I have a large matrix, aprox 600x300 and want to divide it up into 6 sections across and 4 vertically and then sum the corresponding areas of the large matrix based on this division. To clarify all the numbers in the top 100 x 150 area of the matrix would be summed to give me the first number in the next matrix. I've tried playing with some code but its not giving me what I expect and I'm unable to figure out exactly why. I'm sure there is a more efficient way to do this but I'm unable to find it.
Array1 - original large array
Array2 - new small array
y and x count are the new coordinates of the new array
I'm creating an array of textboxes using this code, (x number of textboxes)
'Quantity textboxes ReDim QuantityTextBoxes(x) QuantityTextBoxes(x - 1) = New TextBox()
[Code]....
I need to sum the values of each textbox, but only if there is a value in it. I have error checking elsewhere so that isn't the issue. It keeps giving me an error saying "Object reference not set to an instance of an object."
I am working on a sale report program. Its purpose is to record the new item and the amount made from the item mon - fri. My problem isn't getting the total. I am using a For..Next to do this. The problem is that everytime i add a new item it changes all of the previous items weekly totals as well. Thus throwing off my Total Sales. My initial suspicion is that since i don't have it added as part of the output i display it changes and re-adds it to all old items.
The section of code below is the area where i believe my problem is. The Array itemNames holds 10 elements for the Items sold. The Array itemSales holds the weekly price data.
' add item to listbox For counterItem = 0 To itemCount Step 1
I have a Comma Separated value file in .txt format... simply put, its a bunch of data delimited by commas and text qualifier is separated with ""For example:
"So and so","1234","Blah Blah", "Foo","Bar","","","","" "foofoo","barbar","etc.."
Where ever there is a carriage return it signifies a new row and every comma separates a new column from another.My next step is to go into VB.net and create an array using these values and having the commas serve as the delimeter and somehow making the array into a table where the text files' format matches the array After that array has been created, I need to select only certain parts of that array and store the value into a variable for later use.... how to make the array and selecting the certain info out of it..
I generated 10 integers in the array(9). Then I separate the array into two parts by using substring. But I just can't run the code, it has no error but cannot run.
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
i have a combo box with grade A to F in it and at the combo-box textchange event it sholud add the value of each letter to and store it in a textbox.This is because i am adding all the grades of a student into a datagrid and i want all the 8 different grades to appear in the grid but it should some only the first selected six out of the eight...I am using this code but it is not stop when the loop counter is six?
Private Sub cmbgrade_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbgrade.SelectedIndexChanged If Me.cmbgrade.Text = "A" Then
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So with this code any time the user selects any of the Letters it should at it value to a tatal aggregrate till it add six different letters since i want to calculate for the grade of best six...example if user picks A A A A A A it should some up to six in the textbox and after that it should stop summing and add to the datagrid.that datagrid will have all eigth grades in its column but the system must add only six of them?
How can I sum up listbox value but the value I want to sum up is the one i multiplied. The q variable. look at my code. I want the sum of all Q variable in the textbox.Disregard the variables declared because I was trying to get some experiment but failed so some previously variables used left ,I did not clean up my variables.[code]
I have an underlying dataset for my datagridview which it is bound to. I've done most of the DGV code programatically.
I'm calculating quantity x Price and displaying it in a cell like this, which works well:
Private Sub DGVAdviceDetail_CellFormatting(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles DGVAdviceDetail.CellFormatting
I am trying to add numbers. So if there are 2 numbers in a listbox, theyare summed up. If there are 3 numbers in a listbox, they are summed up
[Code]...
What I'm trying to do is to count the number of items. Then I start my counter at 0. For each time the counter goes up, I add another row from the list box. and loops until my counter reaches the number of items in my listbox. I'm stuck intTotal. The only way I know of adding the totals is lstCosts.Items(0)+lstCosts.Items(1)+lstCosts.Items(3). But what if the user enters 4 numbers? I can't find a way around that. I think this should be a very simple question and I think only this line needs to be changed.
I have to generate a series of random numbers, say 100, within range of -1 and 1 and scale them by a value, say square root of 2. After which I take those 100 values and their sum = 0. Then scale that sum by another value. Check the code below to see what I mean.
I'm have trouble summing a datagridview computed column. I can sum other columns in the DGV. Is it possible to sum a DGV computed column and have the result shown in a textbox elsewhere on the form? I have BindingSource with an End Date Column and a DaysLate computed by column. The calculation is in code and works fine. I now need a total days Late TextBox under the DGV days late column
I am reading a textfile and extracting information from each line. For example string1 and string2. I am then writing these string to a datatable. However, sometimes there will be repeats in string1 and string2. If there are repeated lines I would like to be able to delete the repeating line and add a counter to find the total number of repeating lines. so if a string repeates 3 times I would like there to be a column with a 3 displayed next to the line in my datatable.
I have a dictionary that has strings variables as keys and a List collection of doubles as values.
Dim CellAddressContainer As New Dictionary(Of String, List(Of Double)) Dim Results As New List(Of Double) Within a loop I populate the Results variable as follows:
Trying to work out if there's a nice way of doing this, preferably in Linq rather than loops, which is what I've done for now.
I want the number of days my Product is active between two dates.
Product has many ProductHistories, ProductHistory has values for DateActive and DateInactive. DateInactive can be null, and often will be, to show that this history is ongoing. Histories won't overlap.
I want to sum the maximum of my startDate or the ProductHistory's DateActive, and subtract that total from the sum of the minimum of endDate or ProductHistory's DateInactive (endDate by default if DateInactive has no value).
Worked example:
Get active number of active days between 2011-01-01 (1st Jan) and 2011-02-01 (1st Feb)
Histories:
Active 2010-12-25 : Inactive 2011-01-05 Active 2011-01-15 : Inactive 2011-01-20 Active 2011-01-25 : Inactive null
I Have a Datagridview, with a column containing integer values. Is there any way to make a fast sum of all items in the column?Something like a SUM function in SQL.
how to best go about this project. I have just been given the task of creating a program that will primarily be used to import and sum a excel or text file that is tab delimited. As a quick example the file would be in the following format:[URL]The problem is that I would need to store this information locally (unless you know better) because I need to be able to append information to this from a second (or third, fourth, etc...) file and re-sum it, lets say that this is the second excel file that I needed to sum:
[URL]
I would have to append the week5 and week6 columns and add the Neapolitan row to my summation. This program will then format the sums into a list of the different flavors and the sums of all products sold during the total weeks and output to a text file.I have informed my employer that it would be easiest to do this with a VB script in excel, however, they are adamant that they want this done in VB.NET with a GUI.
I have tried several means all to no avail. how sum items in the column of a listview
dim lv as listviewitem lv=listview1.items.add(txtscore) lv.subitems.add(txtunit) lv.subitem.add(grade)
I have suceeded in adding scores, unit and grade to the listview and i dont know how to sum the total unit in column 2 and how to get point to calculate the gpa
Im dont know whos familiar with acronis but im using the command line version and some scripts i made to restore data to hard drives.The program is running in CMD, so its should be doable. It also not only needs to redirect but keep the CMD windows open so i can input y/n if is requires it. [code]...
I have 4 textboxes three for input one for output. Basically what it does is takes input from textbox1, 2 and 3 then combines them in textbox4.here is an example:
what I am trying to do is is compare the input with the output.so take the first two characters in textbox4 and see if they are the same as in textbox1. then take the second two characters and see if they are the same as textbox2.
I know how to do it for just one string of characters but I am not sure how to seperate out different letters in one textbox.
I have a datagrid that show an online status. the Status column have 2 status, OnLine n OffLine. I want to make any record that Status = Online into bold style.
i want to update different areas of my MVC page after one action (say a click) occurs.how, i use ajax, and wrapping the entire area where all these parts need to be updated is counter intuitive as the ajax data being sent back would be close to the entire page.i have a few partial views, - but the problem is, each action only returns one view! how can i return multiple views from this one action?i know a popular solution is to just hammer the server with multiple async javascript ajax requests for each "part" of the view, but this really is unnecessary and inefficient, reconstructing and destroying the page (say) 5 times for just one action, when it should just occur once, and once it does, the server should manage all the partial views then and there.
I am trying to get the date parts selected by a user on the MonthCalendar control. I know how to set the date, thanks to some help from this forum. Now I have run into another problem. I need to be able to take the MONTH, YEAR and DAY selected by the user. I have tried this example I saw, but it does not work, mmDay = CalendarMonth.Tex.ToString("d").
