Basically im having problems programming an array as double. I have it as ' public arrytotal() as double ', however I keep getting the error messages
1. Error 5 Operator '+' is not defined for types '2-dimensional array of Double' and '2-dimensional array of Double'. C:UsersAlexDocumentsCafe AssignmentCafe AssignmentconverthomeBackupWindowsApplication2Form2.vb 115 22 WindowsApplication2
and
2. Error 1 Value of type 'Double' cannot be converted to '2-dimensional array of Double'. C:UsersAlexDocumentsCafe AssignmentCafe AssignmentconverthomeBackupWindowsApplication2Form2.vb 84 19 WindowsApplication2
Is it possible to program an dynamic array as a double? i have seen examples of this online, but cannot seem to do it.
This seems to work OK. Upon checking f_Data is indeed filled with 8 double type numbers.
I then try to convert this system.array to a double array as follows:
For i As Integer = 0 To f_NumberOfObservations - 1
f_Measures(i) = f_Data(i + 1, 1).value Next I then get an error pointing to the line ' f_Measures(i) = f_Data(i + 1, 1).value' of type MissingMemberException was unhandled by user code'
How can you add a image where when you double click on the icon and the program starts it shows a picture before the program loads. Like Photoshop startup or the new 2010 visual Basic express start up
I want to convert an array of numbers to a string with a colon imbetween splitting it. I tried:
StringA = Join(Array(), ":")
I get the error: 'Number of indices is less than the number of dimensions of the indexed array.'I seem to get this error alot in my programming but don't exactly know what causes it. Even if I can fix this error I heard that Join only works for string arrays so this wouldn't work anyway.
I currently have a VB.NET dll that returns a jagged array of double. This is the declaration:
Public Function CalcMatching(ByRef dataArray1 As Object, ByRef dataLen1 As Integer, ByRef dataArray2 As Object, ByRef dataLen2 As Integer, ByRef matchingType As String) As Double()()
It works well inside VB.NET, but when I insert it into a VBA project, I noticed that after the execution of the funtion, while retrieving the data, the "Type mismatch' excpetion is raised inside VBA.I searched over the internet, but I could not find a delcaration of a jagged array inside VBA. is that possible? If yes, how can I do it?
I'm trying to get my chart (y values) updated on the run, they need to be updated by an integer.
Dim a As Integer Dim b As Integer
'some button.click code, contains a += 1 and b += 1
Chart1.Series("Series1").Points(0).YValues = a Chart1.Series("Series1").Points(1).YValues = b But it says Value of type 'Integer' cannot be converted to '1-dimensional array of Double'.
I have BIG trouble trying to understand the decleration and creation of an instance with respect to arrays of objects. Basically I struggle with with this error:
Object reference not set to an instance of an object.
complete the test code I made below, so that I can try to understand it..? Been figthing with this for hours..
I want to build an array with info from an XML file.
The number of columns is static, but the rows will be increased once in awhile and I want one column to populate in a combobox while corrosponding selectedindex appears in a textbox. I think I can figure that part out, but currently stuck at the array building.[code...
I think I am missing something really simple. I want the user to be able to select a particular interest rate and term from radio buttons (in separate groups), the values for the buttons are to be stored in an array. Then they click the calculate button and it does it's magic and pops the result in to another field. I think I have things set up roughly the way it needs to. What I'm running in to right now is the term variable in the calculation formula is coming up with a blue underline stating that "value of type -1 dimensional array of double cannot be converted to a double". So as a result nothing is working right. I don't know where exactly I've gone wrong. If I change the data types nothing seems to change.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Dim loanAmount As Integer = AmountBorrowedBox1.Text
I'm working on a program that has to get a set of images and then scan them to find pixels that match colors in an color array. Anyway I think I got everything working but how to load the images in as bitmaps. See the images are dynamic, they change there filenames so I can't call them with a static call like Dim bmp2 As New Bitmap("c:button.gif").
So I am using a loop to feed the images into an array for bitmap but thats not working, anyway that I can do this as, right now the program gets all the filenames for the images from a text file that is sent in to us. All I need to do is have the program check each image for pixels that match our color list. But I cant get the images into the bitmap array.
[URL]..And put into a dynamic array where each month represents a record in the array with 3 given with C/P, Strike and Settle
The criterion is for every month grab all C/P that have matching strikes thus returning the following for every month. See data below and what I would like to return below. Want to use excel VBA to return the values from array into a sheet in excel. See data below
I created a code that will prompt someone to enter a name and if the name is in the array it should print out the correct integer, but it keeps printing out not valid.
Private Sub btnDisplay_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnDisplay.Click Dim strSub() As String = {"Jasmine", "Sean", "Devon", "Jontae", "Whitney"} Dim intNumb() As Integer = {15, 10, 11, 12, 5} Dim strSearchFor As String [Code] .....
A project requires to allocate a varying number of byte arrays (buffers).
It would be ideal if the following definition would be possible:
Dim ArrayOfBuffers() as buffer(10000) as Byte
The byte arrays must be ordered sequentially because they have to be written to a file by efficient procedures destinationFile.Write(ArrayOfBuffer(3),1000,1000)
The number of buffers will change during program execution sometimes. Therefore it would be nice to be able to do a ReDim on the data structure when needed.
I've been programming in VB.net for a while off and on, but never really had a need to use custom classes till now.I built a function in a module to populate a class, The class how ever is supposed to refer to one instance.I need to create an array of this class but the amount of instances needed is not always known.Works fine till the class goes to populate the class array.[code]It's probably something simple, I've just starred at it to long. Keep gettitng "Object reference not set to an instance of an object."
I'm trying to find the sum of all the digits that make up the number 2^1000, which you may have guessed is from Project Eula. I think it's good so far except I'm just learning about arrays and dynamic arrays, so how will I know what the size of the index will be so I can specify when the Do loop should stop so I don't get an indexoutofrange exception?
vb.net Dim BigNumber As Double = 2 ^ 1000 Dim DigitArray() As Char = BigNumber.ToString.ToCharArray Dim Index As Integer = 0 Dim SumOfDigits As Integer = 0 [Code] .....
I m trying to manipulate some excel sheet data in visual basic but for tht i hv converted the excel file into text tab delimited file. now i m able access each column n row value as i want but the prob is the text file has to b input n the no of columns in it could be varied so i need a method to count the number of elements in th tab delimited array wen first time the text file line is read.
Private Sub LoadButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LoadButton.Click Dim lin(8) As String, filRead As StreamReader, i, x, t, d As Integer
[Code].....
I am getting a run time error it is not saving to textfile
I am attempting to figure out the best way to place values into an array using dynamic data that is continuously streaming in from a ComPort. I want the array to hold 5 values at a time, with the newest incoming data point taking the place of the oldest data point. Each set of values in the array will be used in finding a trendline, which is then used in a later portion of the code.
I need a way to delete the last element in an array when I don't know how big the array is.Basically I need the VB version of php array_pop, but nothing relevant seems to be appearing in search results.
I'm trying to create an array of checkboxes dynamically and also want to put event to those checkboxes. For example: I have a array of checkboxes - Chk1, Chk2. I want it to work this way: When I check Chk1, I want to disable Chk2, and when Chk1 is unchecked, Chk2 is enable, and vice versa.
I have a SQL database which I'm running a query against to return a list of names - eg using "select names from table"I would like to add all of these names to an array so I can use them later. To do this I would need to use a dynamic array as the number of names returned could be anything.Apart from first running "select count(names) from table", getting a value and then Redim'ing the array on the count is there another method I can use.I've seen there's a dataset row.count? Can I somehow use this?
connection.Open() reader = command.ExecuteReader() While reader.Read()
On top of that it should look like a table and have gridlines between the 'cells' containing the picture/data, which makes it even more difficult for me. Before, control arrays were quite simple in VB6, but I've been searching for 1,5 hours now and I can't figure out how to do this in VB.NET 2010. Any idea how to tackle this the most efficiently?
