Loop to read file and exit on button click

[kaiser]

Hello. I am trying to write a program that continues to read the last
line of a txt file until a stop button is clicked.

while (ContinueLoop == true )
{
while ((LastLine = file.ReadLine() ) != null)
{
LastLine = file.ReadLine() ;
}//while readline

CurrentTime = DateTime.Now;
lblTime.Text = CurrentTime.ToS tring();
lblCounter.Text = Counter.ToStrin g();
lblTime.Refresh ();
lblString.Refre sh();
lblCounter.Refr esh();
Application.DoE vents();
Counter++;
lblString.Text = LastLine;

} // While do until button pressed

I have two While loop, once running until a stop button is pressed, and
the other running until the end of the file is found and the last value
assigned to a variable. Problem is that the program runs fine the
first time is passes through the loop but then keeps skipping the inner
loop...I placed a watch on "file.readline( )" and, once it has completed
the first loop, it says (under the value col of the Watch window)
"function 'file.ReadLine( )' evaluated and returned null.

How can I "refresh" 'file.ReadLine( )' value so that it doesnt keep the
"null status"

Thanks!

[kaiser]

have solved my problem - sorry...for anyone elses interest the soln was
:

while (ContinueLoop == true )
{
while ((line) != null)
{
LastLine = line;
line = file.ReadLine() ;

}//while readline

CurrentTime = DateTime.Now;
lblTime.Text = CurrentTime.ToS tring();
lblCounter.Text = Counter.ToStrin g();
lblTime.Refresh ();
lblString.Refre sh();
lblCounter.Refr esh();
Application.DoE vents();
Counter++;
lblString.Text = LastLine;
file.Close();
} // While do until button pressed
}