C# Discussion Boards - CodeProject

DavidNohejl5-Dec-04 23:47

5-Dec-04 23:47

hi,
yes, try string.Trim(). Parametr can be array of characters you want to get rid of.

MSDN reference: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemstringclasstrimtopic2.asp[^]

best regards,
David 'DNH' Nohejl

Never forget: "Stay kul and happy" (I.A.)

El'Cachubrey6-Dec-04 0:09

El'Cachubrey

6-Dec-04 0:09

Thank

But i didn't wont to enum all unreadable characters in some array, and pass one as parameter to Trim. I just wish to invoke some single function to achive my result.

DavidNohejl6-Dec-04 0:29

6-Dec-04 0:29

String.Trim() is a single function Smile | :)

I doubt there is colection of whitespace - {space}. What does exactly what you want is reading XML with "ignore whitespace" flag. I'll look how it's done there... wait a moment Smile | :)

David

Never forget: "Stay kul and happy" (I.A.)

DavidNohejl6-Dec-04 1:01

6-Dec-04 1:01

hehe this is how they do it! I've found these functions in url parser, I doubt there is common collection or something like that. If you want single function write it by yourself Wink | ;)

ROTOR (Microsoft CLI implemenation) says:

<br />
//<br />
//  in the URL spec, it says that all whitespace should be ignored<br />
//  due to the fact that it is possible to introduce<br />
//  new whitespace and eliminate other whitespace<br />
//  however, we are only going to strip out TAB CR LF<br />
//  because we consider SPACE's to be significant.<br />
//<br />
<br />
PRIVATE inline BOOL IsInsignificantWhite(WCHAR ch)<br />
{<br />
    return (ch == TAB ||<br />
            ch == CR ||<br />
            ch == LF);<br />
}<br />
<br />
#define IsWhite(c)      ((DWORD) (c) > 32 ? FALSE : TRUE)<br />
<br />
PRIVATE void TrimAndStripInsignificantWhite(WCHAR *psz)<br />
{<br />
    ASSERT(psz);<br />
<br />
    if(*psz)<br />
    {<br />
<br />
        LPCWSTR pszSrc = psz;<br />
        LPWSTR pszDest = psz;<br />
        LPWSTR pszLastSpace = NULL;<br />
<br />
        // first trim the front side by just moving the source pointer.<br />
        while(*pszSrc && IsWhite(*pszSrc)) {<br />
            pszSrc++;<br />
        }<br />
<br />
        //<br />
        // Copy the body stripping "insignificant" white spaces.<br />
        // Remember the last white space to trim trailing space later.<br />
        //<br />
        while (*pszSrc)<br />
        {<br />
            if(IsInsignificantWhite(*pszSrc)) {<br />
                pszSrc++;<br />
            } else {<br />
                if (IsWhite(*pszSrc)) {<br />
                    if (pszLastSpace==NULL) {<br />
                        pszLastSpace = pszDest;<br />
                    }<br />
                } else {<br />
                    pszLastSpace = NULL;<br />
                }<br />
<br />
                *pszDest++ = *pszSrc++;<br />
            }<br />
        }<br />
<br />
        // Trim the trailing space<br />
        if (pszLastSpace) {<br />
            *pszLastSpace = L'\0';<br />
        } else {<br />
            *pszDest = L'\0';<br />
        }<br />
<br />
    }<br />
}<br />

David

Never forget: "Stay kul and happy" (I.A.)

How to remove the control box (The 3 buttons of a window at the top right corner) of a MDI Form?

El'Cachubrey6-Dec-04 19:51

El'Cachubrey

6-Dec-04 19:51

Great thank

ting6685-Dec-04 22:43

ting668

5-Dec-04 22:43

Hi~

How to remove the control box (The 3 buttons of a window at the top right corner) of a MDI Form?
I have set the formborderstyle to none. However, when I set the form to be maximized, the control box still in there.

How to remove them? Thanks

Re: How to remove the control box (The 3 buttons of a window at the top right corner) of a MDI Form?

Stefan Troschuetz6-Dec-04 1:11

Stefan Troschuetz

6-Dec-04 1:11

Did you try to set the Form.ControlBox property to false?

www.troschuetz.de

Re: How to remove the control box (The 3 buttons of a window at the top right corner) of a MDI Form?

Stanciu Vlad6-Dec-04 4:35

Stanciu Vlad

6-Dec-04 4:35

Try this three Form class properties ControlBox, MaximizeBox, MinimizeBox, you can hide an show them during run time as you wish Wink | ;)

I hope you understand...
By the way... visit http://nehe.gamedev.net[^]

help! Serializable

chinimimita5-Dec-04 22:34

chinimimita

5-Dec-04 22:34

im doing a remoting program. I'm just wondering why i always get this error message "An unhandled exception of type 'System.Runtime.Serialization.SerializationException' occurred in mscorlib.dll. Additional information: Because of security restrictions, the type clsServiceApp.CallContextString cannot be accessed. " on my second test in the client side.

Here's my code in the server:
public static void Main(string[] Args)
{
HttpChannel channel = new HttpChannel(8080);

ChannelServices.RegisterChannel(channel);

WellKnownServiceTypeEntry WKSTE = new WellKnownServiceTypeEntry(typeof(clsServiceApp.ContextBoundType),"TcpCBOService", WellKnownObjectMode.SingleCall);
RemotingConfiguration.RegisterWellKnownServiceType(WKSTE);

Console.WriteLine("Press enter to stop this process.");
Console.ReadLine();
}
---------------------------------
Here's my code in my middle tier:

public interface IContextBoundType
{
void ConnectToServer();
string SendToServer(string strValue);
}

public class ContextBoundType : ContextBoundObject//, IContextBoundType
{

private DateTime starttime;
private HttpChannel channel;

public ContextBoundType()
{
Console.WriteLine("#Connecting...");
starttime = DateTime.Now;
}

public void ConnectToServer()
{
channel = new HttpChannel();
ChannelServices.RegisterChannel(channel);

WellKnownClientTypeEntry remotetype = new WellKnownClientTypeEntry(typeof(ContextBoundType),"http://localhost:8080/TcpCBOService");
RemotingConfiguration.RegisterWellKnownClientType(remotetype);

// CallContext.SetData("ServerThreadData", new CallContextString(remotetype==null ? "Could not locate server" : "#Done Connecting..."));

}

public void DisConnectFromServer()
{

ChannelServices.UnregisterChannel(channel);

// CallContext.SetData("ServerThreadData", new CallContextString(remotetype==null ? "Could not locate server" : "#Done Connecting..."));

}

~ContextBoundType()
{
Console.WriteLine("ContextBoundType being collected after " + (new TimeSpan(DateTime.Now.Ticks - starttime.Ticks)).ToString() + " seconds.");
}

public DateTime GetServerTime()
{
return DateTime.Now;
}

public string SendMessageToServer(string strValue)
{
CallContext.SetData("ServerThreadData", new CallContextString(strValue));
// Console.WriteLine(strValue);
return strValue;
}

}

[Serializable]
public class CallContextString : ILogicalThreadAffinative
{

String _str ="";

public CallContextString(String str)
{
_str = str;
Console.WriteLine(str);
}

public override String ToString()
{
return _str;
}
}
-------------------------------------
Here's my code in the client side:

private void SendMessageToServer()
{
clsServiceApp.ContextBoundType();

clsServiceApp.ContextBoundType _service1 = new clsServiceApp.ContextBoundType();

lvwStatus.Items.Add("Sending messages to server...");
string s = _service1.SendMessageToServer(txtMessage.Text);
lvwStatus.Items.Add("Server already received message (" + ") <" + s.ToString() + ">");//_service.GetServerTime().ToLongTimeString() +
txtMessage.Text="";
}

private void Form1_Load(object sender, System.EventArgs e)
{
clsServiceApp.ContextBoundType _service = new clsServiceApp.ContextBoundType();
_service.ConnectToServer();
}

-chinimimita-

Save Drawing C#

mathon5-Dec-04 22:20

mathon

5-Dec-04 22:20

hello,

Can anybody explain me here how I can save some drawed rectangles in a jpg or bmp file?

thx

mathon

DavidNohejl6-Dec-04 0:06

6-Dec-04 0:06

hi mathon,
try something like:

<br />
// create new bitnmp<br />
Bitmap bmp = new Bitmap(100,50);<br />
Graphics g = Graphics.FromImage(bmp);<br />
<br />
// some drawing .... <br />
g.DrawString("myText",FontFamily.GenericMonospace,Brushes.Black,0,0);<br />
<br />
// save it as bmp file<br />
bmp.Save("filename.bmp");<br />

best regards,
David 'DNH' Nohejl

Never forget: "Stay kul and happy" (I.A.)

mathon6-Dec-04 3:01

mathon

6-Dec-04 3:01

Hello,

Thank you very much for your reply. Beside the drawed rectangles I have some labels on the form. Is it possible to save also these labels in this bmp file? If yes how does it work?

thx

mat

DavidNohejl6-Dec-04 10:44

6-Dec-04 10:44

mathon wrote:
Beside the drawed rectangles I have some labels on the form. Is it possible to save also these labels in this bmp file?

Don't you want to take a screenshot?
http://www.codeproject.com/csharp/ImageCapture.asp[^]

Never forget: "Stay kul and happy" (I.A.)

mathon6-Dec-04 5:45

mathon

6-Dec-04 5:45

Hello,

I tried it with something like that:

public void DrawStringRectangleF(int a, int b, int c, int d, System.Drawing.Color color, string text)
{
Bitmap bmp = new Bitmap(1400,1000);
Graphics g = Graphics.FromImage(bmp);

System.Drawing.SolidBrush myBrush = new System.Drawing.SolidBrush(color);
System.Drawing.Graphics formGraphics = this.CreateGraphics();
String drawString = text;
// Create font and brush.
Font drawFont = new Font("Verdana", 8);
SolidBrush drawBrush = new SolidBrush(Color.White);
// Create rectangle for drawing.
int x = a;
int y = b;
int width = c;
int height = d;
Rectangle drawRect = new Rectangle( x, y, width, height);
// Draw rectangle to screen.
Pen blackPen = new Pen(Color.Black);
//e.Graphics.DrawRectangle(blackPen, x, y, width, height);
g.FillRectangle(myBrush,drawRect);

GraphicsUnit units = GraphicsUnit.Pixel;
g.DrawString(drawString, drawFont, drawBrush, drawRect);

bmp.Save("filename.bmp");
}

But that does not work. The bmp-file is created but nothing in it. And when I want to open the file, an error occurs that the format is incorrect. Does anbody know what went wrong?? Frown | :(

patrick

DavidNohejl6-Dec-04 10:51