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Create a matrix and apply it to the Transform property on the graphics object.
Matrix matrix = new Matrix();
matrix.Rotate(45); // 45 Degrees
g.Transform = matrix;
// Now draw your image
My Blog ^
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How could i create a Matrix?
please give me the syntex that how to declare and use matrix class and what should be added to the header
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norm.net already showed you how to use the matrix class 
regards
modified 12-Sep-18 21:01pm.
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what header should be add to use Matrix class
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Hint: Google is your friend
This concept may be alien to you, but people are not here to do your work for you, you need to put some effort in yourself too! You have been provided with a VERY helpful hint which answers your quention entirely. I understand you simply want to know what namespace to import. As I do not know this from memory I went to google and typed Matrix Class[^]. Lo and behold 4th result is the MSDN documentation - Matrix Class[^].
Im sure you can click on one of these links to find its namespace.
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1.How to get Audio & Video Stream data using Directshow?
2.How to send,replay this data on network?
shumyla
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I have some old datafiles that need to be read at high speeds. They all use C strings and the file format can't be changed otherwise compatibility is lost with the closed source applications that write the files. How can I do this?
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How can i transfer same format?
i send file on network but on client side not recieved same format.
i used Myobj class
[Serializable]
public class MyObject
{
public int size;
public byte[] buffer=null;
public string str="hello string";
public MyObject()
{
}
Server send data on network as
public void senddata(string fname)
{
MyObject obj=new MyObject();
//Create a file stream from an existing file.
FileInfo fi=new FileInfo(fname);
FileStream fs=fi.OpenRead();
//Read 100 bytes into an array from the specified file.
// int nBytes;
byte[] ByteArray=new byte[(int)fs.Length];
obj.size=(int)fs.Length;
obj.buffer=ByteArray;
IFormatter formatter = new BinaryFormatter();
formatter.Serialize(st.BaseStream, obj);
st.BaseStream.Flush();
}
& on client side receieved data as
public void receivedata()
{
MyObject obj=new MyObject();
IFormatter formatter = new BinaryFormatter();
obj =(MyObject)formatter.Deserialize(at.BaseStream);
Encoding ascii = Encoding.ASCII;
Encoding unicode = Encoding.Unicode;
byte[] ByteArray=new byte[obj.size];
byte[] asciiBytes = Encoding.Convert(ascii, unicode, obj.buffer);
// at.BaseStream.Read(ByteArray, 0, 11);
FileStream fs1=File.Create("c:\\clock1.avi");
fs1.Write(obj.buffer,0,obj.size);
fs1.Close();
ptr(obj.size.ToString());
ptr(obj.str);
}
kindly tell default encoding technique or any other solution
from which we receieve same format on server & client side
Rashaida
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How would I look at what tables, queries and forms are in an Access DB using C#. I can "select" from a table, but how do I look at the database objects, "Alltables", Allreports etc.
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I’d like to remove HTML-formatting from a string. Any tip of an easy way to accomplish that?
_____________________________
...and justice for all
APe
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Sample code
IDataObject iData = Clipboard.GetDataObject();
if(iData.GetDataPresent(DataFormats.Html))
{
string a = (String)iData.GetData(DataFormats.Text);
}
Serdar YILMAZ
Senior Developer
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Tnx, I'll try it...
_____________________________
...and justice for all
APe
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Look into regular expressions. That is all I can say. I must go now.
/\ |_ E X E GG
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Hi, one of my project uses log4net. I add reference to log4net assembly (which is installed in GAC). I built the project and encountered no problem. However, when I run it console app, I keep getting:
<br />
log4net:ERROR XmlHierarchyConfigurator: Could not create Appender [rollingFile]<br />
of type [log4net.Appender.RollingFileAppender,log4net]. Reported error follows.<br />
System.IO.FileNotFoundException: File or assembly name log4net, or one of its dependencies, was not found.<br />
File name: "log4net"<br />
... bunch of stuff...<br />
LOG: Policy not being applied to reference at this time (private, custom, partia<br />
l, or location-based assembly bind).<br />
LOG: Post-policy reference: log4net<br />
LOG: Attempting download of new URL file:ng/bin/log4net.DLL.<br />
LOG: Attempting download of new URL file:ng/bin/log4net/log4net.DLL.<br />
LOG: Attempting download of new URL file:ng/bin/log4net.EXE.<br />
LOG: Attempting download of new URL file:ng/bin/log4net/log4net.EXE.<br />
I resolved the problem by changing Copy Local from False (which is default for GAC's assemblies) to True
Any idea why this is happenning? I have another console application which references log4net also, but does not requires "Copy Local" = True.
Thanks in advance!
Norman Fung
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we are doing project "Video conferencing".In which the file is send on the network perfectly,But when we recieve the file on the client side,File size and data is perfectly recieved but format is not showing.plz kindly tell me the default encoding technique which show exact format on client side.
I m waiting for ur positive response.
best regards
shumyla
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How can I convert a string of bits to a byte[] array.
Example "01010001" to a Byte[] array (not as an UTF or ASCII byte encoded ). I guess it would be false true false true false false flase true .....and then converted to a Byte Array but I figure out how to do it.
I figured out how to convert a Byte[] array to a string of bits using:
public string GetStrinRepresentation(Byte[] allBytes)
{
BitArray myBits = new BitArray(allBytes);
string tempStr=null;
string tempStr2=null;
for (int j=0; j <= myBits.Length-1; j++ )
{
/* if bit is true print "1" if false print "0" */
if (myBits[j])
{
tempStr2 = tempStr;
tempStr = "1" + tempStr2;
}
else
{
tempStr2 = tempStr;
tempStr = "0" + tempStr2;
}
}
return tempStr;
}
But I cant figure out how to do the opposite
Help Please?
Gordsh
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The simplest way is take 8 bits at a time and convert them from binary to decimal. Something like
private byte[] GetByteArray(string binaryText)
{
byte []arr = new byte[binaryText.Length / 8];
for (int i = 0; i<binaryText.Length; i+=8)
{
string currentByte = binaryText.Substring(i, 8);
arr[i%8] = Convert.ToByte(currentByte, 2);
}
return arr;
}
This does assume that the binary text's length will be a multiple of 8, if not, you have to pad the first byte with 0s.
Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro
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Just another possible solution:
private byte[] GetByteArray(string binaryText)
{
char[] c = binaryText.ToCharArray();
binaryText = new string(Array.Reverse(c));
BitArray ba = new BitArray(binaryText.Length);
for (int i = 0; i < binaryText.Length; i++)
ba[i] = binaryText[i] == '0' ? false : true;
byte[] result = new byte[binaryText.Length / 8];
ba.CopyTo(result, 0);
Array.Reverse(result);
return result;
}
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Thanks a million. They both worked. I find that depending on what I am doing sometimes I dont have to reverse the bits. Anyhow this was a big help as I was stuck.
Thanks again
SAG, CANADA
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I have a main form, call it A, which spawns another form B. When B spawns I want it brought to the front (easy), but if another program gets the focus, then the user switches back to A, I want B to be brought to the top if it was focused when the user switched to another program. Any easy way to do this? I have tried using the Enter/Leave/Activated/Deactivated events but it doesn't seem to work the way I think it should. If anything is unclear let me know. Thanks.
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can't you just use ShowDialog? that should make B be active even if you select A.
Rob
--
There are 10 kinds of people. Those who understand binary and those who don't.
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Rob Tomson wrote:
can't you just use ShowDialog?
I need to have access to A while B is open, otherwise I would.
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Its a tricky problem because u dont want the form snapping back to B when ur only activating A and not an external app.
Still, i think u can do it this way (havent tried it but it looks pretty sound):
Create a timer in the B Form with a low interval. 1-10 miliseconds will do.
When B looses focus (deactivates), start timer and in the Tick handler check for the static member Form.ActiveForm and stop ur timer. If ActiveForm is FormA then dont do anything. If ActiveForm gives u Null then the active window is no longer part of ur app and u should set a property in ur A Form, for example SnapBackToB to true.
Whenever A handles and Activate event, check for _snapBackToB and if true, activate Form B.
That should do it.
Oh, one other thing, when Form B activates, it should always check for SnapBackToB in form A and set it to False.
GL, and if things dont work at all as I/u expect please let me know :p
P.D. Its important u stop the timer after first tick because, even if it doesnt harm the algorithm, a timer running with that small interval may not let windows detect correctly ur idle app and u might have issues with power management, screensavers, etc.
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Could you elaborate on the ActiveForm static member? Should this be in A or B, and how/where should it be set/unset? Or are you referring to ActiveControl? Thanks.
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U dont set Form.ActiveForm to anything. Its a read only property so u can't set it anyways. U read its value to know which form in ur application is the Operating System's active window. If the value u read is Null that means the active window is an external window to ur application or it could be that there really is no active window.
System.Windows.Forms.Form.ActiveForm[^]
When ur timer in Form B (which has started when Form B has been deactivated) triggers the Tick event for the first time, the event Handler which u should include in Form B should check for the static memeber Form.ActiveForm as I posted before.
After that its just a question of style. U can either make a public get/set property in either FormA (SnapBackToB) or in FormB (SnapBackToMe) or whatever. In the first case, when A activates it would: 1) Check if Form B is open 2)check its own property and if true it would give focus to Form B. On the other hand if property was in FormB, FormA would check when it activates: 1) If Form B is open 2) If FormB's SnapBackToMe is true, it would give focus to B. As I said before, this is a question of style and there are many many ways to implement this.
Of course there r some details i havent touched like handling correctly what happens when Form B is closed and not only loosing focus (remember that the Deactivate event triggers when closing a form too) and u dont want ur SnapBackToX property to remain true when ur form B is closing....but u should be able to sort that out without too many problems.
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