Re: How to use COM components in .net application - C# Discussion Boards

Xmen Real 23-Mar-08 4:21

23-Mar-08 4:21

since you have binded it with table then it cannot be change (CMIMW)

but if you do change in datatable then it will work

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Re: Disable automatic sorting in DGV

baranils23-Mar-08 4:39

baranils

23-Mar-08 4:39

Hello
Thank you

But what do you mean ?

I DO make the changes directly in the datatable
It works fine since I do not make any programatic SORT to the DGV

The problem comes when I sort the column programaticaly in the DGV
After that the DGV stils sort automaticaly on ANY changes to the datatable or manualy by the user

So the question is HOW to avoid that the DGV sort automaticaly
If it is not possible I probably have to feed a DGV manualy without any bind to a datatable

Too bad !

Re: Disable automatic sorting in DGV

baranils23-Mar-08 11:17

baranils

23-Mar-08 11:17

Hello Xmen

Is it possible to sort the datatable instead DGV maybe this is the solution ??

Re: Disable automatic sorting in DGV

Xmen Real 23-Mar-08 14:01

Xmen Real

23-Mar-08 14:01

perhaps not, but you can do a trick
use Select(), it have a parameter named sortby, this function will return DataRow[], and then you can add those rows to your DGV

this will work as you want Wink | ;)

Re: Disable automatic sorting in DGV

baranils23-Mar-08 20:54

baranils

23-Mar-08 20:54

Hello

I will see what I can do with that

The goal is to allow the user to change a sequence on row using an order column
As long as the value are entered manualy, it works
If I do a sort (programaticaly) at any time, it stills work but the behaviuou of the DGV is changes : it sort now automaticaly

Considering that it is impossible to renu programaticaly because to renum I have to follow the order, so to follow the rows order in the DGV to acceed the datarow and gives a new number. If that new number directly affect the order in the DGV it can't works

I yhink this is a bug in DGV Unsure | :~

Re: Disable automatic sorting in DGV

baranils23-Mar-08 21:59

baranils

23-Mar-08 21:59

One step beyond !

Yes ok
I can work better using Tables.Select()

However the Dgv autosort is still a pain !

How to use COM components in .net application

mukkanti00722-Mar-08 21:20

mukkanti007

22-Mar-08 21:20

hi all,
I have a question on COM components.
After usage of com component how to clean up the com component ,

Can someone suggest me how can i proceed ,

Thanks
Mukkanti

Re: How to use COM components in .net application

sarvesh.upadhyay24-Mar-08 1:28

sarvesh.upadhyay

24-Mar-08 1:28

You have to explicitly clean the com object in your code.
Use override dispose function in class where you are using the com class and after using the com object clean it in your dispose function.

Sarvesh Upadhyay
Senior Software Engineer
Birlasoft India Ltd.
Microsoft Certified Professional Developer in Dotnet 2.0 Enterprise Application

keyboard to xbox controller

sakirah22-Mar-08 16:17

sakirah

22-Mar-08 16:17

Hello..

I have this code:

<br />
float x = 0.5f;<br />
float y = 1.0f;<br />
<br />
private void ProcessInput(float amountOfMovement)<br />
        {<br />
            Vector3 moveVector = new Vector3();<br />
<br />
            KeyboardState keys = Keyboard.GetState();<br />
            if (keys.IsKeyDown(Keys.Right))<br />
                moveVector.X += amountOfMovement;<br />
            if (keys.IsKeyDown(Keys.Left))<br />
                moveVector.X -= amountOfMovement;<br />
            if (keys.IsKeyDown(Keys.Down))<br />
                moveVector.Y -= amountOfMovement;<br />
            if (keys.IsKeyDown(Keys.Up))<br />
                moveVector.Y += amountOfMovement;<br />
<br />
            if (keys.IsKeyDown(Keys.Add))<br />
                x += 0.1f;<br />
                y += 0.1f;<br />
            if (keys.IsKeyDown(Keys.Subtract))<br />
                x -= 0.1f;<br />
                y -= 0.1f;<br />
<br />
            Matrix cameraRotation = Matrix.CreateRotationX(cameraAngles.X) * Matrix.CreateRotationZ(cameraAngles.Z);<br />
            cameraPosition += Vector3.Transform(moveVector, cameraRotation);<br />
<br />
            MouseState currentMouseState = Mouse.GetState();<br />
            if (currentMouseState.X != previousMouseState.X)<br />
                cameraAngles.Z -= amountOfMovement / 80.0f * (currentMouseState.X - previousMouseState.X);<br />
            if (currentMouseState.Y != previousMouseState.Y)<br />
                cameraAngles.X -= amountOfMovement / 80.0f * (currentMouseState.Y - previousMouseState.Y);<br />
            Mouse.SetPosition(Window.ClientBounds.Width / 2, Window.ClientBounds.Height / 2);<br />
        }

how to change it to gamepad code?

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Re: keyboard to xbox controller

User 665823-Mar-08 3:32

User 6658

23-Mar-08 3:32

Use the GamePad class instead?

There are enough samples over at http://creators.xna.com[^]

modified 12-Sep-18 21:01pm.

Current sorted row in DGV

baranils22-Mar-08 10:54

baranils

22-Mar-08 10:54

Hello is there any simple way to determine which column in a datagridview is actually sorted ?

Re: Current sorted row in DGV

Luc Pattyn22-Mar-08 14:02

Luc Pattyn

22-Mar-08 14:02

Hi,

DataGridView.SortedColumn is your friend.

Smile | :)

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Access Environment Variables: C#

Yasithl22-Mar-08 10:26

Yasithl

22-Mar-08 10:26

How to access the environment variables in C# ??

YRKL

Re: Access Environment Variables: C#

Giorgi Dalakishvili22-Mar-08 10:52

Giorgi Dalakishvili

22-Mar-08 10:52

I guess you don't know How to use google[^]

If you did, you would find answer to your question with a simple search.

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Question about how Sockets work

Jordanwb22-Mar-08 9:30

Jordanwb

22-Mar-08 9:30

I got a question about how sockets work it's kinda confusing.

public ServerConnection(IPAddress this_machine, UInt16 port)<br />
                    : base()<br />
                {<br />
                    this.init_connection = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);<br />
<br />
                    this.ip_end_point = new IPEndPoint(this_machine, (int)port);<br />
                    this.init_connection.Bind(this.ip_end_point);<br />
                    this.init_connection.Listen(2);<br />
<br />
                    this.init_connection.BeginAccept(new AsyncCallback(this.OnDataControlConnect), this.init_connection);<br />
                }<br />
<br />
                private void OnDataControlConnect(IAsyncResult ar)<br />
                {<br />
                    this.data_control = (Socket)ar.AsyncState;<br />
                    this.data_control.BeginReceive(this.data_control_buffer, 0, 4, SocketFlags.None, new AsyncCallback(this.OnDataControlReceive), this.data_control);<br />
<br />
                    this.init_connection.BeginAccept(new AsyncCallback(this.OnDataConnect), this.init_connection);<br />
                }

Now in the OnDataControlConnect method I cast the AsyncState method as a socket. Is the socket that was casted the same socket I passed in "this.init_connection.BeginAccept(new AsyncCallback(this.OnDataControlConnect), this.init_connection);"?

I hope I'm being clear enough I'm still trying to understand how sockets work.

Thanks.

Re: Question about how Sockets work

Jordanwb22-Mar-08 15:50

Jordanwb

22-Mar-08 15:50

I got another question: If the client shuts down, then disconnects the socket, how does the host know to disconnect as well?

I'm starting to get the hang of connecting, sending and receiving with sockets.

Thanks.

Re: Question about how Sockets work

Shy Agam23-Mar-08 9:57

Shy Agam

23-Mar-08 9:57

For your first question...
Yes... It's the same socket...

As for the second question, I'm not sure I understand...
But if I do, than you should do the following in the callback function you used when calling BeginReceive():

private void ReceiveCallback(IAsyncState state)
{
    .
    .
    .
    int receivedBytes = yoursocket.EndReceive(...);
   
    if (receivedBytes <= 0)
    {
        // Other side closed the connection...
        // Do as you wish...
    }
    else
    {
        // Analyze the received data
    }
    .
    .
    .
}

I wrote it the way I remember... So it may not be 100% accurate, but this is the main idea.

Good luck,
Shy

Re: Question about how Sockets work [modified]

Jordanwb23-Mar-08 12:44

Jordanwb

23-Mar-08 12:44

Thanks, your reply has helped me quite a bit.

modified on Sunday, March 23, 2008 9:35 PM

Re: Question about how Sockets work [modified]

Jordanwb24-Mar-08 6:49

Jordanwb

24-Mar-08 6:49

I've got another question. If a host has a socket open and BeginAccept has been called. Is it possible for a Client to be able to search for open sockets bound to a certain porta and detect that socket?

modified on Monday, March 24, 2008 12:55 PM

Change text of messageBox buttons

pcaeiro22-Mar-08 7:19

pcaeiro

22-Mar-08 7:19

I need to change te text of some messageBox buttons...

Can anyone help me on that?

PC

Re: Change text of messageBox buttons

Gareth H22-Mar-08 9:15

Gareth H

22-Mar-08 9:15

pcaeiro,

You'll need to explain a bit more what you want to do.

Regards,
Gareth.

Re: Change text of messageBox buttons

Giorgi Dalakishvili22-Mar-08 9:53

Giorgi Dalakishvili

22-Mar-08 9:53

You will need ti develop your own message box.

Giorgi Dalakishvili

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Re: Change text of messageBox buttons

Pete O'Hanlon22-Mar-08 9:59

Pete O'Hanlon

22-Mar-08 9:59

You have to write your own implementation, or use the new TaskDialog in Windows Vista (although I believe somebody has put together a .NET version that will run on XP as well - have a search here on Code Project for the article explaining it).

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

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Re: Change text of messageBox buttons

CPallini23-Mar-08 0:41

CPallini

23-Mar-08 0:41

See [^].

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

Re: Change text of messageBox buttons

pcaeiro23-Mar-08 1:42

pcaeiro

23-Mar-08 1:42

good example.

thanks for the help. Big Grin | :-D

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