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tx, interesting. Btw, the problem is fixed, I did set the Form.Enabled to false (typo in code, was supposed to be for anothe control).
--------
"I say no to drugs, but they don't listen."
- Marilyn Manson
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Form.Enabled was set to false. A mistake made selecting wrong item in Intellisense 
--------
"I say no to drugs, but they don't listen."
- Marilyn Manson
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I have an array (List<t>) containing tens of thousands of items. I need to maintain copies of the array, sorted in a few different ways. I'm working on Windows Mobile so memory is a constraint. To minimize memory requirements, in C++, I can have arrays of pointers to the first array (T*[]). I understand I can do this in C# as well, but the code is unsafe. Is there a better way of doing this in C#
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This should work also, because objects variables are in fact references to instances of classes, not the instances themselves, thus all arrays have the same instance reference:
object o1 = new Object();
object[] oa1 = new object[] { o1 };
object[] oa2 = new object[] { o1 };
both arrays have reference to the exact same object.
--------
"I say no to drugs, but they don't listen."
- Marilyn Manson
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Thanks for your reply, Michel. Does it work the same way with the generic List as well?
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It works for all class types. struct types are passed by value, as well as primitive types
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"I say no to drugs, but they don't listen."
- Marilyn Manson
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<br />
namespace ListRef<br />
{<br />
class Person<br />
{<br />
public string name;<br />
public int id;<br />
<br />
public Person(string name, int id)<br />
{<br />
this.name = name;<br />
this.id = id;<br />
}<br />
}<br />
<br />
class Program<br />
{<br />
static void Print(List<Person> l, string s)<br />
{<br />
int i=0;<br />
System.Console.WriteLine("\n --- {0}: --- ", s);<br />
foreach(Person p in l)<br />
{<br />
System.Console.WriteLine("{0} {1} {2}", i, p.id, p.name);<br />
i++;<br />
}<br />
}<br />
<br />
static void Main(string[] args)<br />
{<br />
List<Person> a = new List<Person>();<br />
a.Add( new Person("jon", 1) );<br />
a.Add( new Person("mary", 2) );<br />
a.Add( new Person("hill", 3) );<br />
<br />
List<Person> b = new List<Person>(a);<br />
List<Person> c = new List<Person>();<br />
<br />
Person[] x = new Person[] { new Person("abe", 5), new Person("jim", 6) };<br />
<br />
a.AddRange(x);<br />
<br />
c.AddRange(a);<br />
<br />
Print(a, "a");<br />
Print(b, "b");<br />
Print(c, "c");<br />
<br />
c[4].id = 555;<br />
<br />
Print(a, "a");<br />
Print(b, "b");<br />
Print(c, "c");<br />
}<br />
}<br />
}<br />
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Hi all,
I have an outlook addin which creates a Menubar in the Outlook explorer.There are 2 buttons in the explorer, when i click the buttons ,windows forms open. I have not faced any problem till this stage.But my problem arises when i try to move the form, i get distorted images of the form.Is there any way to avoid this.I have also tried making the outlook as parent form with the various APIs like SetWindowPos,ShowWindow etc.Your help is highly appreciated.
Thx in advance
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Hi
I'm currently working on quite a big project and the need for a new custom control has come to our attention. What i´m looking for is a control that should be a combination of a textbox and a dropdownlist in the sense that i want to give the users the possibility to either select an item from the list or enter one themselves.
Is there such a control or does anyone have any ideas on how to make one..not new to custom controls just not keane on waisting time starting from scratch if someone allready knows of a good way..
Any ideas are helpful
Thanks 
Henrik
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Hey,
the standard ComboBox already has this functionality in .NET 2.0.
So there should be no reason to write a custom control for this behavior.
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To my knowledge i doesn't have it, but please let me know what properties in the
existing dropdownlist that set this behavior..
Henrik
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The standard ComboBox has always had this ability as long as Windows have had ComboBoxes. In fact, it is the default behavior.
The ComboBox has a property called DropDownStyle. Options are Simple, DropDown, and DropDownList. Simple makes it act like a TextBox, DropDownList restrict it to a DropDownList only (no typing in the box), and DropDown has both the Dropdown, and text edit.
Since you believe it is not already present, I wonder if what you really want is for the text entered by the user to be added to the dropdown list? If so, you would need to add code to do this. I would recommend having an "Add" button, which would add the value of ComboBox1.text to ComboBox1.items (with some code to make sure that the item is not already in the list).
Roy.
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Ok yeah that is true, sorry but i probably should have been more explicit in what i was looking for. What i forgot to mention is that i'm working on a web project so thats why i can't use the ComboBox youre suggesting. So what i'm looking for is a way to change a the webcontrol DropDownList to behave like a standard WinForm ComboBox.
Thanks for youre replies though. 
Henrik
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I read that ulong is not CLS compliant, but this code compiles cleanly on .NET 2.0. Any idea why? Was my source wrong?
using System;
[assembly:CLSCompliant(true)]
namespace CustomAttributes
{
[CLSCompliant(true)]
public class MarutiZen
{
decimal price;
public ulong MyULong;
public MarutiZen()
{
}
}
}
Thanks in advance.
Cheers,
Vikram.
"When I read in books about a "base class", I figured this was the class that was at the bottom of the inheritence tree. It's the "base", right? Like the base of a pyramid." - Marc Clifton.
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Vikram A Punathambekar wrote: using System;[assembly:CLSCompliant(true)]namespace CustomAttributes{ [CLSCompliant(true)] public class MarutiZen { decimal price; public ulong MyULong; public MarutiZen() { } }}
I get a compiler warning saying, "Type of 'TestingApp.Form1.MarutiZen.MyULong' is not CLS-compliant".
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Thanks, Judah. Ok, I didn't look carefully enough. There's indeed a warning, but the documentation says I should get an error. 
Cheers,
Vikram.
"When I read in books about a "base class", I figured this was the class that was at the bottom of the inheritence tree. It's the "base", right? Like the base of a pyramid." - Marc Clifton.
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Hmm. Maybe if you turn on "warnings as errors"? Sometimes MSDN doco isn't quite on top of things, so it seems.
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Judah Himango wrote: Maybe if you turn on "warnings as errors"?
Yup, I know about that flag, but then the documentation should say "...you will get a warning, which you can promote to an error with a compiler flag". 
Judah Himango wrote: Sometimes MSDN doco isn't quite on top of things, so it seems.
Sadly, I was referring to Troelsen. A quick search on Google for ulong clscompliant generates tons of results. Yet....
Cheers,
Vikram.
"When I read in books about a "base class", I figured this was the class that was at the bottom of the inheritence tree. It's the "base", right? Like the base of a pyramid." - Marc Clifton.
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I'm passing a format string to do the truncation. It's not always working though. THe first problem is that for 0<d<1 it="" does="" not="" put="" a="" leading="" zero,="" which="" is="" cosmetic="" annoyance.="" more="" seriously="" though="" for="" d="0," returns="" ""="" "0"="" or="" "0.0".="" the="" same="" thing="" happens="" d<.0001,="" should="" be="" truncated="" to="" 0.
is="" there="" different="" charater="" i="" can="" pass="" that="" will="" return="" zero="" instead="" of="" null?="" i'd="" prefer="" do="" my="" rounding="" truncation="" during="" output="" rather="" than="" artimatically="" and="" gamble="" any="" remaining="" error="" remains="" small="" enough="" default="" tostring()="" eats="" every="" time.
<code="">
d = 0.001;
s = d.ToString();
s= d.ToString("########.####");
d = 0.000001;
s = d.ToString();
s= d.ToString("########.####");
double d = 0.0;
s = d.ToString();
s= d.ToString("########.####");
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Dan,
If you want a leading 0 to appear ONLY when the double's integer part is 0, put a 0 between the last hash in the integer part and the decimal point.
double d;
string s;
d = 0.001;
s = d.ToString();
Console.WriteLine(s);
s= d.ToString("########0.####");
Console.WriteLine(s);
produces the output
0.001
0.001
For the special case of 0.0, you will have to add an extra zero between the decimal point and the first hash of the fractional part. Your format string now looks like
"########0.0####"
Now, the output of
using System;
class Foo
{
public static int Main(string[] args)
{
double d;
string s;
d = 0.120;
s= d.ToString("########0.0####");
Console.WriteLine(s);
d = 0.0;
s= d.ToString("########0.0####");
Console.WriteLine(s);
return 0;
}
}
will be
0.12
0.0
I hope that answers your question, and thanks for making me learn something today.  However, please check the code yourself because it's 8:45 PM here and I did this in a hurry.
PS: Let me know if I was right.
Cheers,
Vikram.
"When I read in books about a "base class", I figured this was the class that was at the bottom of the inheritence tree. It's the "base", right? Like the base of a pyramid." - Marc Clifton.
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Vikram A Punathambekar wrote: I hope that answers your question, and thanks for making me learn something today. However, please check the code yourself because it's 8:45 PM here and I did this in a hurry.
PS: Let me know if I was right.
This appears to be doing everything I need. Thank you.
PS did you trial and error this, or find something explaining it online? I tried googling last week, but could only find the predefined, 'named' format strings and a single example with the ###.### format, but not any of the other control chars used in formatting.
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dan neely wrote: did you trial and error this, or find something explaining it online?
Trial and error.  My first try was to put a leading zero. Unfortunately, it returned numbers like 023.4, so I tried putting it at the end. Voila! After that, it didn't take too many brain cycles to figure out I should put a zero after the decimal point for the fractional part.
Cheers,
Vikram.
"When I read in books about a "base class", I figured this was the class that was at the bottom of the inheritence tree. It's the "base", right? Like the base of a pyramid." - Marc Clifton.
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This one has confounded me, so I guess I'm not putting the correct terms into the search engine.
We have recently upgraded a server from Windows 2000 to Windows 2003 Advanced Server. After the initial problems of getting ASP.NET working under the new improved security model the problems continue.
Part of the system sends batch jobs off to the Windows Task Scheduler. Some jobs are running okay (but they are not .NET applications), however all the .NET applications seem to be having problems running through the task scheduler. The first sign of a problem was one application that failed instantly before it even got as far as creating its log file (which is more or less the first thing each of these applications do). Other jobs just sat in the task scheduler with a status of running. (I should add that they also should have failed instantly becuase I tell it to use an input file that doesn't exist, but they should have produced a log file) Meanwhile the Event Log had two error messages:
The application-specific permission settings do not grant Local Activation permission for
the COM Server application with CLSID {73B25FFD-F501-437B-8B11-7F0DE383964F} to the user
DOMAIN\user_account SID (S-x-x-xx-xxxxxxxxx-xxxxxxxxxx-xxxxxxxxx-xxxx).
This security permission can be modified using the Component Services administrative tool.After some searching on the internet I found that it refers to the Debugger. So I added the user to the Debuggers group. And now all I get is one information message in the event log.
Application popup: JIT Debugging :
JIT Debugging failed with the following error: 0x800405a6
Please check the documentation topic 'Just-in-time debugging errors' for more information. Well, the problem is that I cannot find a document that refers to .NET 1.1. I did find some blogs and forum posts that bemoaning the fact that the documentation was crap.
Does anyone have any ideas?
Summary:
Migration from Windows 2000 Server to Windows 2003 Advanced Server
.NET 1.1
The server also acts as a domain controller
ColinMackay.net
Scottish Developers are looking for speakers for user group sessions over the next few months. Do you want to know more?
-- modified at 9:47 Tuesday 21st February, 2006
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I can successfully capture the ENTER key that a user presses in a combo box, but my desktop always plays a "ding" when the ENTER key is pressed - as if the key is not valid in the context of a combo box. Does anyone know how to prevent this annoying ding from being played?
Darryl Borden
Principal IT Analyst
dborden@eprod.com
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how to pass a textbox value into the report in c#
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