.NET (Core and Framework)

Alan N29-Jan-13 6:33

Alan N

29-Jan-13 6:33

Array.Copy won't work as it does not resize the destination array (pdfBytesSyllabus) to hold the additional data from pdfBytesCenter.

The steps required are
1) Create a new array of sufficient length to hold both arrays
2) Copy pdfBytesSyllabus to the new array at index 0
3) Copy pdfBytesCenter to the new array at index pdfBytesSyllabus.Length

Much the same thing could be done with a generic List Of Byte, which is really just an implementation of a resizable array with a lot of useful methods added.

wajeetalohana30-Jan-13 0:30

wajeetalohana

30-Jan-13 0:30

Hi Eric Whitmore

Might possible u r making mistake in defining the number of items to be copied.
Kindly review the the following link.
http://msdn.microsoft.com/en-us/library/y5s0whfd.aspx?cs-save-lang=1&cs-lang=vb#code-snippet-2[^]

Dave Kreskowiak30-Jan-13 0:53

Dave Kreskowiak

30-Jan-13 0:53

Uhhh...no. Alan nailed the problem exactly. You're just guessing at it.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Pete O'Hanlon30-Jan-13 1:21

30-Jan-13 1:21

As Alan has said, the problem is to do with the fact that the array isn't big enough to contain this. A simple way to fix this is to create a generic list of bytes and add the data into it. You can easily get an array out of this like this:

Dim pdfData As New List(Of [Byte])(pdfBytesSyllabus.Length + pdfBytesCenter.Length)
pdfData.AddRange(pdfBytesCenter)
pdfData.AddRange(pdfBytesSyllabus)
' To get an array, just use
Dim cumulativePdfData As Byte() = pdfData.ToArray()

I was brought up to respect my elders. I don't respect many people nowadays.

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Eric Whitmore30-Jan-13 2:16

Eric Whitmore

30-Jan-13 2:16

Thanks Alan/Pete,

Code worked great!

Eric

Pete O'Hanlon30-Jan-13 2:27

How to show XPS navigation tree

30-Jan-13 2:27

I'm glad I could help.

I was brought up to respect my elders. I don't respect many people nowadays.

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Martiniak28-Jan-13 19:25

Martiniak

28-Jan-13 19:25

Hi,

In our WPF application we need show XPS document with navigation tree.

Can you help me, how can I build navigation tree from XPS document?

Thanks.

Re: How to show XPS navigation tree

Richard MacCutchan29-Jan-13 3:30

Richard MacCutchan

29-Jan-13 3:30

1. There is a specific forum for WPF questions.
2. Please explain what you mean by "build navigation tree from XPS document"?

Re: How to show XPS navigation tree

Pete O'Hanlon29-Jan-13 4:57

29-Jan-13 4:57

The first thing you need to do to build any form of tree (and I'm assuming you are talking about a feature similar to the document outline in Word), is to parse out the document so that you can relate the structure together. I would start with this[^] if I were you.

I was brought up to respect my elders. I don't respect many people nowadays.

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

In-Depth Book for CLI

Dominick Marciano28-Jan-13 14:56

Dominick Marciano

28-Jan-13 14:56

I'm currently reading a book to learn about creating a compiler and/or interpreter for your own language (Writing Compiler and Interpreters by Ronald Mak). I've been learning a lot from this book, however the author uses Java to create the entire framework and the compiler emits Java byte code.

As I've been working though the samples I'm porting the Java code to VB.NET since I use VB.NET for all my other programming. I haven't reached the chapter on building the compiler but when I do I would rather have the compiler emit CLI code just as Visual Studio does when you build a .NET application.

Unfortunately I don't know CLI code but this seems like a good time to learn. I already downloaded the ECMA standard but I learn must better and quicker from books that give concrete examples and implementations.

Does anyone have any recommendations for any books that teaches about CLI code and preferably have example code that I can work with as I'm reading?

As a side note (since this has been brought up to me by other on numerous occasions) I'm not creating this custom language expecting it to take off and be the next big thing. I'm doing it for two reasons: 1) Academic purposes; 2) My company uses specialized measurement tools that produce large data sets that is hard to program for just because unique nature of the data. So I'm looking to create a domain specific language to handle some manipulation of the data.

Thanks in advance for any recommendations.

Richard MacCutchan28-Jan-13 22:37

Richard MacCutchan

28-Jan-13 22:37

DisIsHoody wrote:
My company uses specialized measurement tools that produce large data sets that is hard to program for just because unique nature of the data.

Data is data, and can be handled by any language that currently exists. Your time would probably be better spent writing the code to do it, particularly as VB.NET emits CLI code, which is what you are hoping to do with your new language, so the end result will be the same.

That being said, you may like to look at some of these links[^].

Pete O'Hanlon28-Jan-13 23:19

28-Jan-13 23:19

As a starting point, what you are looking at is commonly known as a Domain Specific Language. I'd suggest that you start by having a look at this[^] article. Read it through a few times to make sure you fully understand it.

I was brought up to respect my elders. I don't respect many people nowadays.

CodeStash - Online Snippet Management | My blog | MoXAML PowerToys | Mole 2010 - debugging made easier

Gerry Schmitz29-Jan-13 5:41

Gerry Schmitz

29-Jan-13 5:41

Mak generates "intermediate code" from the scanning / parsing phases which he eventually interprets or compiles.

For the intermediate code phase, I would suggest you swap in the .Net framework's System.CodeDom classes for building language independent code graphs and ultimately generating assemblies (instead of bothering with MSIL).

jschell29-Jan-13 13:37

jschell

29-Jan-13 13:37

DisIsHoody wrote:
I'm currently reading a book to learn about creating a compiler and/or interpreter for your own language (Writing Compiler and Interpreters by Ronald Mak).

Presumably you already know about the Dragon book (google 'compilers dragon book')

As for CLI examples you can look to the Mono project and the Mono compiler

http://www.mono-project.com/CSharp_Compiler[^]

Presumably the book you have also discusses Yacc/Lex which might be more useful if you are creating multiple languages.

Extract MDE File data to CSV

Dominick Marciano30-Jan-13 14:40

Dominick Marciano

30-Jan-13 14:40

@Richard: I've actually already written software to handle the data. I was going to use this data for this academic project just so I'm working with something real instead of just working with an abstract idea.

@Gerry: I've read about that feature, however I wanted to work with MSIL directly simply because I feel it will give me a deeper understand of the .NET Framework and hopefully, in the long run, help me written better and more efficient code.

@jschell: I was torn between getting the book I did and the Dragon book, but I decided to go with this book first and leave the Dragon book for second. The Dragon book seemed to deal mostly with theory, whereas this book doesn't go so much into theory but gives you actually code to demonstrate how to accomplish the different items. I tend to learn better with actually examples and exercises instead of theory and pseudo-code, however I plan on reading the Dragon book once I finish this one.

In the end I'm looking for a book that will work through MSIL similar to how this book does it. Each chapter building on the previous ones with actually code examples that write MSIL that in the end will lead to a fully functioning program; for me this is the best way to learn.

sny hmt27-Jan-13 16:17

sny hmt

27-Jan-13 16:17

Hi I'm working with an application that can extract or export an MDE File data to CSV, can someone give me a pointers how to do this.
I'm using VB.NET 3.5.

Thank you!

Re: Extract MDE File data to CSV

Richard MacCutchan27-Jan-13 22:44

Richard MacCutchan

27-Jan-13 22:44

Depending on the format of the MDE file you can use the
StreamReader[^] or BinaryReader[^] class to read the data. Then it is just a matter of formatting each line of data into the correct CSV format and writing it out with a StreamWriter[^].

Book recommendations for MS course 20486A (MVC 4)

DoStuffZ24-Jan-13 1:24

DoStuffZ

24-Jan-13 1:24

Hi
I'd like to ask you about book recommendations for MS course 20486A, primarily doing MVC 4.

Course description: http://www.microsoft.com/learning/en/us/course.aspx?ID=20486A[^]

I found a couple of titles, but I'd like your recommendations.
http://www.asp.net/mvc/books[^]

Book Review: Practical ASP.NET MVC 4.0[^]

I have been doing the aspx .NET C# solution for the past 3years now. (aspx/sep. c# codebehind - bll - dal - stored procedures). I am schooled in the old OOP days (OOA, OOD) that was hip around 2000. It was shortly before C# .NET was widely accepted. We were told about .NET, but never saw it. From what I have researched on MVC, it looks very promising and OO.

Google Maps

rongqu23-Jan-13 4:31

rongqu

23-Jan-13 4:31

Hi, I am a new learner using the google maps. I am stopped by adding Ajax framework. I could not find the reference as shown on Part1. Please help. Thank you.

Re: Google Maps

Pete O'Hanlon23-Jan-13 5:41