statement, wich one is the most correct way?[code]Of course, both will work but to me, the second way looks more correct. I feel that it's much easier to understand what's actually going on, especially if there are several expressions to be evaluated. But my guess is that there is no difference in preformance, or am I wrong?
View 4 RepliesI am having an issue that I hope someone has a solution regard the Component One Spell checker control (version: 2.2.20082.82)... I am currently using the C1.Win.C1Spell.C1Spell control on a windows form application written in VB.net. The user will enter notes into a text box and push a button on the form that will call the .CheckControl() method and passing in the notes text box to perform a spell check on.
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I have this code
Text1.Text = Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData)
but, when I run it, it produces an error: Compile Error: Variable not defined and it points to the second "Environment" string, the one inside the parenthesis. Is there a reference that I should be enabling?
The program is currently trying to pull information from three different database tables and compiling the information onto one screen, to do this i am using three different connections and a function to handle the data at each stage. The issue is as my code hits PageLoadStage of "2" and runs the QueryDatabase() Function i am encountering an error of: "OleDB exception unhandled: No value given for one or more of the required parameters." This occurs on line 15 of the first code snippet. Can anyone explain this and/or identify any code issues if that is the cause.
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I was looking for some stuff online, and i was looking through my reference sheets for vb.net, but it seems in the code i have found, there is declare in methods. Below is an example i am talking about. The thing is, that i dont recognize it and believe that it is an earlier version of Visual Basic ( 6 or earlier) which used it. Should i just keep looking for different code?
Public Declare Function RegOpenKey Lib "advapi32.dll" Alias "RegOpenKeyA" (ByVal hKey As Long, ByVal _
lpSubKey As String, phkResult As Long) As Long
Goal: Find information on how to implement a method which will check if a certain DSN exists, and then if it does, extract the information and use the information for connection purposes.
I have a text box where i am entering numbers of double datatype andon the Keytdown event of the textbox some checks take pace and in certain circumstances I want to be able to stop the user from entering other information until they enter the right information in the textbox (where it says right here) . now when I say exit sub the textbox somehow loses focus . but this is not how I want it to be I want the textbox to remain with the focus so the user can change the information . How can i go about this. And the other thing is why is my txtDestPayRate1.Focus() just befor the exit sub not working?
Private Sub txtDestPayRate1_KeyDown1(sender As Object, e As System.Windows.Forms.KeyEventArgs) Handles txtDestPayRate1.KeyDown
If e.KeyCode = Keys.Enter Then
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I am designing a backup/restore utility for work.atm i have been able to populate field for PC name, IP address, MAC address, number of printers installed on the PC but i am wondering is it possble to get all the printer information 'with the click of a button' to print all information like the prnmngr.vbs script down.I am able to run a batch file but i wanna get it to go from that app or even embed to batch file to the app and run it form there .
View 4 RepliesThe following line of code gives a warning with Resharper: 'Comparison of floating point numbers with equality operator. Possible loss of precision while rounding values.'
Dim samples() As Single
If samples(i) = Nothing Then
samples(i) = _mPreviousSamples(i)
End If
What is the best way of checking if a value is present?
How can i find out whether a BOM is present in a file or not. Depending on the presence of BOM i need to parse a UTF-16,UTF-8 file else I have to display Incompatible format.Kindly tell me what is the procedure to find if BOM is present or not. I have tried using FF FE for UTF-16 and for UTF-8 Bom. but i need to find whether this BOM is present or not how can i do it in VB.Net
View 2 Repliesi am getting following error when i am running AJAX enabled ASP.Net application
The control with ID 'FilteredTextBoxExtender1' requires a ScriptManager on the page. The ScriptManager must appear before any controls that need it.
even though i have ScriptManager in my page
<form id="form1" runat="server">
<asp:scriptmanager id="ScriptManager1" runat="server" />
<div>
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I have a web application with a number of pages, I would like to display the sitemaps for this application diagrammatically, is there a professional/recommended tool for doing this? I am using MS Word using flowcharts, but it doesnt look very professional.
View 1 RepliesI'm an avid programmer, and I'm trying to teach myself more professional practices, but Ilook over my code, and point out any mistakes, or bad practices I may have attached to this actually working bit of code. It consists of a procedure for retrieving, sending, and above all connecting to a server program. As for the various amounts of sloppy commented out code, after a long time clearing my head, I came to my senses so to speak.
Imports System.Net.Sockets
Imports System.Text
Imports System.Threading.Thread
I would like to know if it's possible run a form without present it in the screen...
View 14 RepliesI am in the process of creating a program that is linked to a database. I want to automatically generate a reference number that is not already present in this database, to do this i know i am going to need to search the database to check whether that number is already present or not. But I am unsure of the best way to go about this. I am using an access database and vb.net.
View 8 RepliesI've been getting the following error from time to time and have been unable to determine the cause of it:"The given key was not present in the dictionary."The line that this is occurring on is:If CType(ViewState("FieldType"), MYClass.FieldType) = MYClass.FieldType.ShowOnDirectory ThenI have no idea as to why it is throwing this exception on this line. I thought that perhaps an invalid value was being placed in the ViewState so I tried while debugging setting the value to Nothing and setting it to a value that wasn't in the enumeration and it still works. I was originally storing the enumeration in ViewState and then went to storing just the Integer equivalent in there
View 4 RepliesI'm working on a ASP.NET website project using VB.NET as backend code. I was looking for a way to show the header/footer of a gridview even if no data is present. I'd like to use this solution as it looks pretty clean (although it's written in C#): link I have converted the code using an online tool, resulting in: [URL] This however shows an error on line 77: "Events cannot be declared with a delegate type that has a return type"
View 1 RepliesI've started building a small game where you move around a PictureBox control with keystrokes using the arrow keys. Everything was working fine....until I added a button.
Now the button steals the focus so that every time I hit an arrow key hoping to move my image, it just selects the button.
Is there any way to make the button selectable only by mouse click?
I have an XML document that starts like this:
<GMRCTranDS xmlns="http://tempuri.org/GMRCTRAN.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<FILENAME>M05167P1000025T22330</FILENAME>
[Code]....
i am trying to validate an email address by making sure that there is an @ symbol present in the text box. So far i have the following code.[code]I get a blue line under the "@". How do i get this to work? Or is there a better way to do this?
View 6 RepliesI use the media player tool in my program and just found out that some people get a serious exception on the loading of the program if they choose not to enable media player. How can I make it so that if they don't have media player enabled that the program won't crash?
I don't know where the designer puts the info to load certain controls, nor do I know how to make the program skip loading a control if it doesn't work.
I need to enable /disable Nic I have a system with two nic cards "Local Area Connection" and Local Area Connection 2" my code will enable and disable the second nic no problem but when I try to disable /Enable "Local Area Connection" it sees the nic but disables "Local Area Connection 2" code to the Enable NIC.[code]...
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