I have this DataTable
Function GetTable() As DataTable
myTable = New DataTable
myTable.Columns.Add("Id", GetType(Integer))[code]....
return the Ids of X number of itmes (example 3) that the summation of their price equal Y (exmaple 100)
This question may be off-topic. If it should be posted in another place (even on another board) For some given curves (see sample below) I have to quantify whether the red dots in some regions of the curve are more dense at the upper or lower edge of the curve. Which algorithm might be adequate to perform this task? The curves are constructed from measurements. (No mathematical formula behind it.) Every data point has two dimensions: A value in the range 4000-7000 and a second value 0-255.
View 4 Replies[code]......
View 1 Repliesi want to select all items from listbox1 and then use that items for searching.if it finds the items, it will be displayed on listbox2 and if not, it will be displayed on listbox3.give a simple code for this? i am thinking of making listbox1 items into string so that it would be more easy for searching.
View 11 RepliesI have put an Input box + Button in my main form to search items inside my DataGridView in Visual Basic 2008 Express Edition, i just dont know what codes to put in my button to enable searching items inside my DataGrid.
View 2 RepliesTrying to build a program for catalogging and then later searching for cataloged items. everything fine except the search page. it's one combo box to fill the second combo box - works fine then select somthing from the second cb and press select this "should" then fill the "rich text box" to the right of it with ALL data from my table that contains whatever variable was selected in the second combo box. filling the source isnt hard, getting it to display the correct items and the correct ammount in the rtxbox is I keep ending up with the rtx box displaying exactly whats in my second combobox.
View 6 RepliesI am trying to implement an Algorithm called "Diamond-Square Algorithm" I am having trouble ending it so that it retiurns the required result. So far I have the folloiwng.
[Code]...
I have an array like so:
Dim classes() as String = {"FR%", "SO", "JR", "SR", "SR5"}
I need to loop through these values like so:
For Each value as String in classes
Next
Problem is, I have a If..Then..Else clause inside of this For Each..Next which says something to the effect of:
If actual_class = value Then
txt.Text = "Welcome"
Else
txt.Text = "Goodbye"
When I run this, unless the individual is the last value in the string array ("SR5") they are going to get the message "Goodbye"...so, I need somehow to both iterate through each value like is done with a For Each..Next loop but also break out of the loop once it hits the student's class, like a Do..While loop - so that their value doesn't get overrun by the Else clause.
How to handle event when I press Alt+X in combination?. I am coding VB.Net in my Windows App and I want to run some routine when user presses this combination but I am unable to handle both keys. Event fires for single key and not for combination of both keys.
View 5 RepliesI have this code:
Dim combinations As New List(Of String)
Dim word As String = "abc"
For c1 = 0 To word.Length - 1
[code].....
I have a windows based application using vb.net 2005 . My application , i have an array. The array contains 5 numbers. The numbers are,
3, 7, 2, 8 ,1.
I want to get the best combination of sum is 10 by using code .How will i do?
Im having some trouble creating this, What im after is like a database, and im sure its got something to do with it, Ive looked all over, but nothing gives me exactly what i want, Basically what do I do when, I have 9 Options, Example, Blue Black Red Green etc...Up to 9 In 3 boxes, now what im after is a shorter way for me to put, example:
CODE:
Then with not much code have it so it works with all 9 colours and gives an answer
CODE:
VS2010
VB
I would like to be able to add every combination of a list of numbers to determine which combinations equal a specific result.
Simple Example:
List: 2, 4, 6
Result: 10
How many and which combinations of numbers result in the number 10? The correct anwser is only one which is 4 + 6 = 10. The example is simple but the actual list may contain as many as 10 - 15 decimal numbers.
I have thought of the following as a possible way of checking each combination by using binary:
- There are 3 total number so the possible combinations would be:
123 - Three numbers
000 - Add no numbers
001 - Add the last number
[Code].....
However, I don't know how to actually match up the bitwise bits to the numbers in the array to actually add. Example:
101 - I should check if 2 + 6 != 10 per the example above so this wouldn't satisfy the result... does this make sense? The answer would be 4 + 6 = 10.
how to check and add all combinations from a list of numbers to determine if the result is a specific number?
I'm looking for some function to put together every possible combination of letters and number to create a string that is 14 characters long. I have found ways to make every possible combination of letters and numbers seperately. However, I've never run across anything to come up with them together. Every string created must contain letters and numbers.I just have no idea where to start on this one.
View 9 RepliesI would like to generate a combination of words. For example if I had the following list:
{cat, dog, horse, ape, hen, mouse}
then the result would be n(n-1)/2
cat dog horse ape hen mouse
(cat dog) (dog horse) (horse ape) (ape hen) (hen mouse)
(cat dog horse) (dog horse ape) (horse ape hen) etc
what I want to do is I want to list every possible combination with alphabet A-Z and number 0-9 That will be AAAA?
View 8 Repliesi would like to know that is there any way to activate a button with the Ctl and a key combination
we can do it with Alt and the key combination but my client is asking for ctrl & the key combination i have searched a lot but failed to find anything.
secondly :
i have used the alt & key combination for my buttons but the prob. is unless and untill the user presses the alt key the key combination is not highlighted. i have seen progs. where the key that is used for e.g. i have given &Add then the 'A' key is highlighted always with the underline. but when i am doing it by giving the name as &Add unless and untill the user presses alt the underline under A doesnt appear. do i have do more than just giving "&Add".
I would like to know how i could block out the ALT + TAB combination via Visual Basic 2010. I have the code to block the TAB key but not the ALT key.
View 1 Repliesall is said in the title, how can I simulate the combination Ctrl+Alt+DEL?[code]But none worked. I am working on VB.NET and Windows XP SP3
View 5 RepliesI'm trying to capture two key presses in my VB.net application, for this example CTRL + B, the code below doesn't work but it does for single keys. I have tried setting keypreview as true but this has no effect. [Code]
View 5 RepliesIn Visual Studio 2008 (windows forms), how can I map a combination of keys (i.e. Ctrl+F) from a form when running the application? Of course I use the keypress event to map individual keys but I haven't done it before for a combination of keys?
View 5 Replieswrite up the code for a program that could find all combination of the letters in a textbox and input the outcomes into a listbox, and I don't want any of them to repeat.
View 6 RepliesI have 9 numbers 1,2,3,4,5,6,7,8,9. I want different combinations of 5 numbers out of 9 numbers (no repeat of same numbers in a row). E.g. 1,2,3,4,5 - correct, 1,1,2,3,4 - wrong
I want no duplication either
E.g.:
1,2,3,4,5
1,2,3,5,4
Any formula which works for 8 or 9 or 10 or n numbers. I know there is 126 ways C(9,5)=(9!)/(4!.5!)=...=126 ways. I need the code to generate unique set numbers
E.g.:
1,2,3,4,5
1,2,3,4,6
2,3,4,5,6
i'm currently working on a security program and i need to temporarily disable some key combinations using vbnet. Key combinations such as: Ctrl-Alt-Delete, Alt-Tab, Alt-Esc, Win Keys, Alt Keys, Esc.
View 1 RepliesHow to disable all combination key of windows, I managed to disable taskmanager and altf4, however failed to find disable all windows keys, alt esc. alt space and etc. I don't have any API background.
View 9 RepliesI would like to know how to display 2 or more keys combination in (e.g. Textbox, msgbox...). When a user press "Ctrl + Alt + W", how to display the keypress of "Ctrl + Alt + W" in a Textbox.
View 2 Replieshow one would be able to detect what keys are pressed. The problem is i want this done while my application is running in the background. There are alot of examples of doing it when yu are is what you are busy with. My scenario. I have an app process running in the background hidden. The when i press ctrl and t as an example i would like my form displayed.
[Code]...
I have a software that im working on currently and i need the key combination Ctrl+Alt+Del to open up another window.Are multiple key combinations possible in Visual Basic?
View 1 RepliesWhat I'm trying to do here is load data into the clipboard and then wait until the user pastes the data before clearing and entering more data into the clipboard.Here's a snipet:
Code:
Clipboard.Clear()
Clipboard.SetText("TEST #1")
'Wait until user hits Ctrl+V
[code]....
Is there a way to pause execution of the code until the user hits Ctrl+V?
I have just comment and remove comment with the key combination ctrl + k, then ctrl + c and ctrl + k, then ctrl + u. But I think, I have pressed one time an another key. And I get the small mark in the code. What is this, and how can I get rid of it?[URL]..
View 3 Replies
