How do interfaces help us achieve separation or reduce dependencies between
classes?
Suppose I have a "PersonPresenter" class and want to enable its data to be
editable in a Form. I have read that, in order to separate the UI from the

I'm trying to create a table in a sql database.
When I run
ExecuteNonQuery();
I get an error "Objects must implement IConvertible".

so that when a user clicks or double clicks on a datagridview row,
private void dataGridView1_RowEnter(object sender, DataGridViewCellEventArgs
e) {}and
private void dataGridView1_CellContentClick(object sender,

All - I need a link to some examples of creating custom forms but more
specifically, how to drag them without using the forms border.  Any help is
appreciated.
Thanks,

I need to allow users to freely edit a multicolumn list. (I'm using a
ListView specifically because it can be induced to scroll when a user
"nudges" the top or bottom with the mouse.) To allow users to edit fields I
throw up a Textbox over the selected field. (The ListView has ...

i have a backgroundworker class which recursively iterates through a
directory, reading the files and folders, and using ReportProgress to
inform the UI that a new file has been read.  the Progress_Changed
method appends the filename to a textbox.

I have a panel docked to the left of the page and one docked to the bottom.  
The bottom panel is the entire length of the form and the left panel starts
above it.  I want the left panel to be the entire height of the window and
have the bottom panel start to the right of that.  ...

Please note that this question is NOT about any particular pattern - but
about the general objective of separating out presentation logic from
everything else.
I'm trying to "get a grip" on some of the patterns (e.g., Model View

When I create aplication settings using the settings editor, they are
read only. So how can I update them? :)
BTW, why they are read-only?

i have a simple form in which there are 1 sqlconnection, some
sqldataadapter and 1 dataset.
During runtime i want to read all sqldataadapter to change all
SqlSelectCommand because my table defined at designtime is "TABLE", but

I have maybe a stupid question. I have an application using windowsforms
which is programmed in an older Version of VS. Now there is the question, if
I buy the new VS2005, are there any changes to forms so that the application
does not run anymore?

Perhaps someone can give me a hint on what i have to do to get chinese
and japanese charakters displayed in my .net application.
I am using winXP and .net environment is 1.1 with latest servicepacks.
So, if i want to display chinese unicode characters in my application,

I have created a new control in VB.NET that Inherits a ListView so that I can
add some of my own functionality. One of the other things I would like to do
is change some of the appearance of the grid when it’s placed on a form in
design view. The company I work insists on Grid ...

Can anyone suggest any testing/analysing tool which can give the indepth
analysis of any dotnet application so that we can identify the
areas/processes of application which are consuming most of the system
resources (processor and memory)

I have a custom component which has a complex internal state that is serialized using CodeDom serialization. It is part of a library
used in a moderately complex project. The component has a custom design-time interface displayed within VS2003. All of the library
assemblies are ...