Here's my question:
I have Windows Forms app.  Suppose the user clicks on the "Processing"
button on the UI.  The UI thread then starts processing.  During this
processing another thread calls invoke to update a control on the UI.

Unless I'm misunderstanding the pattern and it's various implementations,
Singleton effectively makes the constructor unavailable to clients. The
constructor for any given class, however, is what we otherwise use [outside
of Singleton implementations] to *require* specific ...

I am an Xtreme newbie to C# and am trying to build an array of strings.  I
get the following error and don't know what I'm doing wrong.
System.NullReferenceException: Object reference not set to an instance of an
object.

I’m not sure how to feed PCL commands (i.e. “Ec&l1S”) thru the
PrinterSettings() function, but we have been successfully using the
PrinterSetting() properties and methods to successfully call on most of the
printer’s properties.

I am working on the windows application. I created a form Form1 to list
records. I used datagridview to show data and bound it to a dataadapter. User
can click Update button in Form1 to open a new dialog window Form2 to update
selected record and also add new records. When user ...

Is it possible to set path to dll from which I import? The problem is
that if I know the path I can use it in DllImport attribute but I need
to parametrize this path (this parameter is read when application
starts). E.g.:

I'm trying to loop through the app.Config file and add the keys from
the app.Config as MenuItems on a MenuStrip. The following line blows
up...
transToolStripMenuItem.DropDownItems.AddRange(new ToolStripItem[] {

In the VS 2005 add-in I'm currently developing, I want to be able to find
out when the entire Visual Studio IDE receives and loses focus (e.g. when
the user switches to another program and back to the IDE).
I would have expected such an event to be present in DTE.DTEEvents, but it ...

I have a class 'item'  and I want to create an array of these items.
like this
ArrayList items = new ArrayList();
while (reader.read())

I wrote a Class that has 1 inherited child class
this class loads row offsets into a 1 dim long array
i can traverse the text file via rows or if delimited columns or fixed with
columns i can define a structure (array of column names, type,size, len,

I imported an Access database, created a dataset, added a
bindingsource; and have been happily coding away - couldn't be easier.
My problems started when I added a column to the database - I can't
find a way to tell Visual Studio to "resync" the imported dataset and

I am trying to use the function GetPrivateProfileString as following:
[DllImport("kernel32.dll")]
public static extern Int32 GetPrivateProfileString(string lpAppName, string
lpKeyName, string lpDefault,  string lpReturnedString, short nSize, string

In the days of VB, it was possible to do the following:  "Call
Button1_Click()", although there was some argument about whether this
was asking for trouble.
Is it possible to do it in CSharp?  The trouble that I see is that

I badly need to get a snapshot from a WebBrowser control. How can I do that?

I have a application that run as Windows Service. I also created another
Windows Form Application that manage the Service like MS SQL Server Service
Manager did. Service Manager need to know some variable value in Service,
include some massive data.