The task is count how many solutions to put N queens in NxN board. I have tried to thought every possible case to improve the performace, but it take almost 50s to run with N = 15.Here's what I've done:
Dim resultCount As Integer = 0
Dim fieldSize As Integer = 0
Dim queenCount As Integer = 0
[code].....
I wish to display two images (of minerals as seen under microscope in different light conditions).I want to use Queens_Image Control to display the images because this control allows smooth panning and zooming of the image.I want to know is there a way I can link one Queens_Image Control with another Queens_Image control on the same form in such a way that when the image in one of the Queens_Image Control is zoomed and/or panned, the image in the other Queens_image Control should be zoomed /panned identically.
View 3 RepliesMy application may be run by a number of different users and needs to be able to read and write to the same filles irrespective of what user is logged on to the PC.What is an acceptable location to store these files?i.e. a folder that has read/write permissions set as default.
View 2 Repliesim new in .net bt b4 i use vb6 and i wander what should i do. i incounter that errror.Arguments are of the wrong type, are out of acceptable range, or are in conflict with one another.and here are the following code that i use.
Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click rs = New ADODB.Recordset With rs .Open("select * from tbllogpass ", cn, 1, 2)
[Code]...
When I tried to read the data of a http link using VB.net, an error occur. The error is:
The remote server returned an error: (406) Not Acceptable.
This error is only occur for some links.
Update to my Question the best way to achieve acceptable security is to use ASP.NET Web Site Administration Tool the following is only a demo to use session but it is NOT RECOMMENDED for professional use. follow the advice of PhillFox to achieve better results
[Code]...
Can you create a string variable, that has 3 prespecified acceptable values?I need a variable that you can basically set it to one of three values and nothing else. Basically so you can't fat finger setting the variable in code.
View 1 RepliesI am working in vb.net 08.When i will work on the recordset then it will give the error:"Arguments are of the wrong type, are out of acceptable range, or are in conflict with one another."
I am using the below
Imports System.Data
Imports System.Data.OleDb
Imports System.Windows.Forms
Imports System.Windows.Forms.DataGridViewColumnCollection
Imports System.IO
[Code]...
When I tried to read the data of a http link using VB.net, an error occur. The error is:The remote server returned an error: (406) Not Acceptable.This error is only occur for some links.
View 2 RepliesI have an ASP.NET application with a SQL Server back end. I am storing all my dates in UTC format and doing the appropriate conversions to the local time zone of the browser viewing it. One of the pages asks for a start date and end date (no times).
I am taking the start date and setting the time to 00:00:00 hours (midnight) and I'm taking the End time and adding a time of 23:59:59, so that the date range covers the whole day. Now what I'm trying to do is do a SQL query to do a search for records in this date range. The problem is, the data in SQL is in UTC time and the user is typing their dates and times in their local date and times. My quickest solution was to convert the date and time to UTC, then search the records. However, by doing this, I am to believe ASP.NET converts the given time and date to UTC based on the server time zone. How can I convert a date and time to UTC time based on the time zone of the user?
The idea with this form is to add the futures which is calculated when the button is pushed but I need the list to update every time and show the values each time to which the previous value is added to the new calculation, e.g. of what it should look like in listbox:
Year 1: $1,290.93
Year 2: $2,724.32
Year 3: $4,350.76
etc....
I have been working on this a while and I am at a standstill, I was given a function to clear the form everytime it calculates but I don't know how to implement it, I am new to VB. Here is what I have so far:
Public Class frmFutureValue
Private Sub btnCalculate_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles btnCalculate.Click
[code]....
Basically i'm trying making a task manager program for myself. I want to know how I can display a message box and or play a sound when system time = time displayed in listview. I have used a dropdown box for the user to select which option they would like to select - sound or message box to popup. The data for the task will be stored in a listview box. I want it so that when the date and the time is = to the date and time set for the reminder the action will follow.Here is my code so far:
Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim notext As String = ""
If TextBox1.Text = notext Then[code]....
So I currently have the following:
2 timers
2 labels
1st label is "Clock" this pulls the time from the users current time zone/local time
2nd label is "UTCClock" Which would be UTC time
Now I have this for the first label: clock.Text = Format(TimeOfDay, "hh:mm:ss tt")
Which would give the users current time zone/local time. As for the UTC.. how would I add in for the UTC time from where the user is located at? I did some searches.. but couldnt find what I was looking for.. IM pretty sure its not as easy as getting the users current time zone/local time.. So im assuming that Theres a "bit more" code into getting UTC time..
I'm using
Days = Dat2.Subtract(Dat1).Days
where
Dat2 = today
Dat1 = installed date
to trace the days of a program installed in user's computer.However, the user can changes the system time of his computer to a advancing date. How can I get a SNTP time from internet to solve this problem?
I need a start date, a Total time passed until now, an average time per step, and a estimated time to finished. How can I do that? Also, I can close the application and when start up again I want to get the time counters as the last time, so How can I store that data is normal txt file (I say txt to take advantage of the ini app file which is a txt).
View 1 RepliesI am using this line of code on form load event it is working very fine but i have to problems
1. It replaces the form name and display the date and time but i want to keep both date and time and forms caption separated by some space.
2. When form loads it load the current date and time but the time does not change it should run.
What should i do please please help me code is as follows
Me.Text = Date.Now.ToLongDateString & " - " & TimeOfDay
I used .NET Framework 1.1 in C/S project before. Now I have updated the project to use .NET Framework 3.5 without modifying source code, but I have found that : the Remoted DateTime values can not be converted to the equivalent local time of a remote computer that is in a different time zone. In .NET Framework 1.1, the DateTime values can be converted automatically.
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There is a varchar column in the database table in this format of military time 1230 or 1750 or 1320 and that field get populated into a gridview in asp. I need to convert that string to standard time. I have tried the DateFormatString and nothing seems to work.
the asp is
<asp:BoundColumn DataField="ScanTime" SortExpression="ScanTime" ReadOnly="True"
HeaderText="Scan Time" DataFormatString="{0:hh}:{0:mm} {tt}">
<ItemStyle Width="80px"></ItemStyle>
</asp:BoundColumn>
that DateFormatString causes Input string was not in a correct format. error.
I have tried combinations of hh:mm and things like that but since its a varchar I think its failing
How to get the current date and time in textbox in IST ( Indian Standard Time) in vb.net ?
View 1 Repliesat the time of recoredset movenext out of memory error occured in run time data have 3800000 lakh recored
View 2 RepliesIs there a way of converting a unix time stamp to normal format time and date in .NET?
View 3 Repliesusing VS2008, targetting framework 3.5I have a rather complex UserConrol which does some of its own rendering.I display this UserControl on a form.Opening that form in the Designer creates an instance of the UserControl in the Designer, which tells me a NullReferenceException is occurring in one of my rendering methods.I have attempted to correct this by making alterations to the UserControl's default constructor, but have not found success.
View 1 RepliesJust getting started in VB.NET. I would like to add X-number of text boxes at run time. And then be able to address them by their index or some sequential numerical value (like an array)
This is what I have so far:
CODE:
When I turn this into a loop to create multiple toolboxes, how do I assign a name to the controls, or will all of them be named "MyTextBox" ? I'll increment their position so thats no problem.
When I run my app at first its keeps time accurately for the first minute or so there after it starts loosing seconds, and by the end of the day its minutes behind.I've created a class called ServerTimeTimer that has a timers.timer object that elapses every second and adds a second to a dateTime variable, and a property to retrieve the date time.[code]
View 5 Repliesi'm using a date time picker with format set to time. i want to be able to trigger an event at the time selected in the date time picker
View 19 RepliesI have a program that reads a file with Pacific Daylight Time, I want users to see the time and date in their local environment.
At present I have in Australia a time difference of 18 hours, so I have a list box with -24 to +24 and currently set at 18, my code is elementary as long as I have moved past day one of the month it suits me personally, but I want to distribute my app, so I need something better.
i'm using a date time picker and want an event to trigger with just the time so it will trigger every day at a certain time. can anybody help
View 1 RepliesI want to verify if the current system time falls within the specified time range between 7:30pm - 9:00pm. If it falls within the specified time range then display a message.
View 7 Repliesi have difficulties in making school schedule time and school bell? how to modify time span in comparing more than 40's variables time.
View 3 RepliesThe Now() function in VB.NET returns date and time which is different from the system time that I see on the right-bottom on the notification bar. It is 15 hours slower than the system time. Has anyone ever met this problem? I'm using .NET 2.0.
View 2 Replies