read multiple values from textbox are process them

[smoky_flame via DotNetMonster.com]

hi,
is it possible to take multiple values(int) seperated by commas as input from
textbox in C# and draw a figure using those values.
e.g. drawing a simple path using 1,2,3,4 values.

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[Peter Duniho]

Re: read multiple values from textbox are process them

On Sat, 15 Mar 2008 11:42:57 -0700, smoky_flame via DotNetMonster.c om
<u42139@uwewrot e:

hi,
is it possible to take multiple values(int) seperated by commas as input
from
textbox in C# and draw a figure using those values.
e.g. drawing a simple path using 1,2,3,4 values.

Yes, it's possible. As long as you can clearly and precisely define the
problem, there is a solution.

As stated so far, though, I don't think there is one. The biggest problem
is that "drawing a simple path using 1,2,3,4 values" is too vague. How
are the values supposed to be interpreted with respect to describing a
"simple path"?

You can use String.Split() or other mechanisms to separate a single string
that might be contained in a TextBox into individual parts, and of course
you can then use int.TryParse() to parse those parts into numbers. But
then what? How do you expect to use the numbers?

Pete

[smoky_flame via DotNetMonster.com]

Re: read multiple values from textbox are process them

actually im taking input in textboxes. ive done this with single vales as i
used:
if (TextBox4_pa.Te xt == "1")
{
p1.StartCap = LineCap.ArrowAn chor;
Gfx.DrawLine(p1 ,200,140,76,80) ;

}
if (TextBox4_pa.Te xt == "2")
{
p1.StartCap = LineCap.ArrowAn chor;
Gfx.DrawLine(p1 , 210, 140, 190, 50);

}
if (TextBox4_pa.Te xt == "3")
{
p1.StartCap = LineCap.ArrowAn chor;
Gfx.DrawLine(p1 , 210, 140, 160, 110);

}



but i cant do it with values in the textbox like 1,2,3 ....any coding
suggestions or help.?

Jon Skeet [C# MVP] wrote:

>is it possible to take multiple values(int) seperated by commas as input from
>textbox in C# and draw a figure using those values.
>e.g. drawing a simple path using 1,2,3,4 values.

>
>Yes, certainly. Which bit are you having trouble with? Split the job
>into several small tasks, and focus on one at a time. If you have a
>problem with one particular task, I suggest you ask about that task in
>isolation.
>

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[smoky_flame via DotNetMonster.com]

Re: read multiple values from textbox are process them

actually im taking input in textboxes. ive done this with single vales as i
used:
if (TextBox4_pa.Te xt == "1")
{
p1.StartCap = LineCap.ArrowAn chor;
Gfx.DrawLine(p1 ,200,140,76,80) ;

}
if (TextBox4_pa.Te xt == "2")
{
p1.StartCap = LineCap.ArrowAn chor;
Gfx.DrawLine(p1 , 210, 140, 190, 50);

}
if (TextBox4_pa.Te xt == "3")
{
p1.StartCap = LineCap.ArrowAn chor;
Gfx.DrawLine(p1 , 210, 140, 160, 110);

}



but i cant do it with values in the textbox like 1,2,3 ....any coding
suggestions or help.?

Jon Skeet [C# MVP] wrote:

>is it possible to take multiple values(int) seperated by commas as input from
>textbox in C# and draw a figure using those values.
>e.g. drawing a simple path using 1,2,3,4 values.

>
>Yes, certainly. Which bit are you having trouble with? Split the job
>into several small tasks, and focus on one at a time. If you have a
>problem with one particular task, I suggest you ask about that task in
>isolation.
>

--
Message posted via http://www.dotnetmonster.com

[smoky_flame via DotNetMonster.com]

Re: read multiple values from textbox are process them

actually im taking input in textboxes. ive done this with single vales as i
used:
if (TextBox4_pa.Te xt == "1")
{
p1.StartCap = LineCap.ArrowAn chor;
Gfx.DrawLine(p1 ,200,140,76,80) ;

}
if (TextBox4_pa.Te xt == "2")
{
p1.StartCap = LineCap.ArrowAn chor;
Gfx.DrawLine(p1 , 210, 140, 190, 50);

}
if (TextBox4_pa.Te xt == "3")
{
p1.StartCap = LineCap.ArrowAn chor;
Gfx.DrawLine(p1 , 210, 140, 160, 110);

}



but i cant do it with values in the textbox like 1,2,3 ....any coding
suggestions or help.?

Jon Skeet [C# MVP] wrote:

>is it possible to take multiple values(int) seperated by commas as input from
>textbox in C# and draw a figure using those values.
>e.g. drawing a simple path using 1,2,3,4 values.

>
>Yes, certainly. Which bit are you having trouble with? Split the job
>into several small tasks, and focus on one at a time. If you have a
>problem with one particular task, I suggest you ask about that task in
>isolation.
>

--
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http://www.dotnetmonster.com/Uwe/Forums.aspx/dotnet-csharp/200803/1

[smoky_flame via DotNetMonster.com]

Re: read multiple values from textbox are process them

im going to do what u said. kindly make me clear he 5th point.

Jon Skeet [C# MVP] wrote:

>actually im taking input in textboxes. ive done this with single vales as i
>used:

>[quoted text clipped - 19 lines]

>but i cant do it with values in the textbox like 1,2,3 ....any coding
>suggestions or help.?

>
>Well, the way I would split the job up is:
>
>1) Obtaining the text from the TextBox (use the Text property)
>2) Split the string by commas (use String.Split)
>3) Potentially trim each string (use String.Trim)
>4) Parse each string (use int.TryParse)
>5) Handle each integer (I suspect you should aim for more general
code than the above, e.g. a map or array from number to line
points)
>

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[smoky_flame via DotNetMonster.com]

Re: read multiple values from textbox are process them

ive used string.split and it delimited th commas.
but how can i used GDI+ with it?
Jon Skeet [C# MVP] wrote:

>im going to do what u said. kindly make me clear he 5th point.

>
>Well, your previously posted code has several "if" blocks, with the
>same code in each apart from some different numbers.
>
>Encapsulate those numbers in a type, and then you can have an array (or
>a Dictionary<int, YourNewType>) so that you don't need if/else - just
>use the parsed number to get at the set of numbers directly.
>

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[Peter Duniho]

Re: read multiple values from textbox are process them

On Sun, 16 Mar 2008 00:20:41 -0700, smoky_flame via DotNetMonster.c om
<u42139@uwewrot e:

im going to do what u said. kindly make me clear he 5th point.

As an example of one possible implementation of "the 5th point":

Instead of all those if() statements you posted in previous code, you
could encapsulate that information as an array:

Point[][] pointPairs = { { new Point(0, 0), new Point(200, 140) },
{ new Point(200, 140), new Point(76, 80) },
{ new Point(210, 140), new Point(190, 50) },
{ new Point(210, 140), new Point(160, 110)}
};

Then you can draw the lines like this:

int ipair;

if (int.TryParse(T extBox4_pa.Text , out ipair))
{
Point[] pointPair = pointPairs[ipair];

p1.StartCap = LineCap.ArrowAn chor;
Gfx.DrawLine(p1 , pointPair[0], pointPair[1]);
}
else
{
// handle error
}

Of course, in your actual code you'd also incorporate the splitting
technique described, presumably in a loop where you process all of the
resulting strings.

Pete

[Martin Bonner]

Re: read multiple values from textbox are process them

On Mar 15, 7:14 pm, "Peter Duniho" <NpOeStPe...@nn owslpianmk.com>
wrote:

On Sat, 15 Mar 2008 11:42:57 -0700, smoky_flame via DotNetMonster.c om
>
<u42139@uwewrot e:

hi,
is it possible to take multiple values(int) seperated by commas as input
from textbox in C# and draw a figure using those values.
e.g. drawing a simple path using 1,2,3,4 values.

>
Yes, it's possible.

Agreed

As long as you can clearly and precisely define the
problem, there is a solution.

Not necessarily. Counter example: "Specify an algorithm to decide if
an arbitrary Turing machine will halt".

.... however, I agree that the OP's main problem is a lack of clarity
in the specification rather than a fundamentally insoluble problem.