Good afternoon,
I hope you can help me (should be easy really). I have built a spline chart which is bound to an ever changing datasource.
What I need to do is remove the Series items label values, because they are obstructing the chart itself.
I have this code:
But for some reason the labels stay, which is really annoying. Could someone tell me what I am doing wrong?
I hope you can help me (should be easy really). I have built a spline chart which is bound to an ever changing datasource.
What I need to do is remove the Series items label values, because they are obstructing the chart itself.
I have this code:
But for some reason the labels stay, which is really annoying. Could someone tell me what I am doing wrong?
Private Sub Chart1_NeedDataSource(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Chart1.NeedDataSource Dim myImpersonate As New AliasAccount("administrator", "", "") myImpersonate.BeginImpersonation() DirectCast(sender, Telerik.Reporting.Processing.Chart).DataSource = myDataSource ClearLabels() myImpersonate.EndImpersonation() End Sub Private Sub ClearLabels() For Each c As ChartSeries In Chart1.Series For Each item As ChartSeriesItem In c.Items item.Label.TextBlock.Text = "" Next Next End Sub End Class |
7 Answers, 1 is accepted
0
Hello Jaymie,
In order to hide the ChartSeries items' labels you have to modify your ClearLabels() method as shown in the following code snippet:
Best wishes,
Peter
the Telerik team
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In order to hide the ChartSeries items' labels you have to modify your ClearLabels() method as shown in the following code snippet:
Private Sub ClearLabels()
For Each c As ChartSeries In Chart1.Series
c.DefaultLabelValue = String.Empty
Next
End Sub
Best wishes,
Peter
the Telerik team
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Jaymie
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answered on 13 Apr 2010, 12:26 PM
That didnt work for me, this is my code:
and I have attached an image so you can see what is happening.
While we are on the topic, how do I change the spline colors and is there a way to remove the Weeks spline off the legend and the graph? I wanted to use Weeks for the X-Axis, but not to appear on the graph.
Private Sub Chart1_NeedDataSource(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Chart1.NeedDataSource |
Dim myImpersonate As New AliasAccount("administrator", "amdb9p911", "thorntonross") |
myImpersonate.BeginImpersonation() |
DirectCast(sender, Telerik.Reporting.Processing.Chart).DataSource = myDataSource |
ClearLabels() |
myImpersonate.EndImpersonation() |
End Sub |
Private Sub ClearLabels() |
For Each c As ChartSeries In Chart1.Series |
c.DefaultLabelValue = String.Empty |
Next |
End Sub |
and I have attached an image so you can see what is happening.
While we are on the topic, how do I change the spline colors and is there a way to remove the Weeks spline off the legend and the graph? I wanted to use Weeks for the X-Axis, but not to appear on the graph.
0
Hello Jaymie,
There isn't out of the box solution for customizing the Chart item when it's automatically bound. You would need to create the chart programmatically in order to have full control over it.
Check out the following help articles:
Creating Chart Programmatically
Creating Chart Programmatically - more complex example
Styling Chart Elements
How Do I add Axis Labels Programmatically?
Greetings,
Peter
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.
There isn't out of the box solution for customizing the Chart item when it's automatically bound. You would need to create the chart programmatically in order to have full control over it.
Check out the following help articles:
Creating Chart Programmatically
Creating Chart Programmatically - more complex example
Styling Chart Elements
How Do I add Axis Labels Programmatically?
Greetings,
Peter
the Telerik team
Do you want to have your say when we set our development plans? Do you want to know when a feature you care about is added or when a bug fixed? Explore the Telerik Public Issue Tracking system and vote to affect the priority of the items.
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Jaymie
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answered on 19 Apr 2010, 11:38 AM
OK so now I am trying to create the graph programatically and it isn't working.
I have some code (which you can see below) but the chart just says "There is no or empty series".
I have stepped through my code and their are definately values being passed and the series are being created.
If I do a messagebox.show(pChart.Series.Count) I get more than 0, so there is a series collection.
Can you tell me what I am missing for the code below please.
I really wish your documentation was better as I always find it difficult to do things that should be simple...
I have some code (which you can see below) but the chart just says "There is no or empty series".
I have stepped through my code and their are definately values being passed and the series are being created.
If I do a messagebox.show(pChart.Series.Count) I get more than 0, so there is a series collection.
Can you tell me what I am missing for the code below please.
I really wish your documentation was better as I always find it difficult to do things that should be simple...
Public Shared Sub ReturnSalesTrendChart(ByVal pDatasource As DataTable, ByVal pChart As Telerik.Reporting.Chart) |
For Each pColumn As DataColumn In pDatasource.Columns |
' Add the column |
Dim chartSeries As New ChartSeries() |
chartSeries.Appearance.LabelAppearance.Visible = False |
chartSeries.Name = pColumn.ColumnName |
chartSeries.Type = ChartSeriesType.Line |
chartSeries.Appearance.LineSeriesAppearance.Color = System.Drawing.Color.BlueViolet |
For Each pRow As DataRow In pDatasource.Rows |
' Add the Value |
Try |
Dim pValue As Integer = pRow(pColumn.ColumnName).ToString |
chartSeries.AddItem(pValue) |
Catch ex As Exception |
chartSeries.AddItem(0) |
End Try |
Next |
pChart.Series.Add(chartSeries) |
Next |
pChart.PlotArea.XAxis.AutoScale = False |
pChart.PlotArea.XAxis.AddRange(1, 5, 1) |
pChart.PlotArea.XAxis(0).TextBlock.Text = "Week 1" |
pChart.PlotArea.XAxis(1).TextBlock.Text = "Week 2" |
pChart.PlotArea.XAxis(2).TextBlock.Text = "Week 3" |
pChart.PlotArea.XAxis(3).TextBlock.Text = "Week 4" |
pChart.PlotArea.XAxis(4).TextBlock.Text = "Week 5" |
End Sub |
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Jaymie
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answered on 20 Apr 2010, 04:32 PM
just so people on the forums know, I submitted a ticket and have been told that this is a bug that has been fixed with the new version, which I am currently installing now :)
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Tim Estrada
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answered on 24 Sep 2010, 04:13 PM
Hello Peter,
I am trying to eliminate the labels on a spline area chart. I am using 2010 Q1and I just cnnot get the labels to disappear. I would appreciate it if you could provide me the similar/equivalent code in c# to eliminate the labels on the chart.
Sincerely,
Tim
I am trying to eliminate the labels on a spline area chart. I am using 2010 Q1and I just cnnot get the labels to disappear. I would appreciate it if you could provide me the similar/equivalent code in c# to eliminate the labels on the chart.
Sincerely,
Tim
0
Hi Tim Estrada,
Kind regards,
Peter
the Telerik team
This is the method from my previous post. Give it a try and let us know how it goes.
private void ClearLabels()
{
foreach (ChartSeries c in Chart1.Series)
{
c.DefaultLabelValue = string.Empty;
}
}
Additionally we maintain a free Code Converter, which you can always use to convert code if you have found examples in VB. I have converted the example to C# for your convenience and verified it works with no exceptions.
Kind regards,
Peter
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Explore the
Telerik Public Issue Tracking
system and vote to affect the priority of the items