Filling a Dataset and Dataset.WriteXML method..

[Serdar C]

hello there, i am writing a program that generates random numbers and shows
the numbers on a (x,y) chart.. i decided to use crystal reports to draw the
chart and a dataset.readxml to read data..
my problem is when i try to fil the dataset manually and type
dataset.writexml i find that theres nothing written on the xml file.. heres
the code i wrote.. please help me in this situation...

in form_load:

-----------------------------------------

ds = new DataSet();

ds.Tables.Add("numbers");

DataColumn dc = new DataColumn("number",Type.GetType("System.String")) ;

ds.Tables["numbers"].Columns.Add(dc);

-----------------------------------------

random number gneration and storing in dataset:

-----------------------------------------

Random r = new Random();

DataRow dr;

dr = ds.Tables[0].NewRow();

dr["numbers"] = r.NextDouble().ToString("0.#");

-----------------------------------------

and finally writing data to an xml file..

-----------------------------------------

ds.Tables[0].AcceptChanges();

ds.AcceptChanges();

ds.WriteXml("c:\\numbers.xml");

-----------------------------------------

thanx for spending your time on reading my post and have a nive year :)

p.s: visual basic 6.0 used to have a control for creating charts and i think
it was easier to use than crystal reports.. if u know a control in c# that i
can use please let me know..

[Sahil Malik]

I don't see a dt.Rows.Add in your code. Even though you do a NewRow, the row
is still detached.

- Sahil Malik
http://dotnetjunkies.com/weblog/sahilmalik
"Serdar C" <se*****@interaktif.gen.tr> wrote in message
news:u2**************@TK2MSFTNGP12.phx.gbl...

hello there, i am writing a program that generates random numbers and
shows
the numbers on a (x,y) chart.. i decided to use crystal reports to draw
the
chart and a dataset.readxml to read data..
my problem is when i try to fil the dataset manually and type
dataset.writexml i find that theres nothing written on the xml file..
heres
the code i wrote.. please help me in this situation...

in form_load:

-----------------------------------------

ds = new DataSet();

ds.Tables.Add("numbers");

DataColumn dc = new DataColumn("number",Type.GetType("System.String")) ;

ds.Tables["numbers"].Columns.Add(dc);

-----------------------------------------

random number gneration and storing in dataset:

-----------------------------------------

Random r = new Random();

DataRow dr;

dr = ds.Tables[0].NewRow();

dr["numbers"] = r.NextDouble().ToString("0.#");

-----------------------------------------

and finally writing data to an xml file..

-----------------------------------------

ds.Tables[0].AcceptChanges();

ds.AcceptChanges();

ds.WriteXml("c:\\numbers.xml");

-----------------------------------------

thanx for spending your time on reading my post and have a nive year :)

p.s: visual basic 6.0 used to have a control for creating charts and i
think
it was easier to use than crystal reports.. if u know a control in c# that
i
can use please let me know..

[Serdar C]

it works now thank you so much.
"Sahil Malik" <co*****************@nospam.com> wrote in message
news:ON**************@TK2MSFTNGP11.phx.gbl...

I don't see a dt.Rows.Add in your code. Even though you do a NewRow, the row is still detached.

- Sahil Malik
http://dotnetjunkies.com/weblog/sahilmalik
"Serdar C" <se*****@interaktif.gen.tr> wrote in message
news:u2**************@TK2MSFTNGP12.phx.gbl...

hello there, i am writing a program that generates random numbers and
shows
the numbers on a (x,y) chart.. i decided to use crystal reports to draw
the
chart and a dataset.readxml to read data..
my problem is when i try to fil the dataset manually and type
dataset.writexml i find that theres nothing written on the xml file..
heres
the code i wrote.. please help me in this situation...

in form_load:

-----------------------------------------

ds = new DataSet();

ds.Tables.Add("numbers");

DataColumn dc = new DataColumn("number",Type.GetType("System.String")) ;

ds.Tables["numbers"].Columns.Add(dc);

-----------------------------------------

random number gneration and storing in dataset:

-----------------------------------------

Random r = new Random();

DataRow dr;

dr = ds.Tables[0].NewRow();

dr["numbers"] = r.NextDouble().ToString("0.#");

-----------------------------------------

and finally writing data to an xml file..

-----------------------------------------

ds.Tables[0].AcceptChanges();

ds.AcceptChanges();

ds.WriteXml("c:\\numbers.xml");

-----------------------------------------

thanx for spending your time on reading my post and have a nive year :)

p.s: visual basic 6.0 used to have a control for creating charts and i
think
it was easier to use than crystal reports.. if u know a control in c# that i
can use please let me know..

[Sahil Malik]

Awesome !! :)
"Serdar C" <se*****@interaktif.gen.tr> wrote in message
news:eL**************@TK2MSFTNGP09.phx.gbl...

it works now thank you so much.
"Sahil Malik" <co*****************@nospam.com> wrote in message
news:ON**************@TK2MSFTNGP11.phx.gbl...

I don't see a dt.Rows.Add in your code. Even though you do a NewRow, the

row

is still detached.

- Sahil Malik
http://dotnetjunkies.com/weblog/sahilmalik
"Serdar C" <se*****@interaktif.gen.tr> wrote in message
news:u2**************@TK2MSFTNGP12.phx.gbl...

> hello there, i am writing a program that generates random numbers and
> shows
> the numbers on a (x,y) chart.. i decided to use crystal reports to draw
> the
> chart and a dataset.readxml to read data..
> my problem is when i try to fil the dataset manually and type
> dataset.writexml i find that theres nothing written on the xml file..
> heres
> the code i wrote.. please help me in this situation...
>
> in form_load:
>
> -----------------------------------------
>
> ds = new DataSet();
>
> ds.Tables.Add("numbers");
>
> DataColumn dc = new DataColumn("number",Type.GetType("System.String")) ;
>
> ds.Tables["numbers"].Columns.Add(dc);
>
> -----------------------------------------
>
> random number gneration and storing in dataset:
>
> -----------------------------------------
>
> Random r = new Random();
>
> DataRow dr;
>
> dr = ds.Tables[0].NewRow();
>
> dr["numbers"] = r.NextDouble().ToString("0.#");
>
> -----------------------------------------
>
> and finally writing data to an xml file..
>
> -----------------------------------------
>
> ds.Tables[0].AcceptChanges();
>
> ds.AcceptChanges();
>
> ds.WriteXml("c:\\numbers.xml");
>
> -----------------------------------------
>
>
>
> thanx for spending your time on reading my post and have a nive year :)
>
> p.s: visual basic 6.0 used to have a control for creating charts and i
> think
> it was easier to use than crystal reports.. if u know a control in c# that > i
> can use please let me know..
>
>