C# Discussion Boards - CodeProject

raushan_91-Feb-11 1:32

1-Feb-11 1:32

Hello,

In a Application i used Microsoft.office reffernce. Then .Docx file Converts in .PNG.

But Now i have need without installed Microsoft Office Converts the File .DOCX to .PNG. I am using DocumentFormat.OpenXml.dll, but i am unable to convert .docx to .PNG.

So please Suggest me How i can convert .docx to .PNG without having Microsoft Office

Regards
Raushan Kumar

Re: File Convert .DOCX to .png

JF20151-Feb-11 2:18

JF2015

1-Feb-11 2:18

Have you tried this converter:
http://www.verydoc.com/doc-to-any/docx-to-png.html[^]
I think it's commercial but it can be called by C#, so maybe you give it a try.

Re: File Convert .DOCX to .png

Eddy Vluggen1-Feb-11 6:57

Eddy Vluggen

1-Feb-11 6:57

raushan_9 wrote:
So please Suggest me How i can convert .docx to .PNG without having Microsoft Office

By reading articles on CodeProject, like Manipulate Docx with C# without Microsoft Word installed with OpenXML SDK[^] Smile | :)

I are Troll Suspicious | :suss:

Re: File Convert .DOCX to .png

raushan_91-Feb-11 8:02

raushan_9

1-Feb-11 8:02

Hello Eddy Vluggen,

Thanks a lot for your good reply.
but by using this article we can just manipulate .docx file,
I have need to convert in Image File like(PNG\JPEG), still i have not get any idea for convert .docx to .PNG.

I have done by using the Microsoft word reference, but i need to run without Microsoft word installed.

Process which i have done:-

open document in word application then just split page wise in document after that copyaspicture.
I have called user32.dll native API for clipboard manipulation and then transfer file in MetaFile using intptr and then save the file in(PNG\JPEG)

So please give some idea how can i copy picture in clipboard ya any otherway without office reference.

Thanks
Raushan Kumar

Re: File Convert .DOCX to .png

Eddy Vluggen1-Feb-11 20:27

Eddy Vluggen

1-Feb-11 20:27

raushan_9 wrote:
So please give some idea how can i copy picture in clipboard ya any otherway without office reference.

Convert it to Html[^], and render the Html as a picture Smile | :)

I are Troll Suspicious | :suss:

check if value is null

arkiboys1-Feb-11 1:01

arkiboys

1-Feb-11 1:01

How can I check if the value if null so that I do bnot get the error:
"object reference not set to an instance of an object" ?
This still gives the error:
if !((byte[])Message.GetField("FieldName", 0).Value == null
{

}

Thanks

Re: check if value is null

Bernhard Hiller1-Feb-11 1:09

Bernhard Hiller

1-Feb-11 1:09

Several variables could be null. By the way, what's the type of "Message"?
Try something like:

byte[] byteArray = null;
if (Message != null)
{
   Field myField = Message.GetField("FieldName", 0);
   if (Field != null)
   {
       object fieldValue = Field.Value;
       if (fieldValue != null)
       {
             byteArray = (byte[])fieldValue;
       }
   }
}

Re: check if value is null

arkiboys1-Feb-11 1:12

arkiboys

1-Feb-11 1:12

Hi,
This will not work because message is not empty...
It has several fields such as field1, field2, field3...
It fails when I check for if field3 is null
Any thoughts please?

Re: check if value is null

Dave Kreskowiak1-Feb-11 1:53

Dave Kreskowiak

1-Feb-11 1:53

You also never specified what type Field is or Value. If these are integer types (not Nullable integer), then they can never be null and the compile will fail.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak

Re: check if value is null

Richard MacCutchan1-Feb-11 1:10

Richard MacCutchan

1-Feb-11 1:10

You will need to break your statement down into smaller parts and test a each level, starting with Message, then the result of Message.GetField("FieldName", 0) and so on.

I must get a clever new signature for 2011.

Re: check if value is null

arkiboys1-Feb-11 1:28

arkiboys

1-Feb-11 1:28

I agree but when I do if Message.GetField("FieldName", 0) == null then it gives error.

Re: check if value is null

Pete O'Hanlon1-Feb-11 1:43

Pete O'Hanlon

1-Feb-11 1:43

That's not what he meant. He meant to check something like this:

var msg = Message;
if (msg == null)
{
  // It's null
}
var field = msg.GetField("FieldName", 0);
if (field == null)

{
  // It's null
}
var value = field.Value; 
// And so on...

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads

My blog | My articles | MoXAML PowerToys | Onyx

Re: check if value is null

arkiboys1-Feb-11 1:50

arkiboys

1-Feb-11 1:50

Ok, thank you

Re: check if value is null

Richard MacCutchan1-Feb-11 3:19

Richard MacCutchan

1-Feb-11 3:19

Bernhard already gave you the answer here[^].

I must get a clever new signature for 2011.

GetWindowText Funcation not working Fine iF Application Title is Unicode or Other Language.

Anubhava Dimri1-Feb-11 0:17

Anubhava Dimri

1-Feb-11 0:17

Hello everybody,

The GetWindowText Function is not working fine if my selected application title is

मेरी थकन or Something like that.

If you can think then I Can.

Re: GetWindowText Funcation not working Fine iF Application Title is Unicode or Other Language.

Pete O'Hanlon1-Feb-11 0:22

Pete O'Hanlon

1-Feb-11 0:22

How have you defined GetWindowText? What does your import look like?

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads

My blog | My articles | MoXAML PowerToys | Onyx

Re: GetWindowText Funcation not working Fine iF Application Title is Unicode or Other Language.

Anubhava Dimri1-Feb-11 0:46

Anubhava Dimri

1-Feb-11 0:46

Dear Sir,

Actually GetWindowText is a Native Api

Private Declare Function GetWindowText Lib "user32" Alias "GetWindowTextA" (ByVal hwnd As Integer, ByVal lpString As String, ByVal cch As Integer) As Integer

If you can think then I Can.

Re: GetWindowText Funcation not working Fine iF Application Title is Unicode or Other Language.

Richard MacCutchan1-Feb-11 1:08

Richard MacCutchan

1-Feb-11 1:08

You should be using the Unicode version GetWindowTextW().

I must get a clever new signature for 2011.

Re: GetWindowText Funcation not working Fine iF Application Title is Unicode or Other Language.

Anubhava Dimri1-Feb-11 19:17

Anubhava Dimri

1-Feb-11 19:17

Dear Sir,

Thanks for reply and Answer.

But i don't know how to use GetWindowTextW in C#.
Can u please describe me how to Use GetWindowTextW in the place of GetWindowText.

If you can think then I Can.

Re: GetWindowText Funcation not working Fine iF Application Title is Unicode or Other Language.

Richard MacCutchan1-Feb-11 22:04

Richard MacCutchan

1-Feb-11 22:04

eg_Anubhava wrote:
Can u please describe me how to Use GetWindowTextW in the place of GetWindowText.

They are exactly the same, except that GetWindowTextW() returns its data in Unicode, so it works for C#. See here[^] for the formal specification.

I must get a clever new signature for 2011.

Re: GetWindowText Funcation not working Fine iF Application Title is Unicode or Other Language.

Pete O'Hanlon1-Feb-11 1:26

Pete O'Hanlon

1-Feb-11 1:26

I know it is. I needed to see the function definition, which you for some reason have provided in VB. Specifically I wanted to see what your CharSet was set to.

I'm not a stalker, I just know things. Oh by the way, you're out of milk.

Forgive your enemies - it messes with their heads

My blog | My articles | MoXAML PowerToys | Onyx

Problem executing Comman-line command - Need to press Ctrl+C to stop it !

All Time Programming31-Jan-11 22:23

All Time Programming

31-Jan-11 22:23

Hello,

I want to execute a command line command from my C#. I have written code that works but am not as expected. The code is taken from "How to Execute a Command in C# ?" found on this site. and is :
<code>
public static int ExecuteCommand(string Command, int Timeout)
{
int ExitCode = -1;
ProcessStartInfo ProcessInfo;
Process Process;
try
{
ProcessInfo = new ProcessStartInfo("cmd.exe", "/C " + Command);
ProcessInfo.UseShellExecute = false;
ProcessInfo.RedirectStandardOutput = true;
//ProcessInfo.CreateNoWindow = false;
//ProcessInfo.UseShellExecute = false;
Process = Process.Start(ProcessInfo);

// Get the results
string result = Process.StandardOutput.ReadToEnd();
Console.WriteLine("Process Result = " + result);
Process.WaitForExit();
ExitCode = Process.ExitCode;
Console.WriteLine("%%%%%%%%%%% EXIT CODE = " + ExitCode);
Process.Close();
}
catch (Exception e) {
Console.WriteLine("Error Processing ExecuteCommand : " + e.Message);
}
finally {
//Process = null;
//ProcessInfo = null;
}
return ExitCode;
}
</code>

The code runs, but untill I don't press "Ctrl+C" on dos prompt I don't see any results. I also want to check a line form the console text. For eg: If I find "Connected" from the output I want to close the process and return. Then when the user asks for disconnecting want to execute another command to disconnect the running application.

Why does the above code doesn't retun untill I press "Ctrl+c" on the command window (I don't want to show the command window also, right now am just showing)? Whne I press Ctrl+C I see the text on Console (output window), but want to check the text and on findling "Connected" want ot return and/or close the process.

Can anyone point out where am I going wrong and how to solve the problem and work out with it.

Any help is highly appreciated. Need to solve this early have already spend 2-3 days trying to solve the problem.

Thanks

Thanks & Regards,

Re: Problem executing Comman-line command - Need to press Ctrl+C to stop it !

JF201531-Jan-11 22:56

JF2015

31-Jan-11 22:56

Please don't repost. You already asked the same question here:
http://www.codeproject.com/Questions/152461/Problem-executing-a-command-line-command-from-Csha.aspx[^]

Re: Problem executing Comman-line command - Need to press Ctrl+C to stop it !

All Time Programming31-Jan-11 23:02

All Time Programming

31-Jan-11 23:02

Yes Sorry. I found this after posting over there and didn't see the same post over here. So was wondering both are different and will that post be replied or not.

So had posted here also. But now want to close this, as am geting resposne from theri also.

Thanks & Regards,

Block Windows "Guest" account

marca29231-Jan-11 21:00

marca292

31-Jan-11 21:00

Hi,

I want to restrict users log on the computer from Windows "Guest" account from starting our application. Our application can be used on XP, Vista and Windows 7.
What is wrong with this solution, I get SecurityException when testing from Win7 guest account, I have tried both PrincipalPermission(null, "Guests"); and PrincipalPermission(null, "Guest");
I have also tried to use PrincipalPermission(null, "Administrators"); and then I can use the application from Admin account but not from guest account.

static void Main()
{
AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal);
PrincipalPermission principalGuest = new PrincipalPermission(null, "Guest"); //Has also tested with "Guests"

try
{
principalGuest.Demand();
}
catch (SecurityException e)
{
//I only want to get this exception if the user is Windows account type "guest"
}
}

Best regards
Olof

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