We all know that this method will convert an expression text (string) to precompiled VisualBasicValue. Refer to this documentation for more details
VisualBasicDesignerHelper.CreatePrecompiledVisualBasicValue
I must convert string data from a CNC that is arithmetic expression to a number that I can use in a VB application that I wrote. The following is what I get out of the cnc. [18722*65536+19377]/67108864. I need to evaluate this expression in my VB ap. The format of the string is not always the same as what I have illustrated.
View 2 RepliesI want to create a VB.NET function that will take a string containing accented characters and convert it into the non-accented equivalent. My particular requirement is associated with non-English names. Some real examples are timac, Huki, Bttcher, Bj¸rnbakk, rnrohr and Synneg. I would want to convert those examples to Stimac, Hukic, Bottcher, Bjornbakk, Furnrohr and Synnevag, respectively.I am aware that a(with an umlaut accent) is often replaced by 'ue' but replacing it with u is better for my purposes. Similarly, I want to replace with o, rather than 'oe'. I am assuming that all the required conversions will need to be hard-coded in the function.Are there any slick ways to write such a function, ideally preserving the capitalisation in the original string?
View 12 RepliesWhat is the vb.net expression of this c# expression ?
Frame.GetController<ShowNavigationItemController>().CustomShowNavigationItem += new EventHandler<CustomShowNavigationItemEventArgs>(WindowController1_CustomShowNavigationItem);
i didn't want to trust this one to any number of online conversion websites that I often use.I don't need to convert the declarations, just the expression '(byte)((flen & 0xff00) >> 8)'in
byte[] sendFrameData = new byte[280
ushort flen
sendFrameData[7] = (byte)((flen & 0xff00) >> 8);
I would like to know the equivalent expresion in VB for this C# expression: Container.TotalRowCount > 0 ? Math.Ceiling(((double)(Container.StartRowIndex + Container.MaximumRows) / Container.MaximumRows)) : 0
View 3 RepliesI have converted the following C# code to VB.NET.But I am unable to find the equivalent of C# "Unchecked" keyword in VB.NET.Below is the C# Code and following the C# Code is converted VB Code.After conversion and building the VB Code I am getting the error :"Constant expression not representable in type 'UInteger'." [code]
View 11 RepliesI will probably sound like a bad developer here, but I am attempting to convert some code from the following page from C# to VB.NET:The code I am having trouble converting is from Step 4 of "Joining a Multicast Group" on the page, and here is the code with the comment lines removed:
private void Join()
{
_receiveBuffer = new byte[MAX_MESSAGE_SIZE];
[code].....
I'm having a little trouble converting some LINQ to VB.[code]Online code translators are not helping, and my unfamiliarly with VB LINQ is not very good.
View 2 RepliesSituation: Trying to learn Visual Studio and VB. I have been using Expression web to build web sites for several years. But not alot of programing within them.I have started a project using Visual Studio 2010 Pro and am working in VB. I am converting one of my sites from Expression over to VS and want to start using the Code Behind model for all of my web sites on this one and all future sites. I have a simple form that works on my old site but in the new site the I have no idea as to how to set up the Namespace's (System.Text and System.Net.Mail). Does it go on the page with the form or on the VB page? If someone has a good example of how to set up a form for emailing the results I would really appriciate looking at a copy of it.I use VB as I am the most familiar with it. I have no experience yet with Java or PHP.
View 2 RepliesSimple question: How does this translate to VB.Net
Dispatcher.BeginInvoke(() => listening = false);
listening is a variable on the class (boolean). Converters online didn't nd what we've come up didn't compile:
I have a DateTime Picker that I have set Format to "Custom" and CustomFormat to "dd/MM/yyyy HH:mm"
When the user changes the date time it all works fine and update the table no problem.
If the user does not change the date time I get the error[code]...
I am working with a precompiled ASP.net website. I have most of the *.aspx.vb files, but I am missing some of the library files, and only have the DLLs. Can I still selectively compile aspx.vb files? When I just hit build, It errors with 'This application is already precompiled'?
View 1 RepliesWhat I need is to be able to put in a SortedList a combination of two fields that are non-unique, but the pair is (like database composite keys).More precisly, i have my list, and i want to be able to do this with it
Dim myList = New Generic.SortedList(Of String, String)
myList.add("aaa","aaa")
myList.add("aaa","bbb")
[code].....
I have a solution which contains multiple WAPs (Web Application projects). Every WAP has it's own Web Deploy project in order to be able to precompile these sites. On one of the web app we are created a new WCF file with
[Code]...
I have a nullable database field of type varchar. I am writing a unit test for a service method that retrieves the value of this field. The service method uses a custom DAL that returns a value of String.Empty if the database field is Null (this is desired behaviour).
[Code]...
I have a vendor application which is precompiled. I want to add a template column into the aspx page, however I'm having some difficulty.This works for me fine as "Available" is a column bound to the asp DataGrid:
<asp:TemplateColumn HeaderText="test">
<ItemTemplate>
<asp:Label ID="Label2" Text='<% #DataBinder.Eval(Container.DataItem, "Available") %>'
[code].....
I need a regular expression that can validate that a string is an alphanumeric comma delimited string.
Examples:
123, 4A67, GGG, 767 would be valid.
12333, 78787&*, GH778 would be invalid
fghkjhfdg8797< would be invalid
This is what I have so far, but isn't quite right: ^(?=.*[a-zA-Z0-9][,]).*$
for Types, we could call toString and convert that into a String, but i would like to do the reverse i.e getting a Type object from its string.
View 5 Replieswhat is the vb.net equivalent to vb6 String(number,character?
View 3 RepliesAs a non .net programmer I'm looking for the .net equivalent of the old vb function left(string, length). It was lazy in that it worked for any length string. As expected, left("foobar", 3) = "foo" while, most helpfully, left("f", 3) = "f".
In .net string.Substring(index, length) throws exceptions for everything out of range. In Java I always had the Apache-Commons lang.StringUtils handy. In Google I don't get very far searching for string functions.
Edit:@Noldorin - My first encounter, although it took me several seconds to do the same in c#:
[Code]...
Note the static class and method as well as the this keyword. Yes, they are as simple to invoke as "foobar".Left(3). See also c# extensions on msdn.
To convert a string to proper case what's .NET equivalent of Visual Basic strConv Function?
View 5 RepliesI'm having a problem converting a string of letters to a string of numbers. I've tried:
Dim A As String = ""
Dim strOutput As String = ""
Dim X As Integer = 0
[Code].....
how can I use a string ( string = "my.resources.imagename" ) as an expression? like this:
dim imageString as string = "my.resources." + name 'name will be declared and is the name of the person of who the picture in the resources is picturebox1.image = (expression from string here)
is this possible? if yes, how then? I searched all over the internet but I couldn't find it
I realize the code listed below, whose serial port using string formatting which I inherited is complicated. It formats a Date obtained from a DatePicker control into a "yyyy-MM-dd HH:mm:ss" string format to send to a hardware device to be stored via Serial Port retrieves the date from the device and displays to user What I'm trying to do is port the code for use in a Socket rather than Serial Port which wants a Byte Arrray of the same Date Time string variable. I can't figure out how to encode and convert to Bytes the string value used in the Serial Port version. The evolution of the process is listed from top to bottom.
[Code]...
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.
im doing a simple calculatro and was happy with the way i done things .. a ew member variables and a properties:
Private MVAR_Number1 As Decimal
Private MVAR_Number2 As Decimal
Private MVAR_Operator As Char[code].....
he want to add this:
Dim Operators() As Char = ("+", "-", "*", "/")
Dim OpPos as Decimal
OpPos = Expr.IndexOfAny(Operators)[code].....
Just drives me mad how complex this is all getting for something so simple, fell like giving it all up .
I have like a three word expression: "Shut The Door" and I want to find it in a sentence. Since They are kind of separated by space?
View 6 RepliesI 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.
Is 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.
