download file memory usage - C# Discussion Boards

download file memory usage

2-Apr-07 20:50

A menu is ALWAYS on the top of a form.

Christian Graus - Microsoft MVP - C++
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"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

Planker2-Apr-07 17:51

Planker

2-Apr-07 17:51

I am writing a program that downloads a database on remote laptops, When downloading the file I noticed that my program uses about 15 MB of memory and calls Windows Explorer and WE uses about 16 MB of memory, the database file is about 60MB. I was wondering if there is something i am missing to reduce the amount of memory I am using. the laptops that will be using this app are older laptops and I want this process not to interfere with another database app that is very memory intensive. and once the download is complete it does not release the memory to a reasonable level any ideas.

Thanks
Rob

FileStream fs = null; //' To access the local file;
WebRequest req;
//StreamReader sr;

try
{
// This sets up the Request instance
req = WebRequest.Create("http://www.domian.com/file.zip");
// Use a GET since no data is being sent to the web server
req.Method = "GET";
// This causes the round-trip
WebResponse rsp = req.GetResponse();
try
{
// Open the file to stream in the content
fs = new FileStream("file.zip", FileMode.Create);
// Copy the content from the response stream to the file.
CopyData(rsp.GetResponseStream(), fs);
}

Re: download file memory usage

Phillip M. Hoff2-Apr-07 18:22

Phillip M. Hoff

2-Apr-07 18:22

How exactly are you copying the data from the response stream to the file stream?

Another thing to consider is that looking at memory usage in the Task Manager (which is what I assume you are doing) can often be misleading. The allocated memory listed for a .NET-based application often includes memory which has been collected (i.e. released) as far as the application goes, but which simply hasn't been given back to the system by the runtime. However, that memory can be given back if and when the runtime believes the system needs it.

If there are specific performance (memory or CPU) requirements for your application, then I would suggest using a profiler to help determine where the bottlenecks are in your application.

-Phil

How to remove space in a String?

Khoramdin2-Apr-07 16:16

Khoramdin

2-Apr-07 16:16

Hello everyone,

I have a string which I would like to remove the SPACE in the string. For example, I would like to change "I would like to remove any space." into "Iwouldliketoremoveanyspace.".

Can anyone be kind enough to tell me how I can get this done?

Thank you very much and have a great day.

Khoramdin

Christian Graus2-Apr-07 16:19

2-Apr-07 16:19

mystring = mystring.Replace(" ", "");

Muammar©2-Apr-07 20:00

2-Apr-07 20:00

string TrimmedString = YourString.Trim();

Smile: A curve that can set a lot of things straight!
(\ /)
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JacquesDP2-Apr-07 21:00

JacquesDP

2-Apr-07 21:00

Doesn't that only remove the spaces at the beginning and end of the string?

He who laughs last is a bit on the slow side

Muammar©2-Apr-07 21:26

2-Apr-07 21:26

True

.. sorry, you can use Christian's suggestion replacing white spaces.

Smile: A curve that can set a lot of things straight!
(\ /)
(O.o)
(><)

Re: How to remove space in a String? [modified]

Guffa2-Apr-07 21:38

Guffa

2-Apr-07 21:38

Muammar© wrote:
you can use Christian's suggestion replacing white spaces.

No. That only removes spaces. White space includes characters like tab and line breaks.

---
single minded; short sighted; long gone;

Muammar©2-Apr-07 21:49

Hi i ahv this code just it will remove all spaces and special chars also

2-Apr-07 21:49

Okay "black" spaces;P.. no seriously, you can remove tabs at least doing this:

string strTabs = "a\t\t\tb";
MessageBox.Show("Before: "+str);
MessageBox.Show("After: "+str.Replace("\t",@"<tab>"));

string strNewLines = "a\n\n\nb";
MessageBox.Show("Before: "+str);
MessageBox.Show("After: "+str.Replace("\n",@"<enter>"));

-- modified at 4:01 Tuesday 3rd April, 2007

Smile: A curve that can set a lot of things straight!
(\ /)
(O.o)
(><)

sooreeagt2-Apr-07 21:15

sooreeagt

2-Apr-07 21:15

using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;

public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
Response.Write(Get("HI-bhas,-"));
}

public string Get(string str)
{
StringBuilder builder = new StringBuilder();
for (int i = 0; i < str.Length; i++)
{
if (char.IsLetterOrDigit(str[i]))
{
builder.Append(str[i]);
}
}
return builder.ToString();
}
}

Suresh.R

Re: Hi i ahv this code just it will remove all spaces and special chars also

Christian Graus2-Apr-07 21:22

Re: Hi i ahv this code just it will remove all spaces and special chars also

2-Apr-07 21:22

That's really awful. Why would you rewrite a method that's already in the framework ?

Re: Hi i ahv this code just it will remove all spaces and special chars also

2-Apr-07 21:31

Are you talking about Normalize() Unsure | :~

Smile: A curve that can set a lot of things straight!
(\ /)
(O.o)
(><)

Christian Graus2-Apr-07 22:52

C# HELP...here...about the popup file

2-Apr-07 22:52

No, I am talking about string.Replace.

Missy Glory2-Apr-07 15:32

Missy Glory

2-Apr-07 15:32

Hi programmer,
Im doing a project, my question is " How to allow the file to popup when the button is click." The file is in (C:\Documents and Settings\Lohsk\My Documents\Introduction.txt). Can someone help me Confused | :confused:

.The program must written in c#.

Re: C# HELP...here...about the popup file

Christian Graus2-Apr-07 15:46

Re: C# HELP...here...about the popup file

2-Apr-07 15:46

Process.Start will open your text file in the default program ( probably notepad ). You can use File.ReadAllText to read it and display it yourself.

liewcp2-Apr-07 16:07

liewcp

2-Apr-07 16:07

try this:-

private void button1_Click(object sender, EventArgs e)
{
try
{
System.Diagnostics.Process process = new System.Diagnostics.Process();
process.StartInfo.FileName = @"C:\Documents and Settings\Lohsk\My Documents\Introduction.txt";
process.StartInfo.ErrorDialog = true;
process.Start();
}
catch (Exception err)
{
MessageBox.Show(err.ToString());
}
}

Re: C# HELP...here...about the popup file