Greetings,
I'm trying to figure out how to provide the following feature to my users.
I have a bar chart which have some series, and I want to highlight selected bar after selection(by mouse click).
But the problem is that for some series (bar), I don't know how to selected correct ?
How can I achieve this? What's chart event i can use?
Do you have any suggestion?
Thanks in advance.
Selection of bar from bar chart
Re: Selection of bar from bar chart
Hello chris,
I made a simple project that I think help to solve your problem, doing a similar code as next. Please check next code works fine in your application.
I hope that will helps.
Thanks,
I made a simple project that I think help to solve your problem, doing a similar code as next. Please check next code works fine in your application.
Code: Select all
public Form1()
{
InitializeComponent();
InitializeChart();
}
Steema.TeeChart.Styles.Bar bar1;
private void InitializeChart()
{
bar1 = new Steema.TeeChart.Styles.Bar(tChart1.Chart);
bar1.FillSampleValues(5);
tChart1.ClickSeries += new Steema.TeeChart.TChart.SeriesEventHandler(tChart1_ClickSeries);
}
int series = -1;
int index = -1;
void tChart1_ClickSeries(object sender, Steema.TeeChart.Styles.Series s, int valueIndex, MouseEventArgs e)
{
if ((series != -1) && (index != -1))
{
tChart1[series].Colors[index] = tChart1[series].Color;
}
Text = s.ValueMarkText(valueIndex);
s.Colors[valueIndex] = Color.Lime;
index = valueIndex;
series = tChart1.Series.IndexOf(s);
tChart1.Refresh();
}
Thanks,
Best Regards,
Sandra Pazos / Development & Support Steema Software Avinguda Montilivi 33, 17003 Girona, Catalonia Tel: 34 972 218 797 http://www.steema.com |
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Re: Selection of bar from bar chart
Hi Chris,
As an update, you could note some problems with the colors in Sandra's example. Forcing the series to work with coloreach, you shouldn't find problems:
As an update, you could note some problems with the colors in Sandra's example. Forcing the series to work with coloreach, you shouldn't find problems:
Code: Select all
public Form1()
{
InitializeComponent();
InitializeChart();
}
Steema.TeeChart.Styles.Bar bar1, bar2, bar3;
private void InitializeChart()
{
bar1 = new Steema.TeeChart.Styles.Bar(tChart1.Chart);
bar2 = new Steema.TeeChart.Styles.Bar(tChart1.Chart);
bar3 = new Steema.TeeChart.Styles.Bar(tChart1.Chart);
bar1.ColorEach = true;
bar2.ColorEach = true;
bar3.ColorEach = true;
Random rnd = new Random();
for (int i = 0; i < 5; i++)
{
bar1.Add(i, rnd.Next(1000), "", bar1.Color);
bar2.Add(i, rnd.Next(1000), "", bar2.Color);
bar3.Add(i, rnd.Next(1000), "", bar3.Color);
}
tChart1.ClickSeries += new Steema.TeeChart.TChart.SeriesEventHandler(tChart1_ClickSeries);
}
int series = -1;
int index = -1;
void tChart1_ClickSeries(object sender, Steema.TeeChart.Styles.Series s, int valueIndex, MouseEventArgs e)
{
if ((series != -1) && (index != -1))
{
tChart1[series].Colors[index] = tChart1[series].Color;
}
Text = s.ValueMarkText(valueIndex);
s.Colors[valueIndex] = Color.Lime;
index = valueIndex;
series = tChart1.Series.IndexOf(s);
tChart1.Refresh();
}
Best Regards,
Yeray Alonso Development & Support Steema Software Av. Montilivi 33, 17003 Girona, Catalonia (SP) | |
Please read our Bug Fixing Policy |
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- Newbie
- Posts: 57
- Joined: Wed Jan 30, 2008 12:00 am
Re: Selection of bar from bar chart
Thanks your advise!!
But i have a problem about event~
I am trying mouse up and mouse down event to handle the bar chart selection, but i can'tchange the bar color (only bar styles). How can i modify it that changebar color ?!
But i have a problem about event~
I am trying mouse up and mouse down event to handle the bar chart selection, but i can'tchange the bar color (only bar styles). How can i modify it that changebar color ?!
Code: Select all
Dim bar As Steema.TeeChart.Styles.Bar = Nothing
If TypeOf series Is Steema.TeeChart.Styles.Bar Then
bar = CType(series, Steema.TeeChart.Styles.Bar)
AddHandler bar.GetBarStyle, AddressOfp_getbarstyle
Code: Select all
Private Sub p_getbarstyle( _
ByVal bar As Steema.TeeChart.Styles.CustomBar, _
ByVal e As Steema.TeeChart.Styles.Bar.GetBarStyleEventArgs)
If e.ValueIndex = -1 Then
Return
End If
If _dicTrendTitle2Selected.ContainsKey(bar.Title) = True Then
If Me._dicTrendTitle2Selected(bar.Title)(e.ValueIndex) = True Then
e.Style = Styles.BarStyles.Ellipse
End If
End If
End Sub
Re: Selection of bar from bar chart
Hi Chris,
Here is the example in VB that seems to work fine here:
Here is the example in VB that seems to work fine here:
Code: Select all
Public Class Form1
Dim bar1 As Steema.TeeChart.Styles.Bar
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
bar1 = New Steema.TeeChart.Styles.Bar
TChart1.Series.Add(bar1)
Dim Rnd As Random = New Random()
For i As Integer = 1 To 10
bar1.Add(i, Rnd.Next(1000), "", bar1.Color)
Next
bar1.ColorEach = True
AddHandler TChart1.ClickSeries, AddressOf p_ClickSeries
End Sub
Dim series As Integer = -1
Dim index As Integer = -1
Private Sub p_ClickSeries( _
ByVal sender As Object, _
ByVal s As Steema.TeeChart.Styles.Series, _
ByVal Valueindex As Integer, _
ByVal e As System.Windows.Forms.MouseEventArgs)
If ((series <> -1) And (index <> -1)) Then
TChart1(series).Colors(index) = TChart1(series).Color
End If
Text = s.ValueMarkText(Valueindex)
s.Colors(Valueindex) = Color.Lime
index = Valueindex
series = TChart1.Series.IndexOf(s)
TChart1.Refresh()
End Sub
End Class
Best Regards,
Yeray Alonso Development & Support Steema Software Av. Montilivi 33, 17003 Girona, Catalonia (SP) | |
Please read our Bug Fixing Policy |
-
- Newbie
- Posts: 57
- Joined: Wed Jan 30, 2008 12:00 am
Re: Selection of bar from bar chart
I try the example is ok, thanks!
I still have some problems.
1. How to cancel the series click color? if i don't want highlight the bar.
2. I want to select certain bar by draging a rectangle region, and highlight the bar. (after selection).Then i could set the bar color.
I tried MouseDown and MouseUp to selection the bar and redraw the chart, the event of "Steema.TeeChart.Styles.GetPointerStyleEventArgs" i just get the style attribute.
How can i change the bar color?
I still have some problems.
1. How to cancel the series click color? if i don't want highlight the bar.
2. I want to select certain bar by draging a rectangle region, and highlight the bar. (after selection).Then i could set the bar color.
I tried MouseDown and MouseUp to selection the bar and redraw the chart, the event of "Steema.TeeChart.Styles.GetPointerStyleEventArgs" i just get the style attribute.
How can i change the bar color?
Re: Selection of bar from bar chart
Hi Chris,
I'm not sure to understand why don't you use the same OnClickSeries event like in the example from above.
Could you please attach here a simple example project we can run as-is to reproduce the problem here? If we can see it, it would help us to understand what are you exactly trying to achieve and try to suggest you a solution.
I'm not sure to understand why don't you use the same OnClickSeries event like in the example from above.
Could you please attach here a simple example project we can run as-is to reproduce the problem here? If we can see it, it would help us to understand what are you exactly trying to achieve and try to suggest you a solution.
Best Regards,
Yeray Alonso Development & Support Steema Software Av. Montilivi 33, 17003 Girona, Catalonia (SP) | |
Please read our Bug Fixing Policy |