Re: Is there a setting in visual studio for the Convert.ToDateTime? - C# Discussion Boards

Re: Is there a setting in visual studio for the Convert.ToDateTime?

9-Nov-06 1:44

Okay thanks,

But why would DateTime TodayTest = DateTime.Now; produce the value "2006/09/11 12:00:00 PM" on my friend's computer but on mine it shows "11/09/2006". What could be the symptoms?

"Many of life's failures are people who did not realize how close they were to success when they gave up." Thomas A. Edison

Colin Angus Mackay9-Nov-06 6:59

Colin Angus Mackay

9-Nov-06 6:59

NarutoFan#1 wrote:
But why would DateTime TodayTest = DateTime.Now; produce the value "2006/09/11 12:00:00 PM" on my friend's computer but on mine it shows "11/09/2006". What could be the symptoms?

DateTime, as I've already said, has no cultural bias. It has no display format. There are a few methods on DateTime that convert it into a culturally biased string. Most of these methods take the culture of the OS (i.e. what is in the control panel for how to display date and time information). The ToString() method on DateTime can be supplied with any format you like if you want to get specific. e.g. DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")

*** Developer Day 4 in Reading, England on 2nd December 2006 - Registration Now Open ***

Upcoming Scottish Developers events:
* Developer Day Scotland: are you interested in speaking or attending?
My: Website | Blog

Re: Is there a setting in visual studio for the Convert.ToDateTime?

Pete O'Hanlon9-Nov-06 1:45

Re: Is there a setting in visual studio for the Convert.ToDateTime?

9-Nov-06 1:45

Naruto

You've asked the same question several times. I think you need to provide a little bit more information before we can help you.

Here's a few things to answer/think about:

What type of application is this? Is it WinForms or ASP.NET?
How are you attempting to print out the date? Have you printed out the DateTime.ToLongTimeString() to see if the time is there. BTW - you can't have a value of 14:00:00 PM;)

As I stated in an earlier answer to you, I suspect that your problem is the CurrentCulture. If you are using ASP.NET, then it is entirely possible that the problem is because the culture of the user that ASP.NET runs under is different to yours. To solve this, you can use a "clever" trick to sort this out.

In your Page_Load method, call the following routine:

public static void SetCulture(HttpRequest req)<br />
{<br />
  if (req != null && req.UserLanguages != null && req.UserLanguages.Length > 0)<br />
  {<br />
    SetCulture((string)req.UserLanguages[0]);<br />
  }<br />
}<br />
<br />
public static void SetCulture(string culture)<br />
{<br />
  CultureInfo ci = new CultureInfo(culture);<br />
  Thread.CurrentThread.CurrentCulture = ci;<br />
  Thread.CurrentThread.CurrentUICulture = ci;<br />
}

If you call the first method, the user will get data presented to them in the culture that they have set up on their machine. So, somebody from France would probably get information back for the culture fr-FR. Now, calling the second method means that you can specify the culture explicitly, and the user will get information back in that culture, so the same French user would get back information with GB settings if you called SetCulture("en-GB");

Arthur Dent - "That would explain it. All my life I've had this strange feeling that there's something big and sinister going on in the world."
Slartibartfast - "No. That's perfectly normal paranoia. Everybody in the universe gets that."

Deja View - the feeling that you've seen this post before.

Support1239-Nov-06 2:12

Re: Is there a setting in visual studio for the Convert.ToDateTime?

9-Nov-06 2:12

No it's winforms. Thank you...i tried your previous example that you gave me...

// Force the culture to English (GB).<br />
CultureInfo culture = new CultureInfo("en-GB");<br />
<br />
DateTime dateTime = Convert.ToDateTime(_appDate+" "+startTime, culture);<br />
DateTime dateTime2 = Convert.ToDateTime(_appDate+" "+endTime, culture);

but this brought back the exact same date "11/09/2006" as when i tried just to

string _fromDateTime = _appDate+" "+startTime;<br />
string _endDateTime = _appDate+" "+endTime;<br />
FromTime = Convert.ToDateTime(_fromDateTime);<br />
ToTime = Convert.ToDateTime(_endDateTime);

but on my friends pc it brings back the value "2006/09/11 02:00:00 PM"

Sorry, in know i'm not explaing enough what my problem is but i'm not even sure what is wrong... its just when i try to compare to dates like in this example: if( _today>=vch.FromDate && _today <=vch.ToDate)
_today has the value of todays date... on my computer it is "11/09/2006" the value of vch.FromDate is "11/09/2006" and the value of vch.ToDate is "11/09/2006"... This if statement should return true... Am i right.

On my computer it returns false... ???? Confused | :confused:

that is just one example... another one was yesterday's problem, but some how that sorted itself out... when the selected time "2006/09/11 02:00:00 PM" was writen into the database the the time would be inserted as AM but without the AM if that makes sense (like so: "2006/09/11 02:00:00.000)... Now it writes the time in the db correctly... "2006/09/11 14:00:00.000" Weird but true...

"Many of life's failures are people who did not realize how close they were to success when they gave up." Thomas A. Edison

Pete O'Hanlon9-Nov-06 2:27

Re: Is there a setting in visual studio for the Convert.ToDateTime?

9-Nov-06 2:27

What is vch? Is it a calendar control or something? Could this be the source of your troubles?

Support1239-Nov-06 2:32

Re: Is there a setting in visual studio for the Convert.ToDateTime?

9-Nov-06 2:32

the vch part is a class parameter. it is property in a class.

"Many of life's failures are people who did not realize how close they were to success when they gave up." Thomas A. Edison

Pete O'Hanlon9-Nov-06 4:14

Re: Is there a setting in visual studio for the Convert.ToDateTime?

9-Nov-06 4:14

Naruto

Try the following wrapper class and test:

using System;<br />
using System.Collections.Generic;<br />
using System.Text;<br />
<br />
namespace DateWrapper<br />
{<br />
 public class WrappedDate<br />
 {<br />
  private DateTime? _dt = null;<br />
<br />
  /// <summary><br />
  /// Initialize a new instance of <see cref="WrappedDate"/>.<br />
  /// </summary><br />
  public WrappedDate()<br />
  {<br />
  }<br />
<br />
  /// <summary><br />
  /// Initialize a new instance of <see cref="WrappedDate"/>.<br />
  /// </summary><br />
  /// <param name="dt">The date/time to wrap.</param><br />
  public WrappedDate(DateTime dt)<br />
  {<br />
   _dt = dt;<br />
  }<br />
<br />
  /// <summary><br />
  /// Initialize a new instance of <see cref="WrappedDate"/>.<br />
  /// </summary><br />
  /// <param name="dateOnly">The date part without a time.</param><br />
  public WrappedDate(string dateOnly)<br />
   : this(dateOnly, null)<br />
  {<br />
  }<br />
<br />
  /// <summary><br />
  /// Initialize a new instance of <see cref="WrappedDate"/>.<br />
  /// </summary><br />
  /// <param name="date">The date without the time</param><br />
  /// <param name="time">The time portion.</param><br />
  public WrappedDate(string date, string time)<br />
  {<br />
   if (string.IsNullOrEmpty(time))<br />
    time = "00:00:00";<br />
   if (!time.StartsWith(" "))<br />
    time = " " + time;<br />
   while (time.IndexOf("  ") > -1)<br />
   {<br />
    time = time.Replace("  ", " ");<br />
   }<br />
   try<br />
   {<br />
    _dt = Convert.ToDateTime(date + time);<br />
   }<br />
   catch (Exception ex)<br />
   {<br />
    _dt = null;<br />
   }<br />
  }<br />
<br />
  public DateTime? Date<br />
  {<br />
   get { return _dt; }<br />
  }<br />
<br />
 }<br />
<br />
 class Program<br />
 {<br />
  static void Main(string[] args)<br />
  {<br />
   WrappedDate start = new WrappedDate(DateTime.Now);<br />
   WrappedDate dt = new WrappedDate("20/12/2006", "10:00:00");<br />
   WrappedDate finish = new WrappedDate(DateTime.Now.AddHours(1));<br />
   WrappedDate compare = new WrappedDate(DateTime.Now.AddMinutes(30));<br />
   Console.WriteLine(dt.Date.ToString());<br />
<br />
   if (compare.Date >= start.Date && compare.Date <= finish.Date)<br />
    Console.WriteLine("Success");<br />
   else<br />
    Console.WriteLine("Failure");<br />
   Console.ReadLine();<br />
  }<br />
 }<br />
}

Support1239-Nov-06 5:27

Re: Is there a setting in visual studio for the Convert.ToDateTime?

9-Nov-06 5:27

Hi Pete, i have great news...

The problem is only on my pc. As soon as i build and install onto another pc it works fine...

The variable shows me the wrong values in the debugger but somehow it contains the correct values and writes these correct values into the database.

The problem still eludes me, but for now it at least works on the client's computers.

Thank you for taking the time to help out... Smile | :)

Regards
Nico

"Many of life's failures are people who did not realize how close they were to success when they gave up." Thomas A. Edison

Pete O'Hanlon9-Nov-06 9:11

To make possible to manage position and size of controls by mouse

9-Nov-06 9:11

That's great news. Smile | :)

I'll have a think about it some more, but it sounds as though the problem might have been with the debugger. As long as the info gets written properly, then that's all right.

wasek20018-Nov-06 23:59

wasek2001

8-Nov-06 23:59

Hello!
I have a panel with 2 buttons and it has to be possible for user, resize and change location (Drag&Drop) of buttons.
Do you have some tipps for me?

Re: To make possible to manage position and size of controls by mouse

mark_w_9-Nov-06 0:27

mark_w_

9-Nov-06 0:27

Have a look here:

http://www.codeproject.com/vb/net/RuntimeMovableControls.asp

Mark

Re: To make possible to manage position and size of controls by mouse

wasek20019-Nov-06 4:31

wasek2001

9-Nov-06 4:31

Thank you for your answer.
The idea is nice, and I will take it, if I don't find a "standard" solution for C#..

Is there a standard solution for this problem?

Abstract collection in property grid

mark_w_8-Nov-06 23:56

mark_w_

8-Nov-06 23:56

Hi,

The background:

I have a class "Search" that has a collection in it. This collection is of type "criteria", where "criteria" is an abstract class. The reason being is that i have some concrete classes "IntCriteria", "StringCriteria", "BoolCritera" that i want stored in the collection and they all inherit from "criteria".

To the problem:

I bind "Search" to a property grid, it works fine and i can see/edit all the properties of search, but when i try i add an item to the collection of "criteria" i cant because it does not know what concrete classes to give me as the option to add (see here http://img242.imageshack.us/img242/5803/exampleko9.jpg to see what i want, this is to add columns to a data grid view). Is there a way i can tag "IntCriteria", "StringCriteria" and "BoolCritera" so that the property grid sees them as a type of "criteria".

if not then, is there anyway i can list "IntCriteria", "StringCriteria" or"BoolCritera" in the add new item screen.

Hope that made sense!!!

To Recreate the problem, make a windows application, create this file (i have put multiple classes in one file for ease)(its only example code, not my actual code!)

<br />
using System;<br />
<br />
using System.Collections.Generic;<br />
<br />
using System.Text;<br />
<br />
using System.Collections;<br />
<br />
namespace TestApp<br />
<br />
{<br />
<br />
public class Search<br />
<br />
{<br />
<br />
private string _A;<br />
<br />
private string _B;<br />
<br />
private CriteriaCollection _cc = new CriteriaCollection();<br />
<br />
public string A<br />
<br />
{<br />
<br />
get { return _A; }<br />
<br />
set { _A = value; }<br />
<br />
}<br />
<br />
public string B<br />
<br />
{<br />
<br />
get { return _B; }<br />
<br />
set { _B = value; }<br />
<br />
}<br />
<br />
public CriteriaCollection cc<br />
<br />
{<br />
<br />
get { return _cc; }<br />
<br />
set { _cc = value; }<br />
<br />
}<br />
<br />
public Search()<br />
<br />
{<br />
<br />
}<br />
<br />
}<br />
<br />
public class CriteriaCollection : CollectionBase<br />
<br />
{<br />
<br />
public CriteriaCollection()<br />
<br />
{<br />
<br />
}<br />
<br />
public void Add(Criteria C)<br />
<br />
{<br />
<br />
this.InnerList.Add(C);<br />
<br />
}<br />
<br />
public void Remove(Criteria element)<br />
<br />
{<br />
<br />
InnerList.Remove(element);<br />
<br />
}<br />
<br />
public Criteria this[int index]<br />
<br />
{<br />
<br />
get { return (Criteria)InnerList[index]; }<br />
<br />
}<br />
<br />
public void CopyTo(Criteria[] target, int index)<br />
<br />
{<br />
<br />
InnerList.CopyTo(target, index);<br />
<br />
}<br />
<br />
public int IndexOf(Criteria element)<br />
<br />
{<br />
<br />
return InnerList.IndexOf(element);<br />
<br />
}<br />
<br />
public bool Contains(Criteria element)<br />
<br />
{<br />
<br />
return InnerList.Contains(element);<br />
<br />
}<br />
<br />
public void Insert(int index, Criteria element)<br />
<br />
{<br />
<br />
InnerList.Insert(index, element);<br />
<br />
}<br />
<br />
}<br />
<br />
<br />
//abstract base class, with all the common factors to any criteria<br />
<br />
public abstract class Criteria<br />
<br />
{<br />
<br />
private string _C;<br />
<br />
private string _D;<br />
<br />
<br />
public string C<br />
<br />
{<br />
<br />
get<br />
<br />
{<br />
<br />
return _C;<br />
<br />
}<br />
<br />
set<br />
<br />
{<br />
<br />
_C = value;<br />
<br />
}<br />
<br />
}<br />
<br />
public string D<br />
<br />
{<br />
<br />
get<br />
<br />
{<br />
<br />
return _D;<br />
<br />
}<br />
<br />
set<br />
<br />
{<br />
<br />
_D = value;<br />
<br />
}<br />
<br />
}<br />
<br />
}<br />
<br />
//Class to deal with any ints<br />
<br />
public class IntCriteria : Criteria<br />
<br />
{<br />
<br />
public IntCriteria()<br />
<br />
{<br />
<br />
<br />
}<br />
<br />
public int DoSomeIntStuff()<br />
<br />
{<br />
<br />
return 0;<br />
<br />
}<br />
<br />
}<br />
<br />
 <br />
<br />
//Class to deal with any strings<br />
<br />
public class StringCriteria : Criteria<br />
<br />
{<br />
<br />
public StringCriteria()<br />
<br />
{<br />
<br />
}<br />
<br />
public string DoSomeStringStuff()<br />
<br />
{<br />
<br />
return "Stuff done";<br />
<br />
}<br />
<br />
}<br />
<br />
//Class to deal with any Bools<br />
<br />
public class BoolCriteria : Criteria<br />
<br />
{<br />
<br />
<br />
public BoolCriteria()<br />
<br />
{<br />
<br />
}<br />
<br />
public bool DoSomeBooleanStuff()<br />
<br />
{<br />
<br />
return true;<br />
<br />
}<br />
<br />
}<br />
<br />
}<br />
<br />

Then on a form add a property grid and add

<br />
private void Form1_Load(object sender, EventArgs e)<br />
<br />
{<br />
<br />
Search s = new Search();<br />
<br />
this.propertyGrid1.SelectedObject = s;<br />
<br />
}<br />
<br />

Run the form and try and add and item to cc in the property grid

TIA

Mark

Re: Abstract collection in property grid

Robert Rohde9-Nov-06 0:52

Robert Rohde

9-Nov-06 0:52

Hi,

first create a class inheriting from CollectionEditor and override CreateNewItemTypes. The result should be an array of types which should be choosable.
Then add this attribute to your collection class:

[Editor(typeof(CriteriaCollectionEditor), typeof(System.Drawing.Design.UITypeEditor))]
public class CriteriaCollection : CollectionBase {
   //...
}

If you are lucky that's all you need to do Smile | :)

.

Robert

Re: Abstract collection in property grid

mark_w_9-Nov-06 1:27

mark_w_

9-Nov-06 1:27

WOW, nice 1, works a dream Smile | :)

Thanks, that has been the downfall of app and now its all working great.

I would have never worked that out by my self Frown | :(

Mark

Wrapping or creating custom XML elements

TUX2K8-Nov-06 23:39

TUX2K

8-Nov-06 23:39

I’m i bit stuck in my design.
It’s just that I not very familiar with XML programming in .NET.

Things is I’m creating a XMPP library in .NET. I have a working version dut I does not macth my demants.
What I want is a base xmpp element which it self extends some kind of XML element. This way I can easily set parameters en add sub element. But now the question, which element should I extend. I’ve tried XmlElement, but I don’t have a general XmlDocument in my project, nor can I. I could extend XmlDocument but this is overkill. I use the XmlTextReader to grab XML from the stream. I tried to extend XmlNode but I had no idea how to implement the abstract methods like name en such

Can any one point me in the write direction?
Tnx Remmelt

Like "VS Watch" control

El'Cachubrey8-Nov-06 23:38

El'Cachubrey

8-Nov-06 23:38

Hi
In my project i want to use an grid control which has abillity to add, edit, and remove rows
in the same manner what it do watch window in visual studio. In the beggining i suppose
what it can be achived throught ListView control, but unfortunately this control rather diffrent from my objective: one not have ability to add and remove rows in run-time and when i try to edit an column it is necessary what cell arlready have an value (at that this occur in creeper manner,
when i click by item which pretend to edit one responde only through an signifficant time).

Please advice me is exist an control which imitate VS Watch Window and where i can download one???
Or maiby some one already implement customization of ListView for similary purpose.

Thank.

how to select data from the datagrid

Saira Tanwir8-Nov-06 23:22

Saira Tanwir

8-Nov-06 23:22

hi all
i'm trying to access data from a datagrid. the datagrid contains the data of a datatable. how can i do it???

another problem is that i'm trying to show the contents of the datatable in a combo box.
the code i'm using is

if(results != null)<br />
			{<br />
			Databasecb.DataSource=results;<br />
                        }

the result is vey odd. instead of displaying the values in the datatable, the combo is filled with
System.Data.DataRowView
a multiple no of the times.
reply soon

rah_sin8-Nov-06 23:45

rah_sin

8-Nov-06 23:45

to select data from datagrid try out

dataGrid1[row number,column number].ToString();

and to bind combo box try

Databasecb.DataSource=results.Table["table name"];
Databasecb.DisplayMeember="column name to display";

rahul

Saira Tanwir9-Nov-06 0:00

Saira Tanwir

9-Nov-06 0:00

rahul

i tried doing what u sugested with the combo bue there is no option of results.Table["Table name"] so i tried Databasecb.DataSource=results.TableName;

however this gives me the following exception
Complex DataBinding accepts as a data source either an IList or an IlistSource

Saira

rah_sin9-Nov-06 0:15

rah_sin

9-Nov-06 0:15

if Databasecb is datatable or dataview then try

Databasecb.DataSource=results;
Databasecb.DisplayMember="column name to display";

rahul