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.S.Rod. wrote:
Hey David, I don't get the point here. There's nothing wrong about homework posts, as long as the original poster really shows attempt to solve the problem. The fact is, statistically, most homework posters are just posting in Cp as well as a few other devsites, and return the next day to pick the answers. As long as someone doesn't show a real attempt to understand and solve a problem - which is what programming is all about - it's not useful to answer.
True, that is how it usually goes. However, even when someone does show initiative, like this guy did, and admits that he's stumped on his homework, they usually wind up getting flamed to death anyway.
.S.Rod. wrote:
And anyone is free to waste time offering comprehensive answers
Like yours?  Actually, what do you think about my answer? Was I too explanative, or not enough? I didn't think I gave him enough code to just copy and paste into a solution, do you?
any idiot
can write haiku you just stop
at seventeenth syl
-ThinkGeek Fortunes
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David, thank you for your help
and I would also just like to clarify something.. I was not hoping for someone to put up some code, that I could simply cut and paste into my application. All I wanted was to make sure they way that I was going about trying to solve my problem was an efficient way, I thought that if I asked then maybe someone could point me in the right direction.
This was not a homework question. I have not been taught C# at uni, I have learnt what I do know from books, MSDN and tutorials, in my spare time, its a shame that people do post messages just to save time and hassle of learning themselves, it gives the rest of us students bad images 
thanks.
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No problem...and I'm glad that you're taking time to learn C# by yourself rather than just stick with what your uni's trying to teach you. The college I'm transfering to only "officially" teaches Java.  However, I've spoken with one of the professors in the compsci dept, and he said that most of the profs are fine with students using C# because it's so much like Java in it's OOP-ness. So that made me very happy. 
But yeah...you're welcome for the answer. I hope it helped.
any idiot
can write haiku you just stop
at seventeenth syl
-ThinkGeek Fortunes
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David Stone wrote:
Actually, what do you think about my answer?
It's ok. If there were a built-in code-snippet feature in the Cp navigation bar, then I would add the code, and would point to it on posts related to this issue in the future.
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Hi,
I finally figured how to parse my string as singles but I am looking for a way to prevent the user from entering non numeric values in the textBox, could a maskEdit do this or is there a way to do it directly with the textBox. Thanks
Jean S. Paquet
// JS Paquet
cout << "Thank you all" << endl;
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Just handle the KeyPress event of the textbox check each character...
<br />
textBox1.KeyPress += new new System.Windows.Forms.KeyPressEventHandler(this.textBox1_KeyPress);<br />
private void textBox1_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
{
if (!Char.IsDigit (e.KeyChar))
{
e.Handled = true;
}
}
Andreas Philipson
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and how do I handle multiple verification, I want to allow control (BKSPACE, etc.) and dots.
// JS Paquet
cout << "Thank you all" << endl;
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Hello, I've inserted below a portion of source code from a non-copyrighted freeware mime parsing algorithm implemented in C# I came across on the internet.
I'm fairly new to c# and I'm finding this algorithm painfully slow and was wondering if anyone had any suggestions for improving this.
It's actually not bad for any email that contains mime entries that are under 300k, but I tested against an email with a multi-megabyte attachment and it took approximately 10 minutes to process it. The slow bit is definitely the part that searches for the boundaries "---" line by line.
Any suggestions would be very welcome. Once I have it working properly and consistently I will post it as an article.
internal ArrayList ParseEntries(MemoryStream msgStrm,int pos,string boundaryID)<br />
{<br />
ArrayList entries = new ArrayList();<br />
<br />
msgStrm.Position = pos;<br />
<br />
if(boundaryID.Length > 0){<br />
using(TextReader r = new StreamReader(msgStrm)){<br />
string line = r.ReadLine();<br />
<br />
bool firstFound = false;<br />
string buffer = "";<br />
while(line != null){ <br />
if(line.StartsWith("--" + boundaryID)){<br />
if(buffer.Length > 0){<br />
entries.Add(new MimeEntry(buffer,this)); <br />
}<br />
<br />
firstFound = true;<br />
buffer = "";<br />
}<br />
else{<br />
if(firstFound){<br />
buffer += line + "\r\n";<br />
}<br />
}<br />
<br />
line = r.ReadLine();<br />
}<br />
}<br />
}<br />
<br />
return entries;<br />
}
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Have you tried using a System.IO.BufferedStream?
I rated this article 2 by mistake. It deserves more. I wanted to get to the second page... - vjedlicka 3:33 25 Nov '02
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Hello, no I haven't. I was thinking there would be no benefit to that since it's a memory stream to begin with, would that not be the case?
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Hello, I am looking for assistance with the basic class skeleton that would allow me to create a fuction similar to:
MyClass.FieldByName('firstname').AsString
OR
MyClass.FieldByName('startdate').AsDate
Etc ....
public class MyClass
{
public void Run()
{
// do something here ...
}
public ?????? FieldByName() ?????
{
????
}
}
Any assistnace would be appreciated.
Thanks
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public class MyClass
{
private string firstname = "";
public string FirstName
{ get { return firstname;}
set { firstname = value;}}
private DateTime startdate = DateTime.Now;
public string StartDate
{ get { return startdate;}
set { startdate = value;}}
}
I rated this article 2 by mistake. It deserves more. I wanted to get to the second page... - vjedlicka 3:33 25 Nov '02
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If possible, I would like to go 1 level deeper with having the fuction of FieldbyName that is passed dynamic data which could be firstname or startdate and also specify if the return is to be of type string, date, integer or etc. The FieldByName method would search a file or database for a match of the requested field and then return the results.
This is similar to how I have seen several database engines return the requested field as a specific type.
MyClass.FieldByName('firstname').AsString
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Look at System.Reflection
I rated this article 2 by mistake. It deserves more. I wanted to get to the second page... - vjedlicka 3:33 25 Nov '02
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I am not that familiar with System.Reflection. Can you provide any kind of example of how to use this with creating a class similar to
MyClass.FieldByName("company").AsString
MyClass.FieldByName("account").AsInteger
MyClass.FieldByName("begindate").AsDate, etc .....
public class MyClass
{
public string FieldByName(string fvalue)
{
}
}
Any assistance would be appreciated.
Thanks
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Hello everyone!
I am migrating an application to the .NET platform using C#. Unfortunately, I still have to use a few old COM+ components that store business logic. I have no problems creating the object that I require, however, the arguments marked as "out" don't get assigned any values after the method that I am using is called.
I tried this using the two methods to access COM+ components: RWC wrappers and late binding. The former looks like this:
string mItemId = "{Some Guid}"
double mACustPrice = 0;
ObjectName objPrice = new ObjectName();
objPrice.GetPrice(mItemId,out mACustPrice);
After executing this code, the argument mACustPrice contains the value that I originally assigned to it, which is 0 (zero).
The late binding one looks like this:
string mItemId = "{Some Guid}"
double mACustPrice = 0;
Type objAddType = Type.GetTypeFromProgID("ObjectName");
object objPrice = Activator.CreateInstance(objAddType);
object[] objArguments = new object[] {mItemId,mACustPrice};
objAddType.InvokeMember("GetPrice",BindingFlags.InvokeMethod,null,objPrice,objArguments);
string test = objArguments[1].ToString();
After executing this code, the string test contains the value that I originally assigned to the mACustPrice variable, which is 0 (zero).
Any help will be greatly appreciated.
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Assuming you mean that the interface is marked with [out, retval] this should work
mACustPrice = objPrice.GetPrice(mItemId);
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Thanks for the quick reply!
Two problems with this solution:
1. I have more than one "out" argument. I simplified the code to make the message more readable.
2. The argument is marked as [out] only, not [retval]
Any other suggestions will be greatly appreciate it. Thanks again!
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Hi!
I have some questions:
1. Does anyone know how in runtime detect how many memory used by each class?
2. Does anyone know how to minimize memory usage of application (like unloading of unneeded assemblies or something else)?
3. Does anyone know any resource with "performance" + "memory usage" tests on Windows.Forms?
I have such situation:
I wrote application which make some automation tasks like send e-mail, generate Excel reports (office automation) and etc. Application is not too large but it’s usage of memory make customer dizzy. As you know customer dizzy become a developer soon. Now I have a great  task to minimize memory usage of application. First of all I need to know how many each class use memory, second step rewrite code of such classes.
To my opinion 30-40 Mb memory usage (on computer with 128 Mb) for garbage collector is good enough...
Good Luck
Alex Kucherenko
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I don't have answers for all of your questions, but here something to get you started
If you are creating COM objects then you can force their release by doing
MyObject=null;
System.GC.Collect();
System.GC.WaitForPendingFinalizers();
System.GC.Collect();
Be carefull when looking at memory usage in the Task Manager it isn't telling you the whole truth. To determine the real memory usage of an application you could:
' Visual Basic .NET
Dim NotepadMemory as Integer
Dim component1() as Process
component1 = Process.GetProcessesByName("Notepad.exe")
NotepadMemory = component1(0).PrivateMemorySize
Console.WriteLine("Memory used: " & NotepadMemory & ".")
// C#
int memory;
Process[] notepads;
notepads = Process.GetProcessesByName("Notepad.exe");
notepadMemory = notepads[0].PrivateMemorySize;
Console.WriteLine("Memory used: {0}.", notepadMemory);
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Hi everybody !
Here is pic ...
Please open to see it if browser is not auto open
In the present , I need your help so much. I want to design a form like this. Whatever I mask by Red point is neccessary. Please help me to do that.
Thank so much !
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The post just below references a free .NET layout library.
Another url of interest, the genghis[^] project.
And of course, there are many C# controls related articles on CodeProject which act like unit blocks.
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I’ve just upgraded to the new MagicLibrary version 1.7.4.0 (I used 1.7.0.0 before that) and have encountered a focus management problem in the DockingManager.
I have several forms and panels created inside the MagicLibrary docking manager and I have a rich textbox as my inside window/filler window.
If any of the forms inside the dockingmanager have shortcuts they will hi-jack focus from my rich textbox. 
For instance if I have a panel with a “&Test” button created inside the DockingManager then I can no longer type “T” inside my Rich textbox when I do so the focus is transferred to the panel and the button is pressed.
This was not present in 1.7.0.0 (haven’t tested on 1.7.3.0).
Anybody have some clues as to avoiding this behavior.
Best regards Peter Hjortholm
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Hi,
I have several controls in my form ( a tab form... that includes combos, edit boxes, grids, ...)....
Is there a way to know if any of this control has changed, just to change the flag and save changes ? ( I know that I could go control by control .... but is there a more generic way ?).
Thanks, greetings
Braulio
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If I understand what you are doing, then just use events with event handlers.
All components have events for changes and stuff, for example the TextBox has a TextChangedEvent. In your form you can just add it to listen for this event.
Using properties panel on the form design just click the events button (little lightning bolt above the panel of properties) and get a list of events for the Textbox you have slected, look for TextChanged or TextChanging, and double click that field. It will add a new Event handler in your form code, and you can do what ever in that method. It is the exact same as a button1_Click( object sender, MouseEventArgs e ) that you most likely have probably used before. All otehr controls have events as well, ComoboBox.SelectedChanged I think as well.
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