Retrieving data from the last line in a text file - C# Discussion Boards

Re: help......................

Dave Kreskowiak2-Jan-09 19:51

Dave Kreskowiak

2-Jan-09 19:51

You can't.

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Re: help......................

#realJSOP2-Jan-09 23:58

#realJSOP

2-Jan-09 23:58

There's a utility that comes with Windows called "HideMyExe.exe".

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sound in c#

BESHOY MARKO2-Jan-09 10:50

BESHOY MARKO

2-Jan-09 10:50

Hi all,
i tried to play two sounds in the same time by using this code

System.Media.SoundPlayer sw = new System.Media.SoundPlayer("-------.wav");
     sw.PlayLooping();
     System.Media.SoundPlayer s = new System.Media.SoundPlayer("----------.wav");
     s.PlayLopping();

but the first sound stoped and the second was playing

can any body help me to play two sounds in the same time ?
thx 4 all

Re: sound in c#

Kristian Sixhøj2-Jan-09 10:53

Kristian Sixhøj

2-Jan-09 10:53

The SoundPlayer.Play method should do it.

Kristian Sixhoej

Re: sound in c#

BESHOY MARKO2-Jan-09 11:06

BESHOY MARKO

2-Jan-09 11:06

sorry ,
but it makes the second sound only play

Re: sound in c#

Kristian Sixhøj2-Jan-09 23:58

Kristian Sixhøj

2-Jan-09 23:58

It seems like SoundPlayer can't do this.
DirectX should be able to do the job, but I'm not sure, and I don't know anything about using DirectX and C# together.

Kristian Sixhoej

Re: sound in c#

CPallini3-Jan-09 2:58

CPallini

3-Jan-09 2:58

There are articles, here at CP about managed DirectX[^].

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Retrieving data from the last line in a text file

soulg772-Jan-09 7:35

soulg77

2-Jan-09 7:35

basically, what I'm trying to do is just acquire a piece of data from the last line in a text file.

Not sure if it's enough but, this is the code I'm using as a base to build from.

public double LastATMBalance()
{
    double lastatmbal;

    foreach (DailyBalance dailybal in dailybalance)
    {
        lastatmbal = Convert.ToDouble(dailybal.ToString());
    }
    return lastatmbal;
}

and this is the format of the text file i'm using.

3/27/2000,4800
3/29/2000,7750
3/30/2000,6990
3/31/2000,5000
4/6/2000,5000
11/12/2004,5000
6/9/2004,9990
2/20/2006,5000
4/1/2006,5000
4/9/2006,5000

not sure anymore info is needed.
Thanks for any assistance provided.

Re: Retrieving data from the last line in a text file

Luc Pattyn2-Jan-09 8:04

Luc Pattyn

2-Jan-09 8:04

Hi,

I don't see a question, so what is your problem?

remarks:
1. your code won't compile since lastatmbal is not guaranteed to get a value.
2. why convert all the DailyBalance objects when the only one of interest is the last one?

Smile | :)

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Re: Retrieving data from the last line in a text file

#realJSOP2-Jan-09 8:25

#realJSOP

2-Jan-09 8:25

what is dailybalance? Is it a generic list? An array?

If it's a generic list, you could use dailybalance.Last().

If it's an Array, you could use dailybalance[dailybalance.Length - 1]

passing a value from one method to another method without calling the method, infact no relation exists between two methods, just value is needed.

suni_dotnet2-Jan-09 6:15

suni_dotnet

2-Jan-09 6:15

Hi,
i have a senario, 3 buttons and 2 gridviews.The buttons(three buttons) related to the information in first Gridview is clicked, it populates the second gridview with the corresponding table in database. Now my_method needs to know which button is clicked, so that it uses stored procedure to do some database operations on that particular table.
Is there any way to get the value from button_clicked() to my_method, without calling my_method. The value will be used only when my_method() is called by some other operation.
Thanks

Re: passing a value from one method to another method without calling the method, infact no relation exists between two methods, just value is needed.

Colin Angus Mackay2-Jan-09 7:07

Colin Angus Mackay

2-Jan-09 7:07

You could store the information in a field on the class in which the method resides.

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my senario

suni_dotnet2-Jan-09 8:41

suni_dotnet

2-Jan-09 8:41

Hi,
class
{
protected void Button1_Click(object sender, EventArgs e)
{
resbutton = "abcMenu";
.....
}
protected void Button2_Click(object sender, EventArgs e)
{
resbutton = "defMenu";
.....
}
protected void Button3_Click(object sender, EventArgs e)
{
resbutton = "jklMenu";
.....
}
protected void Button4_Click(object sender, EventArgs e)
{
resbutton; // here i need the value of resbutton for different above button_click events
.....
}
}
fields are not working properly. can u provide me some related code.
Thanks

Re: my senario

Colin Angus Mackay2-Jan-09 12:42

Colin Angus Mackay

2-Jan-09 12:42

suni_dotnet wrote:
fields are not working properly.

I don't see any evidence from this code that you have a field at all.

Here is your code re-written:

class MyForm
{ 
  private string resbutton; // This is the field
 
  protected void Button1_Click(object sender, EventArgs e)
  {
    resbutton = "abcMenu";
    // .....
  }
 
  protected void Button2_Click(object sender, EventArgs e)
  {
    resbutton = "defMenu";
    // .....
  }
 
  protected void Button3_Click(object sender, EventArgs e)
  {
    resbutton = "jklMenu";
    // .....
  }
 
  protected void Button4_Click(object sender, EventArgs e)
  {
    switch(resbutton)
    {
      case "abcMenu":
        // Do stuff based on Button1 being pressed
        break;
      case "defMenu":
        // Do stuff based on Button2 being pressed
        break;
      case "jklMenu":
        // Do stuff based on Button3 being pressed
        break;
      default:
        // Do suff based on none of the buttons being pressed
        break;
    }
  }
}

Of course there may be better ways of doing this, but since we don't know what your actual overall goal is we can't say. Christian's suggestion of using delegates has merit also.

I'd also suggest using something other than a string for the field. Creating a specific enum that enumerates each type of button would be good.

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Re: passing a value from one method to another method without calling the method, infact no relation exists between two methods, just value is needed.

Christian Graus2-Jan-09 7:25

Christian Graus

2-Jan-09 7:25

sounds like you want to use a delegate.

Christian Graus

Driven to the arms of OSX by Vista.

Re: passing a value from one method to another method without calling the method, infact no relation exists between two methods, just value is needed.

#realJSOP2-Jan-09 7:33

#realJSOP

2-Jan-09 7:33

You're starting to sound like "Clippy".

a question about information retrieval system

farzaneh_10732-Jan-09 6:13

farzaneh_1073

2-Jan-09 6:13

i want to implement samll system that can retrieve information from some file, but i really don`t know how to do it? how to calculate Term frequency? how to indexing? i want to do it in C#.NET

Re: a question about information retrieval system

Christian Graus2-Jan-09 7:26

Christian Graus

2-Jan-09 7:26

Sounds like you need to hire someone, talk to your teacher, or tell your client they hired the wrong person,depending on your reason for wanting to do this.

Christian Graus

Driven to the arms of OSX by Vista.

The problem to make the marker size of Legend bigger with MS chart control

Seraph_summer2-Jan-09 4:34

Seraph_summer

2-Jan-09 4:34

Generally, the marker size of the legend should be changed automatically with changing the marker size of the corresponding series.
but I found that when the marker size of the series is increased to larger than some value, the maker in the legend does not change at all!
(it is changed only when the marker size is increased from very small value to some value, then it is not changed anymore!)

is this the bug of Chart Control? I found the maximum marker size in the legend is too small for me, I try to make it bigger, but I can not.
anyone can help me to clarify it?

comparisons between Zedgraph and MS chart control

Seraph_summer2-Jan-09 4:07

Seraph_summer

2-Jan-09 4:07

I compare the speed of plotting between Zedgraph and MS chart control,
I found MS chart control is much slower than Zedgraph. Anyone knows the reason? Or just because MS chart control
contains more functions which may need more time for initialization or because MS chart use differet implementation technique from the one Zedgraph?

Re: comparisons between Zedgraph and MS chart control

#realJSOP2-Jan-09 4:27

#realJSOP

2-Jan-09 4:27

How can we possibly answer your question unless we know how you came to this conclusion?

Re: comparisons between Zedgraph and MS chart control

Seraph_summer2-Jan-09 4:33

Seraph_summer

2-Jan-09 4:33

thanks for your reply.

I just plot the same line chart with Zedgraph and MS chart control (i.e., the same x and y list values), then the time taken by MS chart control is much longer than Zedgrah.

Re: comparisons between Zedgraph and MS chart control

#realJSOP2-Jan-09 4:42

#realJSOP

2-Jan-09 4:42

Are we talking minutes, seconds, days? You gotta provide more info.

Re: comparisons between Zedgraph and MS chart control

Christian Graus2-Jan-09 5:41

Christian Graus

2-Jan-09 5:41

Well, two things

1 - are you sure it's faster for ALL graphs, or just the type you're testing
2 - why do you care ? Just use the control that works best for you.

Christian Graus

Driven to the arms of OSX by Vista.

Re: comparisons between Zedgraph and MS chart control

Dave Kreskowiak2-Jan-09 6:13

Dave Kreskowiak

2-Jan-09 6:13

Your testing, or results, is very incomplete.

Besides, the MSChart control is older than dirt itself, wasn't designed with the .NET Framework in mind (interop overhead, and pre-dates even the idea of the .NET Framework). Then there's ZedGraph, which was designed entirely under .NET. Is it really such a surprise??

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Visual Developer - Visual Basic
2006, 2007, 2008

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