I know a Dictionary < TKey, TValue > does not allow duplicate keys.
System.Collections.Generic.Dictionary<Guid, Guid> test = new
System.Collections.Generic.Dictionary<Guid, Guid>();
//duplicate key

Confused about this concept.  If I define some collection class and inherit
IList, I get an error if I don't implement the interface methods.  This
makes sense.
But if I inherit from CollectionBase, I don't get this error, yet the

How do I display a Unicode character?  I tried
TextBox1.Text = new string('\u266D',1);
and also
char c = '\u266D';

I have a string (C#) which contains XML in the following format:
<entity="MyType" date="10.04.2007" furtherInformation="moreInfos">
<item name="MyName" value="MyValue"/>
<!-- hier können noch beliebig viele weitere Einträge vorkommen -->

I have a Windows Service in C# talking to a serial port and using
Remoting.
It also uses several COM objects. On server the service will
occassionally hang somewhere - the service still shows on a Task

Hello together,
I have a main form which includes a Datatoolstripmenu. From one of
these items I want to call
a Form which includes an DataGridview. I want to use this form and

Ctrl + PgDn shortcut does not work in Visual Studio 2008 Express. Is
this a bug or am I missing something??
Thanks,
Sundar

i want the user to preview the text file thats on his local drive using
document viewer object.
can anyone provide me a clue how i can turn the text into an xps document
using c sharp

I try to make a transparen for for non rectangle window, so i used a
background image for the form and set the transparent property of the form to
black but its only work when i move the color resulation of the xp os in my
computer to 16 bit per pixel, in 32 bit it dosnt work!

.NET 2.0
I'm about to create 2 input parameters for a method. These are 2 DateTime
parameters - one named "from" and another named "to"... - from and to
DateTime values...

I have DataGridView bound to my dataset through bindingsource component. My
dataset is filled on separate thread. While this thread is working I receive
"Cross-thread operation not valid" exception because bindingsource tries to
update grid cells from another thread (invoke is ...

Inserting text into a RichTextBox is a snap! >>
 textBox1.Text += "Enter string 0000\n";
 textBox1.Text += "Enter string 0001\n";
 textBox1.Text += "Enter string 0002\n";

Good Day Group,
  Recently I started a small test project in C# VS 05 for learning
purposes.  I have a class and a form.  I defined a property in a class
with get/set and create an instance of class1 on form.

Code below after some pause raise exception "waiting times operations has
expired". Why?
public static void Send(string from, string pwd, string to, string subject,
string body)

Somewhat I remember I used to be able to do sth like the the following
double[,] values = (double[,])excel_range.Value2
But it seems to be not working any more, throwing an exception "cannot
convert System.Object[,] to System.Double[,]"