Hi Copilot,
Help resources
We have:
- User's Manual in Support http://arction.com/support. The Manual explains what kind of objects LightningChart has and describes the most important features with pictures. The manual also install in the hard drive.
- Help files (API description). You can find it in the Action program group from your start menu. It shows it in the Microsoft Help Viewer window.
- Help file and Users Manual in start menu
- Help file and manual.PNG (104.02 KiB) Viewed 13421 times
- Hundreds of examples
- Forums which you are already found
- Support by e-mail, please don't hesitate to contact us
Formatting X axis labels
To format X axis labels, you can disable automatic formatting by:
_chart.ViewXY.XAxes[0].AutoFormatLabels = false;
Then set
_chart.ViewXY.XAxes[0].LabelsTimeFormat property, based on your preference. Standard .NET formatting applies there, see Double.ToString and DateTime.ToString formatting commands.
Or alternatively set FormatValueLabel event handler for the axis, and convert each value to string there.
Defining bands with mouse
Use mouse event handlers, to create a Band, and update it's ValueBegin and ValueEnd.
Code: Select all
//Disable zooming
_chart.ViewXY.ZoomPanOptions.LeftMouseButtonAction = MouseButtonAction.None;
//Subscribe to mouse event handlers
_chart.PreviewMouseDown += _chart_PreviewMouseDown;
_chart.PreviewMouseMove += _chart_PreviewMouseMove;
_chart.PreviewMouseUp += _chart_PreviewMouseUp;
Code: Select all
private double _bandStart = 0;
private Band _bandUnderPainting = null;
void _chart_PreviewMouseDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
//Start band painting
_chart.BeginUpdate();
AxisX xAxis = _chart.ViewXY.XAxes[0];
Point mousePos = e.GetPosition(_chart);
xAxis.CoordToValue((int)mousePos.X, out _bandStart, false, true);
Band b = new Band(_chart.ViewXY, xAxis, _chart.ViewXY.YAxes[0]);
b.Binding = AxisBinding.XAxis;
b.ValueBegin = _bandStart;
b.ValueEnd = _bandStart;
b.MouseInteraction = false;
_chart.ViewXY.Bands.Add(b);
_bandUnderPainting = b;
_chart.EndUpdate();
}
void _chart_PreviewMouseMove(object sender, System.Windows.Input.MouseEventArgs e)
{
//Update band end value
if (_bandUnderPainting == null)
return;
_chart.BeginUpdate();
AxisX xAxis = _chart.ViewXY.XAxes[0];
Point mousePos = e.GetPosition(_chart);
double bandStop;
//Convert mouse position into X axis Value.
xAxis.CoordToValue((int)mousePos.X, out bandStop, false, true);
_bandUnderPainting.ValueEnd = bandStop;
_chart.EndUpdate();
}
void _chart_PreviewMouseUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
//Stop painting
if (_bandUnderPainting == null)
return;
_bandUnderPainting.MouseInteraction = true;
_bandUnderPainting = null;
}
Like this, a Band appears in the chart when you press mouse down, band updates while you are dragging the mouse, and stops defining the Band when you release the mouse button. Is this a working solution for you?
