Using C# .NET 2 and Generic ReadOnly Collections - C# Discussion Boards

Re: Text Won't Show in MessageBox [modified]

Rogenator7-Jul-06 11:15

7-Jul-06 11:15

Greetings:
That`s really strange, i have all of the windows updates, and never had this problem, i really dont know what could be the problem, one workaround could be to create another form in the application that serves as the message box, then you could just pass the text to display to it and show it, something like this:

//Assuming youre MessageBox form is called FormM
FormM temp=new FormM();
temp.setText("blabla","blabla");//A method you define for setting the text
temp.ShowDialog();

//The method for defining the text. This method is inside FormM
public void setText(string x1,string x2)
{
this.Text=x2;
label1.Text=x1;//Assuming you´re using a label for the text
}

hope that helps until you fix the problem Smile | :)

"Failure is the best reason to start all over agin with more knowledge"
-Henry Ford.

-- modified at 17:16 Friday 7th July, 2006

Re: Text Won't Show in MessageBox

cje7-Jul-06 11:51

cje

7-Jul-06 11:51

I actually had this happen to me as well - are you by any chance runnin McAfee? If so this could be the problem...McAfee has a patch. Check out McAfee web site item http://forums.mcafeehelp.com/viewtopic.php?t=32979[^]

If you are not running McAfee then obviously this isn't this issue but I thought it was worth mentioning

cje

Re: Text Won't Show in MessageBox

MartyExodus11-Jul-06 9:24

MartyExodus

11-Jul-06 9:24

Thanks a lot! That actually worked.

It took us a whil;e to find the patch, but we managed to download and install Patch 11. We were only at patch level 1. O_o

Thanks.

using System.People;

Person me = new Person();

me.Certifications = null;
me.Experience = little;
me.WantsToLearn = true;
me.InSchool = true;

me.AskQuestions("C# .NET 2003");

Re: Text Won't Show in MessageBox

Dustin Metzgar11-Jul-06 9:50

Dustin Metzgar

11-Jul-06 9:50

Wow, that's pretty sickening. No wonder I don't use that McAfee crap.

Logifusion[^]

Drawing on Map

Sandy Saroha7-Jul-06 4:51

Sandy Saroha

7-Jul-06 4:51

Hi All,

I got a problem where I want to draw some lines on a Map(JPEG, BMP, GIF), and data for these lines are in Latitude and logitude form. I have some idea that I can do it by Drawing object(GDI object), but converting latitude and longitude data into pixels might be error prone.

Can anybody help me ?
Is there any efficient way for doing it ?

Please let me know.

Thanks
Sandeep

Re: Drawing on Map

Jun Du7-Jul-06 5:17

Jun Du

7-Jul-06 5:17

We had some good discussion about lat/lon to distance conversion around this article.

Search CP for "GPS" and you can get more.

Best,
Jun

Re: Drawing on Map [modified]

Shaun Wilde7-Jul-06 5:19

Shaun Wilde

7-Jul-06 5:19

I suggest you become very familier with coordinate systems as you attempting to plot a coordinate system designed for a 3D sphere (ish) onto a 2D image. There are so many approaches depending on what you know about the image(s) that you need to study them all. Drawing a black blob on the image is the least of your worries.

I'll be more enthusiastic about encouraging thinking outside the box when there's evidence of any thinking going on inside it. - pTerry
www.many-monkeys.com

Using C# .NET 2 and Generic ReadOnly Collections

satvinder12345677-Jul-06 4:30

satvinder1234567

7-Jul-06 4:30

I am developing a Save method in my business Process that allows me to Save the current object (scheme) and all it child collection objects, so that all I need to do is call bp.Save(Scheme) and it saves via reflection the entire tree.

I have a class "Scheme" which contains as properties a number of ReadOnlyCollections e.g. ReadOnlyCollections<milestone> and ReadOnlyCollections<partner>.

"Milestone", "Partner" and "Scheme" have a "Save" method and inherit from the same object (hcdbEntity).

I want use Reflection to call the "Save" method on the Scheme and each Milestone in the collection(becuase I have many other collections hanging off Scheme and Milestone) and don't want to hard code.

When I view the property info for the scheme I have to check for contains "ReadOnlyCollection" as the property.PropertyName holds "ReadOnlyCollection'1".

property.PropertyType = {Name = "ReadOnlyCollection`1" FullName = "System.Collections.ObjectModel.ReadOnlyCollection`1[[Business.Entity.Scheme.SchemeMilestone, Business.Entity.Scheme, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]]"}

The currentValue that gets returned by calling the Invoke method returns a list of the seperate items in the collection, but gives me no way to process them individually, or get a handle on them to call the Invoke method to call their Save method, or to be able to transverse down the tree to call collections further down as required.

private void DoA(HcdbEntityClass entity)
{
Type t = null;
System.Reflection.PropertyInfo[] properties;
object currentValue = null;
t = entity.GetType();
properties = t.GetProperties();
foreach (PropertyInfo property in properties)
{
Type a = property.GetType();
if (property.PropertyType.Name.Contains("ReadOnlyCollection"))
{
currentValue = t.InvokeMember(property.Name, BindingFlags.GetProperty, null, entity, new object[0], CultureInfo.CurrentCulture);
}
}
}

I am assuming that I need to return a object and use the generic.MakeGenericType to regenerate the collection type for the object. I have spent more than a day trying without sucesss, anybody done this sort of thing before and have a small sample;), or am what I am doing impossible.

nearly bald
Cry | :((

Satvinder

Re: Using C# .NET 2 and Generic ReadOnly Collections

Not Active7-Jul-06 4:51

Not Active

7-Jul-06 4:51

Have you considered serialization rather than reflecting through your objects?

Re: Using C# .NET 2 and Generic ReadOnly Collections

Josh Smith7-Jul-06 4:52

Josh Smith

7-Jul-06 4:52

Why don't you just serialize it with the BinaryFormatter, SoapFormatter, or XmlSerializer?

:josh:
My WPF Blog[^]

Re: Using C# .NET 2 and Generic ReadOnly Collections

Ennis Ray Lynch, Jr.7-Jul-06 8:19

Ennis Ray Lynch, Jr.

7-Jul-06 8:19

You can define an interface so you do not have to check for the readonly collection. Then a simple is comparsion will let you know. Also reflection seems unncessary.

A man said to the universe:
"Sir I exist!"
"However," replied the Universe, "The fact has not created in me A sense of obligation."

-- Stephen Crane

Re: Using C# .NET 2 and Generic ReadOnly Collections

satvinder12345679-Jul-06 12:07

satvinder1234567

9-Jul-06 12:07

Cheers Guys, hadn't thought of that, What is beneifit of using the XMLSerilizer method as against using a Interface.

Satvinder

SendKeys problem

psyonara7-Jul-06 4:12

psyonara

7-Jul-06 4:12

I am using the SendKeys class to switch to a browser and enter login details. This works fine in IE, but in Firefox, the letters are each typed twice (e.g. jjoohhnn), and Tab and Enter don't seem to work correctly.

The right window has the focus, because something is being entered, but not correctly, at least not in Firefox.

I use:
SendKeys.Send("john{TAB}doe{ENTER}");

Is this a problem with the code, or might Firefox be at fault?
Can anyone help?

Thanks!

Re: SendKeys problem

Judah Gabriel Himango7-Jul-06 4:42

Judah Gabriel Himango

7-Jul-06 4:42

I've had similar problems with SendKeys; generally it doesn't seem to work too well. I was able to get around some issues by doing different things with Send, SendWait, and adding an Application.DoEvents call after the Send.

In other words, I've found SendKeys to be unreliable. I suggest you look into sending window messages via the Win32 SendMessage API.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Messianic Instrumentals (with audio)
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

date format in different countries ? help pls...

cmpeng347-Jul-06 4:07

cmpeng34

7-Jul-06 4:07

hi all,
my operating system is english. and its date format is mm/dd/yy. but in turkish normal date format is: dd/mm/yy.
i wrote a code which stores some datas.
but if i search for some data in database according to date, it gives errors on computers which has turkish operating system.
the only solution is to change date format of such computers to english(us).
but do i have to do that ?

cant i do any trick so that it makes my program run on any computers (which has english or turkish operating systems )?

help please,
thanks in advance,
bye.

Re: date format in different countries ? help pls...

Not Active7-Jul-06 4:15

Not Active

7-Jul-06 4:15

Use UTC format for dates in the database and searching

Re: date format in different countries ? help pls...

Dustin Metzgar7-Jul-06 4:17

Dustin Metzgar

7-Jul-06 4:17

You should try using the current culture to get your date format. When converting a DateTime, you should do it using a particular culture. You can use System.Globalization.CultureInfo.CurrentCulture to determine the culture settings of the computer that the program is running on. Also, when you call Parse on a DateTime, use the IFormatProvider: http://msdn2.microsoft.com/en-us/library/kc8s65zs.aspx[^]

Logifusion[^]

fmardani7-Jul-06 3:46

fmardani

7-Jul-06 3:46

Hi,
What is the difference between the following two lines?
string strTest = "";
string strTest = @"";

Thanks

Re: @

AETaylor7-Jul-06 3:51

AETaylor

7-Jul-06 3:51

Absolutely nothing. @ is only required to prevent escape characters from being interpreted.

Re: @

Not Active7-Jul-06 3:55

Not Active

7-Jul-06 3:55

Using the @ symbol allows you to do this

string strTest = @"C:\Program Files\MyApp";

rather than

string strTest = "C:\\Program Files\\MyApp";

Re: @

Dustin Metzgar7-Jul-06 4:10

Dustin Metzgar

7-Jul-06 4:10

It also allows you to do this:

string s = @"Well, maybe it's
better if you pick up a book
on C#.  You'll get quick answers
on the forum, but they won't
be complete.  And, sometimes,
they'll have some ""sarcasm"".";

Logifusion[^]

Re: @

fmardani7-Jul-06 4:12

fmardani

7-Jul-06 4:12

Thanks

timeout expired.timeout period elapsed prior to completion of the operation or the server is not responding [modified]

ayyp7-Jul-06 3:30

ayyp

7-Jul-06 3:30

hi all,when i try to access my application(which contain nearly 1000 records) it raise this error message
"timeout expired.timeout period elapsed prior to completion of the operation or the server is not responding"

i dont know what is this prob and why this is happening...any idea.....? Confused | :confused:

Regards,
ayyp

-- modified at 9:31 Friday 7th July, 2006

Re: timeout expired.timeout period elapsed prior to completion of the operation or the server is not responding

Judah Gabriel Himango7-Jul-06 4:34

Judah Gabriel Himango

7-Jul-06 4:34

Ok, you're using .NET remoting or sockets? If you're trying to bring over 1000 records in a single call, chances are it's timing out; it gives up after some period of time.

Instead of trying to bring over all 1000 records in a single call, serialize your records into a stream, then send that stream over byte-by-byte. This will be faster, more performant, and more scalable. You also shouldn't get any timeouts this way provided you don't try to stream too many bytes per call. Try streaming 65000 bytes per call, that's 65k and should work alright on high speed connections.

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: Messianic Instrumentals (with audio)
The apostle Paul, modernly speaking: Epistles of Paul

Judah Himango

Re: timeout expired.timeout period elapsed prior to completion of the operation or the server is not responding

ayyp7-Jul-06 18:41

ayyp

7-Jul-06 18:41

sorry,i dont know how to do this can u send any sample code,.......that will help me.........plz..... Smile | :)

Regards,
ayyp

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