VS 2008 Finding/Changing Range From Existing Excel Chart?
Aug 2, 2011
I have an Excel template that contains numerous pre-defined charts and a program that opens this template and collects data used to populate the charts. This works great but I now want to adjust the series length so that the charts only used the data collected (not a range of 32000). I'm trying to iterate through the charts and determine the range for each series of each chart but not having much luck. The snippet below allows me to see the xvalues but does not return any information as to where this data is located. Does anyone know how to extract the range for each series in a chart?
[Code]...
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Sep 29, 2011
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]
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Oct 14, 2011
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?
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Dec 4, 2010
I am attempting to calculate a range of prime numbers determined by two user inputs (textboxes) I have the following code, but it displays nothing but zeros in the multiline textbox. I just need a bit of guidance here as to what is causing my code to show nothing but zeros.
Public Class PrimeNumbers
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim lowBound As Double
Dim upBound As Double
[code]....
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Apr 3, 2012
I am trying to show my excel chart in visual basic listbox and it does not work. I have added the reference of microsoft.office.interop.excel in my code i have put the range of column "A" and i do not know how to change the range to where the chart is in the excel.
Here is my code!
[Code]....
I have attached the excel file screen shot if that can help in any way...So basically When i click on the button in VB than it should show me the excel chart. My code just shows me the column "A" which shows me the "data" column only from the excel file.
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Sep 17, 2010
Is it possible to create and view an Excel 2007 line chart in a form in VB 2008?My VB program has a listview control in details view like a spreadsheet. Currently I have this data exported into a csv file which I copy into an xlsx file where I have created a few line charts based on the data.
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Oct 24, 2011
In the same class I have
Dim WithEvents YMDChart As Chart
Dim WithEvents YMDChartArea As ChartArea
Then:
Public Sub PlotYMD() handles ButtonPlot.click
YMDChart = New Chart
[Code]...
But here at line 5 I have an error saying that I am not refering to an existing instance whereas I am.If think it is because at this step the YMDChart is dead even if it is present on my form. I have tried with the declaration "Static" but it is only possible within a method and is incompatible with "with event".
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May 12, 2010
In VBA I am able to search a text in an excel range like this:
Code:
Workbooks("Book1").Activate
With Worksheets(1).Range("C1:C10000")
[code].....
I have upgraded to Visual Studio because of the jobs I am to carry out. So I am translating all the codes from "VBA" to "VB.NET" (Visual Basic 2008)But I haven't been able to use "Find Method" in VB.NET. I am using Microsoft Office XP Standart Edition (2002 Version). I downloaded and installed Office XP PIAs. After that I referenced them in my project. I used the code Code:Imports Microsoft.Office.Interop.ExcelBut I can't do what I want Now, how can I use "Find Method" in Visual Basic 2008 to find a text in an excel range in one of my workbooks?
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May 14, 2010
How do I start in visual basic 2008 express, a existing Excel application? e.x test.
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Mar 26, 2012
I currently have a chart that plots lines of a changing value every time it is called via a timer.
Everything is running as I expected and I am happy, but now I want to be able to press a [STOP] button which will stop the timer and stop the graph from updating, (which I have coded and is now working OK), BUT I then want the code under this [STOP] button to clear everything from the graph, so when I re-start the timer, the graph is cleared and starts plotting fresh points on a clean graph.
The problem I currently have is that when I press the [STOP] button and then press the [START] button, the new lines that get plotted are "added" to the existing lines that are already on the chart, instead of having a new "blank" chart, with no data on it.
So what I am really asking is does anyone know if it is possible to reset a chart clearing everything off it so it is ready to start displaying fresh data?
I was hoping it was something like: "Chart1.Clear" or something simple like that, but I can't seem to find anything that will do it.
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Jul 28, 2009
just wondering if it is possible to add a method to all forms in my project without having to do it on one form and Inherit all my other forms from that one
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Jun 21, 2012
I have an array of type Double() (1 x n) that I am trying to quickly plot on a graph I've already set up. The only thing I want/need to do is take my array and store it as data points (y-axis values) in the series I already have. What's the best way to do this? Also, will the data points that are plotted change as my array changes, and if not, how would I replot those new points and get rid of the old points?
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Aug 5, 2010
Basically 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.
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May 26, 2012
Is it possible to develop a program in vb.net which can find the location of vehicle in a cctv camera range?if possible ,what are the APIs and technologies used for it?can any one suggest any link or the steps involved in this process...?
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Mar 29, 2010
Error14Option Strict On disallows implicit conversions from 'System.Windows.Forms.TextBox'to 'Microsoft.Office.Interop.Excel.TextBox'
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Jul 13, 2010
I have an application the contains several excel files bundled with it. I'm not opening the files and processing them within my application. These files contain a data-connection to reload all of the pivot-tables within each excel file. I have a 'link' on my form, that when clicked, it determines which file to open and calls a sub using filename and executing Process.Start(filename) for any excel file I want to open. I have no problems opening any one of the files and then exiting excel.
The problem is when I 'close' a file, but don't exit Excel; then try to open another file(clicking link on form)... it creates a new instance of Excel.
I know from experimenting that the fileopendialog form will 'reuse' an existing Excel instance, IF it does not already have a file open.
How can I do the same thing without using the fileopendialog?
I don't want the end-user to have access to the folders where these files live. That's why I have multiple 'links' on my form, one for each xls that already exists. I just want them to be able to click on a link and the xls file opens AND if they choose to merely 'close' a file and not exit... Don't create a new instance of Excel, but re-use the existing one.
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Jun 3, 2009
I have a large project which consists of about 60 modules. It contains a lot of DataGridView components.
Recently I implemented cut-copy-paste functionality to one of the DataGridViews.
What is the best way to add same functionalities to all the other DataGridViews .
P.S. I don't want to create a new component which inherits DataGridView and re-define all the DataGridViews.
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Mar 23, 2009
I'm trying this example but it doesn't seem to work. It gives a IndexOutOfRangeException:I'm using a txt file where the columns are Tab seperated.)
Imports System.Windows.Forms.DataVisualization.Charting
Imports System.Data
Imports System.Data.OleDb
[code].....
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Mar 7, 2011
How to set up a Chart using the new MS Chart control. I want to be able to populate the data via SQL because the user will be able to dynamically change the values via drop downs. The format of the data will be the same (Qty, Time Period) but the Focus of that data will change. I'm honestly not sure where to start, I can draw the chart but I have no idea how to populate it with data via code so it can be changed dynamically.
VBE 2010, and I'm hitting an AccessDB
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Jun 17, 2012
I'm using vb.net. Basically, I have a drop down list, text box and a submit button. You choose a movie director from a drop down list, then type in a movie, click button and it adds the data to my database.There's another button which hides/shows drop down list, text box and submit button using Visible = True and Visible = False, but what I don't like about it is when it hides the things I said before, it leaves some white/empty space like if they are still there, but not visible.Is there anyway to put some kind of holder/container and place a button which when clicked could add my drop down list, text box and submit buttons to that place?
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Jan 15, 2011
I can now navigate to pages, fill forms, submit forms, click elements etc.My next big step will be collecting html element ID's which are constantly different each time I navigate to a page.On the webpage I am working on, each page contains 10 of these ID's.
ill_btn_20234518
ill_btn_20534538
ill_btn_20174048
Now I am just looking to click on one of them at random for right now. It doesn't matter which one. Or perhaps the first one to appear on the webpage.Here is the code that I tried first........it works fine for clicking static buttons (without the random id #'s at the end)
Dim ill As HtmlElement = WebBrowser1.Document.GetElementById("ill_btn_")
ill.InvokeMember("click")
End Sub
I guess what I am looking for here is some sort of partial id tag, to let it know to search for the first ID that begins with ill_btn_ ?
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Feb 20, 2009
I wanted to make a flow chart with more than 50 labels (see this link for just a small portion of the flow chart [URL]). I looked all around but couldn't find one in VB 2008 with the same problem. but anyway, my questions are:
1. Is there a way to set the color of all the labels instead of just one by one say:
Label1.BackColor = Color.FromKnownColor(KnownColor.Control)
Label2.BackColor = Color.FromKnownColor(KnownColor.Control)
Label3.BackColor = Color.FromKnownColor(KnownColor.Control)
...
...
...
There should be a way to loop through them
2. Is there a way for search through the Labels and find for example Label14? or a label with tagindex of 14? I rather be able to find label 14 but the tag also works.
3. Is there a better way to represent flow charts and stuffs like that in VB 2008?
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Aug 5, 2010
I have a purely XML database. It's stored as XML, there is no other database file. I did this by first creating a dataset in VB, then adding tables and relationships. I load the database by calling DataSet.ReadXml(FilePath), and save the database by calling DataSet.WriteXml(FilePath).
Now I need to make schema changes, but need to preserve existing data. How might I go about doing this? As soon as I load the database I loose all data if I change the schema in the dataset designer.
I have searched for changing database schema, but everything I find deals with real databases, not XML only ones, and the info doesn't apply because they are using db connections and then running sql against it and AFAIK XML databases have no way to "connect".
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May 11, 2011
I'm trying to copy a Range from Excel and Paste the information in powerpoint in either the HTML or the default format, however, I am having some difficulties. I am able to get the code to work for pasting the Range as an OLE Object but nothing else. The problem with doing this is that having the embedded excel documents in the powerpoint makes the file extremely large and unstable. I just need to be able to paste the information without the embedded information where it is editable (so, not as a bitmap or picture).
With ppt2Slide
Sheets(index2).Activate
Range("CP12:CT" & RangeIndex2).Copy
[code]....
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Sep 21, 2009
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.
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Jun 5, 2011
it 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?
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Jan 7, 2010
I 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
[Code].....
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Jun 3, 2010
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..
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Mar 16, 2010
Excel Chart SetSourceData abnormality?
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Jul 13, 2010
How to export chart from visual basic to excel sheet
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