I was using VS2015 with EntityFramework 6 for mapping mySQL Server 2012 database. Everything worked fine until upgrade theSQL Server to 2016 version. Now, when I update my database model, Visual Studio crash. Other problem is that sometimes I have that error while running the application:"TCP semaphore timeout period has expired".
Anyone knows issues about compatibility between EF6 and SQLServer 2016?
Thanks,
I have the following code to create an XML file. Why is it not doing a UTF-8 conversion on the string passed in?
using System.IO;
using System.Text;
using System.Xml;
namespace TestXmlWriter
{
class Program
{
private static readonly Encoding utf8NoBOM = new UTF8Encoding(false);
static void Main(string[] args)
{
Stream stream = new FileStream("c:\\temp\\test.xml", FileMode.Create, FileAccess.ReadWrite);
XmlWriter xmlWriter = new XmlTextWriter(stream, utf8NoBOM);
xmlWriter.WriteStartDocument();
xmlWriter.WriteStartElement("bear");
xmlWriter.WriteAttributeString("version", "CONSULTOR_TÉCNICO");
xmlWriter.WriteEndElement();
xmlWriter.WriteEndDocument();
xmlWriter.Flush();
stream.Close();
}
}
}Output:
<?xml version="1.0" encoding="utf-8"?><bear version="CONSULTOR_TÉCNICO" />
What do I have to do to get correct UTF-8 output?
thanks - dave
What we did for the last 6 months - Made the world's coolest reporting & docgen system even more amazing
Hi everyone,
I would like to implement screen recorder in C#. But it seems
Windows Media Encoder 9 Series and SDK are not available anymore.
What SDK should I use instead?
Thanks,
Yuliya
Hello,
Not sure what the best forum is for a Win32 API/KB breakage is, but starting here.
Recently KB4471329 was installed on our client computers as part of regular updates and compliance. When this KB is applied to our computers, it changes the way Help.ShowHelp works. Previously we were able to call this API in response to an F1 press and ask the API to show a specific CHM book that was part of a larger set of books and display a specific page. This allowed the software to launch help to a specific page, but allow the user to browse to any other book in our integrated setup.
We use the form:
Help.ShowHelp(this, @"../../../HelpFiles/Master.chm", @"SiteA.chm::/SiteA.htm");
After install of this KB, the behavior is changed. The help book is properly launched. The contents listing (tree view) shows the help topics on the left, but the main view shows a blank page with the following text:
"This page can’t be displayed. Make sure the web address //ieframe.dll/dnserrordiagoff.htm# ..."
If we remove the KB from the machine, then F1 works properly again and the content of the page is shown in the right hand view.
We've created a sample program that illustrates this and would like to provide it. Using it, you can see the effect before and after installing KB4471329. Your test machine needs to have KB4471329 (or equivalent) installed to see the problem. Remove it to see the problem undone. What is the best way to provide the sample?
We are hoping to bring this to the attention of Microsoft so that an updated patch could be created.
We do not see any workaround in the code that we can do to keep the overall integrated book displaying.
Lastly, here is a related posting that seems to point out the same issue:
Thanks,
Brian R.
In my C# project, while a UDP packet arriving, I need to log a timestamp with microsecond value.
Below is a sample function to use microsecond timestamp:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace datetimetest
{
class Program
{
static void Main(string[] args)
{
for(int i=0;i<10;i++)
{
long currentTick = DateTime.Now.Ticks;
Console.WriteLine("currentTick:{0}; timestamp:{1}", currentTick, new DateTime(currentTick).ToString("HH:mm:ss.ffffff"));
}
Console.ReadLine();
}
}
}I got below result:
currentTick:636844467783194613;timestamp:12:06:18.319461 currentTick:636844467783204613;timestamp:12:06:18.320461 currentTick:636844467783214613;timestamp:12:06:18.321461 currentTick:636844467783214613;timestamp:12:06:18.321461 currentTick:636844467783214613;timestamp:12:06:18.321461 currentTick:636844467783214613;timestamp:12:06:18.321461 currentTick:636844467783214613;timestamp:12:06:18.321461 currentTick:636844467783214613;timestamp:12:06:18.321461 currentTick:636844467783214613;timestamp:12:06:18.321461 currentTick:636844467783214613;timestamp:12:06:18.321461
My questions are:
1. On some PCs, the last 4 numbers would never change. In above case, the last 4 numbers are always "4613". Why?
2. Is there any better way to get the timestamp with microsecond value?
Any comments are highly appreciated.
Can we create object of interface? like below:
IDemo obj = new IDemo();
if no, then why not?
Note: I know we can create instance of interface.
I have deleted PagedList package from References while it is still in Package.config and when I reinstall it it dose not show in References any more
Also I try to restore NUGET package but I don't have the option of Enable Restore NUGET package
What should I do to restore this specific packages
Can we create object of interface? like below:
IDemo obj = new IDemo();
if no, then why not?
Note: I know we can create instance of interface.
Can we create object of interface? like below:
IDemo obj = new IDemo();
if no, then why not?
Note: I know we can create instance of interface.
Hi.
I've researching info on how to create a valid OCSP Request, and parsing it's corresponding OCSP Response. But so far, all I've been able to find is the use of 3rd party Tools like openSSL and certutil, or APIs like Bouncy Castle or PSPKI Module. I cannot use anything that it's not absolutely free (no OpenSource licensing). Just pure code.
I'm trying to see if I can construct the HTTP URL required for that; but it's been difficult to find any good sample.
Is there any good .NET sample or library available that could provide some guidance?
Thank you.
Hello everyone
i don't know if this forum is right place to write my question or not.
i create app on my pc to send and receive data using udp protocol. i use code to monitor data recieving on my server and i found some data lossing when sending from my pc.
I'm trying to solve this issue for long time but i fall
my pc internet connection is fiper optic
Can anyone help me to fix this problem and save my time, please?
these are codes that i use on my pc
code of sending:
public async Task LinesAsPara(LineCollection Lines)
{
CancelTask = false;
taskToken = new CancellationTokenSource();
CancellationToken ct = taskToken.Token;
if (Monitor.IsEntered(syncObj))
{
paused = false;
Monitor.Exit(syncObj);
}
WatchTest.Start();
Task task = new Task(() => {
foreach (var Oneline in ltlTextArea.TextArea.Lines)
{
try
{
CheckForIllegalCrossThreadCalls = false;
string pattern = @"(?:CACHE PEER|cache peer):\s*(\S+)+\s+(\d*)";
foreach (Match m in Regex.Matches(Oneline.Text, pattern))
{
Server = Dns.GetHostAddresses(m.Groups[1].Value)[0];
RemotePort = Convert.ToInt32(m.Groups[2].Value);
CachePeer = m.Groups[0].Value;
}
IPEndPoint ipeSender = new IPEndPoint(Server, RemotePort);
//The epSender identifies the incoming clients
EndPoint epSender = (EndPoint)ipeSender;
int ID = 0;
byte[] buf = new byte[32];
buf[0] = TYPE_PINGREQ;
// Self Program Use
buf[1] = 0x4D;
buf[2] = 0x43;
buf[3] = 0; // ping packet number
buf[4] = (byte)(Oneline.Index >> 8);
buf[5] = (byte)(Oneline.Index & 0xff);
// Multics Identification
buf[6] = (byte)ID; // unused must be zero (for next use)
buf[7] = (byte)('M' ^ buf[1] ^ buf[2] ^ buf[3] ^ buf[4] ^ buf[5] ^ buf[6]); // Multics Checksum
buf[8] = (byte)'M'; // Multics ID
//Port
buf[9] = 0;
buf[10] = 0;
buf[11] = (byte)((int)CachePort.Value >> 8);
buf[12] = (byte)((int)CachePort.Value & 0xff);
//Program
buf[13] = 0x01; //ID
buf[14] = 7; //LEN
buf[15] = (byte)'M';
buf[16] = (byte)'u';
buf[17] = (byte)'l';
buf[18] = (byte)'t';
buf[19] = (byte)'i';
buf[20] = (byte)'C';
buf[21] = (byte)'S';
//Version
buf[22] = 0x02; //ID
// if (REVISION<100) {
buf[23] = 3; //LEN
buf[24] = (byte)'r';
int REVISION = 81;
buf[25] = (byte)('0' + (REVISION / 10));
buf[26] = (byte)('0' + (REVISION % 10));
MainCSP CSPPeer = new MainCSP
{
//CachePort = (int)CachePort.Value,
MSec = Oneline.Index,
CachePeer = CachePeer
};
PeerList.Add(CSPPeer);
serverSocket.BeginSendTo(buf, 0, buf.Length, SocketFlags.None, epSender, new AsyncCallback(OnSend), null);
sendDone.WaitOne();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "SGSServerUDP1",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
});
task.Start();
WatchTest.Stop();
ShowWatch.Stop();
StopwatchBut.Text = string.Format("{0}D {1}h : {2}m : {3}.{4}s", WatchTest.Elapsed.Days, WatchTest.Elapsed.Hours, WatchTest.Elapsed.Minutes, WatchTest.Elapsed.Seconds, WatchTest.Elapsed.Milliseconds);
Form1.IsVoice = SpeakerSwitch.Value;
VoiceButtonItem.PerformClick();
DesktopAlert.Show();
DesktopAlert.CaptionText = string.Format("Lines Tester (ID:{0})", Form1.SessionID);
DesktopAlert.ContentText = string.Format("The test is completed." + Environment.NewLine + "||Working({0})||Syntax({1})||Other({2})||", WorkBtn.Counter.Text, SyntaxBtn.Counter.Text, OtherBtn.Counter.Text);
ltlStartButton.Enabled = true;
}
public void OnSend(IAsyncResult ar)
{
try
{
serverSocket.EndSend(ar);
sendDone.Set();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "SGSServerUDP2", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}code of recieving:
void Receive()
{
try
{
CheckForIllegalCrossThreadCalls = false;
//We are using UDP sockets
serverSocket = new Socket(AddressFamily.InterNetwork,
SocketType.Dgram, ProtocolType.Udp);
//Assign the any IP of the machine and listen on port number 1000
IPEndPoint ipEndPoint = new IPEndPoint(IPAddress.Any, (int)CachePort.Value);
//Bind this address to the server
serverSocket.Bind(ipEndPoint);
IPEndPoint ipeSender = new IPEndPoint(IPAddress.Any, 0);
//The epSender identifies the incoming clients
EndPoint epSender = (EndPoint)ipeSender;
//Start receiving data
serverSocket.BeginReceiveFrom(byteData, 0, byteData.Length,
SocketFlags.None, ref epSender, new AsyncCallback(OnReceive), epSender);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "SGSServerUDP3",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void OnReceive(IAsyncResult ar)
{
try
{
IPEndPoint ipeSender = new IPEndPoint(IPAddress.Any, 0);
EndPoint epSender = (EndPoint)ipeSender;
serverSocket.EndReceiveFrom(ar, ref epSender);
const int TYPE_PINGRPL = 4;
switch (byteData[0])
{
case TYPE_PINGRPL:
int result = PeerList.FindIndex(x => x.MSec == ((byteData[4] << 8) | byteData[5]));
if (result != -1)
{
WorkBtn.AddData(PeerList[result].CachePeer + "(" + ((byteData[4] << 8) | byteData[5]) + ")" + Environment.NewLine);
DesktopAlert.ContentText = string.Format("The test is completed." + Environment.NewLine + "||Working({0})||Syntax({1})||Other({2})||", WorkBtn.Counter.Text, SyntaxBtn.Counter.Text, OtherBtn.Counter.Text);
PeerList.RemoveAt(result);
}
break;
}
serverSocket.BeginReceiveFrom(byteData, 0, byteData.Length, SocketFlags.None, ref epSender, new AsyncCallback(OnReceive), epSender);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "SGSServerUDP4", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}Thank you
Hi,
we use two factor authentication to access Project Online PWA.
We are looking to interrogate/integrate the PWA data with a service call.
Is there a way of creating a 'device secret' and implement it into c# code, callable from a service?
Thanks
Stew