SpeechSynthesizer memory leak - C# Discussion Boards

Dr.Walt Fair, PE1-Mar-10 17:49

Dr.Walt Fair, PE

1-Mar-10 17:49

I'm not sure what you mean, unless you meant "wrap" instead of "warp"?

To wrap text saved in a text file, you just insert linefeeds and/or carriage returns. But what context are you talking about? Most text editors and controls will take care of that automatically.

CQ de W5ALT

Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software

jojoba20111-Mar-10 18:01

jojoba2011

1-Mar-10 18:01

Wrap.

How can i do that please give me simple code?

Re: StreamReader [modified]

Dr.Walt Fair, PE1-Mar-10 18:12

Dr.Walt Fair, PE

1-Mar-10 18:12

What have you tried so far?

CQ de W5ALT

Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software

jojoba20111-Mar-10 19:07

jojoba2011

1-Mar-10 19:07

Nothing
Just search in google but no use!

modified on Tuesday, March 2, 2010 1:45 AM

Dr.Walt Fair, PE2-Mar-10 4:46

Dr.Walt Fair, PE

2-Mar-10 4:46

Well, try something and if it doesn't work, then come back and explain what you tried. You really haven't given enough information to help you.

CQ de W5ALT

Walt Fair, Jr., P. E.
Comport Computing
Specializing in Technical Engineering Software

V.1-Mar-10 20:01

1-Mar-10 20:01

depends.
If you're writing in a textbox or richtextbox there's a property that will do that for you.
If you want to open a bunch of text in notepad eg and you want it wrapped you can insert cairrage returns/ line feeds.
You'll have to insert those at a certain amount of characters (80 or 120 would be good)

So in pseudocode it would be like this.

//Environment.NewLine exists in C# and will insert a crlf.
chunckof_X_chars1 + Environment.NewLine + chunckof_Xchars2 + Environment.NewLine + etc...

(You should put that in a loop or something)

To be absolutely correct you should insert your crlf after the last space in the string of X chars in order to keep the words together.

This should get you going.

SpeechSynthesizer memory leak

carlecomm2-Mar-10 17:57

carlecomm

2-Mar-10 17:57

You can refer to the following code,it can help you.

WebRequest req = null;
WebResponse rsp = null;
try
{
string fileName = "C:\test.xml";
string uri = "http://localhost/PostXml/Default.aspx";
req = WebRequest.Create(uri);
//req.Proxy = WebProxy.GetDefaultProxy(); // Enable if using proxy
req.Method = "POST"; // Post method
req.ContentType = "text/xml"; // content type
// Wrap the request stream with a text-based writer
StreamWriter writer = new StreamWriter(req.GetRequestStream());
// Write the xml text into the stream
writer.WriteLine(this.GetTextFromXMLFile(fileName));
writer.Close();
// Send the data to the webserver
rsp = req.GetResponse();

}
catch(WebException webEx)
{

}
catch(Exception ex)
{

}
finally
{
if(req != null) req.GetRequestStream().Close();
if(rsp != null) rsp.GetResponseStream().Close();
}Function to read xml data from local system
///

/// Read xml data from file
///

/// <param name="file" />
/// <returns>returns file content in xml string format
private string GetTextFromXMLFile(string file)
{
StreamReader reader = new StreamReader(file);
string ret = reader.ReadToEnd();
reader.Close();
return ret;
}

modified 27-May-14 4:54am.

FocusedWolf1-Mar-10 16:16

FocusedWolf

1-Mar-10 16:16

Was wondering if anyone knows of a workaround for the annoying memory leak in SpeechSynthesizer.

Dave Kreskowiak1-Mar-10 19:10

Dave Kreskowiak

1-Mar-10 19:10

Don't use it?

Seriously, you're going to have to provide a link to the problem you're talking about, and there's more than one SpeechSynthesizer running around...

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

FocusedWolf2-Mar-10 1:46

FocusedWolf

2-Mar-10 1:46

Sorry i thought everyone knew about this Smile | :)

Here's from some other people that have experienced it:

http://stackoverflow.com/questions/2204012/constant-memory-leak-in-speechsynthesizer[^]

Little translation action for this one:

http://translate.googleusercontent.com/translate_c?hl=en&sl=de&u=http://www.eggheadcafe.com/software/aspnet/34136900/memoryleak-in-speechsynth.aspx&prev=/search%3Fq%3Dspeechsynthesizer%2Bmemory%2Bleak%26hl%3Den&rurl=translate.google.com&twu=1&usg=ALkJrhhmXs1dqrvH8fgXvkgr_s4qn1wQkA[^]

To summarize the effect, the more words that the SpeechSynthesizer .net framework object has to read, the more megabytes of memory it consumes. It's not long before it's soaking up a few hundred mb. First effect, which sets on rather quickly, is the reader gets slower and slower.

I have tried various hacky attempts to dispose and create new objects, but it wasn't 100% successful (besides introduces a noticeable delay). This is from the first link:

what happens if you don't create a new SpeechSynthesizer object on each pass? – Eric Brown Feb 19 at 20:50

Eric, I tried it that way the first time through and it is actually worse. This was why I tried creating and destroying the object with each call. It did improve slightly, but still doesn't solve the issue. Any call to SpeechSynthesizer leaves behind WAVEHDR and WaveHeader objects that grows the private memory until it crashes. – DudeFX Feb 19 at 23:34

Dave Kreskowiak2-Mar-10 13:04

Dave Kreskowiak

2-Mar-10 13:04

FocusedWolf wrote:
Sorry i thought everyone knew about this

I do. But since Microsoft isn't the only vendor for speech synthesis software, I like to make sure which library we're talking about.

FocusedWolf wrote:
To summarize the effect, the more words that the SpeechSynthesizer .net framework object has to read, the more megabytes of memory it consumes. It's not long before it's soaking up a few hundred mb. First effect, which sets on rather quickly, is the reader gets slower and slower.

I have tried various hacky attempts to dispose and create new objects, but it wasn't 100% successful (besides introduces a noticeable delay). This is from the first link:

I didn't use the code you linked to, but I wrote my own app and couldn't come up with a memory leak. I'm assuming the code you linked to is yours. It's written kind of funny. I'd skip destroying and creating a new synth every time you want to say something and go back to creating a single synth object you can use at any time. I'm not seeing the problem you're talking about in my code and can't find any reference to any kind of memory leak anywhere on the web.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

FocusedWolf3-Mar-10 18:12

FocusedWolf

3-Mar-10 18:12

No i didn't write that code... it's just a random google result from searching for other people experiencing this problem.

Anyway recently i changed the code to just use the class the way people would expect to use it (i.e. no hacky tricks to fight the memory leak) and the memory consumption was about 400 kb/s.

Some things you can try to see the effect is give the reader a few pages of words to read, and set the Rate property to some number like 7 or 10. Subscribing to these events may also be a factor (SpeakCompleted and SpeakProgress).

I've noticed that if i just let the program go then it will get to the point of holding about 40-50 mb of ram where it almost stops allocating, and a few minutes later it will get a few more mb. So i'm wondering if this is a true memory leak or by design (i.e. if it has to read a lot then it allocates all this memory). However one thing i notice is when it finished reading, it doesn't flush the memory because the program is still holding onto 46 mb.

Dave Kreskowiak4-Mar-10 1:33

Dave Kreskowiak

4-Mar-10 1:33

If you're looking at this "used" in TaskManager, don't. Use Performance Monitor instead.

Task Manager is howing you what the .NET CLR has reserved for your app, not what your app is actually using.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...

Scroll synchronization of two RichTextBox controls

DudeFX55714-Mar-10 18:42

DudeFX557

14-Mar-10 18:42

I am actually the one who wrote the code linked to on StackOverflow. If you read the notes on this post you will see that i originally wrote the code so that it only used one instance of the SpeechSynthesizer object.

This memory leak is very much a problem with the Speak or SpeakAsync method making the System.Speech object unusable in ANY project. If you run the code you will see it will QUICKLY cause Windows 7.0 (couple hours) to crash, and will cause Vista to crash after about 20 hours.

I have both versions of the code linked here in a forum post on the MSDN site.

http://social.msdn.microsoft.com/Forums/en-US/Offtopic/thread/ee7bd34f-20c2-4a75-9d5a-a0c5e7f1a9b2[^]

hain1-Mar-10 13:34

hain

1-Mar-10 13:34

In a forms-based application, I would like to synchronize two RichTextBox controls so that one without a vertical scroll bar will scroll in synch with the other one (which has a vertical scroll bar). I.e., I want to be able to scroll both controls with one scroll bar.

Thanks for any suggestions,
Tom

P.S. I saw Karin Huber's article, but this is for WPF and Silverlight.

Re: Scroll synchronization of two RichTextBox controls

April Fans1-Mar-10 15:48

April Fans

1-Mar-10 15:48

You can build a user control (or custom control), and handle the scroll event in another RichTextBox.

April

Comm100 - Leading Live Chat Software Provider

modified 27-May-14 8:48am.

Re: Scroll synchronization of two RichTextBox controls

AspDotNetDev1-Mar-10 15:59

AspDotNetDev

1-Mar-10 15:59

"Scrolling Around with the RichTextBox Control" discusses how to do that in VB, and there is a C# translation in a message at the bottom of the article.

[Forum Guidelines]

if statement?

Iman Mohtashemi1-Mar-10 9:36

Iman Mohtashemi

1-Mar-10 9:36

Hello,

How do I bin and zero fill excel data in both C# and excel? For example below is a list of data. I want to bin the data as integers

120.337

121.041

124.111

So the above should be. I want to say 0 of the date is not between a certain range as shown below

120-121= 120.337

121-122 =121.041

122-123 = 0

123-124 = 0

124-125 =124.111

Re: if statement?

DaveyM691-Mar-10 11:25

DaveyM69

1-Mar-10 11:25

Not sure what you mean but maybe something like this?

float RangeCheck(int lower, int upper, float value)
{
    return ((value >= lower) && (value <= upper)) ? value : 0;
}

Dave

Tip: Passing values between objects using events (C#)

BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Why are you using VB6? Do you hate yourself? (Christian Graus)

is it possible to do this?

tonyonlinux1-Mar-10 9:13

tonyonlinux

1-Mar-10 9:13

to make mass data entry easier so i can put my add form over the top of my excel sheet that contains the data i wish to enter. Is there a way to do the following without it minimizing both.
I understand the whole parent/child relationship of the forms but i was wondering if i could somehow do this because I have noticed programs like yahoo and so forth allow one form to be minimized while the other is maximized. Anyway here is what I'm trying...

private void Add_Button_Click(object sender, EventArgs e)
       {
           AddRecord addRecordForm = new AddRecord();
           addRecordForm.Owner = this;
           this.WindowState = FormWindowState.Minimized; //minimize the main form
           addRecordForm.ShowDialog(this); // load up the add form

           this.WindowState = FormWindowState.Normal; //when the add form closes return main form to normal size
           LoadData();
       }

it minimizes but they both minimize instead of only the parent minimizing. i even tried putting in the constructor of the addrecord this.windowstate = formwindowstate.normal; and that had no effect.

Saksida Bojan1-Mar-10 9:49

Saksida Bojan

1-Mar-10 9:49

I have tried compile example into .NET 2.0/3.0/3.5. I am using Windows 7 and didn't encounter your problem.
Did you accedently changed windowstato of your AddRecord Form?

Luc Pattyn1-Mar-10 9:54

Luc Pattyn

1-Mar-10 9:54

tonyonlinux wrote:
addRecordForm.Owner = this;
this.WindowState = FormWindowState.Minimized;

tonyonlinux wrote:
it minimizes but they both minimize instead of only the parent minimizing

Does it really? Have you read the documentation[^]. Which is what you always should do when running into a problem.

Hmmm | :|

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

I only read code that is properly formatted, adding PRE tags is the easiest way to obtain that.
All Toronto weekends should be extremely wet until we get it automated in regular forums, not just QA.

Dan Mos1-Mar-10 12:32

Dan Mos

1-Mar-10 12:32

here's a working example:

In the Main form/container, on the add click do something like this:

this.WindowState = FormWindowState.Minimized;
this.ShowInTaskbar = false;

Form2 f = new Form2();
f.Owner = this;
f.Show();

//this.WindowState = FormWindowState.Maximized;

and on the LoadDataForm on the form closing event do something like this:

private void Form2_FormClosing(object sender, FormClosingEventArgs e)
        {            
            this.Owner.ShowInTaskbar = true;
            this.Owner.WindowState = FormWindowState.Normal;            
        }

tonyonlinux1-Mar-10 13:36

tonyonlinux

1-Mar-10 13:36

thanks that worked.