I have TextBox in him User enters the formula for instance Cos(x) what
compute in code of the program?

she is got text ((

many thanks

I assume you want to do evaluation of formulas in your program. There are a
few options avbl. One is to write your own evaluation using postfix algo.
This will work fine if you have a small set of functions you want to
evaluate. The other maybe to use reflection.emit to generate code for the
expression and execute it at runtime.

Rgds,
Anand M
VB.NET MVP
http://www.dotnetindia.com

"VladimirT" wrote:

> I have TextBox in him User enters the formula for instance Cos(x) what
> compute in code of the program?
>
> she is got text ((
>
> many thanks
>
>
>

melt example of the code or URL please

"Anand[MVP]" <(E-Mail Removed)> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ ×
ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ:
news:C1CCD450-4D53-4667-9249-(E-Mail Removed)...
> I assume you want to do evaluation of formulas in your program. There are
a
> few options avbl. One is to write your own evaluation using postfix algo.
> This will work fine if you have a small set of functions you want to
> evaluate. The other maybe to use reflection.emit to generate code for the
> expression and execute it at runtime.
>
> Rgds,
> Anand M
> VB.NET MVP
> http://www.dotnetindia.com
>
> "VladimirT" wrote:
>
> > I have TextBox in him User enters the formula for instance Cos(x) what
> > compute in code of the program?
> >
> > she is got text ((
> >
> > many thanks
> >
> >
> >

"VladimirT" <(E-Mail Removed)> wrote in news:#jFKNp30EHA.1204
@TK2MSFTNGP10.phx.gbl:

> I have TextBox in him User enters the formula for instance Cos(x) what
> compute in code of the program?
>
> she is got text ((
>
> many thanks


What you wrote doesn't make very much sense...

But you can go:

txtBoxValue.text = Cstr(Cos(Cint(txtCos.text)))


--
Lucas Tam ((E-Mail Removed))
Please delete "REMOVE" from the e-mail address when replying.
http://members.ebay.com/aboutme/coolspot18/

my code

Function FunctionEval(ByVal X As Double) As Double

Try

FunctionEval = Cos(X * 10)

'FunctionEval = txtFunction.Text?????? I want here to take from textbox as?

Catch exc As Exception

Console.WriteLine(exc.Message)

End Try

End Function

"VladimirT" <(E-Mail Removed)> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ:
news:(E-Mail Removed)...
> melt example of the code or URL please
>
> "Anand[MVP]" <(E-Mail Removed)> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ ×
> ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ:
> news:C1CCD450-4D53-4667-9249-(E-Mail Removed)...
> > I assume you want to do evaluation of formulas in your program. There
are
> a
> > few options avbl. One is to write your own evaluation using postfix
algo.
> > This will work fine if you have a small set of functions you want to
> > evaluate. The other maybe to use reflection.emit to generate code for
the
> > expression and execute it at runtime.
> >
> > Rgds,
> > Anand M
> > VB.NET MVP
> > http://www.dotnetindia.com
> >
> > "VladimirT" wrote:
> >
> > > I have TextBox in him User enters the formula for instance Cos(x) what
> > > compute in code of the program?
> > >
> > > she is got text ((
> > >
> > > many thanks
> > >
> > >
> > >
>
>

my code

Function FunctionEval(ByVal X As Double) As Double

Try

FunctionEval = Cos(X * 10)

'FunctionEval = txtFunction.Text?????? I want here to take from textbox as?
I it is necessary for ÎÁÚÎÙÈ function sin,cos,tg,ctg



Catch exc As Exception

Console.WriteLine(exc.Message)

End Try

End Function


"Lucas Tam" <(E-Mail Removed)> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ:
news:Xns95AD10824C250nntprogerscom@140.99.99.130...
> "VladimirT" <(E-Mail Removed)> wrote in news:#jFKNp30EHA.1204
> @TK2MSFTNGP10.phx.gbl:
>
> > I have TextBox in him User enters the formula for instance Cos(x) what
> > compute in code of the program?
> >
> > she is got text ((
> >
> > many thanks
>
>
> What you wrote doesn't make very much sense...
>
> But you can go:
>
> txtBoxValue.text = Cstr(Cos(Cint(txtCos.text)))
>
>
> --
> Lucas Tam ((E-Mail Removed))
> Please delete "REMOVE" from the e-mail address when replying.
> http://members.ebay.com/aboutme/coolspot18/

Vladimir,

Still not tried by me.

\\\Eval by Nigel Amstrong
1. Create a file called: DynamicMath.js
2. Add this code to it:

class DynamicMath
{
static function Eval(MathExpression : String) : double
{
return eval(MathExpression);

};
}
3. Compile it with the command line jsc compiler: jsc /t:library
DynamicMath.js
4. Add a reference to DynamicMath.dll to your project (and to
Microsoft.JScript.dll as well)
5. Use from your favourite .NET language:
Dim d As Double = DynamicMath.Eval("2 + 3 + 4")
MessageBox.Show(d)
6. That's it..
///

I hope this helps a little bit?

Cor

"VladimirT" <(E-Mail Removed)>

>
> Function FunctionEval(ByVal X As Double) As Double
>
> Try
>
> FunctionEval = Cos(X * 10)
>
> 'FunctionEval = txtFunction.Text?????? I want here to take from textbox
> as?
> I it is necessary for ÎÁÚÎÙÈ function sin,cos,tg,ctg
>
>
>
> Catch exc As Exception
>
> Console.WriteLine(exc.Message)
>
> End Try
>
> End Function
>
>
> "Lucas Tam" <(E-Mail Removed)> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ ÓÌÅÄÕÀÝÅÅ:
> news:Xns95AD10824C250nntprogerscom@140.99.99.130...
>> "VladimirT" <(E-Mail Removed)> wrote in news:#jFKNp30EHA.1204
>> @TK2MSFTNGP10.phx.gbl:
>>
>> > I have TextBox in him User enters the formula for instance Cos(x) what
>> > compute in code of the program?
>> >
>> > she is got text ((
>> >
>> > many thanks
>>
>>
>> What you wrote doesn't make very much sense...
>>
>> But you can go:
>>
>> txtBoxValue.text = Cstr(Cos(Cint(txtCos.text)))
>>
>>
>> --
>> Lucas Tam ((E-Mail Removed))
>> Please delete "REMOVE" from the e-mail address when replying.
>> http://members.ebay.com/aboutme/coolspot18/
>
>

can not create dll mistake heap (((

"Cor Ligthert" <(E-Mail Removed)> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ
ÓÌÅÄÕÀÝÅÅ: news:#(E-Mail Removed)...
> Vladimir,
>
> Still not tried by me.
>
> \\\Eval by Nigel Amstrong
> 1. Create a file called: DynamicMath.js
> 2. Add this code to it:
>
> class DynamicMath
> {
> static function Eval(MathExpression : String) : double
> {
> return eval(MathExpression);
>
> };
> }
> 3. Compile it with the command line jsc compiler: jsc /t:library
> DynamicMath.js
> 4. Add a reference to DynamicMath.dll to your project (and to
> Microsoft.JScript.dll as well)
> 5. Use from your favourite .NET language:
> Dim d As Double = DynamicMath.Eval("2 + 3 + 4")
> MessageBox.Show(d)
> 6. That's it..
> ///
>
> I hope this helps a little bit?
>
> Cor
>
> "VladimirT" <(E-Mail Removed)>
>
> >
> > Function FunctionEval(ByVal X As Double) As Double
> >
> > Try
> >
> > FunctionEval = Cos(X * 10)
> >
> > 'FunctionEval = txtFunction.Text?????? I want here to take from textbox
> > as?
> > I it is necessary for ÎÁÚÎÙÈ function sin,cos,tg,ctg
> >
> >
> >
> > Catch exc As Exception
> >
> > Console.WriteLine(exc.Message)
> >
> > End Try
> >
> > End Function
> >
> >
> > "Lucas Tam" <(E-Mail Removed)> ÓÏÏÂÝÉÌ/ÓÏÏÂÝÉÌÁ × ÎÏ×ÏÓÔÑÈ
ÓÌÅÄÕÀÝÅÅ:
> > news:Xns95AD10824C250nntprogerscom@140.99.99.130...
> >> "VladimirT" <(E-Mail Removed)> wrote in news:#jFKNp30EHA.1204
> >> @TK2MSFTNGP10.phx.gbl:
> >>
> >> > I have TextBox in him User enters the formula for instance Cos(x)
what
> >> > compute in code of the program?
> >> >
> >> > she is got text ((
> >> >
> >> > many thanks
> >>
> >>
> >> What you wrote doesn't make very much sense...
> >>
> >> But you can go:
> >>
> >> txtBoxValue.text = Cstr(Cos(Cint(txtCos.text)))
> >>
> >>
> >> --
> >> Lucas Tam ((E-Mail Removed))
> >> Please delete "REMOVE" from the e-mail address when replying.
> >> http://members.ebay.com/aboutme/coolspot18/
> >
> >
>
>

Try clsMathParser
http://digilander.libero.it/foxes/ma...ionsParser.htm

Jan



"VladimirT" <(E-Mail Removed)> pí¹e v diskusním pøíspìvku
news:%(E-Mail Removed)...
>I have TextBox in him User enters the formula for instance Cos(x) what
> compute in code of the program?
>
> she is got text ((
>
> many thanks
>
>