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Also if you use a RichTextBox, they support Undo / Redo operations.
Gary
"A fellow with the inventiveness of Albert Einstein but with the attention span of Daffy Duck."
Tom Shales talking about Robin Williams
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Undo feature of RichTextBox has bug. Undo information is lost once you get the text using Text property i.e. richTextBox.Text.
Please refer the following article for detail.
Microsoft Knowledge Base Article-812943
Regards,
Jay.
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Hi,
A while back I was reading about passing parameters to C# properties and loving it. But I must have been dreaming because now (that I'm ready to use them) I can't find any mention of them. Was it only a dream?
Thx,
MAtt
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No, you can pass parameters like this (excuse the pun)
public MyObject this[int index]
{
get
{
return (MyObject) InnerList[index];
}
}
as you can see I've ripped this code from a CollectionBase derived class.
You can pass more than one param within the [] brackets
Gary
"A fellow with the inventiveness of Albert Einstein but with the attention span of Daffy Duck."
Tom Shales talking about Robin Williams
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hello forum,
i have defined a web service. If the remote operation is successful the method must return a type of datum (for example, struct Okstr) but if the remote operation is not successful the method must return another different type of datum (for example, ERRORstr).
How Can i do this with Web Services??
Is possible to throw exceptions via Web Services (like JAVA RMI or CORBA)?
A lot of thanks!!
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Yes, you can throw SoapExceptions using XML Web Services. One way of doing this if you do not want to throw exception, is to create error object of required type like ( Struct in this case ). If web service is successful return the data object else return your error object. In this case, the return type of your web method can be struct or any type you want.
Bhaskara
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thank you... but i dont know how can i define (with visual studio .Net) a web service that can return two different types.
In SUN RPC's I used a union with its discriminator to do this, but there's no union in C#.
Can you help me?
thanks in advance!
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Hi All,
Hopefully this is the right place to post this question. I have a project where I am creating SSRS reports on my machine and deploying them to another machine that has the databases on them along with SSRS. Only the 1.1 framework for dot net is on that machine. This one report where I've added a web application and am referencing a reportViewer.dll of which "Microsoft.Samples.ReportingServices" is the namespace is giving me this message. I'm kinda new to C# and SSRS so any help as to where to fix this problem would be of great help. Below is the error message. Thanks In Advance
Parser Error Message: File or assembly name ReportingServicesWebServer, or one of its dependencies, was not found.
Source Error:
Line 26: <assemblies>
Line 27: <clear>
Line 28: <add assembly="ReportingServicesWebServer">
Line 29:
Line 30:
Source File: G:\Application\MSSQL\Reporting Services\ReportServer\web.config Line: 28
Assembly Load Trace: The following information can be helpful to determine why the assembly 'ReportingServicesWebServer' could not be loaded.
=== Pre-bind state information ===
LOG: DisplayName = ReportingServicesWebServer
(Partial)
LOG: Appbase = file:///C:/Inetpub/wwwroot/WebPrintTest
LOG: Initial PrivatePath = bin
Calling assembly : (Unknown).
===
LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
LOG: Post-policy reference: ReportingServicesWebServer
LOG: Attempting download of new URL file:///C:/WINNT/Microsoft.NET/Framework/v1.1.4322/Temporary ASP.NET Files/reportserver_printtest/c126663c/7a3a6a93/ReportingServicesWebServer.DLL.
LOG: Attempting download of new URL file:///C:/WINNT/Microsoft.NET/Framework/v1.1.4322/Temporary ASP.NET Files/reportserver_printtest/c126663c/7a3a6a93/ReportingServicesWebServer/ReportingServicesWebServer.DLL.
LOG: Attempting download of new URL file:///C:/Inetpub/wwwroot/WebPrintTest/bin/ReportingServicesWebServer.DLL.
LOG: Attempting download of new URL file:///C:/Inetpub/wwwroot/WebPrintTest/bin/ReportingServicesWebServer/ReportingServicesWebServer.DLL.
LOG: Attempting download of new URL file:///C:/WINNT/Microsoft.NET/Framework/v1.1.4322/Temporary ASP.NET Files/reportserver_printtest/c126663c/7a3a6a93/ReportingServicesWebServer.EXE.
LOG: Attempting download of new URL file:///C:/WINNT/Microsoft.NET/Framework/v1.1.4322/Temporary ASP.NET Files/reportserver_printtest/c126663c/7a3a6a93/ReportingServicesWebServer/ReportingServicesWebServer.EXE.
LOG: Attempting download of new URL file:///C:/Inetpub/wwwroot/WebPrintTest/bin/ReportingServicesWebServer.EXE.
LOG: Attempting download of new URL file:///C:/Inetpub/wwwroot/WebPrintTest/bin/ReportingServicesWebServer/ReportingServicesWebServer.EXE.
--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:1.1.4322.573; ASP.NET Version:1.1.4322.573
later,
Clyde
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Hi there,
I was wondering if someone knows the C# equivalent for charCodeAt. This is een JScript method
that converts an string to Unicode and encodes this at base 16 (toString(16))
This project generates strong (WEP) key's for protecting WIFI access points.
Anyone got a clue??
Help would be appreciated!
This is the original JScript source
// generate a WEP key with the specified key length in bytes
//(5/13/16/29 bytes for 64/128/152/256-bit WEP
function gen_key(keyLengthInBytes) {<br />
for (i = 0; i < keyLengthInBytes; i++)<br />
{<br />
ascWEPkey += charArray[gen_prn()]; <br />
}<br />
<br />
for (i = 0; i < ascWEPkey.length; i++)<br />
{<br />
hexWEPkey += ascWEPkey.charCodeAt(i).toString(16);<br />
}<br />
}
This is what i got so far
private string ASCII_KEY, HEX_KEY;<br />
private char[] charArray = new char [95] { <br />
' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')','*', '+', ',', '-', '.', '/', <br />
'0', '1', '2', '3', '4', '5', '6', '7','8', '9', ':', ';', '<', '=', '>', '?', <br />
'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', <br />
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', <br />
'\'', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', <br />
'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~'};<br />
<br />
private void GenerateWEPKey(int KeyLength) {
for (int i = 0; i < KeyLength; i++) {<br />
ASCII_KEY += charArray[GenPseudoNo()];
}<br />
for (int i = 0; i < ASCII_KEY.Length; i++) {<br />
HEX_KEY += charCodeAt(ASCII_KEY,i);
}<br />
MessageBox.Show(HEX_KEY);<br />
}<br />
<br />
private int GenPseudoNo() {<br />
Random rdm = new Random();
return (int)Math.Floor(rdm.NextDouble() * charArray.Length);
}<br />
<br />
private string charCodeAt(string ASCII, int index) {<br />
System.Text.ASCIIEncoding AE = new System.Text.ASCIIEncoding ( );<br />
byte [ ] alphabetArray = AE.GetBytes ( ASCII );<br />
System.Text.StringBuilder sb = new System.Text.StringBuilder();<br />
<br />
for ( int x = 0; x <= alphabetArray.Length - 1; x++ ) {<br />
sb.Append ( string.Format ( "{0}", alphabetArray [ x ]));<br />
}<br />
return sb.ToString(index,2);<br />
}
Mark van den Broek
mvdbroek@kg.nl
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String's in .NET are Unicode. To covert to hex format, use the "X" as defined by the NumberFormatInfo class.
string val = 114.ToString("X");
int num = Int32.Parse("126", System.Globalization.NumberStyles.HexNumber);
- Nick Parker
My Blog | My Articles
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Hi there,
I was wondering if someone knows the C# equivalent for charCodeAt. This is een JScript method
that converts an string to Unicode and encodes this at base 16 (toString(16))
This project generates strong (WEP) key's for protecting WIFI access points.
Anyone got a clue??
Help would be appreciated!
Mark van den Broek
mvdbroek@kg.nl
This is the original JScript source
// generate a WEP key with the specified key length in bytes
//(5/13/16/29 bytes for 64/128/152/256-bit WEP
function gen_key(keyLengthInBytes) {<br />
for (i = 0; i < keyLengthInBytes; i++)<br />
{<br />
ascWEPkey += charArray[gen_prn()]; <br />
}<br />
<br />
for (i = 0; i < ascWEPkey.length; i++)<br />
{<br />
hexWEPkey += ascWEPkey.charCodeAt(i).toString(16);<br />
}<br />
}
This is what i got so far
private string ASCII_KEY, HEX_KEY;<br />
private char[] charArray = new char [95] { <br />
' ', '!', '"', '#', '$', '%', '&', '\'', '(', ')','*', '+', ',', '-', '.', '/', <br />
'0', '1', '2', '3', '4', '5', '6', '7','8', '9', ':', ';', '<', '=', '>', '?', <br />
'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', <br />
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '[', '\\', ']', '^', '_', <br />
'\'', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', <br />
'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', '{', '|', '}', '~'};<br />
<br />
private void GenerateWEPKey(int KeyLength) {
for (int i = 0; i < KeyLength; i++) {<br />
ASCII_KEY += charArray[GenPseudoNo()];
}<br />
for (int i = 0; i < ASCII_KEY.Length; i++) {<br />
HEX_KEY += charCodeAt(ASCII_KEY,i);
}<br />
MessageBox.Show(HEX_KEY);<br />
}<br />
<br />
private int GenPseudoNo() {<br />
Random rdm = new Random();
return (int)Math.Floor(rdm.NextDouble() * charArray.Length);
}<br />
<br />
private string charCodeAt(string ASCII, int index) {<br />
System.Text.ASCIIEncoding AE = new System.Text.ASCIIEncoding ( );<br />
byte [ ] alphabetArray = AE.GetBytes ( ASCII );<br />
System.Text.StringBuilder sb = new System.Text.StringBuilder();<br />
<br />
for ( int x = 0; x <= alphabetArray.Length - 1; x++ ) {<br />
sb.Append ( string.Format ( "{0}", alphabetArray [ x ]));<br />
}<br />
return sb.ToString(index,2);<br />
}
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I need to be able to run an application on a local pc that is behind a firewall and get the internet ip address for the computer. does anyone know how this can be done in .net?
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If you want the IP address of the computer behind the firewall (and you're outside), then you must define your protocol such that the IP address is included in the TCP (or UDP) message - not in the header (which is masked using the firewall's IP address with a NAT'd firewall). It probably won't do you much good, though, since 1) masked IP addresses are typically in the reserved range and don't route throughout the Internet, and 2) you still can't communicate with it directly.
Microsoft MVP, Visual C#
My Articles
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ok but, here's the thing i'm not outside i have a client app that runs on the client pc and i have a server app that needs the ip. the problem i had is that i need the client ip so i can route connection from the server to the client kind of like a one chat. the only restriction is i can't give out the server ip. so that leaves me with the only one option to have the server connect to client. so that's my situation.
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Well, if you intend on actually connecting to a client behind a firewall, make sure you set up port forwarding for it.
As for getting the IP, your only choice is to use a machine outside the local network. Something like make a HTTP query to whatsmyip.com and extract the result.
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That's a pretty dumb restriction - knowing an IP isn't a problem; it's making sure that the server is secure that is. Even if the server establishes a connection with the client, it's easy to determine the IP address (it's in the TCP/IP headers!). But you probably can't do anything about that.
If both the client and server are on the same LAN, you can use a multicast group. See the class documentation[^] for the MulticastOption class in the .NET Framework SDK for more details and a client/server example. This uses UDP to send datagrams (connectionless IP, unlike TCP) to a multicast IP address (reserved range; it's not the server's IP). Everyone in the multicast group can receive the message and process it.
Microsoft MVP, Visual C#
My Articles
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I would try this method that I used.
IPAddress ipAdress = IPAddress.Any;
IPEndPoint Enp = new IPEndPoint(ipAdress, 60001);
Socket m_soc = new Socket(AddressFamily.InterNetwork,SocketType.Stream, ProtocolType.Tcp);
m_soc.Bind(Enp);
//then do this to get the current IP&source port
System.Windows.Forms.MessageBox.Show(m_soc.LocalEndPoint.ToString());
Try that..should work in a x.x.x.x:x format
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Hi, where can I foud user interfaces samples on windows forms and web forms to see conventions, good practoces, and controls orders, etc.
Thank you!
La realidad no es más que impulsos eléctricos del cerebro - Morpheus
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hi,
I am developing a small chat (messenger) application in C#. There when i receive any message from others, i want my form to be bliked in the taskmanager like in yahoo messenger.
can any one tell me how can i get that?
thanks
Ravikumar
M.V.Ravikumar.
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sorry, not taskmanager. I want the blink of the window in taskbar.
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You'll want to P/Invoke the FlashWindow native API. See http://pinvoke.net/default.aspx/user32.FlashWindow[^] for details. To get the window handle used in the first parameter, use the Handle property of your main form, or Process.GetCurrentProcess().MainWindowHandle (which is the HWND of the main form that was specified in Application.Run either directly or indirectly).
To make it flash an X number of times, you can either use a timer or something like this (might be a good idea to thread it so that execution isn't blocked just to flash the window):
int flash = 3;
for (int i=0; i<flash * 2; i++)
{
Thread.Sleep(250);
FlashWindow(Handle, true);
}
Microsoft MVP, Visual C#
My Articles
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Thank you very much.
It is solving my problem.
regards
Ravikumar.
M.V.Ravikumar.
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Hello.
I read the article "Getting active TCP/UDP connections on a box" in coldeproject.com.
My application get all tcp connections and should close user selected connections.
But I have 2 problems:
problem 1 : I want to close slelected port from Listening ports.
I wrote below code for it ,but this don't work properly:
[DllImport("iphlpapi.dll",SetLastError=true)]
public extern static int SetTcpEntry(IntPtr pTcpRow);
IPHlpAPI32Wrapper.MIB_TCPROW Kill=new IPHlpAPI32Wrapper.MIB_TCPROW();
IntPtr current= globaltablepointer;
//globaltablepointer poit to start of array of MIB_TCPROW structure
current=(IntPtr)((int) current+(listBox1.SelectedIndex*24));
Kill.dwstate = MIB_TCP_STATE_DELETE_TCB;
// iterate the pointer of 4
current = (IntPtr)((int)current+4);
Kill.dwLocalAddr=(int)Marshal.ReadIntPtr(current);
current = (IntPtr)((int)current+4);
Kill.dwLocalPort=(int)Marshal.ReadIntPtr(current);
current = (IntPtr)((int)current+4);
Kill.dwRemoteAddr=(int)Marshal.ReadIntPtr(current);
current = (IntPtr)((int)current+4);
Kill.dwRemotePort=(int)Marshal.ReadIntPtr(current);
IntPtr pt=Marshal.AllocHGlobal(Marshal.SizeOf(Kill));
Marshal.StructureToPtr(Kill,pt,true);
IPHelp.SetTcpEntry(pt);
problem 2 : What event happen when a port is opening.Is there any
message that I hook on it.
thanks
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