scrollbar

[juli]

I have a chart with data and I want to add a scroll bar there but to
do a paging - each time I move the scroll bar to add a data (to divife
all the data untill all of it will be presented)
What is the best way to do it?
Thanks a lot!

 

[Narcís Calvet]

Hello,

Yes, this can be done inserting VS.NET scroll bars to your form and using
"SetMinMax" when creating the form and when scrolling as shown below:

private void Form1_Load(object sender, System.EventArgs e) {
line1.FillSampleValues(200);
tChart1.Axes.Bottom.SetMinMax(0, 20);
}

private void hScrollBar1_Scroll(object sender,
System.Windows.Forms.ScrollEventArgs e) {
tChart1.Axes.Bottom.SetMinMax(0+hScrollBar1.Value, 20+hScrollBar1.Value);
}

After populating your series you can do:

hScrollBar1.Maximum=Convert.ToInt16(tChart1.Series[0].XValues.Maximum);

--
Best Regards,

Narcís Calvet
http://support.steema.com

"Important note: If you are a TeeChart registered customer, please post your
support questions at Steema's Support monitored Forums for customers:
http://support.steema.com for a prompter reply."

 

[Narcís Calvet]

Hello,

Yes, this can be done inserting VS.NET scroll bars to your form and using
"SetMinMax" when creating the form and when scrolling as shown below:

private void Form1_Load(object sender, System.EventArgs e) {
line1.FillSampleValues(200);
tChart1.Axes.Bottom.SetMinMax(0, 20);
}

private void hScrollBar1_Scroll(object sender,
System.Windows.Forms.ScrollEventArgs e) {
tChart1.Axes.Bottom.SetMinMax(0+hScrollBar1.Value,
20+hScrollBar1.Value);
}

After populating your series you can do:

hScrollBar1.Maximum=Convert.ToInt16(tChart1.Series[0].XValues.Maximum);

Regards,
Narcís.

 

[juli jul]

Thank u.
Did something like that but the weired thing is that I have the biggest
value X=22 and the scroll shows axis untill 33,why??(I set maximum of
the scroll to maximum value of x).
How to make it show only untill the last value of x?

 

[Narcís Calvet]

Hi Juli,

The problem is the SCrollBar.LargeChange property. Setting it to 1 and
subtract the increment you used as the axis maximum to the ScrollBar.Maximum
as shown below.

int ScrollIncrement=25;
this.tChart1.Axes.Bottom.SetMinMax(0,ScrollIncrement);
this.hScrollBar1.LargeChange = 1;
this.hScrollBar1.Maximum=Convert.ToInt16(this.tChart1.Series[0].XValues.Maxi
mum)-ScrollIncrement;

Regards,
Narcís.