regex problem [modified] - C# Discussion Boards

Re: Any one having code to compare two xml files....?

April Fans14-Jan-10 22:16

14-Jan-10 22:16

hi, follow the two links below.

http://forums.devx.com/showthread.php?t=168067
http://www.daniweb.com/forums/thread46345.html#

best regards.

April

Comm100 - Leading Live Chat Software Provider

modified 27-May-14 8:55am.

Newbie struggling with ArgumentException

x3mjeff14-Jan-10 16:55

x3mjeff

14-Jan-10 16:55

Hi,

As the subject states I'm a complete newbie in programming.
I've coded a little program that uses picture boxes to display images of dices.
After filling the picture boxes with an image a PictureBox[pictureBoxNumber].Image.Dispose() is executed.
All the loops I'm using work fine, but if I press the "Alt" or "Alt Gr" key on the keyboard after the button_Click event has run an ArgumentException gets thrown.
The stack trace doesn't make me any wiser though. I've copied it to be able to post it so here it is:

bij System.Drawing.Image.get_Width()
bij System.Drawing.Image.get_Size()
bij System.Windows.Forms.PictureBox.ImageRectangleFromSizeMode(PictureBoxSizeMode mode)
bij System.Windows.Forms.PictureBox.OnPaint(PaintEventArgs pe)
bij System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
bij System.Windows.Forms.Control.WmPaint(Message& m)
bij System.Windows.Forms.Control.WndProc(Message& m)
bij System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
bij System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
bij System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
bij System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
bij System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
bij System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
bij System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
bij System.Windows.Forms.Application.Run(Form mainForm)
bij prjDices.Program.Main() in E:\Mijn documenten\Visual Studio 2008\Projects\solTeerlingen\prjTeerlingen\Program.cs:regel 18
bij System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
bij System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
bij Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
bij System.Threading.ThreadHelper.ThreadStart_Context(Object state)
bij System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
bij System.Threading.ThreadHelper.ThreadStart()

I've been trying to figure out what happens for quite a while now but to no avail.
I'm really completely stuck on this.
If someone could help me understand what causes the exception I'd be very thankful.
I'm not asking for a solution just help to figure out what in heaven's name is going on.

Thanks in advance,

Jeff

Re: Newbie struggling with ArgumentException

Super Lloyd14-Jan-10 17:01

Super Lloyd

14-Jan-10 17:01

I'm curious as to why you Dispose() of the images?
they are in use in the picture box, so disposing them will lead to problems!
maybe that's even the cause (for some twisted reason) of your mysterious problem.
but do dispose of the images, ONCE you got rid of them!

A train station is where the train stops. A bus station is where the bus stops. On my desk, I have a work station....
_________________________________________________________
My programs never have bugs, they just develop random features.

Re: Newbie struggling with ArgumentException

x3mjeff14-Jan-10 18:15

x3mjeff

14-Jan-10 18:15

Hi Super Lloyd,

Thanks for responding.
About the reason to dispose of the images.
In an application I wrote earlier a picture box control was also used.
When starting the application I also started task manager and observed what happened.
The picture boxes really eat away memory if the images are not disposed of.

Greetz and thanks,

Jeff

Re: Newbie struggling with ArgumentException

Luc Pattyn14-Jan-10 17:29

Luc Pattyn

14-Jan-10 17:29

you can't successfully call Dispose() on an Image inside a PictureBox.

this would be the proper way to switch a PictureBox from image1 to image2:

Image newImage=...;                      // get a new image (maybe from disk)
Image oldImage=pb.Image;
pb.Image=newImage;                       // first replace the old image by the new one
if (oldImage!=null) oldImage.Dispose();  // assuming we never need that old image again in this app

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Re: Newbie struggling with ArgumentException

x3mjeff14-Jan-10 18:32

x3mjeff

14-Jan-10 18:32

Hi Luc,

Thanks for replying.
You made me think about what was going on and yes sir problem solved.
Seeing that I disposed of the images after every loop it's quite obvious that in the next run no images were available.
The solution was actually fairly easy.
Before I dispose of the image I use a boolean expression to determine whether or not an image is present.
Like this:

if (PictureBox[pictureBoxNumber].Image != null) 
{
    PictureBox[pictureBoxNumber].Image.Dispose();
}

Greetz and thanks for the insight,

Jeff

Re: Newbie struggling with ArgumentException

Luc Pattyn15-Jan-10 0:43

Luc Pattyn

15-Jan-10 0:43

that is not good enough, you can't dispose of that image as it is still in use by the PictureBox itself,
you really should do it the way I have shown: copy the reference to a local variable, remove the image from the PictureBox, and only then dispose of it.

Smile | :)

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modified on Friday, January 15, 2010 7:40 AM

regex problem [modified]

uglyeyes14-Jan-10 15:35

uglyeyes

14-Jan-10 15:35

Hi,
my regex works fine in a regextest tool its just only when i try to filter the content via c# it doesnt work. here is my code

string fName = @"data.txt";//path to text file            StreamReader testTxt = new StreamReader(fName);            string allRead = testTxt.ReadToEnd();//Reads the whole text file to the end            testTxt.Close(); //Closes the text file after it is fully read.            string regMatch = @"(?<=\<div class=""middleadimggold""\>).*?(?=\</div\>)"; //string to search for inside of text file. It is case sensitive.            if (Regex.IsMatch(allRead, regMatch))//If the match is found in allRead            {                Console.WriteLine("found\n");            }            else            {                Console.WriteLine("not found\n");            }

part of the content that should match

<div class="middleadimggold">



<a class="asdf" href="http://www.asdf">
asdf</a>
<p>
asdf</p>
<p>asdf</p><p>asdf</p>

<p><span class="blue">asdf</span>
<a class="de" href="http://www.4asdf"><span class="a">(See on map)</span></a></p>

<p><span class="blue">asdf</span></p>



<span class="xx">


asdf
</span>

</div>

please note the spacing in the content, not sure if it matters?

modified on Thursday, January 14, 2010 10:06 PM

Re: regex problem

uglyeyes14-Jan-10 16:37

uglyeyes

14-Jan-10 16:37

ok this fixed the problem

if (Regex.IsMatch(allRead, regMatch, RegexOptions.Singleline)

singleline option that is. thanks for nothing

Re: regex problem

OriginalGriff14-Jan-10 21:34

OriginalGriff

14-Jan-10 21:34

Didn't I tell you that yesterday[^]?

All those who believe in psycho kinesis, raise my hand.

Re: regex problem

Ravi Sant14-Apr-11 1:45

Ravi Sant

14-Apr-11 1:45

you have asked question by your-self and replied it back too again with answer already given by someone.

♫ 99 little bugs in the code,
99 bugs in the code
We fix a bug, compile it again
101 little bugs in the code ♫

Converting Image file to binary file

Member 451421814-Jan-10 15:08

Member 4514218

14-Jan-10 15:08

How to convert Any type file (bmp,Jpg,jpeg etc...)to binary or blob file to store it in sql 2005.

Re: Converting Image file to binary file

loyal ginger14-Jan-10 15:33

loyal ginger

14-Jan-10 15:33

Any file (including text file) is a binary file. You can treat any file as a binary large object (blob) to be stored in a database. You don't need to do any conversion. Any comments on this opinion are welcome.

Re: Converting Image file to binary file

Luc Pattyn14-Jan-10 16:34

Luc Pattyn

14-Jan-10 16:34

correct. Any file is binary, some files also are text files, others also are image files, etc.

Smile | :)

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Re: Converting Image file to binary file

Giorgi Dalakishvili14-Jan-10 19:22

Giorgi Dalakishvili

14-Jan-10 19:22

Have a look at the following article: How To Read and Write BLOB Data by Using ADO.NET with Visual C# .NET[^]

Giorgi Dalakishvili

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Request: Help: Amazon Webservice with c#.net seemed to change things in recent update

tonyonlinux14-Jan-10 13:15

tonyonlinux

14-Jan-10 13:15

I am trying to use the amazon web services in my c# program but I kept getting a http 410:gone error.
I did some research and found webservices.amazon.com/AWSECommerceService/AWSECommerceService.wsdl is suppose to be the correct web reference. In any event, the following appears to be obsolete and I can not find it replacement. What I am wanting to do is query amazon based on a title and return the price.

I thought AmazonSearchService srchrequest = new AmazonSearchService(); would work but that appears to have been replaced and i haven't a clue with what. I thought maybe AWSECommerceService srch = new AWSECommerceService();

Then also the KeywordRequest kr = new KeywordRequest(); has been removed. so I guess how do you do keyword searches now?
I was hoping to do something like this

ProductInfo pi = srch.KeywordSearchRequest(kr); //productinfo no longer exist

 Details[] allDetails = pi.Details; // make array and store results from the product info

allDetails no longer exist either Frown | :(

Am I going about this all wrong or what? I can't seem to figure it out..
The closest I see are two things in the object brower. Price and then itemsearchrequest but I can't seem to figure out how one would use that to get the price of the item.

any help or a reference to a working tutorial or something would be great.
thanks

Re: Request: Help: Amazon Webservice with c#.net seemed to change things in recent update

Abhinav S14-Jan-10 16:01

Abhinav S

14-Jan-10 16:01

This documentation[^] may be of some help.

There are only 10 types of people in this world — those who understand binary, and those who don't.

Re: Request: Help: Amazon Webservice with c#.net seemed to change things in recent update

tonyonlinux14-Jan-10 18:04

tonyonlinux

14-Jan-10 18:04

Thanks for that link..

Here is something I came up with but for some reason It keeps throwing an exception.

The assembly with display name 'book list project.XmlSerializers' failed to load in the 'LoadFrom' binding context of the AppDomain with ID 1. 
The cause of the failure was: System.IO.FileNotFoundException:
Could not load file or assembly 'book list project.XmlSerializers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies.
The system cannot find the file specified.The assembly with display name 'book list project.XmlSerializers' failed to load in the 'LoadFrom' binding context of the AppDomain with ID 1. 
The cause of the failure was: System.IO.FileNotFoundException: Could not load file or assembly 'book list project.XmlSerializers, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.

here is the code I'm calling:

private void btn_GetPrice_Click(object sender, EventArgs e)
       {
           /* Have a look at http://www.amazon.com/gp/aws/sdk/ for the list of different types of searchs */

           AWSECommerceService aws = new AWSECommerceService();
           ItemSearchRequest request = new ItemSearchRequest();

           request.SearchIndex = "Books";
           request.Power = "title:" + titleTextBox.Text;
           request.ResponseGroup = new string[] { "Small" }; // allows a return of data like product id, price and so on
           request.Sort = "salesrank"; //sorts based on the ranking system

           ItemSearchRequest[] requests = new ItemSearchRequest[] { request };

           ItemSearch itemSearch = new ItemSearch();
           itemSearch.AssociateTag = "XXXXXX";
           itemSearch.SubscriptionId = "XXXX";
           itemSearch.Request = requests;

           try
           {
               ItemSearchResponse response = aws.ItemSearch(itemSearch);
               Items info = response.Items[0];
               Item[] items = info.Item;

               for (int i = 0; i < items.Length; i++)
               {
                   Item item = items[i];
                   priceTextBox.Text = item.ItemAttributes.ListPrice.ToString();
               }
           }
           catch (Exception ex)
           {
               MessageBox.Show(ex.ToString());

           }


       }

string conversion to double

Aljaz11114-Jan-10 12:01

Aljaz111

14-Jan-10 12:01

how to convert string like 0.5555 to rounded double value of 0.6 in this case? Because when i use Convert.ToDouble("0.555555") the result is 55555555..

Thanks

Re: string conversion to double

Luc Pattyn14-Jan-10 12:57

Luc Pattyn

14-Jan-10 12:57

Hi,

the Convert class (or the Parse methods of several classes) will turn a string into a numeric value that matches the string as good as it can. There is no way around that.
You can change the result by adding another statement that operates on the numeric variable, something like double d=Math.Round(d,1);. AFAIK there isn't a single statement that will do both at once.

read up on the Math.Round() method.

Smile | :)

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Until then, please insert them manually.

Re: string conversion to double

Aljaz11114-Jan-10 13:02

Aljaz111

14-Jan-10 13:02

Still..you can't convert string 0.555 to double value 0.555? Always removes 0 from first place..i used another more complicated way..i separate string..i get second decimal..check if it is greater than 5..if yes i inc first decimal and at the end i put numbers converted to string back together.

Re: string conversion to double

DaveyM6914-Jan-10 13:12

DaveyM69

14-Jan-10 13:12

Aljaz111 wrote:
you can't convert string 0.555 to double value 0.555

Of course you can, just use double.Parse or better still TryParse

double d = double.Parse("0.555");

Dave

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

Re: string conversion to double

Eddy Vluggen14-Jan-10 13:13

Eddy Vluggen

14-Jan-10 13:13

Aljaz111 wrote:
Always removes 0 from first place..

Is the decimal separator in your country by any chance a comma? How about this for verification;

string s = "0.55555";
double d = Convert.ToDouble(s, System.Globalization.CultureInfo.InvariantCulture);
string s2 = d.ToString("#,#0.0");
Console.WriteLine(s2);

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Re: string conversion to double

Aljaz11114-Jan-10 13:22

Aljaz111

14-Jan-10 13:22

it is. Thanks or info

Re: string conversion to double

DaveyM6914-Jan-10 13:30

DaveyM69

14-Jan-10 13:30

Good thinking Thumbs Up | :thumbsup:

Dave

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

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