C# Discussion Boards - CodeProject

6-May-03 8:24

.S.Rod. wrote:
long nLength = new System.IO.FileInfo(@"c:\test.txt").Length;

This is thing works file.Length;

Is it OK?

.S.Rod. wrote:
About char*, it's somewhat harder to answer.

Wow...

In my case...Usually I do like this C++
Ex: (separator is LPCTSTR )

char*  Sep = NULL;<br />
int    sepLength = 0;<br />
if (sepLength = strlen (separator)) <br />
{<br />
      Sep = new char [sepLength + 1];<br />
      strcpy (Sep, separator);<br />
      Sep[sepLength] = '\0';<br />
}

Thx Rodrigez for clarfying my newbie doubts.

Don't Beer | [beer]

and drive.

Re: Related to Files

Stephane Rodriguez.6-May-03 8:56

6-May-03 8:56

Kant wrote:
This is thing works file.Length;

fileinfo.Length, to be accurate.

Kant wrote:
In my case...Usually I do like this C++
Ex: (separator is LPCTSTR )
char* Sep = NULL;
int sepLength = 0;
if (sepLength = strlen (separator))
{
Sep = new char [sepLength + 1];
strcpy (Sep, separator);
Sep[sepLength] = '\0';
}

I believe that's what you do with C, not with C++. Wink | ;)

At least with C++ you can use the STL std::string, MFC CString, or whatever string class having a copy operator.

In managed code, everything is already done :
String s = separator; //

Re: Related to Files

Daniel Turini6-May-03 8:21

Daniel Turini

6-May-03 8:21

you can check if a file exists with System.IO.File.Exists(filename)

My latest article: GBVB - Converting VB.NET code to C#

Split the file

Kant6-May-03 4:49

6-May-03 4:49

The file contents are like this:

ABC DFDFAS
- (separator)
DSFS FSDFSDJFSD DSFKDFJS
-
DSFS FSDFSDJFSD DSFKDFJS fsdfsdfasd

I want those strings to be separated by that separator to be stored in array(double linked list) like this:

ABC DFDFAS
DSFS FSDFSDJFSD DSFKDFJS
DSFS FSDFSDJFSD DSFKDFJS fsdfsdfasd

I can write it easily in VC++, but I am getting what I want with C#

string testString;<br />
string[] strArray;<br />
Int64 stringLen;<br />
				<br />
stringLen = 0;  <br />
<br />
FileStream file = new FileStream(filePath, FileMode.Open, <br />
				FileAccess.Read);<br />
<br />
StreamReader sr;<br />
 <br />
try<br />
{<br />
   // Create a new stream to read from a file<br />
   sr = new StreamReader(file);<br />
}<br />
catch(Exception ex)<br />
{<br />
  // show error ...<br />
  return;<br />
}<br />
				<br />
do <br />
{<br />
     testString = sr.ReadLine() + "\r\n";<br />
     strArray = testString.Split('-'); <br />
     stringLen = quote.Length;<br />
<br />
     for (int i = 0; i < quoteLen; i++) <br />
     {<br />
<br />
	if (strArray[i] != "") // Empty string<br />
	{	<br />
<br />
           if (!wordCounter.Contains(strArray[i])) <br />
	       {<br />
		<br />
		wordCounter.Add(strArray[i], 1);<br />
	       } <br />
		else <br />
		{<br />
                  // Repeat word???<br />
                }<br />
	}<br />
<br />
     }<br />
   }<br />
   while(sr.Peek() != -1);<br />
<br />
   sr.Close();<br />
<br />
   file.Close();

All I get is :
ABC
DFDFAS
DSFS
FSDFSDJFSD
....

Can you guide what I am doing wrong..

Don't Beer | [beer]

and drive.

Stephane Rodriguez.6-May-03 5:49

6-May-03 5:49

The problem lies in something that is not defined in this code : what is the class type for wordCounter ?

Is wordCounter a class which implements the IDictionary interface ? In this case, I think the "1" in
wordCounter.Add(strArray[i], 1); is wrong. A unique value is expected.

Kant6-May-03 6:12

6-May-03 6:12

.S.Rod. wrote:
what is the class type for wordCounter ?

SortedList wordCounter = new SortedList();

Ignore my code, I started with one thing and ended up doing something else.

If the file contents is like this:

The Code Project Rocks
-
Yes It does.
-
It's Awesome.

I want all those sentences stored in the SortedList.

What's the easiest way?

Don't Beer | [beer]

and drive.

Stephane Rodriguez.6-May-03 6:40

6-May-03 6:40

SortedList sL = new SortedList();

sL.Add( "The Code Project Rocks", 0);
sL.Add( "Yes It does.", 0);
sL.Add( "It's Awesome", 0);

int i=0;
while ( i < sL.Count )
{
MessageBox.Show( sL.GetKey(i).ToString() );
i++;
}

Kant6-May-03 6:54

6-May-03 6:54

But before I add those string to SortedList, how to strip to those strings which are separated by the separator ("-") from the file?

Is testString.Split('-') any good?

Don't Beer | [beer]

and drive.

Stephane Rodriguez.6-May-03 6:59

how to write C# Applet, display it in a web page and the requirement?

6-May-03 6:59

Kant wrote:
Is testString.Split('-') any good?

Yes. That's the simplest way to do so as long as there are no carriage returns between strings and separators. In which case, I would suggest to concatenate strings as you read the file (use StringBuilder, for performance reasons, since strings are immutable), and then call Split on the full string.

zoltix6-May-03 2:36

zoltix

6-May-03 2:36

how to write C# Applet, display it in a web page and the requirement?

Thank in advance for your help.

where ?documentation and tuto

-=zoltx=-

Re: how to write C# Applet, display it in a web page and the requirement?

Stephane Rodriguez.6-May-03 6:45

Re: how to write C# Applet, display it in a web page and the requirement?

6-May-03 6:45

Basically, it's possible to run a .NET assembly into a IE6-hosted web page by adding these tags :

<object id="myCtl" 
         classid="http://www.mycode.Microsoft.com/mycode.dll#myClass">
</object>

where mycode.dll is the assembly filename, and myClass is the entry point.

Use http://127.0.0.1/... for local assemblies (you've got to put the assembly in your \wwwroot folder, if you are using IIS).

More info here[^].

Anonymous6-May-03 11:49

Anonymous

6-May-03 11:49

thanks a lot. I want to know if it is possible to pass some parameters ex:

<object id="myCtl" classid="http://www.mycode.Microsoft.com/mycode.dll#myClass" param="2131" param2="qsdf">

Re: how to write C# Applet, display it in a web page and the requirement?

zoltix6-May-03 11:51

zoltix

6-May-03 11:51

thanks a lot. I want to know if it is possible to pass some parameters ex:

<object id="myCtl" classid="http://www.mycode.Microsoft.com/mycode.dll#myClass" param="2131" param2="qsdf">

-=zoltx=-

Re: how to write C# Applet, display it in a web page and the requirement?

Paresh Gheewala6-May-03 6:52

Paresh Gheewala

6-May-03 6:52

check this link which has sample,
http://www.codeguru.com/forum/showthread.php?s=&threadid=228806&highlight=C+applet

or search Codeguru , forums in C# section only with keyword "C# applets"

-Paresh

mappoint 2002 com add-in

Niko Tanghe6-May-03 2:29

Niko Tanghe

6-May-03 2:29

Does anyone has already created a com add-in for mappoint 2002 in C#?

If so, can you provide me some sample code?
I didn't found any usefull C# samples on the net (yet).

Thanks in advance.

Re: mappoint 2002 com add-in

Stephane Rodriguez.6-May-03 6:53

Re: mappoint 2002 com add-in

6-May-03 6:53

Mappoint 2002 COM add-ins[^] are special COM components that must implement the IDTExtensibility2 interface.

In fact, once your C# code is ready (it must implements the mentioned interface), you just need to use regasm.exe to export it as an unmanaged component. Doing so, it creates a type-library and a progid you can use from MapPoint VisualBasic code.

My guess is that MapPoint 2003 will directly support C# objects.

Niko Tanghe6-May-03 23:13

Niko Tanghe

6-May-03 23:13

thanks, helped me a lot

KEYEVEN

maitre cesar6-May-03 0:01

maitre cesar

6-May-03 0:01

Hi
I want to use the Keyeven but It dont fonction.
can anyone help me please.
also i used the button caption, but it dont fonction when i do a evenement .

thanks
void textBoxText_KeyUp(object sender, System.Windows.Forms.KeyEventArgs e)
{
if(e.KeyCode == Keys.ControlKey)
{
this.textBox.Text = "salut";
);
}
else this.textBox.Text = "salut";
if(e.KeyCode == Keys.Delete) this.textBox.Text = "salut";
this.textBox.Text = "con";
}

Re: KEYEVEN

Stephane Rodriguez.6-May-03 0:32

How to creat a free IHTMLDocument interface?

6-May-03 0:32

Conditions like e.KeyCode == Keys.ControlKey are valid, and they work. The code snippet you have posted is utter crap (does not even compile), but may be it wasn't on purpose.

user-defined controls

simwiz5-May-03 22:36

simwiz

5-May-03 22:36

Hi!
I have create my own control in C#. When I try to use it on my WIndows Form I get an HRESULT exception and the control is never created. Anyone knows how can I debbug this in order to detect the error???

Thanks in advance!

benzite5-May-03 21:32

benzite

5-May-03 21:32

Hello,I'm trying to write a class library which can parse several WebPages automatically by mshml. But I'don't know
how to get a free IHTMLDocument2 interface which is not attatched to any control or view.

Using C++,this can be done by call to CoCreateInstance() function:
MSHTML::IHTMLDocument2Ptr pDoc;
HRESULT hr = CoCreateInstance(CLSID_HTMLDocument, NULL, CLSCTX_INPROC_SERVER,IID_IHTMLDocument2, (void**)&pDoc);

I want to know how to get a free IHTMLDocument2 interface in csharp.

hope I get some replies,
thanks

Re: How to creat a free IHTMLDocument interface?

Stephane Rodriguez.5-May-03 22:47