Hi I am developing a campera capture application. I am currently using EmguCV 2.0. I get an error with the following line of code :
Image<Bgr, Byte> image = capture.QueryFrame();
I have added all the required references of EmguCV like Emgu.CV,Emgu.CV.UI, Emgu.CV.ML, Emgu.Util, but still it gives a error saying :
Error 1 The name 'capture' does not exist in the current context C:\Documents and Settings\TLNA\my documents\visual studio 2010\Projects\webcamcapture\webcamcapture\Form1.cs 27 38 webcamcapture
I got this code from here. The full program code is given below:-
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Emgu.CV;
using Emgu.CV.UI;
using Emgu.CV.Structure;
using Emgu.CV.ML;
namespace webcamcapture
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void timer1_Tick(object sender, EventArgs e)
{
Image<Bgr, Byte> image = capture.QueryFrame();
pictureBox1.Image = image.ToBitmap(pictureBox1.Width, pictureBox1.Height);
}
}
}
Looks like you forgot to declare a variable for capture.
Edit: never having used emgu myself, i cant help much, but a couple mins on google and i stumbled across http://www.emgu.com/wiki/index.php/Tutorial#Examples which might help you set up the capture object properly.
Related
I have prepared a .net core console application (Framework version .Net Core 2.2) for sending email as a service. Right now its working completely fine with static html content being hardcoded into service method for generating email body string.
I am in seek of the code which provides me a solution to render a razor view to have a html string with the model data.
Tried to implement the RazorEngine dll in entity framework ver. 4.5. with below code
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using GenerateEmailUsingRazor.Model;
using RazorEngine.Templating;
namespace GenerateEmailUsingRazor
{
class Program
{
static readonly string TemplateFolderPath = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "EmailTemplates");
static void Main(string[] args)
{
var model = GetUserDetail();
var emailTemplatePath = Path.Combine(TemplateFolderPath, "InviteEmailTemplate.cshtml");
var templateService = new TemplateService();
var emailHtmlBody = templateService.Parse(File.ReadAllText(emailTemplatePath), model, null, null);
Console.WriteLine(emailHtmlBody);
Console.ReadLine();
}
private static UserDetail GetUserDetail()
{
var model = new UserDetail()
{
Id = 1,
Name = "Test User",
Address = "Dummy Address"
};
for (int i = 1; i <= 10; i++)
{
model.PurchasedItems.Add("Item No " + i);
}
return model;
}
}
}
Expected Result:
Console Application should render the razor view and provide me the resultant html string.
I've written a clean library Razor.Templating.Core that works with .NET Core 3.0, 3.1 on both web and console app.
It's available as NuGet package.
After installing, you can call like
var htmlString = await RazorTemplateEngine
.RenderAsync("/Views/ExampleView.cshtml", model, viewData);
Note: Above snippet won't work straight away. Please refer the below working guidance on how to apply it.
Complete Working Guidance: https://medium.com/#soundaranbu/render-razor-view-cshtml-to-string-in-net-core-7d125f32c79
Sample Projects: https://github.com/soundaranbu/RazorTemplating/tree/master/examples
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net.Http;
using System.Net.Http.Headers;
using RestSharp;
namespace ConsoleProgram
{
public class TryingOutRest {
public resttest Execute<resttest>(RestRequest request) where resttest : new() {
var client = new RestClient();
client.BaseUrl = new Uri("http://www.ocrwebservice.com");
client.Authenticator = new HttpBasicAuthenticator("apid", "apikey");
// the key and and id are put in as a string, but i removed them for the purposes of this.
var re_quest = new RestRequest();
re_quest.Resource = "/restservices/processDocument";
var response = client.Execute<resttest>(request);
}
}
}
So, hi, trying to get to grips with Rest api, Currently doing a project involving it and OCR, as you can probably tell. Tried this, i thought it would work fine, but I seem to have messed up dearly or some naming has changed and i cant find anything relevant in the autofill menu.
Anyone got any idea what's happening?
P.s. if questions about install, i used NuGet for that, so i assume there'd be no problem.
Try
using RestSharp.Authenticators;
This seems to be the namespace for HttpBasicAuthenticator now. (Github)
Open Nugetpackage manager and install RestSharp
Then you can use
using RestSharp.Authenticators
I'm trying to send an email with Azure and SendGrid. I have it all set up (I think) and my code is as per below, but the 'DeliverAsync()' method is not working and there is no 'Deliver()' option available.
Here are my using statements:
using System;
using System.Web;
using System.Web.UI;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Net;
using System.Net.Mail;
using SendGrid;
Here is my code: 'transportWeb.DeliverAsync(myMessage)' is showing as plain black text.
// Create the email object first, then add the properties.
var myMessage = new SendGridMessage();
myMessage.AddTo("d#gmail.com");
myMessage.From = new MailAddress("d#gmail.com", "John Smith");
myMessage.Subject = "Testing the SendGrid Library";
myMessage.Text = "Hello World!";
var apiKey = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
// create a Web transport, using API Key
var transportWeb = new Web(apiKey);
// Send the email, which returns an awaitable task.
transportWeb.DeliverAsync(myMessage);
I'm hoping someone has seen this before and knows the solution. There are a lot of similar problems online, but none I've found with a fix to this. I am using SendGrid v6.3.4. I have tried reverting to v6.3.3 but it didnt help. My stats in SendGrid show zero for everything, no emails sent, no requests, no bounces etc.
UPDATE:
I have tried creating a new Email class to remove any clutter and make this clearer, the 'DeliverAsync' method is still not being recognized after transportWeb.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Net;
using System.Net.Mail;
using SendGrid;
using System.Threading.Tasks;
namespace CPWebsite
{
public class Email
{
static async void Main()
{
try
{
// Create the email object first, then add the properties.
var myMessage = new SendGridMessage();
myMessage.AddTo("d#gmail.com");
myMessage.From = new MailAddress("d#gmail.com", "John Smith");
myMessage.Subject = "Testing the SendGrid Library";
myMessage.Text = "Hello World!";
var apiKey = "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX";
// create a Web transport, using API Key
var transportWeb = new Web(apiKey);
// Send the email, which returns an awaitable task.
await transportWeb.DeliverAsync(myMessage);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}
}
I have also tried changing var myMessage = new SendGridMessage(); to SendGridMessage myMessage = new SendGridMessage(); but no luck. Only the following using statements are showing as necessary.
using System;
using System.Net.Mail;
using SendGrid;
Im trying anything at this point!
Is this a console app currently? You'll need to await the method otherwise the console apps main thread will complete execution and cause the worker threads to be killed before they successfully deliver the message.
Try:
await transportWeb.DeliverAsync(myMessage);
Also add the following to your using statements:
using System.Threading.Tasks;
My project (Windows Service) was essentially synchronous with respect to specific thread where SendGrid was called, and hence what I had to do to make it work is to add .Wait() after the .DeliverAsync().
And so, try:
static void Main()
and later:
transportWeb.DeliverAsync(myMessage).Wait();
There is actually a little foot-note in SendGrid documentation eluding to this technique.
Cheers.
I don't know if this has been resolved but try using myMessage.Html for the body instead of myMessage.Text. Especially if you are using html in the body. I have pretty much the same setup and my code works fine.
I'm trying to work on ASP.NET 5 application. Here is a class and it looks good (no red curly underlines). But when I try to build, it gives error - SymmetricAlgorithm' does not contain a definition for 'Create'
using System;
using System.IO;
using System.Security.Cryptography;
namespace SalesBook
{
public static class Encryptor
{
private static byte[] EncryptString(string data)
{
byte[] byteData = Common.GetByte(data);
SymmetricAlgorithm algo = SymmetricAlgorithm.Create();
}
}
}
I'm using .net 4.6.1.
Any help?
This method has not been ported to .NET Core. The recommended alternative is to use the specific Create method associated with the algorithm you need:
var algorithm = Aes.Create();
On CoreCLR, it will automatically determine and return the best implementation, depending on your OS environement.
If you don't need .NET Core support, you can remove the dnxcore50/dotnet5.4 from your project.json.
Ok I am writing a simple code in Selenium Web Driver. What it does is:
Open URL Google.com
Enter 'abc' in search bar
Click the Images tab
I am using windows 8 - 64 bit and Visual Studio 2013. Browser is Firefox.
Here is the code I wrote:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;
using OpenQA.Selenium.IE;
namespace WebDriverDemo
{
class Program
{
static void Main(string[] args)
{
IWebDriver driver = new FirefoxDriver();
driver.Url = "http://google.com";
var searchBox = driver.FindElement(By.Id("gbqfq"));
searchBox.SendKeys("abc");
driver.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromMinutes(1));
var images = driver.FindElements(By.ClassName("q qs"))[0];
images.Click();
}
}
}
But I am getting an exception on the second last line of the code. Here is the exception:
Here is the Inspect Element result:
The exception message tells you exactly what the problem is. You cannot use multiple, or "compound," class names when using By.ClassName. A single class name cannot contain a space. If you want to use multiple class names, use By.CssSelector.
And, the issue is compound class. Currently selenium does not support this. You can use the cssSelector on the other hand to avoid this issue.
.q.qs
Note . before each class and see my answer related to this question here
Complete code as per OP's update:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using OpenQA.Selenium;
using OpenQA.Selenium.Firefox;
using OpenQA.Selenium.IE;
namespace WebDriverDemo
{
class Program
{
static void Main(string[] args)
{
IWebDriver driver = new FirefoxDriver();
driver.Url = "http://google.com";
var searchBox = driver.FindElement(By.Id("gbqfq"));
searchBox.SendKeys("abc");
//The following line is missing that is mandatory.
driver.FindElement(By.Name("btnG")).Click();
driver.Manage().Timeouts().ImplicitlyWait(TimeSpan.FromMinutes(1));
var images = driver.FindElements(By.CssSelector(".q.qs"))[0];
images.Click();
}
}
}
Using CSSSelector:
var images = driver.findElement(By.cssSelector(".q.qs"));
images.Click();
Using LinkText :
var images = driver.findElement(By.linkText("Images"));
images.Click();
Using Xpath :
var images = driver.findElement(By.xpath(".//*[#class='q qs' and .='Images']"));
images.Click();