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button (Add, Delete, Shearch) with UserControle and saved entity framworks
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Did you have a question or what?
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And what is your question?
modified 20-Sep-20 21:01pm.
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That's a mid-term project, not a question.
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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Hi, I need example for writing and reading MD file in C# . Thanks
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Would you mind explaining what an "MD file" is?
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This is not a good question - we cannot work out from that little what you are trying to do.
Remember that we can't see your screen, access your HDD, or read your mind - we only get exactly what you type to work with.
So explain what an "MD" file is - the only one I'm aware of is a Markdown text file, and that's trivial to read:
string text = File.ReadAllText(pathToFile);
Then explain what problem you are having reading and writing it - we have no idea where you are stuck, so we really can't help you yet.
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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I need coffee.
Thanks.
Bastard Programmer from Hell 
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.
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Hi, MD file is Markdown, I want to create it then save some info. in it then read it
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Hi, I am a beginner in C# and programming in general. I have a problem getting started with C#, and I need some tips for one project I'm doing for myself.
In general I need a list of items in a combo box, and based on the selection in the combo box I need some variables to take different values, then make calculations based on these values and produce a numerical result into a TextBlock.
For now I understand that I should do it like this (but I am missing a lot):
1. I made a class like this (in MainWindow.xaml.cs):
class Concrete
{
public double CompressionStrength { get; set; }
public double YoungModulus { get; set; }
}
create some instances of this class like this:
Concrete C37 = new Concrete();
C37.ConpressionStrength = "30";
C37.YoungModulus = "21"
Concrete C30 = new Concrete();
C37.ConpressionStrength = "25";
C37.YoungModulus = "21"
2. I made a combo box in MainWindow.xaml
<ComboBox x:Name="ConcreteList">
</ComboBox>
3. Now I need to somehow populate the combo box with different instances of my class, like:
<ComboBox.item1 = C37/>
ComboBox.item2 = C30/>
4. Then I need to create some variables based on the selection in the combo box and make some calculations, for example:
if TextBoxSelection=C37;
double a = 10;
double b = 20;
double CompressionStrength = C37.CompressionStrength;
double c = a*b*CompressionStrength;
else ....
end if
5. And then I just need to print value "c" to a TextBlock in the WPF window.
Now I need to ask for some general guidance about this because I am a little stuck...
1. How do I populate combo box in MainWindow.xaml with names of my class instances that are in the MainWindow.xaml.cs?
2. How do I create a numerical variable from the class property and perform calculatons on it?
3. Is it even doable this way / what would be your suggestions for making this work?
I would be grateful for any comments.
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Hi all,
Scenario: a non thread-safe .net assembly is accessed by a C# web service (multi-thread) and returns corrupted data when concurrent requests are issued due to sharing non safe data. The C# web service is consumed by a Java web site.
Actual solution: the C# web service implements by code a FIFO - First In First Out queue for the requests. With this approach, every web service call that redirects to the assembly go to the queue and is attended when the previous request to the assembly is finished. The assembly logic's performance is good and Users most time do not fell the delay caused by waiting in the queue. However it was a contingency solution and it is far to be the ideal solution.
Alternative options: load the assembly dynamically for each request and access the needed method at run-time
Drawbacks:
The code below compiles but there are syntax troubles:
Assembly pb_dll = Assembly.LoadFile("C:\\inetpub\\wwwroot\\rsasmPBService\\bin\\rs4pb2017asm.dll");
Type memberServicing = pb_dll.GetType("rs4pb2017asm.n_eas_member_servicing_iis");
string [] args = new string[2];
args[0] = orgId;
args[1] = contactId;
object memberServ_Instance = Activator.CreateInstance(memberServicing);
object Result = memberServicing.InvokeMember("getmemberoptions_iis", BindingFlags.Default |
BindingFlags.InvokeMethod,null, memberServ_Instance, args );
Return Result ;
The assembly returns a data structure that each element of the structure is an array. The elements have different data types. The structure has to be sent back to the caller.
QUESTIONS:
1. How to convert/cast the object "Result" into the structure format ?
2. In the above syntax, the arguments are passed to the assembly in an array of strings. However there are methods that expect to receive string and integer data as argument, for instance. So what could be a syntax to pass individual arguments, not an array?
Thank you for the help.
Paulo
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Serialize to and from XML (or JSON?) and use that for "data transfer".
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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Sorry. Caffeine-deficiency brainfart. Meant it for OP anyway. 
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
modified 25-May-18 22:06pm.
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Why?
You in a habit of "marshalling" "web services"?
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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how can create a Newton Raphson method program using C# that allows the user to input the values which include trigonometry,exponential,polynomials and product of any of the three
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Well, before you can write a program for it, you have to understand it. This is my contribution toward your ultimate goal.
Newton's method - Wikipedia[^]
I wonder why instructors continue to give homework assignments that can easily be resolved by a minimalist google search...
".45 ACP - because shooting twice is just silly" - JSOP, 2010
-----
You can never have too much ammo - unless you're swimming, or on fire. - JSOP, 2010
-----
When you pry the gun from my cold dead hands, be careful - the barrel will be very hot. - JSOP, 2013
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Because the instructors are almost as lazy as some of the students they give assignments to?
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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You'll enjoy NR; it doesn't always converge to an answer.
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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Hi everyone,
I've been trying to implement Haar Cascade car classifer lass in order to detection vehicles in a video. However I can't seem to find anything on this. I'm new to Haar Cascade and EmguCV. Any help would be much appreciated, thanks in advance. All I have been able to find so far is:
public class HaarCascade : ICloneable
{
String path = @"C:\Users\Dylan\car.xml";
HaarCascade cascade1 = HaarCascade.FromXml(path);
Image<bgr, byte=""> frame = new Image<bgr, byte="">(bitmap);
Image<gray, byte=""> grayFrame = frame.Convert<gray, byte="">();
var cars = haar.DetectMultiScale(grayFrame, 1.5, 20, new System.Drawing.Size(10, 10), new System.Drawing.Size(80, 80));
foreach (var car in cars);
frame.Draw((Rectangle)car, new Bgr(255.0, 0, 0), 2);
}
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How did you ever hear of "Haar Cascade" if you "can't seem to find anything on (it)"?
I only found 587,000 references.
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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I got 1,030,000!
(I'm guessing he used Bing) 
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
AntiTwitter: @DalekDave is now a follower!
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You're bang on about Bing.
"(I) am amazed to see myself here rather than there ... now rather than then".
― Blaise Pascal
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