private void c1Chart1_DragDrop(object sender, System.Windows.Forms.DragEventArgs e)
{
string newLabText = e.Data.GetData(DataFormats.Text).ToString();
if (newLabText != null && newLabText.Length > 0)
{
// convert the event screen coords to client coords
// of the chart object.
Point pnt = c1Chart1.PointToClient(new Point(e.X, e.Y));
ChartGroup grp = c1Chart1.ChartGroups[0];
int s = -1, p = -1, d = -1;
// the cursor MUST be on a bar.
if (grp.CoordToDataIndex(pnt.X, pnt.Y, CoordinateFocusEnum.XandYCoord, ref s, ref p, ref d))
{
if (s >= 0 && p >= 0 && d == 0)
{
// create the label name
string labName = "barLabel_" + s.ToString() + "_" + p.ToString();
// now get the existing label or create it if necessary
C1.Win.C1Chart.Label lab = c1Chart1.ChartLabels[labName];
if (lab == null)
{
// create the label
lab = c1Chart1.ChartLabels.LabelsCollection.AddNewLabel();
lab.Name = labName;
lab.Compass = LabelCompassEnum.East;
lab.Connected = true;
lab.Offset = 10;
lab.AttachMethod = AttachMethodEnum.DataIndex;
lab.AttachMethodData.GroupIndex = 0;
lab.AttachMethodData.SeriesIndex = s;
lab.AttachMethodData.PointIndex = p;
lab.Style.BackColor = Color.Transparent;
}
lab.Text = newLabText;
lab.Visible = true;
}
}
}
}
private void c1Chart1_Click(object sender, System.EventArgs e)
{
Point p = Control.MousePosition;
// Convert to client coordinates
p = c1Chart1.PointToClient(p);
int si = -1; int d = -1;
// Find the distance
if (c1Chart1.ChartGroups[0].CoordToSeriesIndex(p.X, p.Y, PlotElementEnum.Series, ref si, ref d))
{
if (d <= 3) // if close enough
{
if (si != selectedIndex) // Another index
{
if (selectedIndex != -1)
{
// Change series color and width to the default
ChartDataSeries ds = c1Chart1.ChartGroups[0].ChartData[selectedIndex];
ds.LineStyle.Color = clrs[selectedIndex];
ds.LineStyle.Thickness = 1;
}
selectedIndex = si;
if (selectedIndex != -1)
{
// Change series color and width to indicate selection
ChartDataSeries ds = c1Chart1.ChartGroups[0].ChartData[selectedIndex];
ds.LineStyle.Color = selectionColor;
ds.LineStyle.Thickness = 2;
}
// Show status label
if (selectedIndex < 0)
{
label1.Text = "Selection: none";
}
else
{
label1.Text = "Selection: " + c1Chart1.ChartGroups[0].ChartData[selectedIndex].Label;
}
}
}
}
}
private void c1Chart1_ShowTooltip(object sender, C1.Win.C1Chart.ShowTooltipEventArgs e)
{
// Select item in combobox
if (sender.Equals(c1Chart1.Header))
{
comboBox1.SelectedItem = "Header";
}
else if (sender.Equals(c1Chart1.Footer))
{
comboBox1.SelectedItem = "Footer";
}
else if (sender.Equals(c1Chart1.ChartArea.AxisX))
{
comboBox1.SelectedItem = "X-axis";
}
else if (sender.Equals(c1Chart1.ChartArea.AxisY))
{
comboBox1.SelectedItem = "Y-axis";
}
else if (sender is ChartDataSeries)
{
// Create new tooltip text
if (c1Chart1.ToolTip.PlotElement == PlotElementEnum.Series)
{
ChartDataSeries ds = (ChartDataSeries)sender;
Point p = Control.MousePosition;
p = c1Chart1.PointToClient(p);
double x = 0, y = 0;
// Callculate data coordinates
if (ds.Group.CoordToDataCoord(p.X, p.Y, ref x, ref y))
{
e.TooltipText = string.Format("{0}\nx = {1:#.##}\ny = {2:#.##}", ds.Label, x, y);
}
else
{
e.TooltipText = "";
}
}
comboBox1.SelectedItem = "DataSeries";
}
}
