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hi all,
I have an image processing homework, object tracking. But how can I get video stream from usb cam buffer. Before writing disk. usb cam use YUV format I need just Y (gray level) how can I get? thnx.
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Hi,
i use Visual C# express 2010 to develop my application.
I installed sql server 2008, I tried to generate the database from EDM and when I want to connect to sql server I can't find the provider of Microsoft Sql Server
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MemberDotNetting wrote: provider of Microsoft Sql Server
Why not? Is SQL Server running? Can you connect using the management studio?
MemberDotNetting wrote: I installed sql server 2008
Did you configure it after you was done installing it?
Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
Please stand in front of my pistol, smile and wait for the flash - JSOP 2012
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yes i can connect from mangemenet studio and i configured it
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Either your Visual Studio installation is corrupt or you might need to install vs2010 sp1
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hi all, i use c# windows form application
& i want to change latitude & longitude in google api v3 JavaScript code
var myLatlng = new google.maps.LatLng(30.050144, 31.240042);
according to
C# form latitude text box & longitude text box entered value
I can display the page in webbrowser control but it's static
how can i do this???
thanks in advance
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This is the third time you have asked this question but you have not explained which part does not work.
Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness
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var myLatlng = new google.maps.LatLng(30.050144, 31.240042);
this javascript code works but,
i want to replace the static values of latitude (30.050144) & longitude (31.240042)
in javascript code
with any value entered by user in latitude textbox
& longitude textbox
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this code i use in html page
<%--!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
--%>
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map_canvas { height: 100% }
function initialize() {
var myOptions = {
center: new google.maps.LatLng(30.04866, 31.23688),
zoom: 8,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById("map_canvas"),
myOptions);
var myLatlng = new google.maps.LatLng(30.050144, 31.240042);
var myOptions = {
zoom: 20,
center: myLatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
title: "Hello World!"
});
}
&
this code i have used in c# form
StringBuilder queryAddress = new StringBuilder();
queryAddress.Append("file:///C:/Users/mrx1000/documents/visual studio 2010/Projects/testgoogleapi3/testgoogleapi/HTMLPage1.htm");
webBrowser1.Navigate(queryAddress.ToString());
this image for my form in running
http://www.mediafire.com/?rqckg28xb4rlahb
as you see i didn't enter anything in latitude text box or longitude text box
i find away but it's very difficult in this example & when i use it gives me errors
// webBrowser1.DocumentText =
//"" +
//"function test(message) { alert(message); }" +
//"" +
//"";
what i should i do now?
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Your C# WinForm application with webbrowser control embedded in the form can use the following ways to achieve two-way communication between your C# code and the JavaScript code loaded by the webbrowser control.
From JavaScript to C#, follow these steps:
1. Create a member function in C#. In this example, suppose we have a function called "report_location":
public void report_location(double latitude, double longitude)
{
}
2. From your JavaScript code whenever you need to call the above C# function, do it like this:
window.external.report_location(...);
In the above function call the "... " represents the arguments you pass to the function. Use whatever arguments you need to use. For example if you are using Google Maps API and you add a listener to the map's click event, the function will be like this:
google.maps.event.addListener(
map,
'click',
function(event){
window.external.report_location(
event.latLng.lat(),
event.latLng.lng()
);
}
);
Your C# code will be able to get the clicked location's latitude/longitude.
From C# to JavaScript, follow these steps: (These will answer your specific question.)
1. In your JavaScript code create a function. In this example, suppose we have a function called "set_location":
function set_location(latitude, longitude){
var myLatlng = new google.maps.LatLng(latitude, longitude);
}
2. In your C# code whenever you need to call the above function to set the location, do it like this (suppose your webbrowser control is represented by the variable wb_map :
wb_map.Document.InvokeScript(
"set_location",
new string[]{
"30.050144",
"31.240042"
}
);
Of course if the numbers are stored in variables such as latitude , longitude , the above call will be
wb_map.Document.InvokeScript(
"set_location",
new string[]{
latitude.ToString(),
longitude.ToString()
}
);
Hope this answers your question. Happy programming!
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loyal ginger wrote: wb_map.Document.InvokeScript(
"set_location",
new string[]{
"30.050144",
"31.240042"
}
);
thanks for this simple & great answer but when i use this code i have this error
object reference not set to an instance of an object
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In my example, wb_map is the WebBrowser control on the Form. You need to replace it with the WebBrowser control in your application.
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loyal ginger wrote: In my example, wb_map is the WebBrowser control on the Form. You need to replace it with the WebBrowser control in your application
of course i replace wb_map by webBrowser1 control but i have error i don't know what causes this error
object reference not set to an instance of an object ????!!!!!!!!!!!
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Sorry I might have misunderstood you. In that case I really have no clue what went wrong. My original reply to your question was based on my error-free application, which happens to be very similar to your program. I don't have a complete picture of your program so it's hard for me to trouble shoot your program. Maybe somebody else here can give you a better answer? Thanks for your patience!
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when i put this line of code in webbrowser control it works thanks for all for answers
if (e.Url.Equals(webBrowser1.Url))
{
webBrowser1.Document.InvokeScript("initialize", new object[] { latitude, longitude });
}
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Hi,
I need help in writing code on establish a PPTP (VPN Tunnel)connection in c#.
Thanks
Kalyan
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What sort of help? You need to be much more specific with your questions. Nobody here is going to write your application for you but they will help you if you have problems with particular parts of your own code. If you have no idea how to approach this project then Google is your friend.
Binding 100,000 items to a list box can be just silly regardless of what pattern you are following. Jeremy Likness
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Hi,
In my code, I am counting the number of records (sent emails) that are older than one month. In order to do that, I am using following snippet.
int totalSentEmailsOlderThanMonth = emailSendingService.ListSentEmails().ToArray().Count(x => (DateTime.Now - x.SentDateTime).TotalDays > 30);
The reason I am using .ToArray() in my code as (DateTime.Now - x.SentDateTime).TotalDays cannot be translated in LINQ to SQL query so, by calling ToArray() , I am loading all records into the memory and then counting. But there are more than hundreds of records in my database and loading all the records into the memory just for counting is not efficient at all. So, would anyone please give me an alternative more efficient snippet that can be used in this scenario.
[[ By the way, emailSendingService.ListSentEmails() returns IQueryable<MyRecordType> ]]
Regards.
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You need to re-write the predicate a little bit (I don't have time to check this, so consider it not-very psuedo psuedo code) and it might error:
DateTime latestSendDate = DateTime.Now.AddDays(-30);
int totalSentEmailsOlderThanMonth = emailSendingService.ListSentEmails().Count(x => x.SentDateTime <= latestSendDate);
This removes the "calculation" from the LINQ query count predicate and puts it into a format it should be able to generate SQL from. There may be an out by one error (you get 29/31 days).
I think this will work, as I say, I don't have time to check it. Let me know if there are any problems.
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Owe, thats the cute idea. Thanks a loooot. Sure, it is a working code and it is working perfectly.
Thank you very much for your help.
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Hi Every one .. please if u could help me in write a program of SIFT algorithem in image processing i need it plz
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Try something and then post your questions here. No one is going to help you write any program from scratch.
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