I've stumbled upon this code:
var knownSeparators = new[] { "\", "/", "|", "." };
return knownSeparators.FirstOrDefault(path.Contains);
where path is a string and the return value should be a string as well.
Allthough path.Contains' intellisense suggests a parameter, it works fine without one.
How does this work exactly? Is there any way to copy this behavior in vb.net?
I'm trying to add a handler, but as soon as I'm targetting a method that has parameters, the handler fails. This is the simple code:
AddHandler App.Current.RootVisual.MouseLeftButtonUp, RootVisual_MouseLeftButtonUp
Private Sub RootVisual_MouseLeftButtonUp(ByVal sender As Object, ByVal e As MouseButtonEventArgs)
[code]....
I am trying to write a regular expression string match in vb.net. The condition that I am trying to implement is that the string should contain only alphabets and must contain atleast one letter of both lower and upper case. i.e AAA-fail, aaa-fail, aAaA-pass.
The regular expression that I have come up with is ^(([a-z]+[A-Z]+)+|([A-Z]+[a-z]+)+)$
In my MVC Web App I am running an ActionResult with the following signature: Public Function Create(ByVal article As Article_Ad) As ActionResult And in my ASPX page I have declared the following form which fields correspond to the model, which is strongly typed:
[Code]...
Is it really impossible to create an extension method in C# where the instance is passed as a reference?
Heres a sample VB.NET console app:
Imports System.Runtime.CompilerServices
Module Module1
[code].....
Banging my head against a wall here. I have a query that looks like this.
SELECT FirstName, LastName, Address
FROM Members
WHERE FirstName LIKE 'JOE%'
That works absolutely fine in query wizard and the DataTablePreview data window. However, when I do this.
SELECT FirstName, LastName, Address
FROM Members
WHERE FirstName LIKE ?
I get nothing when I run the fillby method. If I change the LIKE to =.
SELECT FirstName, LastName, Address
FROM Members
WHERE FirstName = ?
Everything works great. I need to get LIKE working though so I can wildcard search.
I'm using the SQL server OLE db connections if that means anything.
UPDATE
Using the LIKE operator doesn't work at all. When I just swap out = for LIKE. Nothing is returned.
I have buttons generated through code (dynamically). I have to associate an event (the same) to them. I use AddHandler button.click, AddressOf mysub.The issue is that mysub gets a string (mysub(string)), but AddressOf doesn't accept a parameter inside the routine. How can I do this? Using also an alternative to AddressOf.
EDIT:
Public Class Form1
...
Private Sub mysub(ByVal sender As Object, ByVal e As System.EventArgs, ByVal str As String)[code]......
The string itself contains things like "random" & random.next(1,3) & "random2" etc. The string registers all of this as a string and doesn't actually calculate random numbers.Is there any way to fix this?
View 8 RepliesI have this bit of code that is being converted from vb6 to vb.net. I need to know what LenB is doing in this bit of code.
Dim singleValue As Single 'var for conversion use(4byte -> 1single)'
Dim bytes() As Byte
Dim valueB() As Byte 'this gets set elsewhere and is redim-d to its size'
[code]....
Am I right in thinking that bytes is always ReDim'ed to the same size? By the looks of it 4 elements.Why then use LenB to ReDim if you could just use a number? And why ReDim in the loop at all?
In the Expression builder window in SQL Server Reporting Services 2008 R2 under Common Functions -> Text -> Item, there is an expression called Filter.This appears to correspond with the Strings.Filter method in the .NET framework. The description of Filter is as follows: Returns a zero-based array containing a subset of a String array based on specified filter criteria.The Example is as follows:
=Filter(Parameters!MultivalueParameter.Value, "3", True, CompareMethod.Binary)
The example and description imply that you can inspect a multi-value parameter to see if at least one of the selected values is equal to the Match parameter. I haven't been able to get this to return anything other than #Error which implies the multi-value parameter is not a one-dimensional array. Parameters!MultivalueParameter.Value.GetType().ToString() returns System. Object[].
how to get this to work? I'm using the following work around to check if values were selected in the multi-value parameter:
=IIF(InStr(" " + JOIN(Parameters!MultivalueParameter.Value, " ") + " ", " 3 ", CompareMethod.Text), false, true)
I would prefer to use the Filter function if it supports this kind of check.
I've been having a glitch in my program for the last couple of hours in development. After some investigation, shows that one of my string variables apparently not what it says it is. Lets take a look:
[Code]...
The FxCop says in a rule that generic List should not be exposed to the outside world.But I do not understand why and what is the replacement for the generice List? url...
View 4 RepliesMy program uses parameters from the calling program in this format
parameter1/parameter2/parameter3
parameter2 is a datafile path which may sometimes have a space like :
C:Program Files est company
I did this as a work around
Sub Main(ByVal Args() As String)
dim cArgs as string=""
Dim J As Integer
For J = 0 To Args.Length - 1
cArgs = cArgs & " " & Args(J)
Next
And then used the string split function. Is there a proper way to work with spaces?
For example, assume that in my assembly, in Namespace A, Class B, there is an instance method with the following signature: void Test(string someString, int someOtherParm, string someOtherString ); This method is called multiple times, from multiple places in the assembly. I would like to be able build a list of all invocations of this method and the value of the someString/someOtherString (assuming they are hardcoded). In other words, I like to extract a list of calls like the example one below, if they happen in the assembly somewhere: Test("some text", 8, "some other text");
View 1 RepliesUsing the following code:
[Code]...
I'm working with referenced VB6 DLL's. The problem is that the results of a method/function call are not the same. Below the code examples:
First VB.Net Dim Validations() As String myErr = myEntry.ValidateLine(Validations)
When validation fails, the string array Validations is filled with the error description string. I've tried to accomplish the same in C#:
private string[] valArray = null;
sdkError = sdkEntry.ValidateLine(valArray);
Does anyone have an idea why I can't get C# to fill the string array? Additionally, the function in VB is called with ref to a System.Array ValidateLine(ref System.Array ValErrors), perhaps it has something to do with this?
I'm receiving a byte array from a network device by using the TcpClient class and as I have no idea how much data will be being sent I have to just declare a buffer that is X number of bytes long and keep reading into that until I've got all of the data. I then convert this byte array to a string using Text.Encoding.ASCII.GetString but the problem is that this gets any null bytes that were at the end of the buffer after the string and it includes them in the string. This then means when I do String.EndsWith it doesnt work as I would expect it to because there are just loads of 0 bytes at the end of the string.
Once I had realised that was what was happening (which took a long time as these null bytes are completely invisible when you are looking at the data in String form) I thought fine I'll just use Trim on the string but I've found that this doesnt make any difference at all. I thought Trim was supposed to remove any blank space from the start/end of a string, which I assumed would include empty bytes as well.
So is there any alternative I can use that will trim the empty bytes off the end or do I have to do it the 'manual' way and loop through my byte array before converting it to string and remove any null bytes? One thing that has just popped into my head as I'm typing this is to try using the Chr method and pass it 0 and combine that with Trim like so:
I'm writing a query to select all records that has any part of parameter. I have one table called Employees. Some people have name like this: John David Clark If the parameter is
[Code]....
I should be able to get result back as long as there's a match in the parameters. If I use Function Contains (q.FirstName & " " & q.LastName).Contains(employeeName), I will not get any result back if employeeName is "John Clark" Function Contains looks only for next words from left to right. It doesn't match a single word at a time. So that's why I used this in the Linq to SQL:
[Code]....
I have a list of functions that I'm using throughout my .net application. Is there a way that I can include a file into the pages that require the functions without having to copy and paste the functions to each individual page?
The large majority of pages I've found on MSDN are either toward people who are already familiar with .net to those who have never programmed before and just starting. I haven't been able to find one for people who are versed in programming and just need a list of functions and methods.
I am getting error [07002] the # binded parameters < the # of parameters makers, i checked both parameters were perfect even though i am getting this error here is my code
[Code]...
Never before did i realize the neccessity to scrap the User Account Control, other than for reasons it was simply annoying, until i became a developer. I have an application that does nothing more than remove and create files within its own directory. Are you telling me every application that creates local files require admin rights? Surely something is wrong here. Can this not be circumvented? How do other developers overcome this issue?
[Code]...
If I wrote some software that used an access database to store data. If I then gave the code to a third party, who ran this sofware on his Pc. Would the code work , if his Pc did not have the access database installed.I read in some article that this would still work? If this is true, how could this work? If the above software had an form which required the client to input details of an order. When the order details were being processed by the code where would it store them if no access database was installed on that pc.
View 17 RepliesI'm trying to code a spelling checker into VB.NET 2010.It'll check the RichTextBoxFindandPrint (my version of RTB) control.However the solutions on the internet require Word to be installed. [URl]..
View 26 Repliesi need to send e-mail's from the iis 6 via smtp server that are 2 diferent machines
i have this exampel but is not working
Public Sub SendMail(ByVal from As String, ByVal [to] As String, ByVal subject As String, ByVal body As String)
Dim mailClient As New SmtpClient(test.MailServer)
[Code]....
My application seems to require .net framework 4 to run. Hence not working on standard XP installations until .net 4 is installed. How do I make it so that it only needs 3.5, or whatever XP uses natively?
View 5 RepliesI have a text box called TxtSearch on my form. The value entered should always be numeric before the search can be done if its any other data type the following Message box is give - Only a numeric value is allowed in this field", MsgBoxStyle.Information, "GCPM.. (Code shown below)
Private Sub TxtSearch_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TxtSearch.KeyPress
If Char.IsDigit(e.KeyChar) = False And Char.IsControl(e.KeyChar) = False Then[code].....
Now, when you copy and paste a String value on the textbox - TxtSearch the KeyPress doesn't work. The TxtSearch doesn't prompt the message and when you click the Search Button the application crashes - dsiplaying an error converting data type varchar to numeric.. What I want to do is if someone uses the copy and paste tool to enter the value in the textbox- TXTSearch and there is a datatype not numeric the message prompt is called ..
I am trying to create a setup deployment file, but some dll files require dependencies to be identified.
View 1 RepliesMake program require a registration number to run?
View 4 RepliesFor my user system, I require each user to have a unique id. The reading in and saving of the user data is all done, but now I'm focusing on adding new users. In my add user dialog, I have the information fields required to create a new user, one of which is the ID (which must be unique). For this I have created a function that I thought would always give a unique id but it does not. paste the code below:
Function getnextuserid()
Dim id As String
Dim unique As Boolean
[CODE]...
Is there any way to use VB 2008 to create an app to work on a computer that does not require .NET 2.0+? If there is no way to install .NET on the target computer, is there any way to write the app in such a way that it works on the computer?
View 12 Replies