1. frmCalculations. .
public delegate void FHandler(double Value, double Calculations);
public delegate void A2Handler(int Value, double Calculations);
public delegate void LDHandler(double Calculations, int Count);
Invoke BeginInvoke . , BeginInvoke .
2. .
public void FactHandler(double Value, double Calculations)
{
}
public void Fact1Handler(double Value, double Calculations)
{
}
public void Add2Handler(int Value, double Calculations)
{
}
public void LDoneHandler(double Calculations, int Count)
{
}
3. FactorialHandler FactHandler.
4. FactorialMinusHandler, Fact1Handler, AddTwoHandler, Add2Handler, LoopDoneHandler LDoneHandler.
FactorialHandler, Factorial1Handler, AddTwoHandler LoopDoneHandler . .
5. BeginInvoke. BeginInvoke (this), .
.
protected void FactorialHandler(double Value, double Calculations)
{
// BeginInvoke causes asynchronous execution to begin at the address
// specified by the delegate. Simply put, it transfers execution of
// this method back to the main thread. Any parameters required by
// the method contained at the delegate are wrapped in an object and
// passed.
this.BeginInvoke(new FHandler(FactHandler), new Object[]
{Value, Calculations});
}
protected void FactorialMinusHandler(double Value, double Calculations)
{
this.BeginInvoke(new FHandler(Fact1Handler), new Object []
{Value, Calculations});
}
protected void AddTwoHandler(int Value, double Calculations)
{
this.BeginInvoke(new A2Handler(Add2Handler), new Object[]
{Value, Calculations});
}
protected void LoopDoneHandler(double Calculations, int Count)
{
this.BeginInvoke(new LDHandler(LDoneHandler), new Object[]
{Calculations, Count});
}
, . , . , , .
6. .
7. , .
a. 10000000 .
" ". . , .
|
|
|
b. , . . . . , , 10 000 000, . .
, . , .
. , Calculator:
varTotalCalculations += 1;
varTotalAsOfNow = varTotalCalculations;
varTotalCalculations varTotalAsOfNow. frmCalculations . , . , . , . varTotalCalculations. , varTotalAsOfNow, . , . Visual C# lock, . , . lock :
lock(AnObject)
{
// Insert code that affects the object.
// Insert more code that affects the object.
// Insert more code that affects the object.
// Release the lock.
}
lock, , . AnObject. lock , , . , . , , . } .
