Re: Disable Windows Navigation - C# Discussion Boards

BillWoodruff21-Jul-13 23:40

21-Jul-13 23:40

Hi Harold,

Upvoted, as usual: why is it that when I read your comments, I often feel like I am listening to Yoda trying to tell me something through metaphor that's just beyond my ability to grasp ? Smile | :)

yours, Bill

~
“This isn't right; this isn't even wrong." Wolfgang Pauli, commenting on a physics paper submitted for a journal

Re: Generic collections

PozzaVecia22-Jul-13 1:18

PozzaVecia

22-Jul-13 1:18

Re: Generic collections

M.Kamran Asim21-Jul-13 21:19

M.Kamran Asim

21-Jul-13 21:19

use Dictionary<string,double>

Disable Windows Navigation

aymen Tn18-Jul-13 5:11

aymen Tn

18-Jul-13 5:11

Hi

I'm developing a wpf application using visual studio 2010 in c#.
for security reason, the navigation in the operating system is not allowed while running the application.
That means once it is launched, all Windows menu, icons, toolbars ... must be hidden, and only the application must appear.
(it's a kind of that the PC becomes only dedicated to it).

Any suggestion or Idea ?

Thanks in advance

Re: Disable Windows Navigation

GuyThiebaut18-Jul-13 5:26

GuyThiebaut

18-Jul-13 5:26

I don't have any code but what I think you might want to look into is running the application in what is known as 'kiosk' mode.

“That which can be asserted without evidence, can be dismissed without evidence.”

― Christopher Hitchens

Re: Disable Windows Navigation

Emmanuel Medina18-Jul-13 5:27

Emmanuel Medina

18-Jul-13 5:27

Sounds like what you want is a "kiosk" mode kinda thing.

If so, you should add WindowStyle="None" and WindowState="Maximized" to the XAML of your main window. Further, you can even disable resizing and make it be the windows at the top from the start, adding ResizeMode="NoResize" and Topmost="True". Code would look like this:

XML

<Window x:Class="WpfApplicationTest1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525"
        WindowStyle="None"
        WindowState="Maximized"
        ResizeMode="NoResize"
        Topmost="True">

Note that Windows keyboard shortcuts still work (Alt+Tab, Windows Key, Alt+F4). If you want to "disable" those, you will have to capture them, although opening applications in this manner (for example Windows+E for Windows Explorer) won't display the newly opened application since yours is Topmost as set in the property.

[EDIT]
The same can be achieved modifying those properties in the constructor, like so:

namespace WpfApplicationTest1
{
  public partial class MainWindow : Window
  {
    public MainWindow()
    {
      InitializeComponent();
      WindowStyle = WindowStyle.None;
      WindowState = WindowState.Maximized;
      ResizeMode = ResizeMode.NoResize;
      Topmost = true;
    }
  }
}

If you think you can do a thing or think you can't do a thing, you're right - Henry Ford

Emmanuel Medina Lopez

modified 18-Jul-13 13:48pm.

Re: Disable Windows Navigation

aymen Tn18-Jul-13 22:44

aymen Tn

18-Jul-13 22:44

Hello

Thanks for your reply.
but with this solution the windows expolorer still work, for example when I push the keybord start button it still works,
What I want to do is to diable all windows fonctionnality (like Windows +E ....)

Thanks

Re: Disable Windows Navigation

Freak3018-Jul-13 23:46

Freak30

18-Jul-13 23:46

I don't think, you can do this. And even if you did, the user could still press Ctrl + Alt + Del (which can't be intercepted as far as I know), open Task Manager and kill your application.

I would suggest another appoach. Give the user only minimal rights (just to his user directory). Start your application under a different user who has access to the necessary directories. Require a password to close your application. Under this setup the Task Manager is of no use because the user can't kill other users' processes.

The good thing about pessimism is, that you are always either right or pleasently surprised.

modified 19-Jul-13 6:17am.

Re: Disable Windows Navigation

Eddy Vluggen19-Jul-13 0:26

Eddy Vluggen

19-Jul-13 0:26

aymen amri wrote:
but with this solution the windows expolorer still work, for example when I push the keybord start button it still works

The keyword was "Kiosk mode". DuckDuckGo it, and you'll come across checklists like this one[^].

Bastard Programmer from Hell Suspicious | :suss:

If you can't read my code, try converting it here[^]

How to save web page as MHTML?

Abdallah Al-Dalleh18-Jul-13 3:25

Abdallah Al-Dalleh

18-Jul-13 3:25

Hi all

If I have a web page URL string in C#, how to save the web page as MHTML extension?

Re: How to save web page as MHTML?

Emmanuel Medina18-Jul-13 4:00

Emmanuel Medina

18-Jul-13 4:00

First, the mandatory question since you don't mention it in your post:

What have you tried?
I remember I did something kind of like what you want about a year ago, since I didn't have a clue, I googled (don't remember the specific query), and one of the first links was a MSDN page with an example to it.

What I mean is: please show/tell us what you've done, and what is the specific problem that you have, so we know that you are indeed making an effort and not just wasting everyone's time.

Now, I'm not just gonna lecture you and give you nothing. Look for info on:

How to read/write files in C#
How to get the HTML contents of a web page

You'll need to get acquainted with the following namespaces/classes:
System.Net[^]
System.IO[^]
Filestream[^]
WebClient[^]

If you think you can do a thing or think you can't do a thing, you're right - Henry Ford

Emmanuel Medina Lopez

Re: How to save web page as MHTML?

Jay Nardev18-Jul-13 19:21

Jay Nardev

18-Jul-13 19:21

Simply get the content of page and create file with MHTML extension and save. Check below link

How to read full web page in C#[^]

http://stackoverflow.com/questions/4510212/how-i-can-get-web-pages-content-and-save-it-into-the-string-variable[^]

Dynamic Columns in Entity Framework

sengottuvel m18-Jul-13 2:28

sengottuvel m

18-Jul-13 2:28

Hi All,

I have created a stored procedure which returns dynamic columns, i need to map this to the EF to populate the data on a KendoUI Grid. How can i do it?

I need to create the entities based on the number of columns returned from the stored procedure, because my columns are always dynamic and change frequently, so i cannot create a fixed custom entity in EF.

if I have used Normal Ado.net it will return datatable format.In this we can't bind kendoui using Datatable.

Any help would be appreciated Please respond ASAP.

Re: Dynamic Columns in Entity Framework

Richard MacCutchan18-Jul-13 3:15

Richard MacCutchan

18-Jul-13 3:15

You already asked this at dynamic columns using Entity Framework[^]; please use one forum only.

Use the best guess

how to execute a wrapped oracle procedures using C#

M_MA18-Jul-13 0:36

M_MA

18-Jul-13 0:36

I Need to execute a procedures using C# Command
like this

                        string cmd = @"Create Or Replace Procedure Fix wrapped 
a000000
230
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
abcd
7
b5 db
D72BlwrV1gjrUSfLEEUQzh3CcxkwgzJfCsvhf46iLc3qX7ovyA5450Xt2d/eEhO83Ttm+5lG
yjOGJunKydtdR733WyVs09T4gOwU6QIvvFfp8+3D9WWHGKKnQF8AX3JfGH/C1tGABS8+oMDe
i/GE+pinMauuHrnwHUUBJhPUUAEOyLJ4PUJmKP+2lUY8eTpOwbHNkjDgbSz3sX3qD4jh0UQ="
                        command.CommandTimeout = 0;
                        command.CommandText = cmd;
                        command.ExecuteNonQuery();

this code done successfully but the result when execute the fix procedures on the pl\sql

ERROR at line 1:
ORA-06550: line 1, column 7:
PLS-00905: object AUDI.FIX is invalid
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored

Or show me message the procedures is corrupted

So there is any Idea

Using Axis Media Control SDK with EMGU CV to do a C# Winform application.

Ervin Loong17-Jul-13 23:10

Ervin Loong

17-Jul-13 23:10

I would like to do a image stitching program(which is like a panoramic image after capturing) that is able to capture and stitching at the same time, but I am using the example codings provided by EMGU CV and the codings are unable to stitch images vertically and also Axis Communication PTZ 214 Camera for the captured images.I will be using imagebox control and axis media control. Can somebody please help? Smile | :)

modified 18-Jul-13 5:28am.

Help Regarding OPEN XML,

meetnneel17-Jul-13 6:16

meetnneel

17-Jul-13 6:16

Hello All,

need to convert Word Document Content Like Mail Merge and Convert It in to OPEN XML, please, do the need full.

Thanks In Advance Smile | :)

Re: Help Regarding OPEN XML,

Dave Kreskowiak17-Jul-13 7:24

Dave Kreskowiak

17-Jul-13 7:24

If by "do the needful" you mean write your code for you, that's just not going to happen.

You haven't said anything at all about where you're stuck in this process, so it's pretty much impossible to tell you what's going on.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: Help Regarding OPEN XML,

BillWoodruff17-Jul-13 17:25

BillWoodruff

17-Jul-13 17:25

Dave, fyi, the expression "do the needful" is a Hindi-English idiom often used in correspondence; in this case it may not have the meaning of "gimme codez" ... or, it might Smile | :)

yours, Bill

“Human beings do not live in the objective world alone, nor alone in the world of social activity as ordinarily understood, but are very much at the mercy of the particular language which has become the medium of expression for their society. It is quite an illusion to imagine that one adjusts to reality essentially without the use of language and that language is merely an incidental means of solving specific problems of communication or reflection." Edward Sapir, 1929

Re: Help Regarding OPEN XML,

Dave Kreskowiak17-Jul-13 18:00

Dave Kreskowiak

17-Jul-13 18:00

I know where it's from and it can be traced back to about the 1700's in British English.

But, since the OP doesn't specify anything at all about what he's looking for, I just had to guess and us an "if" in preface to the most likely possibility.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: Help Regarding OPEN XML,

BillWoodruff17-Jul-13 18:11

BillWoodruff

17-Jul-13 18:11

Hi Dave,

I am delighted to know you are familiar with such constructions (the more common form, I believe, is "do the necessary") [^]. I'm not sure whether, technically, these (now archaic) forms qualify as calques, and/or Anglicisms.

Have you lived in India, or is there a family connection with the Raj ?

Hope my response to you did not seem patronizing Smile | :)

yours, Bill

Re: Help Regarding OPEN XML,

Dave Kreskowiak18-Jul-13 2:09

Dave Kreskowiak

18-Jul-13 2:09

BillWoodruff wrote:
Have you lived in India, or is there a family connection with the Raj ?

Oh God, no! I just went and did the homework to find out my it's so popular in India, and, to a lesser extent, South Asia English.

BillWoodruff wrote:
Hope my response to you did not seem patronizing

No, no. We're good! Laugh | :laugh:

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: Help Regarding OPEN XML,

BillWoodruff17-Jul-13 17:28

BillWoodruff

17-Jul-13 17:28

Hi Meetnneel,

Please describe what you have done so far, post the code you have written so far, and discuss what specific problems you are having with it.

yours, Bill

Using Binary Serialization and GZip ?

BillWoodruff17-Jul-13 3:14

BillWoodruff

17-Jul-13 3:14

I am successfully using .NET's BinaryFormatter to serialize a very complex object (an instance, at run-time) into a MemoryStream, and I can save that to a file, and then de-serialize the file back into an instance of the object.

Then, I wanted to add compressing the MemoryStream using GZip [1], before saving it to a file.

I am, without compile- or run- time error, using .NET's GZip facility to GZip the created MemoryStream, and then save it to a disk file.

To summarize the save-to-file sequence:

1. use BinaryFormatter to serialize the object to a MemoryStream

2. use GZip to compress the MemoryStream

3. write the Gzipped MemoryStream to disk

I've already learned the hard way that there is a quirk in using GZip in .NET in compressing [^].

I verify that the file is written, and it appears to have been "shrunk" by the GZip facility.

But, when I try to reverse the process, to essentially deserialize (recreate) the object by:

1. reading the Gzipped saved file into a MemoryStream

2. using GZip's Decompress on the MemoryStream

3. using BinaryFormatter to deserialize the MemoryStream, which I then cast into the Type of the original object: fail.

The point I am stuck at is expressed in this code:

// un GZip

// at this point 'newMemoryStream holds the result
// of opening the saved serialized/Gzipped file

using (GZipStream deCompressionStream = new GZipStream(new MemoryStream(), CompressionMode.Decompress))
{
   // here 'deCompressionStream is 'CanRead = 'true, CanWrite = 'false
   // Length property examined at break-point indicates some Exception
   // so you can't write anything into 'deCompressionStream
   // like this:
   // newMemoryStream.CopyTo(deCompressionStream);

   // yes, this will not fail, but doesn't make sense
   // it's inconsistent with the way that Gzipping compression works !
   deCompressionStream.CopyTo(newMemoryStream);
}

BinaryFormatter bFormatter = new BinaryFormatter();

// if you try this using the "doesn't make sense"
// attempt above:
// you'll get a 'stream was not readable' error

object obj = bFormatter.Deserialize(newMemoryStream);

Thanks in advance for any advice.

yours, Bill

[1] I set out to explore using GZip as a way to increase my general knowledge of .NET's stream facilities, and after learning how to successfully use Mehdi Gholam's fastBinaryJSON work here on CP, and using the MiniLZO class in Mehdi's Raptor Document Store.

Re: Using Binary Serialization and GZip ?

Richard Deeming17-Jul-13 4:02

Richard Deeming

17-Jul-13 4:02

You're passing an empty MemoryStream to the GZipStreams constructor. You need to pass the stream containing the previously compressed data instead.

using (var fileStream = File.OpenRead(@"Path\To\Your\File.bin"))
using (var deCompressionStream = new GZipStream(fileStream, CompressionMode.Decompress))
{
   var bFormatter = new BinaryFormatter();
   object obj = bFormatter.Deserialize(deCompressionStream);
}

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- Homer

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