Re: sorting a string - C# Discussion Boards

6-Nov-13 12:29

At design-time:

When you drag-drop Controls onto a Form, or into a container Control, like a Panel, they are written into the Designer.cs file in the order put on the Form.

When the WinForm "engine" lays out the Controls, then the last one created is effectively "in front of" the other Controls.

The ControlsCollection of a Form, or other container Control, is ordered by the z-order: so the last Control added, which is in front, is first.

If you change the z-order of a Control at design-time, its order in the ControlsCollection changes. Use 'BringToFront() it goes to the start of the ControlsCollection; use 'SendToBack(), and it goes to the end.

You can observe what happens at design-time by opening the Designer.cs file and examining the place in the file where Controls are added: change the z-order of one of the Controls you've put on the Form, and look at how the Designer.cs file has changed.

At run-time:

Controls you create and add to a Form, or container Control, are added to the end of the ControlsCollection of their container.

If you use 'BringToFront() on a dynamically created Control before you add it to the ControlsCollection of a container, it will have no effect, but will not cause an error.

If you use 'BringToFront() on a dynamically created Control after you add it to the ControlsCollection of a container, the Control will be at the 0th. element of the ControlsCollection.

Google CEO, Erich Schmidt: "I keep asking for a product called Serendipity. This product would have access to everything ever written or recorded, know everything the user ever worked on and saved to his or her personal hard drive, and know a whole lot about the user's tastes, friends and predilections." 2004, USA Today interview

sorting a string

vkEE6-Nov-13 8:13

vkEE

6-Nov-13 8:13

I have a string variable which is stored in the form of 4,3,2,1 - is there some way I can sort this list so i can see it as 1,2,3,4

Thank you very much!

Richard Deeming6-Nov-13 8:28

Richard Deeming

6-Nov-13 8:28

string source = "1,2,3,4";
string[] parts = source.Split(',');
Array.Sort(parts);
string result = string.Join(",", parts);

NB: This will sort using string comparison. That means that the string "9" will come after the string "10". If that's not what you want, then you'll need to expand your specification.

"These people looked deep within my soul and assigned me a number based on the order in which I joined."
- Homer

BillWoodruff6-Nov-13 10:45

6-Nov-13 10:45

Try this:

string reversedString = new string("4,3,2,1".Reverse().ToArray());

Note that this just literally reverses the order of the characters; it doesn't really "sort" in the technical sense of that word.

vkEE7-Nov-13 3:36

vkEE

7-Nov-13 3:36

Just what i needed. Thank you.

If you don't mind me asking, how did you learn about this way to solve the problem? How long did it take you to figure out?

Instead of creating a new variable, i tried to reverse the existing variable, and put into a ViewState variable. That did not work. so, i went to what you have written, which works!!

of the form:

ViewState["questionumber"] = myquestionumber.Reverse().ToArray();

How did you know we have to create a new variable to do this? The fact we are treating it as new string?

V.7-Nov-13 20:23

7-Nov-13 20:23

vkEE wrote:
How did you know we have to create a new variable to do this? The fact we are treating it as new string?

Funny question actually. My personal evolution in this, is that I started out using new variables and copies for everything. As we tend to divide a problem in smaller problems, transforming data (eg sorting a string) or other problems result in the creation of new variables to keep track of things (solutions to each smaller problem).

The more experience you gain through the years, the more compact I would start to develop, creating less and less variables.

V.

(MQOTD Rules and previous Solutions )

Sensor handling through coomport

Abhinav S6-Nov-13 18:10

Abhinav S

6-Nov-13 18:10

LINQ - var sorted = new List<int>(str.Split(',').Select(s => int.Parse(s))).OrderBy(x=>x);

Apps - Color Analyzer | Arctic | XKCD | Sound Meter | Speed Dial

Sanjiv Barnwal6-Nov-13 2:41

Sanjiv Barnwal

6-Nov-13 2:41

Anyone help me how can i handle multiple sensors fitted in chairs in auditorium that sends data that these chairs are busy or not ................................pls help ASAP Confused | :confused:

Re: Sensor handling through coomport

Chris Quinn6-Nov-13 3:26

Chris Quinn

6-Nov-13 3:26

Please supply more information:

What type of sensor?
What type of interface?

=========================================================
I'm an optoholic - my glass is always half full of vodka.
=========================================================

Re: Sensor handling through coomport

Richard MacCutchan6-Nov-13 4:01

Richard MacCutchan

6-Nov-13 4:01

The first thing you need to do is look at the interface provided by the sensor, and how it communicates with a computer. It's most unlikely that this would be via a COM port.

Veni, vidi, abiit domum

overlap

Member 103812095-Nov-13 23:10

Member 10381209

5-Nov-13 23:10

DateTime[] start = new DateTime[] { new DateTime(1990, 1, 1), new DateTime(1995, 1, 1), new DateTime(1995, 1, 1),new DateTime(2003, 1, 1) };
        DateTime[] end = new DateTime[] {   new DateTime(2000, 1, 1), new DateTime(2005, 1, 1), new DateTime(2005, 1, 1), new DateTime(2007, 1, 1)};
        i cannot explain what i what to do in earlier question so i have array that contain start days and another array contain end day. and i should calculate lenght of days i dont need calculate overlap days

|-------------------|
            |-----------------------|
            |-----------------------|
                    |---------------------|

Abhinav S5-Nov-13 23:53

Abhinav S

5-Nov-13 23:53

You can do this very easily using LINQ and TimeSpan.

First, get the minimum DateTime from the array(Min()).
Then get the maxumim DateTime from the array (Max()).

Using TimeSpan get the difference.

Apps - Color Analyzer | Arctic | XKCD | Sound Meter | Speed Dial

Member 103812095-Nov-13 23:58

Member 10381209

5-Nov-13 23:58

sorry but i did not understand you

Abhinav S6-Nov-13 0:13

Abhinav S

6-Nov-13 0:13

Something like
accepted

If you want to find the earliest or latest Date:

DateTime earliest = arr.Min(record => record.Date);
DateTime latest   = arr.Max(record => record.Date);

TimeSpan examples to calculate datetime difference - http://www.dotnetperls.com/timespan[^].

Apps - Color Analyzer | Arctic | XKCD | Sound Meter | Speed Dial

BillWoodruff6-Nov-13 0:37

6-Nov-13 0:37

Try this:

List<TimeSpan> dateIntervals = endDates.Select((eDate, ndx) => eDate - startDates[ndx]).ToList();

The Linq 'Select function overload that supplies an index is available as of .NET FrameWork 3.5.

Richard MacCutchan6-Nov-13 0:38

Richard MacCutchan

6-Nov-13 0:38

Try this:

for (int i = start.Length - 2; i > -1; --i)
{
    if (start[i+1] >= start[i] && start[i+1] <= end[i])
    {
        start[i + 1] = end[i];
    }
}
for (int i = 0; i < start.Length; ++i)
{
    timespan = end[i] - start[i];
    timeDifference += timespan.Days;
}

Veni, vidi, abiit domum

Member 1038120911-Nov-13 8:38

Member 10381209

11-Nov-13 8:38

yes but it is not remove overlap for the next time i mean for this one it is good |-----------|
|-------------|
but here |--------1-----|
}-----------2---------|
}==========3==========} here it should not add 3 because value od 3 contains in 2 one

radTreeListView - allow selection of items only at the same hierarchy

Richard MacCutchan11-Nov-13 22:28

Richard MacCutchan

11-Nov-13 22:28

I tried my suggested code with your original data and it produced the correct answer.

Veni, vidi, abiit domum

devenv.exe5-Nov-13 19:57

devenv.exe

5-Nov-13 19:57

how can make the telerik radTreeListView only allow selection of items under the same rootItem/ParentItem?

UK
  -london
      -london 1
      -london --
      -london 100
  -Newcastle
      -Newcastle 1
      -Newcastle 2
      -Newcastle 3
  -liverpool
USA
  -New york
  -califonia
China
  -one
  -two

From above sample menu of a radTreeListView, user should be allowed to select only

UK, USA or China. OR London, Newcastle, Liverpool, OR Newcastle 1, Newcastle 2, Newcastle 3 BUT NOT Newcastle 1, London 1, UK ALSO NOT UK, Newcastle, Newcastle 1.

User should only select things/items at the same hierarchy. Basically, they should not select a parent and a child, THEY either select from parents or children or sub-children.

This is the control am using : http://www.telerik.com/help/silverlight/radtreelistview-overview.html

"Coming soon"

Re: radTreeListView - allow selection of items only at the same hierarchy

Mycroft Holmes5-Nov-13 20:23

Mycroft Holmes

5-Nov-13 20:23

Presumably you have a TreeNode object that you stuff your objects into (you are displaying Country and City here). I would put a Nodelevel property on the TreeNode object and manage your SelectedItems collection using that property.

We use the HeirarchyID concept in our TreeNode that automatically knows it's level.

Take a read through some of Mr Smiths articles[^] I have quite a few bits of his code in my apps.

Never underestimate the power of human stupidity
RAH

Re: radTreeListView - allow selection of items only at the same hierarchy

BillWoodruff5-Nov-13 21:56