How do I link data in an Excel spreadsheet to a chart object in Visual Basic 2010? Really basic here, I just want to draw a single simple line chart from a single column of data. Is it easier just to read the data into an array (which I can do) and somehow get it into the chart?
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How do I link data in an Excel spreadsheet to a chart object in Visual Basic 2010? Really basic here....I just want to draw a single simple line chart from a single column of data. Is it easier just to read the data into an array (which I can do) and somehow get it into the chart?
View 1 RepliesBasically I've coded an Excel 2007 project in VB.NET 2010 that allows you to create charts with a fair amount of interactivity. I want the user to be able to save and reopen this workbook and still have that interactivity in any already-created charts, so they don't have to re-create them.
When I create the charts, I use Sheet1.Controls.AddChart(...), which returns a Microsoft.Office.Tools.Excel.Chart with which I can handle events and such. However, when I reopen the file and look through the Sheet1.Controls collection, there are no Chart objects. Accessing the charts through Sheet1.ChartObjects.Chart gives me Interop Charts, when I need the Tools Charts.
I have a chart in Excel that I'd like to use a subtitle on. There is no SubTitle Property on the chart object, so I looked in the Excel User interface and found that you can only create a sub-title by using a text box. The text box looks like its associated with the chart, not the worksheet, so how would I access that text box from code?
View 1 RepliesHow do I access the new attributes of Excel 2007 chart objects from VBA code such as setting the line gradient on a data series?
View 1 RepliesI have an excel data and able to draw an pie chart from vb.net.
I should be able to add the data table below the pie chart from vb.net
I have this rather stupid litle excel issue which somehow just doesn't go away by itself;I'm creating a excel chart from three rows of information data. Each row has a header, so far so good. The first row exixt of calender data and I planned it to use them as my x-axis labeling. But somehow excel uses them as variables and changes them in to a third bar. Which is not what I had in mind when copied this litle piece of code.[code]
View 1 RepliesI'm working in VS2010 on a visual basic application. It takes in serial port data, writes it to an access database, and then graphs the data.The data only comes in once every minute, so it's not like I'm building an oscilloscope. Right now, the chart is reading from the database using a table adapter and graphing just fine, so long as I keep the number of records in the database low.If I add too many records to the database, the chart shows a red "X" through it. I've played with changing the axes, but it is still a problem.I don't really need to graph the whole database.The twenty most recent records would suffice.How can I make a chart series with only a small subset of the database in it.Perhaps it cold be populated with a query?
View 1 RepliesAnyone have VB.Net or VBA code to ascertain if an Excel Object is positioned over (Hiding) spreadsheet data?I have code to create/position a chart object. Where would I begin to determine if there is data "under" an object.
View 7 RepliesI'm not sure if it can even be done, or if this is the proper place to post this question. I'm hoping that someone could give me a start in the right direction.I am looking for a way to link an Excel Spreadsheet to Microsoft Visio. I am envisioning this as an add in developed for Visio.To Summarize I would like to be able to list the steps of a process in Excel, and import the excel sheet into Visio. Finally I would like Visio to generate a flow chart based off of this imported data.I have developed a more detailed flowchart as to how I think this should work as well as a sample Excel sheet. The files are in a zip file which I would be more than glad to send to anyone who may be able to shed some light on the subject.
View 2 RepliesHow Do I update a data source link of an excel File from VB.net?I need to update data source links when saving an excel file. All of this through vb.net app
View 1 RepliesMy requirement is to graph (scatter graph) data from 2 arrays. I can now connect the data from the array and use it on the chart. My question is, how do I set the graph's X- and Y- axes to show consistency in their intervals?
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When i'm tryed to print Data chart the resolution of the chart changed as shown:
View 3 RepliesI've tried this[code]...
and it throws me an exception. I'm feeling that I'm doing something wrong with the object access, but this method worked in embedded VB, and do not works in .net.
From my app I use Excel to make a chart, from values I measure up. The chart is a xy scatter type. The chart is saved as a gif, then imported to a picturebox. how to add a trendline to the chart in Excel from .net.
View 3 Repliesit is possible to enter values using vb.net and sending it to excel and displaying graphical representation of the values from excel to my vb form?
View 1 RepliesWhere can I get more information on the "chart" object that appears to be new to VB 2010. It does not show up in the VB documentation and the parameters of its use are a bit vague when you look at the details of the module implementation.
View 1 RepliesI am able to place a single series of chart data with my code but I cannot for the life of me figure out how to add a second series. I can add the Series ... I can Select the series but cannot with out errors figure out how to put data the the series' that I am creating ...
Ol' Mitch
xlApp.ActiveChart.SeriesCollection(1).Values = Rng1 <-- Error
xlApp.ActiveChart.SeriesCollection(2).Values = Rng2 <-- Error
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i have an excel template and there was a chart there, I was confuse on how can I call that chart when I'm coding in vb.net.. how can I call the chart for me to set the new value to fill the chart..
View 1 RepliesExcel Chart SetSourceData abnormality?
View 1 RepliesHow to export chart from visual basic to excel sheet
View 1 RepliesI am trying to retrieve an excel chart (created out of .net), which i have earlier copied to the clipboard.As long as I work with type bitmap I can copy/retrieve it as follows:
Code:' copy to clipboard (in .net)charts.CopyPicture(Office.XlPictureAppearance.xlScreen, Office.XlCopyPictureFormat.xlBitmap)
' retrieve it againimgImage=Clipboard.GetDataObject.GetData(DataFormats.Bitmap)
Unfortunately, the quality of the bitmap is rather bad, thus I would like to copy it as a Metafile. The copying works, but the retrieving will only return Nothing.
Code:' copy to clipboard (in .net)charts.CopyPicture(Office.XlPictureAppearance.xlScreen, Office.XlCopyPictureFormat.xlPicture)
' retrieve it againimgImage=Clipboard.GetDataObject.GetData(DataFormats.MetaFilePict) ' returns Nothing!
I have checked if the object is available in the clipboard using GetDataPresent and it shows that there is a metafile available. Still, it returns nothing.On a side note: Is there a way to avoid using the clipboard? After all I am creating the charts in .NET and I need them there as well. Could I access the image of the chartobject directly?
The following code worked fine in MS Office 2007 PowerPoint Macro.However, in 2010 it crashes at the line "For each cht in..Function CopySheetChart(Sheet As Excel.Worksheet, Row As Integer, Col As Integer, _
Workbookname As String) As Boolean
' Copy the Excel sheet that has top left copy to RowOffset from the page header, and column Col
Dim Cht As Excel.ChartObject
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I am trying to sort out how to save or export a excel chart to a jpg image. this is what I have so far, but is obviously not working.
Private Sub ButtonJPG_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonJPG.Click
' Export chart as picture file
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So I created a loop that collects data from the user that runs for a time dictated by the user. It then stores all the data in excel and outputs a graph.The problem I am having is that I cant seem to figure out a way to set the range of the graph for the points taken.since it runs on a loop i have i = i + 1.where the the output into the excel file sequentially writes to the next cell [code]which doesnt seem to work like I would have hoped.Also, there is one other thing that my program keeps doing that I cant seem to figure out.One of the outputs to the excel file is decimal number, it shows perfectly in the textbox, but when I export it to excel it rounds it to the nearest whole number.[code]
View 11 RepliesI have a program that creates a excel spreadsheet and a chart on each tab from extracted data in various .txt files. Before the chart is created, two of the excel columns will end up with data like this: on column 9 and 10. I also use data (time, looks like 09:15) in column 11 that shows the time at the bottom of the chart. There are just too many digits in the output and the readability looks bad so I can also convert.
Input Output
800400047320000
825400047120000
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The chart will display those values just fine but, normally the conversion in code that I do during the placement of that data (so it reads a bit better) looks like this:
'Convert bit to Kbit
If InRate.Length < 7 Then
InRate = CDbl(InRate) / 1000 & " Kbit"
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how to make the chart work with just numbers and ignore the MB or Kbit at the end?
I have an excel file that analizes the info on a SQL database. we have generated a few charts and now I want to be able to display them on a form in VB 2010I searched the web for info but the solutions I've found do not work and my guess is because they are for earlier versions of VB.I have been able to read or even write to the worksheet using this but on the graphvb.net
Dim oExcel As Object = CreateObject("Excel.Application")
Dim oBook As Object = oExcel.Workbooks.Open("C: est.xlsx")
Dim oSheet As Object = oBook.Worksheets(1)
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I am new to this forum - and while I have programmed in VB.Net for some time, I am also new to Office Automation - so please bear with me We are creating a Metrics presentation in Powerpoint 2003.Currently, the presentation is manually created. We are automating this through VB.Net. I figured out how to add the slides from the template. I can modify text boxes and other objects other than the MS Chart objects. I can modify MS Chart objects - but find that after updating the chart, saving it, and closing the application - it apparently doesn't save correctly. When I reopen the presentation, it originally shows up with the changed data. Once I double-click it, however, it doesn't keep the modified data.
I looked at the properties of the graph in VB.Net - and it looks like the chart shape is read-only. I thought of two solutions - one: copy the chart, modify a local copy, and paste it over the original, or two: make the read-only chart writable. Problem is - I'm at a loss for how to complete both of these.As far as the copying of the chart, I found some information about using the .Copy() command, so I cam up with the code
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I have a ms access database with few tables and queries. I need to draw a graph/chart with the results of the queries in excel.
Is it possible to do with vb.net coding?
Is it possible to create a plot from List(Of Decimal) values in Excel with VB? I would like to avoid dumping data directly into a table, then creating the chart from that. Here is what I have so far, but I am getting a data type mismatch when I try to assign .XValues and .Values to the list. Is there some sort of conversion that needs to happen to turn a list into a series?
Dim Series As Excel.Series
Dim xVals As New List(Of Decimal)(New Decimal() {1, 3, 4, 5})
Dim yVals As New List(Of Decimal)(New Decimal() {2, 2, 2, 2})
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