Refactor 'switch/case' That Is Based Enum Value - C# Discussion Boards

Re: I wan to make USB Bolcker using vb.net or C#

George Jonsson9-Oct-14 16:28

George Jonsson

9-Oct-14 16:28

Eh, what software?
Is this a new question or related to blocking USB ports?

Re: I wan to make USB Bolcker using vb.net or C#

Deb0079-Oct-14 19:30

Deb007

9-Oct-14 19:30

yes its related to USB port.I implement the software it work in windows platform. I want to run this software in Linux platform.Is it possible?

Thanking You,
Regards
Debapriyo Saha

Re: I wan to make USB Bolcker using vb.net or C#

George Jonsson9-Oct-14 21:20

George Jonsson

9-Oct-14 21:20

I have no idea, but you do have a browser on your computer, right?
Then follow these steps and you will find the answer.

1. Start your browser.
2. Select your favorite search engine, like Google or Bing or whatever.
3. Copy this string "block USB ports linux" into the search field.
4. Press Enter or click the search button.
5. Select one of the links that will appear.
6. Read about the subject.
7. Solve the problem.
8. Done.

Re: I wan to make USB Bolcker using vb.net or C#

Sibeesh KV26-Sep-14 0:19

Sibeesh KV

26-Sep-14 0:19

If you just want to disable/enable all USB ports you can use this code. Note, you must have administrator privileges to change the registry.

//disable USB storage...
Microsoft.Win32.Registry.SetValue(@"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR", "Start", 4, Microsoft.Win32.RegistryValueKind.DWord);

//enable USB storage...
Microsoft.Win32.Registry.SetValue(@"HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR", "Start", 3, Microsoft.Win32.RegistryValueKind.DWord);

Read More : code for USB Blocking in c#[^]

Please up vote if it helped you Smile | :)

Thanks And Regards
Sibeesh

retrieving contents from word file using c# windows application

Reshma Chandran24-Sep-14 18:31

Reshma Chandran

24-Sep-14 18:31

I am having a no of word files .Each word file have some common heading.I want to retrieve the content under the common heading from all files.
For example for a no of resumes have the same heading like objective,qualification etc.I want to list the content under these particular heading using c#

Anybody know please help me to solve

Re: retrieving contents from word file using c# windows application

Sibeesh KV24-Sep-14 18:36

Sibeesh KV

24-Sep-14 18:36

Read Read Document Text Directly from Microsoft Word File[^]
and http://mantascode.com/c-how-to-parse-the-text-content-from-microsoft-word-document

PrintTicket in GetPrintJobInfoCollection?

murali_utr24-Sep-14 18:28

murali_utr

24-Sep-14 18:28

Here is my code. I Get the printticket from print job. I Need Printjob informations like copycount, media size, media type, duplex printing and other details. But I can default values from the printticket like copycount is always 1 and sometime no. of pages in job also comes 0. Now struggle with this problem. I Need Help to solve this problem.

PrintServer myPrintServer = new PrintServer(@"\\MyMachine");

PrintQueueCollection myPrintQueues = myPrintServer.GetPrintQueues();
foreach (PrintQueue pq in myPrintQueues)
{

if (pq.QueueStatus != PrintQueueStatus.Error)
{
foreach (PrintSystemJobInfo job in pq.GetPrintJobInfoCollection())
{
if (bNewJob == true)
{
PrintTicket pt = job.HostingPrintQueue.CurrentJobSettings.CurrentPrintTicket;
UpdateText("Current Copies : " + pt.CopyCount.Value.ToString());
UpdateText("Default Copies : " + dpt.CopyCount.Value.ToString());
UpdateText("User Copies : " + upt.CopyCount.Value.ToString());
UpdateText("Full Name :" + job.HostingPrintQueue.FullName.ToString());
UpdateText("Job ID : " + job.JobIdentifier.ToString());
UpdateText("Job Name : " + job.JobName.ToString());
DateTime dt = job.TimeJobSubmitted;
UpdateText("Submitter :" + job.Submitter.ToString());
UpdateText("Date:"+dt.Day.ToString()+"/"+dt.Month.ToString()+"/"+ dt.Year.ToString());
UpdateText("Hosted Server :" + job.HostingPrintServer.Name.ToString());
UpdateText("No of Pages :" + job.NumberOfPages.ToString());
}
}
}
}

Have A Nice Day!
Murali.M

Blog

Refactor 'switch/case' That Is Based Enum Value

Matt U.24-Sep-14 9:48

Matt U.

24-Sep-14 9:48

While this project I'm on is MVC, this question isn't specific to MVC, so I felt like this was the right place. Anyhow, we are using the Repository pattern for data access. One particular entity type, e.g. SharedObj, has several other entity types that the SharedObj entity can be tied to. Each is an IEnumerable, like this:

public class SharedObj
{
    IEnumerable<Obj1> Obj1s;
    IEnumerable<Obj2> Obj2s;
    IEnumerable<Obj3> Obj3s;
    // More entity collections
}

So when we add a child object to one of those collections of SharedObj, we have a method like this:

// 'entity' is of type 'SharedObj'

public void AddObj(ObjType objType, int objId)
{
    switch (objType)
    {
        case ObjType.Obj1:
            entity.Obj1s.Add(GetRepository<Obj1>().GetByID(objId);
            break;
        case ObjType.Obj2:
            entity.Obj2s.Add(GetRepository<Obj2>().GetByID(objId);
            break;
        case ObjType.Obj3:
            entity.Obj3s.Add(GetRepository<Obj3>().GetByID(objId);
            break;
        // case/break for each remaining entity type
    }
}

"ObjType" is an enumeration of object types. The "GetRepository" method calls "DependencyResolver.Current.GetService<irepository<t>>();" and we use Unity for dependency injection.

Is there a way to make a more generic "Add" call based on the supplied "ObjType"? Or is this the only concept that can be applied in order to achieve what we're doing?

djj55: Nice but may have a permission problem
Pete O'Hanlon: He has my permission to run it.

Re: Refactor 'switch/case' That Is Based Enum Value

Pete O'Hanlon24-Sep-14 10:07

Pete O'Hanlon

24-Sep-14 10:07

Map an Action to the enum in a dictionary and execute the appropriate entry when you need to use it.

Re: Refactor 'switch/case' That Is Based Enum Value

PIEBALDconsult24-Sep-14 10:54

PIEBALDconsult

24-Sep-14 10:54

Similar to what Pete said; I'd prefer to use a Dictionary<type,List<whatever>>

And I think that having AddObj perform GetRepository and GetByID violates the Single Responsibility Principle.
By passing in the object, you could probably also leverage generics and simplify things even more.

integrate any bill acceptor in my c# application

MaurizioFiorentino24-Sep-14 7:19

MaurizioFiorentino

24-Sep-14 7:19

Hello,
i need integrate any bill acceptor in my c# application. Can you help me please? Do you know if exist any library in c#?

Beste Regards.

Re: integrate any bill acceptor in my c# application

ZurdoDev24-Sep-14 10:05

ZurdoDev

24-Sep-14 10:05

You mean like PayPal or something? Where are you stuck? You'll have to contact whatever vendor you want to work with and get their SDK documentation.

There are only 10 types of people in the world, those who understand binary and those who don't.

Re: integrate any bill acceptor in my c# application

MaurizioFiorentino30-Sep-14 6:47

MaurizioFiorentino

30-Sep-14 6:47

Do you know any bill aceptor model that i can buy that have a sdk in c#?
i have't find a sdk in c# but only in visual c o java. Sigh | :sigh:

I need urgently to acept bill in my c# program.

thanks

Re: integrate any bill acceptor in my c# application

ZurdoDev30-Sep-14 7:15

ZurdoDev

30-Sep-14 7:15

I don't know of any products that will integrate with multiple payment processors, although there probably are some.

If you want to use PayPal then refer to https://developer.paypal.com/docs/api/[^]

There are only 10 types of people in the world, those who understand binary and those who don't.

Coding music rhythms

Navid Abyazi24-Sep-14 5:27

Navid Abyazi

24-Sep-14 5:27

Hi every one.
I want to create all rhythmic figures in music. I have an array for durations:

public static double[] duration_fltarray = new double[7];
    duration_fltarray[0] = 1;
    duration_fltarray[1] = 0.5;
    duration_fltarray[2] = 0.25;
    duration_fltarray[3] = 0.125;
    duration_fltarray[4] = 0.625;
    duration_fltarray[5] = 0.3125;
    duration_fltarray[6] = 0.15625;

This array shows music times: 1 - 1/2 - 1/4 - 1/8 and so on.
I think it should be written by recursive function, because I couldn't do it by while and for loop.

Now, I need all sorted figures that sum of them are equal 1. For example:
1
1/2 - 1/2
1/2 - 1/4 - 1/4
1/4 - 1/2 - 1/4
1/4 - 1/4 - 1/2
1/4 - 1/4 - 1/4 - 1/4
1/8 - 1/2 - 1/4 - 1/8
1/8 - 1/2 - 1/8 - 1/4
1/8 - 1/2 - 1/8 - 1/8 - 1/8
...
Of course, number of figures will be too many more if we add 1/16 and 1/32 and ... .
I can print them in a web page(response.write) or in a c console; it's not important. But the algorithm should be as simple as possible.
Thank you all.

Re: Coding music rhythms

ZurdoDev24-Sep-14 5:53

ZurdoDev

24-Sep-14 5:53

Where are you stuck?

There are only 10 types of people in the world, those who understand binary and those who don't.

Re: Coding music rhythms

Navid Abyazi25-Sep-14 7:00

Navid Abyazi

25-Sep-14 7:00

I think write my code truly, but it doesn't works.

Re: Coding music rhythms

ZurdoDev25-Sep-14 7:17

ZurdoDev

25-Sep-14 7:17

OK. But how can anyone help you?

There are only 10 types of people in the world, those who understand binary and those who don't.

Re: Coding music rhythms

PIEBALDconsult24-Sep-14 6:09

PIEBALDconsult

24-Sep-14 6:09

Sounds like homework. And I think your implementation so far is going to cause trouble -- particularly due to the use of floating-point values (integers will suffice). And I definitely wouldn't use recursion. Dead | X|

I'd also like to pass along a hint. Rather than starting from 1/1 and splitting, consider starting from 1/16 - 1/16 ... and work up to 16/16 (or 32/32, whatever).

I have finished an implementation that uses an enumeration to define the values and returns an IEnumerable of Lists of the values; it's pretty slick and not much code. What do you have so far?

Edit: Due to poor performance when considering 1/32 and 1/64, I may look into a stack-based approach rather than the brute-force iterative approach.

Comparisons between the iterative and stack implementations:

// 1/4
    6 rhythms found in 00:00:00.0000072
    6 rhythms found in 00:00:00.0000057
// 1/4, with dots
    8 rhythms found in 00:00:00.0000121
    8 rhythms found in 00:00:00.0000064
// 1/8
   56 rhythms found in 00:00:00.0015299
   56 rhythms found in 00:00:00.0008122
// 1/8, with dots
  114 rhythms found in 00:00:00.0015542
  114 rhythms found in 00:00:00.0008210
// 1/16
 5272 rhythms found in 00:00:00.0055043
 5272 rhythms found in 00:00:00.0024528
// 1/16, with dots
24098 rhythms found in 00:00:00.0125192
24098 rhythms found in 00:00:00.0074718

So it looks like the stack-based algorithm generally takes about half the time as the iterative version.

I still haven't performed a full run on 1/32 or 1/64.

modified 30-Sep-14 13:36pm.

Re: Coding music rhythms

BillWoodruff24-Sep-14 22:06

BillWoodruff

24-Sep-14 22:06

PIEBALDconsult wrote:
I have finished an implementation that uses an enumeration to define the values and returns an IEnumerable of Lists of the values; it's pretty slick

And wilt Thou share Thy shining-glory-code with mere mortals, here, below, on the darkling plain ? Smile | :)

« I had therefore to remove knowledge, in order to make room for belief » Immanuel Kant

Re: Coding music rhythms

PIEBALDconsult25-Sep-14 6:22

PIEBALDconsult

25-Sep-14 6:22

Please stand by for a Friday Programming Challenge... Big Grin | :-D

Re: Coding music rhythms

Navid Abyazi25-Sep-14 7:15

Navid Abyazi

25-Sep-14 7:15

Thank you for your answer.

1- How do I able to use 1/4(0.25) with integer?
2- I got what you said; good idea.
Of course, usually people start music with simple duration such as 1.

Could you please guide me more? I tried too much.

Re: Coding music rhythms

PIEBALDconsult26-Sep-14 8:08

PIEBALDconsult

26-Sep-14 8:08

1) What I did was pick the smallest fraction I wanted to use ( 1/4, 1/8, 1/16, etc.) and then keep track of how many I had. The denominator doesn't change; so you only need to keep track of the numerator. The resulting fraction can be reduced later if desired -- that's only a matter of display.

I also found that using 1/32 and 1/64 took a very long time with my technique.

Here are some of my enumerations and results:

  public enum Duration4
  {
    [System.ComponentModel.DescriptionAttribute("1/4")]
    Quarter = 1, 
    [System.ComponentModel.DescriptionAttribute("2/4")]
    Half    = 2, 
    [System.ComponentModel.DescriptionAttribute("4/4")]
    Whole   = 4
  }

{ 4/4 }
{ 2/4 , 2/4 }
{ 2/4 , 1/4 , 1/4 }
{ 1/4 , 2/4 , 1/4 }
{ 1/4 , 1/4 , 2/4 }
{ 1/4 , 1/4 , 1/4 , 1/4 }
6 rhythms found in 00:00:00.0057366


  public enum Duration4d
  {
    Quarter    = 1
  , Half       = 2
  , DottedHalf = 3
  , Whole      = 4
  }

{ Whole }
{ DottedHalf , Quarter }
{ Half , Half }
{ Half , Quarter , Quarter }
{ Quarter , DottedHalf }
{ Quarter , Half , Quarter }
{ Quarter , Quarter , Half }
{ Quarter , Quarter , Quarter , Quarter }
8 rhythms found in 00:00:00.0034388


  public enum Duration8
  {
    [System.ComponentModel.DescriptionAttribute("1/8")]
    Eighth    = 1 , 
    [System.ComponentModel.DescriptionAttribute("1/4")]
    Quarter   = 2, 
    [System.ComponentModel.DescriptionAttribute("1/2")]
    Half      = 4 , 
    [System.ComponentModel.DescriptionAttribute("1")]
    Whole     = 8
  }

{ 1 }
{ 1/2 , 1/2 }
{ 1/2 , 1/4 , 1/4 }
{ 1/2 , 1/4 , 1/8 , 1/8 }
{ 1/2 , 1/8 , 1/4 , 1/8 }
{ 1/2 , 1/8 , 1/8 , 1/4 }
{ 1/2 , 1/8 , 1/8 , 1/8 , 1/8 }
{ 1/4 , 1/2 , 1/4 }
{ 1/4 , 1/2 , 1/8 , 1/8 }
{ 1/4 , 1/4 , 1/2 }
...
{ 1/8 , 1/8 , 1/8 , 1/4 , 1/4 , 1/8 }
{ 1/8 , 1/8 , 1/8 , 1/4 , 1/8 , 1/4 }
{ 1/8 , 1/8 , 1/8 , 1/4 , 1/8 , 1/8 , 1/8 }
{ 1/8 , 1/8 , 1/8 , 1/8 , 1/2 }
{ 1/8 , 1/8 , 1/8 , 1/8 , 1/4 , 1/4 }
{ 1/8 , 1/8 , 1/8 , 1/8 , 1/4 , 1/8 , 1/8 }
{ 1/8 , 1/8 , 1/8 , 1/8 , 1/8 , 1/4 , 1/8 }
{ 1/8 , 1/8 , 1/8 , 1/8 , 1/8 , 1/8 , 1/4 }
{ 1/8 , 1/8 , 1/8 , 1/8 , 1/8 , 1/8 , 1/8 , 1/8 }
56 rhythms found in 00:00:00.0045673

Re: Coding music rhythms

Pete O'Hanlon24-Sep-14 8:40

Pete O'Hanlon

24-Sep-14 8:40

What musical illiterate set this? Where is the support for dot notation?

Re: Coding music rhythms

PIEBALDconsult24-Sep-14 8:44

PIEBALDconsult

24-Sep-14 8:44

That would be one of my questions as well.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.