How can i arrange the COM port names in ascending order - C# Discussion Boards

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Re: Capturing TAB event of a button Button

Martin#28-Aug-06 2:16

Martin#

28-Aug-06 2:16

Hello,

I think it's best to watch lostfocus event of the last control.

Then you can set Focus on the first Focus of the child Form.

Hope that helps you!

All the best,

Martin

Re: Capturing TAB event of a button Button

Kais4U28-Aug-06 2:25

Kais4U

28-Aug-06 2:25

Hi Martin,

Lost focus can happen even when the user select someother control via mouse. I need to implement TAB navigation. I cannot do this using Lost Control event.

Let me know if there is any other alternative.

Regards,
Kais

how to hide one column of gridlayout

sikandarhayat28-Aug-06 0:28

sikandarhayat

28-Aug-06 0:28

how to hide one column of gridlayout

how to check grid changed

sikandar

Re: how to hide one column of gridlayout

Nader Elshehabi28-Aug-06 2:34

Nader Elshehabi

28-Aug-06 2:34

Hello

What is a GridLayout?? Roll eyes | :rolleyes:

Maybe you Mean DataGridView, or Datagrid?

Regards

ContextMenuStrip

Kim061827-Aug-06 23:13

Kim0618

27-Aug-06 23:13

Hi,

I associate a multi-level contextMenu to a control by using contextMenuStrip. I associates right-click events
for each toolStripMenuItem, so there are many events registered
and it seems quite rather inefficiency. Are there any methods
similiar to the Toolbar that only one single click event is needed
for all buttons in the toolbar ?

Thanks

Regular expression match problem

kkadir27-Aug-06 22:39

kkadir

27-Aug-06 22:39

Hello everyone,

I have a regex object with "([A-Za-z0-9ığçöşüİĞÇÖŞÜ]{1})([A-Za-z0-9\sığçöşüİĞÇÖŞÜ])*$".. The pattern I want to implement is beginning with a letter/digit and continue with letter/digit/whitespace

But this pattern matches with something like 'a

Why is that and what can I do to correct my pattern..

Best regards!

PS: is there a way to make the input NOT contain two or more consecutive whitespaces ?

.:: Something is Wrong ::.

Re: Regular expression match problem

Guffa27-Aug-06 23:50

Guffa

27-Aug-06 23:50

You have forgotten the ^ to match the beginning of the text.

---
b { font-weight: normal; }

How can i arrange the COM port names in ascending order

engsrini27-Aug-06 22:22

engsrini

27-Aug-06 22:22

Hi

I am displaying the available COM ports in a combo box. But the system gives me the available port names in some order. i wish to arrange it in ascending order. I tried the following

<br />
string[] strPort = SerialPort.GetPortNames();<br />
<br />
            Array.Sort(strPort);<br />
            listBoxUpDownPort.Items.AddRange(strPort);<br />

But this do.. like this.
COM1
COM10
COM11
COM12
..
COM20
COM21
But i wanted to be like this
COM1
COM2
..
COM10
COM11
..
COM20
COM21

Thanks
Srini

Re: How can i arrange the COM port names in ascending order

chandler8328-Aug-06 0:53

chandler83

28-Aug-06 0:53

hi if u findout the result.....

plzzzzzzzzzzz let me know it... i am facing the similar problem here.......

if i did it first will let u know.........

Re: How can i arrange the COM port names in ascending order

stancrm28-Aug-06 1:03

stancrm

28-Aug-06 1:03

How about write a funtion to sort it :

static void Sort(string[] ports)
{
	int[] portsNumber = new int[ports.Length];
	
	for (int i = 0; i < ports.Length; i++)
		portsNumber[i] = int.Parse(ports[i].Replace("COM", ""));

	Array.Sort(portsNumber);

	for (int i = 0; i < ports.Length; i++)
		ports[i] = "COM" + portsNumber[i].ToString();
}

Re: How can i arrange the COM port names in ascending order

engsrini28-Aug-06 1:09

engsrini

28-Aug-06 1:09

Hi thanks for ur reply,
I also tried to sort like this

<br />
string[]  strPort=new string[] {"COM1","COM20","COM21","COM11","COM17","COM18","COM19","COM7"};<br />
            string strTemp = "";<br />
            for(int i=0;i<strPort.Length;i++)<br />
                for (int j = 0; j < i; j++)<br />
                {<br />
                    if (Convert.ToInt32(strPort[i].Substring(3)) < Convert.ToInt32(strPort[j].Substring(3)))<br />
                    {<br />
                        strTemp = strPort[j];<br />
                        strPort[j] = strPort[i];<br />
                        strPort[i] = strTemp;<br />
                    }<br />
                }<br />

How memory is released for the unmanaged objects

Rickey_Me27-Aug-06 22:17

Rickey_Me

27-Aug-06 22:17

If i have a class "ClassA" having instance of a unmanaged object in it. and when i created the instance of ClassA. if exception comes then how the unmanaged object release the memory as CLR just release the memory of the managed code/managed object

Rickey

Re: How memory is released for the unmanaged objects

mav.northwind28-Aug-06 4:28

mav.northwind

28-Aug-06 4:28

You'll have to encapsulate all the code where an exception can occur in a try/catch and release the memory in the catch case.

Regards,
mav

--
Black holes are the places where god divided by 0...

Re: How memory is released for the unmanaged objects

Scott Dorman1-Sep-06 13:17

Scott Dorman

1-Sep-06 13:17

You really should write an internal wrapper class that encapsulates the unmanaged resource. This class should have the responsibility for acquiring and releasing the resource properly and safely.

If you are using .NET 2.0, have a look at the SafeHandle[^] class, which may save you a lot of work and hassle.

Also, you need to make sure you implement IDisposable[^] on your wrapper (or the main class if you don't use the wrapper method). Check out http://www.codeproject.com/useritems/idisposable.asp[^] for more details on implementing the Dispose pattern.

Re: How memory is released for the unmanaged objects

Rickey_Me11-Sep-06 1:26

Rickey_Me

11-Sep-06 1:26

ok i am using .Net 1.1, Suppose i have not used any exception handler and also not implemented the idisposable interface then how the memory will manage.Will this be the memory leakage or unmanage object managed by CLR(if any possible way is there)?

Rickey

How to append the text in listbox or listview ?

Sri harini27-Aug-06 22:09

Sri harini

27-Aug-06 22:09

public void Append(bool IsRemote, string name, string message)
{
try
{

// listBox1.Font = new Font("Arial", 10, FontStyle.Bold);

listView3.Font = new Font("Arial",10,FontStyle.Bold);

listView3.ForeColor = Color.Blue;
// listBox1.ForeColor = Color.Red;
}

else
{
listView3.ForeColor = Color.Blue;
//listBox1.ForeColor = Color.Blue;
}

listView3.Items.Add(name + " : " +message);
//listBox1.Items.Add(name + " :" + message);

}
In windows mobile application, how to append the text in listbox or listview?
I tried listbox and listview but both exception coming:

NotSupportedException coming

which one i want to use? Anybody help me

Re: How to append the text in listbox or listview ?

X'Nork27-Aug-06 22:22

X'Nork

27-Aug-06 22:22

You could use somthing like this.

ListItem item = new ListItem(message,name);
listBox1.Items.Add(item);

Re: How to append the text in listbox or listview ?

Sri harini27-Aug-06 22:49

Sri harini

27-Aug-06 22:49

Thanks,
I tried the code, but listBox1.Items.Add(item) here NotSupportedException coming.
I am testing pocketpc 5.0 emulator using visualstudio2005.
That one listbox/listview can supported or not?.
listbox.selecteditem also not coming.

please help me,

Thanks&Regards

Suggestion required

<color>Aljechin 27-Aug-06 22:02

<color>Aljechin

27-Aug-06 22:02

Hi all,

I am a newbie in C#. Can you suggest me one or two books to start learning C#? I have fair knowledge of C++ and MFC. Also please suggest me some good articles which explains the basics of C# and teaches how to do simple tasks with C#. Thank you very much for your time.

Re: Suggestion required

Ed.Poore27-Aug-06 22:03

Ed.Poore

27-Aug-06 22:03

Just take a look through the beginner articles here. The best way to learn would be to think of a simple application you want to write, start writing it using Google etc to help you. If you become really stuck then post a question here.

I find you always learn more by hands-on-experience

As of how to accomplish this, have you ever tried Google?

C# Datagrid painting

Ashish_Sood27-Aug-06 21:48

Ashish_Sood

27-Aug-06 21:48

Hi,

I have a datagrid that is binded to a datatable (in form of a dataview). I have a requirement that when a particular column in the grid has a value (say 'stat'), then the entire row should be painted in red(the text should be red) else black.

I have extended DatagridColumnStyles for my custom columns. In the paint method, i check for the value in the dataview and accordingly set the forebrush.However, when the user sorts the grid, although it shows the dataview to be sorted, still, the value retrieved is incorrect. I use the row parameter of paint to get the value from the dataview.

Here is the sample code

protected override void Paint(Graphics g, Rectangle rect, CurrencyManager cm, int row, Brush backBrush, Brush foreBrush, bool rightAlign)
{
bool isStatRow = false;
DataRowView rView = null;
try
{
DataView dview = DataGridTableStyle.DataGrid.DataSource as DataView;
if( dview != null )
{
string strStat = dview.Table.Rows[row]["ORD_SCHEDULE_INTERVAL"] as string;
if( strStat != null )
{
string val = strStat.Trim().ToLower();
if( val.IndexOf("stat") == -1 )
isStatRow = false;
else
isStatRow=true;
}
}
}
catch(Exception ex)
{
}

g.FillRectangle(backBrush, rect);
string str = HelperClass.GetString(GetColumnValueAtRow(cm, row), NullText);

if( isStatRow )
{
g.DrawString(str, DataGridTableStyle.DataGrid.Font, new SolidBrush(Color.Red), rect);
}
else
{
g.DrawString(str, DataGridTableStyle.DataGrid.Font, foreBrush, rect);
}

}

The code works when the grid is first painted, but once the same is sorted, this returns me errorneous values and thus paints the color wrongly. I tried using currencymanager.Current also but to no use.

Any ideas???

Please respond

Ashish Sood

check if user (by sid) is member of group (by sid)

Goerlandt27-Aug-06 21:14

Goerlandt

27-Aug-06 21:14

Hello,

I have the SID of a user and the SID of a group. Now I need to check if the user is member of that group... So I think I should get the members and there SID of a group and then check with a for-loop if the SID is present. Is there anyone that knows how I could do that?

Listview.SelectedItems

Sri harini27-Aug-06 21:07

Sri harini

27-Aug-06 21:07

private void btnRemove_Click(object sender, EventArgs e)
{
ListViewItem item = listView1.SelectedItems[0];

if (item != null)
{
string fileid = item.Tag.ToString();
mcaller.removeShare(fileid);
}

btnRemove.Enabled = false;

}

that one i tried in windows application. successfull

But, now i am doing windows mobile application, the listview.SelectedItems
option not in.Any alternate option??

please give me the solution.

In windows mobile how to create columns in listview?

Anybody help me...

Re: Listview.SelectedItems

Nader Elshehabi28-Aug-06 2:48

Nader Elshehabi

28-Aug-06 2:48

Hello

Sri harini wrote:
Any alternate option??

Yes! Use SelectedIndices instead.

Sri harini wrote:
In windows mobile how to create columns in listview?

Same as you would in PC:

MyListView.Columns.Add("MyNewColumn");

NB.
There is an icon in MSDN at the left of each member of a class in the "all members" page, indecating that it's available in .Net compact framework or not. It resembles a PDA. Use those only.

Regards

Re: Listview.SelectedItems

Sri harini28-Aug-06 16:51

Sri harini

28-Aug-06 16:51

Hi, Thanks for your reply.
I tried that one.

ListViewItem item = listView1.SelectedIndices[0];

But error coming:

Cannot implicitly convert type 'string' to 'System.Windows.Forms.ListViewItem'

please help me...

Bi

Last Visit: 31-Dec-99 18:00 Last Update: 25-Jun-24 23:43

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