C# Discussion Boards - CodeProject

marwan_siala23-Mar-07 2:20

23-Mar-07 2:20

thanks ..

and there is this property listBox.items.CopyTo i did not know how it works.!!
it should copy all items to array but how??? please try it.

thanks allot

Re: list box

joon _vh.23-Mar-07 2:34

joon _vh.

23-Mar-07 2:34

this works:

object[] objarr = new object[listBox1.Items.Count];
listBox1.Items.CopyTo(objarr,0);

You could use Array.ConvertAll to change the type from object to string or whatever you like.

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

Re: list box

marwan_siala23-Mar-07 4:09

marwan_siala

23-Mar-07 4:09

thanks allot it works..

oh... to convert to string

string[] objarr = new string[listBox1.Items.Count];
listBox1.Items.CopyTo(objarr,0); Smile | :)

thanks

How do I display a dynamically generated ArrayList of custom objects in a WinForms datagrid in .NET 1.1? [modified]

Vikram A Punathambekar23-Mar-07 1:56

Vikram A Punathambekar

23-Mar-07 1:56

I have a collection (ArrayList) of a type we'll call BoolPair. It is generated dynamically. BoolPair simply has two bools - bool1 and bool2. I'd like to display it in a DataGrid:
* with a header
* as three columns - the row number, and two strings that describe the values of bool1 and bool2.
* occupying the entire width of the datagrid

I have no problems exposing the bools as properties. Rama Krishna suggested I create properties and simply set the DataGrid's DataSource property to my ArrayList, but it has the following caveats:
1. I'm not able to format the header, i.e., choose the text to be displayed in the header
2. I don't get a row number (this is easy to fix, though)
3. The columns have the default width. I want them to occupy the entire width of the datagrid.

I *have* to use .NET 1.1. Thanks in advance. Smile | :)

-- modified at 8:48 Friday 23rd March, 2007

Cheers,
Vikram.

The cold will freeze our stares
We won't care...

Re: How do I display a dynamically generated ArrayList of custom objects in a datagrid in .NET 1.1?

joon _vh.23-Mar-07 2:37

joon _vh.

23-Mar-07 2:37

You can change this either by turning off autogeneratecolumns for your datagrid, and adding the columns in the IDE via the properties window of the datagrid.

Another option is doing it by code. Datagrid and its columns have properties you can change at runtime. They might need a refresh, I'm not sure.

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

Re: How do I display a dynamically generated ArrayList of custom objects in a datagrid in .NET 1.1?

Vikram A Punathambekar23-Mar-07 2:51

Vikram A Punathambekar

23-Mar-07 2:51

joon vh. wrote:
autogeneratecolumns

I should have mentioned I'm using Windows Forms. D'Oh! | :doh:

joon vh. wrote:
Datagrid and its columns have properties you can change at runtime.

I'm sorry if my questions sounds very basic, but can you give me an example?

Cheers,
Vikram.

The cold will freeze our stares
We won't care...

Re: How do I display a dynamically generated ArrayList of custom objects in a datagrid in .NET 1.1?

joon _vh.23-Mar-07 2:57

joon _vh.

23-Mar-07 2:57

dataGridView1.AutoGenerateColumns = false; --> this prevents the columns to be made when you set a datasource and bind it. You have to define the columns yourself now, and the easiest way is doing it in Visual Studio.

dataGridView1.Columns["myCol"].Width = 100;

things like that

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

Re: How do I display a dynamically generated ArrayList of custom objects in a datagrid in .NET 1.1?

Vikram A Punathambekar23-Mar-07 3:15

Vikram A Punathambekar

23-Mar-07 3:15

joon vh. wrote:
dataGridView1.AutoGenerateColumns = false;

I'm using .NET 1.1, and System.Windows.Forms.DataGrid does not contain an AutoGenerateColumns or Columns property.

Cheers,
Vikram.

The cold will freeze our stares
We won't care...

Re: How do I display a dynamically generated ArrayList of custom objects in a datagrid in .NET 1.1?

joon _vh.23-Mar-07 3:19

joon _vh.

23-Mar-07 3:19

darn, I hoped you were using DataGridView, now I don't think I can help you any further.

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

Re: How do I display a dynamically generated ArrayList of custom objects in a datagrid in .NET 1.1?

MoustafaS23-Mar-07 3:34

MoustafaS

23-Mar-07 3:34

After setting the DataSource, try setting the header yourself.

------------------------------

"About : Islam ..."

Entering special colums to Datagrid

Starzfighter23-Mar-07 1:05

Starzfighter

23-Mar-07 1:05

I have a Dataset with two table. The first table has 5 columns. The second Table 3 columns.
Now i need to show only the columns 2 and 4 from the first table and 2 from the second table.
And these columns should be shown in the same Datagrid.
Is there any easy way to do this?
I tried to make a new Table.
DataTable dtab = new DataTable("coded");
foreach(DataColumn dc in firsttable.Columns)
{
dtab.Columns.Add(dc);
}

but when i tried that i get an error message that the column is already in another table.

Re: Entering special colums to Datagrid

joon _vh.23-Mar-07 2:38

joon _vh.

23-Mar-07 2:38

it might be easier to answer this question if you explained what kind of data is in the two tables and how you want it presented. Give some examples.

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

How to copy Bitmap

sandeepkavade23-Mar-07 1:00

sandeepkavade

23-Mar-07 1:00

i am having 2 bitmaps and i need to copy them into the third bitmap, how should i proceed plz help

Re: How to copy Bitmap

Guffa23-Mar-07 1:04

Guffa

23-Mar-07 1:04

Create a Graphics object for the third bitmap and use that to draw the other bitmaps onto it.

---
single minded; short sighted; long gone;

XmlSerializer

darkcalin23-Mar-07 0:42

darkcalin

23-Mar-07 0:42

Hi,

i have one object and i want to serialize with XmlSerializer. It is possible to see the field with no data?
EX:

<br />
class kuku<br />
{<br />
  int test;<br />
  int problem;<br />
}<br />
<br />
class main<br />
{<br />
 ....<br />
 kuku obj=new kuku();<br />
 obj.test=10;<br />
 XmlSerializer ser=new XmlSerializer(typeof(kuku));<br />
 StringWriter writer = new StringWriter(new StringBuilder());<br />
 ser.Serialize(writer,obj);<br />
 string s=writer.ToString(); <br />
  .....<br />
}<br />
<br />
and the s will contain <br />
<br />
   <kuku> <br />
     <test>10</test><br />
  </kuku><br />
<br />
and i want<br />
<br />
   <kuku> <br />
     <test>10</test><br />
     <problem></problem><br />
  </kuku><br />
<br />

how can help me???? C# will make me mad!!!! D'Oh! | :doh:

My brain is in fire Confused | :confused:

Re: XmlSerializer

stancrm23-Mar-07 1:28

stancrm

23-Mar-07 1:28

You will see test=10 and problem=0

class Program
{
  static void Main(string[] args)
  {
    kuku k = new kuku();
    k.test = 10;
    XmlSerializer xmlSerializer = new XmlSerializer(typeof(kuku));
    FileStream fileStream = new FileStream("test.xml", FileMode.Create);
    xmlSerializer.Serialize(fileStream, k);
    fileStream.Close();
  }
}

public class kuku
{
  public int test;
  public int problem;
}

Re: XmlSerializer

Stefan Troschuetz23-Mar-07 1:28

Stefan Troschuetz

23-Mar-07 1:28

What happens, if you explicitely set problem to its default value (0)?

"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning." - Rick Cook

www.troschuetz.de

Re: XmlSerializer

joon _vh.23-Mar-07 2:41

joon _vh.

23-Mar-07 2:41

I used the same code and it didn't generate any problems. I had to make the variables public though. Maybe you should try to fiddle around with their modifiers.

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

Problem with refreshing contents of form

Affan Toor23-Mar-07 0:23

Affan Toor

23-Mar-07 0:23

Hi!
I am using C# 2005 for my project, i am facing problem with refreshing contents of form. here is the scenario:

i have a DateTimePicker control on form, i want to use it like clock,
i.e. i created a thread which runs a timer, after 1 second im assignning the current time to the DateTimePicker.

Now the control should show the new value but it does'nt refresh.

i tried refresh(), validate() functions but no result...i even called the form_Load function but stil it displays old contents.

I am facing similar problems in some other forms too...

Please tell me wat im missing, do help me in ths regard. Thanks,

Regards,
Affan Toor

Re: Problem with refreshing contents of form

joon _vh.23-Mar-07 0:46

joon _vh.

23-Mar-07 0:46

you don't need any special function.
I tried this, and it works:

private void timer1_Tick(object sender, EventArgs e)
{
    dateTimePicker1.Value = DateTime.Now;
}

Make sure you set the timer interval to anything smaller than 1000 and that it is enabled (standard it is disabled)

Visual Studio can't evaluate this, can you?

public object moo<br />
        {<br />
__get { return moo; }<br />
__set { moo = value; }<br />
}

Re: Problem with refreshing contents of form

Affan Toor26-Mar-07 5:16

Affan Toor

26-Mar-07 5:16

joon vh.
THANKS ALOT FOR YOUR REPLY, IT REALLY HELPED ME ALOT IN SOLVING MY PROBLEM.
Thanks again, im looking forward for ur help in future too.

Regards,
Affan Toor

Re: Problem with refreshing contents of form

Stefan Troschuetz23-Mar-07 1:16

Stefan Troschuetz

23-Mar-07 1:16

You should never access a control (in your case the datetimepicker) from a thread other the one that created the control cause this cn cause unexpected behaviour e.g. freezing your app. For more information on this topic and how to correctly access controls from other threads take a look at this article What's up with BeginInvoke?[^]
In the special case of your datetimepicker, the simplest solution would be using a plain windows timer (the one from the forms namespace) since it is designed for a single-threaded environment where UI threads are used to perform processing.

Re: Problem with refreshing contents of form

Affan Toor26-Mar-07 5:13

Affan Toor

26-Mar-07 5:13

Stefan Troschuetz!
THANKS, ALOT FOR YOUR REPLY, IT REALLY HELPED ME ALOT IN SOLVING MY PROBLEM.
Thanks again, im looking forward for ur help in future too.

Regards,
Affan Toor

Re: Problem with refreshing contents of form

Stefan Troschuetz26-Mar-07 5:30

Stefan Troschuetz

26-Mar-07 5:30

My pleasure Smile | :)

Re: Problem with refreshing contents of form

Abolfazl Sheikhloo25-Mar-07 20:26

Abolfazl Sheikhloo

25-Mar-07 20:26

Hello,
Why you are using from datetimepicher?
you can use from javascript. it is very easy.

use this:

<span id="Time"></span>

<script language="javascript" type="text/javascript">
function setPcTime()
{
var myDate = new Date();

document.getElementById('Time').innerHTML = myDate.getHours()+':'+fix(myDate.getMinutes())+':'+fix(myDate.getSeconds());
setTimeout('setPcTime()',1000);
}
setPcTime();

function fix(timefix)
{
if(timefix < 10)return "0"+timefix;
else return timefix;
}
</script>

We Can Do Anything, If We Want It

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