AllowDrag constrained to changes of Y-values

[User (Legacy)]

Hello,

If I create a Line chart without specifying X-coordinates, AllowDrag is 

constrained to changes of Y-values, and this is reflected by the SizeNS 

cursor; however if X-coordinates are specified, AllowDrag is unconstrained, 

and the cursor is SizeAll. Ideally, I would like to allow users to change 

Y-values while keeping X-values fixed, even though the chart may have 

unevenly distributed X-values. Is there some means of achieving this? 

Turning AllowDrag off and overriding the control's behaviour using mouse 

events and coordinate transformations seems a wee bit hairy.

Many thanks (and my apologies if there's an AllowDrag.YOnly property I 

missed!)

[Software FX]

The way to achieve what you want is by processing the DataChangedByUser 

event as follows:

private void chart1_DataChangedByUser (object sender,PointLabelEventArgs e) 

{

    if (e.Axis == chart1.AxisX)

        e.Handled = true; // Prevent change of X-Axis values

}

-- 

Francisco Padron

www.chartfx.com