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Memory leak with a memory stream

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-1

I know this code is far from perfect but in my case this was the only
way to do it correctly because im embedding WPF in C#, and when
applying text regulary the Spellcheck does not work correctly

So this is my code:

RichTextBox temphotfix = new RichTextBox();
temphotfix.Font = new Font(temphotfix.Font.Name, 14);
System.Windows.Documents.TextRange range = new System.Windows.Documents.TextRange(omschrijving.Document.ContentStart, omschrijving.Document.ContentEnd);
temphotfix.Text = oms;
string temp = temphotfix.Rtf;
byte[] byteArray = Encoding.ASCII.GetBytes(temp);
MemoryStream stream = new MemoryStream(byteArray);
range.Load(stream, DataFormats.Rtf);
range = null;
temp = null;
byteArray = null;
temphotfix.Dispose();
stream.Dispose();

I stress tested this, and it seems like ever about 5 times the script gets ran, it adds about 1 MB ram.

What am i doing wrong, i litterly made everyting i used null, or desposed them.

c#

share|improve this question

edited Mar 22 at 5:35

Uwe Keim

27.7k32134216

asked Mar 22 at 1:54

Mika SDMika SD

12

• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  
  Garbage Collection isn't going to happen when you set things to null or call Dispose. It runs when it deems the memory pressure requires it.
  
  – juharr
  Mar 22 at 2:18
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  The good news is that with 4GB free RAM, you can afford run this about 20,000 times before running out of memory. So see what happens when you run it 1,000,000 times - and if you run out of memory then, you've got a problem.
  
  – MineR
  Mar 22 at 2:59
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  you can use Using block to decorate the MemoryStream or as well on RichTextBox that will help this object gets deallocated as soon as it comes out of scope, instead of calling Dispose.
  
  – Abhinaw Kaushik
  Mar 22 at 4:11
  

  
  
  
  


• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  
  Use a memory profiler to diagnose memory problems.
  
  – Eric Lippert
  Mar 22 at 5:27
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Youd did not stress test this. That would have ended with an OOM exception or (more likely) with an Ok.
  
  – Henk Holterman
  Mar 23 at 20:26
  
  

  
  
  
  

add a comment | 

-1

I know this code is far from perfect but in my case this was the only
way to do it correctly because im embedding WPF in C#, and when
applying text regulary the Spellcheck does not work correctly

So this is my code:

RichTextBox temphotfix = new RichTextBox();
temphotfix.Font = new Font(temphotfix.Font.Name, 14);
System.Windows.Documents.TextRange range = new System.Windows.Documents.TextRange(omschrijving.Document.ContentStart, omschrijving.Document.ContentEnd);
temphotfix.Text = oms;
string temp = temphotfix.Rtf;
byte[] byteArray = Encoding.ASCII.GetBytes(temp);
MemoryStream stream = new MemoryStream(byteArray);
range.Load(stream, DataFormats.Rtf);
range = null;
temp = null;
byteArray = null;
temphotfix.Dispose();
stream.Dispose();

I stress tested this, and it seems like ever about 5 times the script gets ran, it adds about 1 MB ram.

What am i doing wrong, i litterly made everyting i used null, or desposed them.

c#

share|improve this question

edited Mar 22 at 5:35

Uwe Keim

27.7k32134216

asked Mar 22 at 1:54

Mika SDMika SD

12

• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  
  Garbage Collection isn't going to happen when you set things to null or call Dispose. It runs when it deems the memory pressure requires it.
  
  – juharr
  Mar 22 at 2:18
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  The good news is that with 4GB free RAM, you can afford run this about 20,000 times before running out of memory. So see what happens when you run it 1,000,000 times - and if you run out of memory then, you've got a problem.
  
  – MineR
  Mar 22 at 2:59
  

  
  
  
  


• 
  
  
  

  
  2
  

  
  
  
  
  
  

  
  
  you can use Using block to decorate the MemoryStream or as well on RichTextBox that will help this object gets deallocated as soon as it comes out of scope, instead of calling Dispose.
  
  – Abhinaw Kaushik
  Mar 22 at 4:11
  

  
  
  
  


• 
  
  
  

  
  4
  

  
  
  
  
  
  

  
  
  Use a memory profiler to diagnose memory problems.
  
  – Eric Lippert
  Mar 22 at 5:27
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Youd did not stress test this. That would have ended with an OOM exception or (more likely) with an Ok.
  
  – Henk Holterman
  Mar 23 at 20:26
  
  

  
  
  
  

add a comment | 

I know this code is far from perfect but in my case this was the only
way to do it correctly because im embedding WPF in C#, and when
applying text regulary the Spellcheck does not work correctly

So this is my code:

RichTextBox temphotfix = new RichTextBox();
temphotfix.Font = new Font(temphotfix.Font.Name, 14);
System.Windows.Documents.TextRange range = new System.Windows.Documents.TextRange(omschrijving.Document.ContentStart, omschrijving.Document.ContentEnd);
temphotfix.Text = oms;
string temp = temphotfix.Rtf;
byte[] byteArray = Encoding.ASCII.GetBytes(temp);
MemoryStream stream = new MemoryStream(byteArray);
range.Load(stream, DataFormats.Rtf);
range = null;
temp = null;
byteArray = null;
temphotfix.Dispose();
stream.Dispose();

I stress tested this, and it seems like ever about 5 times the script gets ran, it adds about 1 MB ram.

What am i doing wrong, i litterly made everyting i used null, or desposed them.

c#

share|improve this question

edited Mar 22 at 5:35

Uwe Keim

27.7k32134216

asked Mar 22 at 1:54

Mika SDMika SD

12

RichTextBox temphotfix = new RichTextBox();
temphotfix.Font = new Font(temphotfix.Font.Name, 14);
System.Windows.Documents.TextRange range = new System.Windows.Documents.TextRange(omschrijving.Document.ContentStart, omschrijving.Document.ContentEnd);
temphotfix.Text = oms;
string temp = temphotfix.Rtf;
byte[] byteArray = Encoding.ASCII.GetBytes(temp);
MemoryStream stream = new MemoryStream(byteArray);
range.Load(stream, DataFormats.Rtf);
range = null;
temp = null;
byteArray = null;
temphotfix.Dispose();
stream.Dispose();

share|improve this question

edited Mar 22 at 5:35

Uwe Keim

27.7k32134216

asked Mar 22 at 1:54

Mika SDMika SD

12

share|improve this question

edited Mar 22 at 5:35

Uwe Keim

27.7k32134216

asked Mar 22 at 1:54

Mika SDMika SD

12

edited Mar 22 at 5:35

Uwe Keim

27.7k32134216

edited Mar 22 at 5:35

Uwe Keim

27.7k32134216

asked Mar 22 at 1:54

Mika SDMika SD

12

asked Mar 22 at 1:54

Mika SDMika SD

12

1 Answer
1

active

oldest

votes

-1

As I told above in comment you can using, you can try this code. hope this should help.

 using (RichTextBox temphotfix = new RichTextBox())
 
 temphotfix.Font = new Font(temphotfix.Font.Name, 14);
 System.Windows.Documents.TextRange range = new System.Windows.Documents.TextRange(omschrijving.Document.ContentStart, omschrijving.Document.ContentEnd);
 temphotfix.Text = oms;
 string temp = temphotfix.Rtf;
 byte[] byteArray = Encoding.ASCII.GetBytes(temp);
 using (MemoryStream stream = new MemoryStream(byteArray))
 
 range.Load(stream, DataFormats.Rtf);
 
 range = null;
 temp = null;
 byteArray = null;
 //temphotfix.Dispose();
 //stream.Dispose();
 

share|improve this answer

answered Mar 22 at 4:22

Abhinaw KaushikAbhinaw Kaushik

370212

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I did not fix it, but i tink it does help a little bit.
  
  – Mika SD
  Mar 22 at 21:42
  

  
  
  
  

add a comment | 

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-1

As I told above in comment you can using, you can try this code. hope this should help.

 using (RichTextBox temphotfix = new RichTextBox())
 
 temphotfix.Font = new Font(temphotfix.Font.Name, 14);
 System.Windows.Documents.TextRange range = new System.Windows.Documents.TextRange(omschrijving.Document.ContentStart, omschrijving.Document.ContentEnd);
 temphotfix.Text = oms;
 string temp = temphotfix.Rtf;
 byte[] byteArray = Encoding.ASCII.GetBytes(temp);
 using (MemoryStream stream = new MemoryStream(byteArray))
 
 range.Load(stream, DataFormats.Rtf);
 
 range = null;
 temp = null;
 byteArray = null;
 //temphotfix.Dispose();
 //stream.Dispose();
 

share|improve this answer

answered Mar 22 at 4:22

Abhinaw KaushikAbhinaw Kaushik

370212

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I did not fix it, but i tink it does help a little bit.
  
  – Mika SD
  Mar 22 at 21:42
  

  
  
  
  

add a comment | 

-1

As I told above in comment you can using, you can try this code. hope this should help.

 using (RichTextBox temphotfix = new RichTextBox())
 
 temphotfix.Font = new Font(temphotfix.Font.Name, 14);
 System.Windows.Documents.TextRange range = new System.Windows.Documents.TextRange(omschrijving.Document.ContentStart, omschrijving.Document.ContentEnd);
 temphotfix.Text = oms;
 string temp = temphotfix.Rtf;
 byte[] byteArray = Encoding.ASCII.GetBytes(temp);
 using (MemoryStream stream = new MemoryStream(byteArray))
 
 range.Load(stream, DataFormats.Rtf);
 
 range = null;
 temp = null;
 byteArray = null;
 //temphotfix.Dispose();
 //stream.Dispose();
 

share|improve this answer

answered Mar 22 at 4:22

Abhinaw KaushikAbhinaw Kaushik

370212

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  I did not fix it, but i tink it does help a little bit.
  
  – Mika SD
  Mar 22 at 21:42
  

  
  
  
  

add a comment | 

As I told above in comment you can using, you can try this code. hope this should help.

 using (RichTextBox temphotfix = new RichTextBox())
 
 temphotfix.Font = new Font(temphotfix.Font.Name, 14);
 System.Windows.Documents.TextRange range = new System.Windows.Documents.TextRange(omschrijving.Document.ContentStart, omschrijving.Document.ContentEnd);
 temphotfix.Text = oms;
 string temp = temphotfix.Rtf;
 byte[] byteArray = Encoding.ASCII.GetBytes(temp);
 using (MemoryStream stream = new MemoryStream(byteArray))
 
 range.Load(stream, DataFormats.Rtf);
 
 range = null;
 temp = null;
 byteArray = null;
 //temphotfix.Dispose();
 //stream.Dispose();
 

share|improve this answer

answered Mar 22 at 4:22

Abhinaw KaushikAbhinaw Kaushik

370212

 using (RichTextBox temphotfix = new RichTextBox())
 
 temphotfix.Font = new Font(temphotfix.Font.Name, 14);
 System.Windows.Documents.TextRange range = new System.Windows.Documents.TextRange(omschrijving.Document.ContentStart, omschrijving.Document.ContentEnd);
 temphotfix.Text = oms;
 string temp = temphotfix.Rtf;
 byte[] byteArray = Encoding.ASCII.GetBytes(temp);
 using (MemoryStream stream = new MemoryStream(byteArray))
 
 range.Load(stream, DataFormats.Rtf);
 
 range = null;
 temp = null;
 byteArray = null;
 //temphotfix.Dispose();
 //stream.Dispose();
 

share|improve this answer

answered Mar 22 at 4:22

Abhinaw KaushikAbhinaw Kaushik

370212

answered Mar 22 at 4:22

Abhinaw KaushikAbhinaw Kaushik

370212

answered Mar 22 at 4:22

Abhinaw KaushikAbhinaw Kaushik

370212