control graphics capture - C# Discussion Boards

Guffa16-Sep-07 6:04

Guffa

16-Sep-07 6:04

xmen_xwk wrote:
but if i use replace then it replace all the "//" from string , i just want to remove this from last of string, not in all

There's nothing wrong in using the Remove method, but you are using it wrong. Read what I wrote again, and see if you understand it.

xmen_xwk wrote:
yeah i used that but its just return "System.Char[]" something like that

Then you don't use it correctly. It sounds like you are trying to use the ToString method on the array to get it as a string, but that will only get the type of the array. Use the string constructor that takes a char array.

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Xmen Real 16-Sep-07 7:24

Xmen Real

16-Sep-07 7:24

ok i did some changes
1.

string filename = new string(br.ReadChars(filelength));

2.remove the line that was removing last 3 characters

but it still taking 12 secs, its too much for me, any other changes that reduce the time???

here is the changed coding

FileStream fs = new FileStream(@"D:\art2.bar", FileMode.Open);
                        
            BinaryReader br = new BinaryReader(fs);           
            string chk = new string(br.ReadChars(4));
            
            int version = br.ReadInt32();
            int unknown = br.ReadInt32();
            byte[] uselessbytes = br.ReadBytes(264);
            int unknown1 = br.ReadInt32();
            int tnums = br.ReadInt32();
            long dir = br.ReadInt64();


            byte[] byts = br.ReadBytes(tnums);
             
            

            br.BaseStream.Position = dir;
            int dirnamelength = br.ReadInt32();
            dirnamelength *= 2;         

            string dirname = new string(br.ReadChars(dirnamelength));
           
            dirname = dirname.Replace("\0", "");
            dirname = dirname.Replace("\\", "");
            dirname = dirname.Replace(" ", "");
            int numofFilesindir = br.ReadInt32();
            for (int a = 0; a < numofFilesindir; a++)
            {
                dataGridView1.Rows.Add();
                dataGridView1[1, a].Value = br.ReadInt32();
                dataGridView1[2, a].Value = br.ReadInt32();
                
                br.BaseStream.Position += 20;
                dataGridView1[3, a].Value ="";
                int filelength = br.ReadInt32();
                filelength *= 2;
                string filename = new string(br.ReadChars(filelength));
               
                filename = filename.Replace("\0", "");
                filename = filename.Trim();
               
                dataGridView1[0, a].Value = filename;
            }

            br.Close();
            fs.Close();

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Insincere Dave16-Sep-07 8:11

Insincere Dave

16-Sep-07 8:11

The DataGridView is probably the bottleneck now, I tried a basic example of adding 10000 rows, it was slow adding them in a loop like your example but when I added them using Rows.AddRange() it was much quicker.

DataGridViewRow[] rows = new DataGridViewRow[10000];
for (int i = 0; i < 10000; i++)
{
	rows[i] = new DataGridViewRow();
	DataGridViewCell cell1 = new DataGridViewTextBoxCell();
	DataGridViewCell cell2 = new DataGridViewTextBoxCell();
	DataGridViewCell cell3 = new DataGridViewTextBoxCell();

	cell1.Value = i;
	cell2.Value = i * 10;
	cell3.Value = i * 100;
	rows[i].Cells.AddRange(cell1, cell2, cell3);
}
dataGridView1.Rows.AddRange(rows);

You may want to look into the the virtual mode and/or the data sources that can be used with the DataGridView.

Xmen Real 16-Sep-07 18:08

Xmen Real

16-Sep-07 18:08

hey yeah it worked, time reduced to 3 secs or less
thank you so much;););););) and thanks to all who helped me in reducing time

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Network programing

ali_reza_zareian15-Sep-07 22:54

ali_reza_zareian

15-Sep-07 22:54

Hi I want to write a client/server program that can connect to each other in internet network.
Client can connect server and vise versa.
I know socket programming and know that I should have an ip and a port number but internet network have routers and different servers how I can find other(client or server) computer!?

Yahoo messenger is a good sample in my idea. User can connect to yahoo server from every where!?
how can yahoo massenger can do that?!
D'Oh! | :doh:

Re: Network programing

Muammar©16-Sep-07 0:48

Muammar©

16-Sep-07 0:48

ali_reza_zareian wrote:
User can connect to yahoo server from every where!?
how can yahoo massenger can do that?!

Ever heard of Multicasting?

Smile: A curve that can set a lot of things straight!
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Re: Network programing

Dave Kreskowiak16-Sep-07 2:10

Re: control graphics capture

16-Sep-07 2:10

You have to tell the client what the IP of the server is. You really can't just broadcast "Hey, where are you??" and expect a response from a tiny little place in a network that spans millions of hosts.

ali_reza_zareian wrote:
Yahoo messenger is a good sample in my idea. User can connect to yahoo server from every where!?

Because Yahoo messenger is using a well-known set of servers that don't change they're IP addresses.

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control graphics capture

quaso115-Sep-07 22:50

quaso1

15-Sep-07 22:50

Hi.
I have this problem.
In my project I have a control which does not fit into the screen. So there are scrollbars that user can use. My application also paints something direct on the control. And now I want to save the control's surface to the image file. I google this code:

[DllImport("gdi32.dll")]<br />
		private static extern bool BitBlt(IntPtr hdcDest, int nXDest, int nYDest, int nWidth, int nHeight, IntPtr hdcSrc, int nXSrc, int nYSrc, System.Int32 dwRop);<br />
		[DllImport("User32.dll")]<br />
		public extern static System.IntPtr GetDC(System.IntPtr hWnd);<br />
		[DllImport("User32.dll")]<br />
		public extern static int ReleaseDC(System.IntPtr hWnd, System.IntPtr hDC);<br />
<br />
		private void foo() {<br />
			System.IntPtr srcDC = GetDC(this.ctrl.Handle);<br />
			Bitmap bm = new Bitmap(this.ctrl.Width, this.ctrl.Height);<br />
			Graphics g = Graphics.FromImage(bm);<br />
			System.IntPtr bmDC = g.GetHdc();<br />
			BitBlt(bmDC, 0, 0, bm.Width, bm.Height, srcDC, 0, 0, 0x00CC0020 /*SRCCOPY*/);<br />
			ReleaseDC(this.ctrl.Handle, srcDC);<br />
			g.ReleaseHdc(bmDC);<br />
			g.Dispose();<br />
			bm.Save("a.bmp");<br />
		}

But there is a problem because it capture only the visible part of the control. And I want to capture it all (also the part that is not visible due to actual scroll position).

Could you please help me what I can do?

0101000101110101
0110000101110011
01101111

Dave Kreskowiak16-Sep-07 7:05

Re: control graphics capture

16-Sep-07 7:05

quaso1 wrote:
But there is a problem because it capture only the visible part of the control.

Yep. You cannot capture what you cannot see, simply because Windoes does usually waste the time drawing it.

quaso1 wrote:
My application also paints something direct on the control.

This is the wrong approach. If you're going to draw something, draw it to a Bitmap object in memory, then you can draw that image to the visible part of the control in the control's paint event. If you need to save that image, just use the Save methods of the Bitmap object.

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2006, 2007

quaso116-Sep-07 7:08

quaso1

16-Sep-07 7:08

Well its rather complicated Smile | :)

There are also other usercontrols added to the component and I want to capture them also. I want to capture all the graphics and components on that control.
As I wrote, the code above just do it, but only the visible part of the parent control.

0101000101110101
0110000101110011
01101111

Re: control graphics capture

Dave Kreskowiak16-Sep-07 8:59

16-Sep-07 8:59

You really don't have any choice in the matter. You can only capture what you can see.

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2006, 2007

Get CPU Temperature

Johan Martensson15-Sep-07 22:10

Johan Martensson

15-Sep-07 22:10

I was looking for a way to get the temperature of my CPU and possibly the temperatures of my HD:s

To do this I've been playing around with WMI, the "Win32_TemperatureProbe" with "CurrentReading" seemed like a good place to start but I just cant get any value from it.

I got the code below from MS WMI Code Creator but it doesn't seem to work.

Am I going at this the wrong way and should I try something else?

using System;<br />
using System.Management;<br />
using System.Windows.Forms;<br />
<br />
namespace WMISample<br />
{<br />
    public class MyWMIQuery<br />
    {<br />
        public static void Main()<br />
        {<br />
            try<br />
            {<br />
                ManagementObjectSearcher searcher = <br />
                    new ManagementObjectSearcher("root\\CIMV2", <br />
                    "SELECT * FROM Win32_TemperatureProbe"); <br />
<br />
                foreach (ManagementObject queryObj in searcher.Get())<br />
                {<br />
                    Console.WriteLine("-----------------------------------");<br />
                    Console.WriteLine("Win32_TemperatureProbe instance");<br />
                    Console.WriteLine("-----------------------------------");<br />
                    Console.WriteLine("CurrentReading: {0}", queryObj["CurrentReading"]);<br />
                }<br />
            }<br />
            catch (ManagementException e)<br />
            {<br />
                MessageBox.Show("An error occurred while querying for WMI data: " + e.Message);<br />
            }<br />
        }<br />
    }<br />
}

Giorgi Dalakishvili15-Sep-07 23:04

Giorgi Dalakishvili

15-Sep-07 23:04

Have a look at this: Reading temperature values

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Dave Kreskowiak16-Sep-07 7:02

16-Sep-07 7:02

The problem with using WMI is that the manufacturers are not obligated to write providers for it. So, even though the class exists, there's no data to get because the manufacturer of the MoBo hasn't provided any drivers for WMI.

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Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

Urs Enzler16-Sep-07 20:56

Urs Enzler

16-Sep-07 20:56

Maybe you could use the Tool SpeedFan and get the value from it.
I'm using SpeedFan and LCD Studio to show the temperatures of my system on my G15 keyboard.

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how to use NGen to create Native Image ?

Johan Martensson16-Sep-07 21:29

Johan Martensson

16-Sep-07 21:29

I've been using SpeedFan and Everest but I was just curious to see if it could be done with .NET, but I guess it's more trouble than it's worth

hdv21215-Sep-07 12:59

hdv212

15-Sep-07 12:59

hi i want to use ngen to create native image, but i don't know how to use it and where native image of my application save and some information about it.
thanks.

Re: how to use NGen to create Native Image ?

Judah Gabriel Himango15-Sep-07 13:04

Judah Gabriel Himango

15-Sep-07 13:04

Once NGEN has been run on your app, simply run your regular application and the CLR will use the NGEN'd bits.

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Re: how to use NGen to create Native Image ?

Dave Kreskowiak15-Sep-07 15:00

how can made login user form application in c#.net?

15-Sep-07 15:00

No, you can't take the native image and copy it to other machines and expect it to work. It doesn't work that way.

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Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

mohammedali200615-Sep-07 5:47

mohammedali2006

15-Sep-07 5:47

salam sir;
how can made login user form application in c#.net?please help me.
thanks sir

mohammedali

Re: how can made login user form application in c#.net?

Ed.Poore15-Sep-07 7:02

Ed.Poore

15-Sep-07 7:02

Create a new form, drop two labels, two textboxes and two buttons on it. Arrange them how you wish, set "UseSystemPasswordChar" on the textbox to be the password etc voila. The actual code implementation will have to be down to you I'm afraid.

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Re: how can made login user form application in c#.net?

Kristian Sixhøj15-Sep-07 8:31

Kristian Sixhøj

15-Sep-07 8:31

An example of the code to check the entered credentials could be:

private void buttonLogin_Click(object sender, EventArgs e)
{
    if (txtPassword.Text == "abc123" && txtUsername.Text == "admin")
    {
        MessageBox.Show("You are now logged in!");
        // ...
    } 
    else 
    {
        MessageBox.Show("Wrong password or username!");
    }
}

The rest is up to you.

Virtual1ty
--
"Any fool can learn from his own mistakes, but a wise man learns from mistakes of others"

Re: how can made login user form application in c#.net?

Dave Kreskowiak15-Sep-07 11:30

Re: how can made login user form application in c#.net?

15-Sep-07 11:30

Please tell me you didn't post this with all sincerity??

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007

Kristian Sixhøj15-Sep-07 11:46

Kristian Sixhøj

15-Sep-07 11:46

What do you mean by that? I don't get it. (I'm Danish.)

Virtual1ty
--
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Re: how can made login user form application in c#.net?

Dave Kreskowiak15-Sep-07 15:00