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The ability to resume after abrupt termination is also quite sought-after though
But ok, that simplifies things. All you have to do is save enough of the state of the compressor so that you can load it again - basically, dump the data structures it's using in a file (or wherever you want to leave it). While the compression libraries I know up don't immediately support that, it should be possible to modify them (the ones that come with source, anyway) so that they do.
What you'd actually have to save depends on the compressor, but it might include:
- the index you were at (for input and output)
- the current block type (stored, dynamic tree, static tree), not all of the following will exist for stored blocks
- a chained hash table, used to find back-references (saving is optional, skipping it means worse compression ratio's if you pause/resume)
- a small buffer used to write bits to an underlying system that deals in bytes. May contain more than 7 bits, depends on the implementation
- a table of symbol lengths and symbol patterns, something like 286 entries or so. Doesn't necessarily exist all the time (for example at the start of a block when the compressor doesn't know enough about the symbol frequencies yet)
- misc stuff, and things I've forgotten to mention. And anyway, this covers just the Deflate end of the business, for full ZIP there's more to worry about.
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Theoretically, the naive solution would be to use a library that supports adding to an existing zip. You can do this[^] with SharpZipLib[^].
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REDSERPENT7 wrote: EDIT:
Just to be clear what I meant by pausing is that the application is terminated and once it is restarted it continues the compression operation from where it left off or from the last successfully compressed index.
Imagine you closing your app, and one of the libraries deciding to run on it's own after the PC restarts.
..so, no go. When you write a byte to your stream, increase a counter, write that counter to a file. When restarting, fast-forward the stream to the last known position.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
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i want to remove specific row from datatable means every row has a remove button.. through click i want to remove that row.. Datatable record is yet not saved to database.....??
plz help........?
modified 2-Apr-14 4:04am.
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I think he's looking for some help on one of them weird ASP.NET grids; not the datatable itself.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
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I agree, but like so many people here these days, he/she does not seem to know what control he is actually using to start with.
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i want to shutdown a computer on Lan using C#
plzzzz help me...
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shutdown /s /m \\computername That's the commandline for doing so; if you need to do it from C#, call it via System.Diagnostics.Process.Start().
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But in window form, button Shutdown, Reboot in server are not shutdown,reboot client.
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What are you talking about?? The shutdown command line works the same whether the target it a server or a workstation.
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Hi Friends,
I am in situation to develop a custom plugin that communicate to the windows application from web application. Also, that developed plugin need to install automatically, when I view the web application.
I have implemented the desktop application to communicate the dictaphone device. Also, I have implemented the web application in MVC4.
I want to communicate some data from web application to desktop application. Whenever a button pressed in web application, some data needs to pass to the desktop application.
I have tried to do the same by using the database and it works fine but it slows the performance.
Could you please let me know if you have any thoughts or solutions to achieve this?
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Here is what i did so far. The problem is if a conjunction appears twice in the sentence the code doesnt work for the 2nd appearance of the conjunction. plz if any expert can help ?
private void SplitSentence_Click(object sender, EventArgs e)
{
richTextBox2.Text = "";
richTextBox3.Text = "";
string[] keywords = { " or ", " and ", " hence", "so that", "however", " because" };
string[] sentences = SentenceTokenizer(richTextBox1.Text);
string remSentence;
foreach (string sentence in sentences)
{
remSentence = sentence;
richTextBox3.Text = remSentence;
for (int i =0; i < keywords.Length; i++)
{
if ((remSentence.Contains(keywords[i])))// || (remSentence.IndexOf(keywords[i]) > 0))
{
richTextBox2.Text += remSentence.Substring(0, remSentence.IndexOf(keywords[i])) + '\n' + keywords[i] + '\n';
remSentence = remSentence.Substring(remSentence.IndexOf(keywords[i]) + keywords[i].Length);
}
}
richTextBox2.Text += remSentence;
}
}
public static string[] SentenceTokenizer(string text)
{
char[] sentdelimiters = new char[] { '.', '?', '۔', '؟', '\r', ':', '-' }; // '{ ',' }', '( ', ' )', ' [', ']', '>', '<','-', '_', '= ', '+','|', '\\', ':', ';', ' ', '\'', ',', '.', '/', '?', '~', '!','@', '#', '$', '%', '^', '&', '*', ' ', '\r', '\n', '\t'};
// text.Remove('\n');
return text.Split(sentdelimiters, StringSplitOptions.RemoveEmptyEntries);
}
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here is what i did using regex. it works well. But doing this way, Splitting with regex, i lost the control over the word "and" for further processing. I have a lexicon of 20 words that normally appears before the "and (اور)" in urdu language. In next step I want to have a way to check the word before "and" against the lexicon and if found the sentence is broken else display the complete sentence.
private void button1_Click(object sender, EventArgs e)
{
{
richTextBox2.Text = "";
richTextBox3.Text = "";
string[] sentences = SentenceTokenizer(richTextBox1.Text);
string remSentence;
// these are urdu conjunctions. i am actually working on urdu language.
Regex r = new Regex("(کہ |اور | تاکہ| مگر | تاہم | کیونکہ | لیکن )");
foreach (string sentence in sentences)
{
remSentence = sentence;
remSentence = r.Replace(remSentence, "|");
string[] phrases = remSentence.Split('|');
for (int i = 0; i < phrases.Length; i++)
{
richTextBox2.Text += phrases[i] + '\n';
}
}
}
}
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if ((remSentence.Contains(keywords[i])))That's the position your trouble starts: you execute it once only regardless of the number of occurrences. You'll better use a function to split the sentence, and apply that function recursively on the resulting sub-sentences.
And yes: Regular Expressions are preferred.
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here is what i did using regex. it works well. But doing this way, Splitting with regex, i lost the control over the word "and" for further processing. I have a lexicon of 20 words that normally appears before the "and (اور)" in urdu language. In next step I want to have a way to check the word before "and" against the lexicon and if found the sentence is broken else display the complete sentence.
private void button1_Click(object sender, EventArgs e)
{
{
richTextBox2.Text = "";
richTextBox3.Text = "";
string[] sentences = SentenceTokenizer(richTextBox1.Text);
string remSentence;
// these are urdu conjunctions. i am actually working on urdu language.
Regex r = new Regex("(کہ |اور | تاکہ| مگر | تاہم | کیونکہ | لیکن )");
foreach (string sentence in sentences)
{
remSentence = sentence;
remSentence = r.Replace(remSentence, "|");
string[] phrases = remSentence.Split('|');
for (int i = 0; i < phrases.Length; i++)
{
richTextBox2.Text += phrases[i] + '\n';
}
}
}
}
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would you plz share some coded modification?
-- modified 2-Apr-14 5:26am.
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I am not Bernhard Hiller.
All the label says is that this stuff contains chemicals "... known to the State of California to cause cancer in rats and low-income test subjects."
Roger Wright
http://www.codeproject.com/lounge.asp?select=965687&exp=5&fr=1#xx965687xx
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Something like the below will loop for each keyword until there are no more matches left for that keyword - but it wont be perfect because it will skip over other keywords while it's looking
e.g "if you had this and that or the other and something"
you'd strip out all the Ands before stripping out the Or
What you need to do is
Repeat
Find the first occurrence of ANY of the keywords in your sentence.
Split the sentence
Until no occurrences found
Using the IndexOf method you can loop through your keywords, finding the lowest, non zero value of IndexOf and storing that word.
When the loop finishes , split the sentence using that word.
bool finished = false;
while (not finished)
if ((remSentence.Contains(keywords[i])))
{
richTextBox2.Text += remSentence.Substring(0, remSentence.IndexOf(keywords[i])) + '\n' + keywords[i] + '\n';
remSentence = remSentence.Substring(remSentence.IndexOf(keywords[i]) + keywords[i].Length);
}
else
{
finished = true;
}
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Private objTestStr As String
Public Property Get TestStr() As String
Set TestStr = objTestStr
End Property
how will the code looks like in c#?
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In C# you can create a Property in multiple ways :
Full blown Property :
private string testString;
public string TestString
{
get
{
return testString;
}
set
{
testString = value;
}
}
Or you can use Auto Implemented Properties:
public string TestString { get; set; };
For a good explanation of C# properties see the MSDN page here[^]
Everyone dies - but not everyone lives
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does the vb code above includes both the Get and Set? or its just a readonly Property where is should only include Get?
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Your code shows a read-only property.
private string objTestStr;
public string TestStr
{
get { return objTestStr; }
}
Well, naming conventions differ a little, _TestString would be preferred instead of objTestStr.
You could also use:
public string TestStr { get; private set; }
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i am very new to c# and i want to write a program to manage a small inventory,i will like to know how i can connect to microsoft access database and using oledbAdapter and write code to save,delete and Update my datasource.pls
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