Develop Reference

Methods return type in C#

i am using a method to retrieve data from an OPC DA server using TitaniumAS packages, the problem i am having is that i have a lot of tags to read/write so i have to use methods.
The WriteX method works fines as it doesnt have to return anything but the read does not, well it does its job, it reads but i cannot use that data outside of the method because it was a void method, when i tried to use it as a String method (that's the type of data i need) it says :
Error CS0161 'ReadX(string, string)': not all code paths return a value
PS : note that i am just a beginner in C#
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TitaniumAS.Opc.Client.Common;
using TitaniumAS.Opc.Client.Da;
using TitaniumAS.Opc.Client.Da.Browsing;
using System.Threading;
using System.Threading.Channels;
using Async;
namespace OPCDA
{
class Program
{
static void Main(string[] args)
{
TitaniumAS.Opc.Client.Bootstrap.Initialize();
Uri url = UrlBuilder.Build("Kepware.KEPServerEX.V6");
using (var server = new OpcDaServer(url))
{
server.Connect();
OpcDaGroup group = server.AddGroup("MyGroup");
group.IsActive = true;
Ascon ascon1 = new Ascon();
ReadX("Channel1.Ascon1.AsconS", ascon1.ALM);
Console.WriteLine("value = {0}", ascon1.ALM);
void WriteX(String Link, String Ascon)
{
var definition1 = new OpcDaItemDefinition
{
ItemId = Link,
IsActive = true
};
OpcDaItemDefinition[] definitions = { definition1 };
OpcDaItemResult[] results = group.AddItems(definitions);
OpcDaItem tag = group.Items.FirstOrDefault(i => i.ItemId == Link);
OpcDaItem[] items = { tag };
object[] Values = { Ascon };
HRESULT[] Results = group.Write(items, Values);
}
string ReadX(String Link, String read)
{
var definition1 = new OpcDaItemDefinition
{
ItemId = Link,
IsActive = true
};
OpcDaItemDefinition[] definitions = { definition1 };
OpcDaItemResult[] results = group.AddItems(definitions);
OpcDaItemValue[] values = group.Read(group.Items, OpcDaDataSource.Device);
read = Convert.ToString(values[0].Value);
}
}
}
}
}

the first step was to state the return like this :
return Convert.ToString(values[0].Value) instead of read = Convert.ToString(values[0].Value)
then go up and use that value with my variable :
ascon1.ALM=ReadX("Channel1.Ascon1.AsconS");

Find category's parameter's and combine them in the right order

This code filters elements of certain category and finds and concatenates parameters although what needed is something a little more complex.
First of all, a person needs to be able to choose a category (out of a drop down list) or search and find the necessary ones.
And the second thing is that a user is supposed to specify what parameters he would like to combine (we have shared parameters txt fyi) and choose the order in which they are going to follow one another. Any resource on it or something similar to it would help greatly!
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.Attributes;
using Autodesk.Revit.UI.Selection;
namespace CombineParameters
{
[Transaction(TransactionMode.Manual)]
public class Class : IExternalCommand
{
public Result Execute(ExternalCommandData commandData,
ref string message,
ElementSet elements)
{
UIApplication uiapp = commandData.Application;
UIDocument uidoc = uiapp.ActiveUIDocument;
//Application app = uiapp.Application;
Document doc = uidoc.Document;
//Create Filtered Element Collector and Filter
FilteredElementCollector collector = new FilteredElementCollector(doc);
ElementCategoryFilter filter = new ElementCategoryFilter(BuiltInCategory.OST_DuctFitting);
//Applying Filter
IList <Element> ducts = collector.WherePasses(filter).WhereElementIsNotElementType().ToElements();
foreach (Element e in ducts)
{
//Get Parameter values
string parameterValue1 = e.LookupParameter("AA").AsString();
string parameterValue2 = e.LookupParameter("BB").AsString();
string parameterValue3 = e.LookupParameter("CC").AsString();
string newValue = parameterValue1 + "-" + parameterValue2 + "-" + parameterValue3;
using (Transaction t = new Transaction(doc, "Set Parameter name"))
{
t.Start();
e.LookupParameter("DD").Set(newValue).ToString();
t.Commit();
}
}
return Result.Succeeded;
}
}
}

You want to combine user selected parameters in a specific order? Why dont you use a simple windows form gui.
Example
command.cs
#region Namespaces
using Autodesk.Revit.ApplicationServices;
using Autodesk.Revit.Attributes;
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using Autodesk.Revit.UI.Selection;
using System;
using System.Collections.Generic;
using System.Diagnostics;
#endregion
namespace combineParameters
{
[Transaction(TransactionMode.Manual)]
public class Command : IExternalCommand
{
public Result Execute(
ExternalCommandData commandData,
ref string message,
ElementSet elements)
{
UIApplication uiapp = commandData.Application;
UIDocument uidoc = uiapp.ActiveUIDocument;
Application app = uiapp.Application;
Document doc = uidoc.Document;
Form1 form = new Form1(doc);
//Show Dialouge form
form.ShowDialog();
return Result.Succeeded;
}
}
}
Forms1.cs
using Autodesk.Revit.DB;
using Autodesk.Revit.UI;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace combineParameters
{
public partial class Form1 : System.Windows.Forms.Form
{
//Class variable
Document revitDoc { get; set; }
public Form1(Document doc)
{
InitializeComponent();
this.revitDoc = doc;
//Create a list of the parameters you want your user to choose from
List<string> stringParameters = new List<string>
{
"textParameter1",
"textParameter2",
"textParameter3",
"textParameter4"
};
//Add list to comboboxes on form
foreach (string parameterName in stringParameters)
{
comboBox1.Items.Insert(0, parameterName);
comboBox2.Items.Insert(0, parameterName);
comboBox3.Items.Insert(0, parameterName);
}
}
private void button1_Click(object sender, EventArgs e)
{
FilteredElementCollector collector = new FilteredElementCollector(revitDoc);
ElementCategoryFilter filter = new ElementCategoryFilter(BuiltInCategory.OST_DuctFitting);
//Applying Filter
IList<Element> ducts = collector.WherePasses(filter).WhereElementIsNotElementType().ToElements();
using (Transaction t = new Transaction(revitDoc, "Set Parameter name"))
{
//Use a try and catch for transactions
try
{
t.Start();
foreach (Element duct in ducts)
{
//Get Parameter values
string parameterValue1 = duct.LookupParameter(comboBox1.Text).AsString();
string parameterValue2 = duct.LookupParameter(comboBox2.Text).AsString();
string parameterValue3 = duct.LookupParameter(comboBox3.Text).AsString();
string newValue = parameterValue1 + "-" + parameterValue2 + "-" + parameterValue3;
//do not need .ToString() when setting parameter
duct.LookupParameter("NewParameter").Set(newValue);
}
t.Commit();
}
//Catch with error message
catch (Exception err)
{
TaskDialog.Show("Error", err.Message);
t.RollBack();
}
}
}
}
}
Snip of this example inside Revit:
Example photo

Trying to create a program using linked list for character counting?

I am trying to create a program that is a character counter using
a linked list and I am struggling. I have to program this in C#. If anyone can see a solution please tell me. I am have troubling using a linked list with nodes trying to show the results of counting characters. What am I missing? What do I need to add? By the way I am using visual works to run my code.
(First file)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace ConsoleApp17
{
class CharacterFrequency
{
private char ch;
private int frequency;
public char Ch
{
get { return ch; }
set { ch = value; }
}
public int Frequency
{
get { return frequency; }
set { frequency = value; }
}
}
}
(Second file)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace ConsoleApp17
{
class Program
{
static void Main(string[] args)
{
int ch;
const int InputFile = 0;
const int OutputFile = 1;
StreamReader reader = null;
StreamWriter writer = null;
//Declaring Linked List
CharacterFrequency obj = new CharacterFrequency();
LinkedList list = new LinkedList<CharacterFrequency>();
//To read the characters in the Input File.
reader = new StreamReader(File.OpenRead(args[InputFile]));
//To insert text through the loop.
while ((ch = reader.Read()) != -1)
{
//Creating my linked list.
CharacterFrequency cf = LinkedList<CharacterFrequency>
list(ch);
//Creating my nodes.
LinkedListNode<CharacterFrequency> node;
node = list.Find(cf);
//Conditions
if (node != null)
{
node.Value.Add(cf, 1); //Increase in increments.
}
else
{
list.AddLast(cf); //If it is not on the list yet, add it.
}
}
reader.Close();
//Create my output file.
writer = new StreamWriter(File.OpenWrite(args[OutputFile]));
//Display on prompt.
foreach (CharacterFrequency cf in list)
writer.WriteLine(cf.ToString());
writer.Close();
}
}
}

Find all the child test suites in TFS using C#

I would like get all the child test suites under a parent test suite in TFS using C# code. Let me know if anyone has done this.

I have create the simple app based on Microsoft.TeamFoundationServer.ExtendedClient
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Microsoft.TeamFoundation.Client;
using Microsoft.TeamFoundation.TestManagement.Client;
namespace ConsoleApp1
{
class Program
{
static void Main(string[] args)
{
string teamProjectName = "TFSCMMI";
int parentTestSuiteId = 819; // or test plan id
var TFSCurrentProjectCollection = new TfsTeamProjectCollection(new Uri("http://tfs-srv:8080/tfs/defaultcollection"));
var testStore = TFSCurrentProjectCollection.GetService<ITestManagementService>();
var teamProject = testStore.GetTeamProject(teamProjectName);
var testSuite = teamProject.TestSuites.Find(parentTestSuiteId);
if (testSuite.TestSuiteType == TestSuiteType.StaticTestSuite)
{
var staticSuite = testSuite as IStaticTestSuite;
foreach (var childSuite in staticSuite.Entries)
{
Console.WriteLine("Test suite id " + childSuite.Id + " name '" + childSuite.Title + "'");
}
}
}
}
}

Using Google shortenurl API to make short urls

I am trying to use google shorten url to shorten a lot of urls for our project and keep getting an HTTPRequestException unhandled error. The first time I ran it it was asking to locate a .cs file which was not there so I am guessing it is due to that. I just used nugget installer to get this in visual studio. Any ideas?
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Google.Apis.Urlshortener.v1;
using Google.Apis.Oauth2;
using Google.Apis.Services;
using System.Net;
using System.IO;
using System.Text.RegularExpressions;
namespace ShortenURL
{
class Program
{
static void Main(string[] args)
{
var originalURL = "https://www.google.com/maps/place/Desert+Christian+Schools/#32.2367293,-110.8339121,16.75z/data=!4m7!1m4!3m3!1s0x86d66f1806d996d7:0xe8ac20e8cebb38b9!2s7525+E+Speedway+Blvd,+Tucson,+AZ+85710!3b1!3m1!1s0x86d66f1806d996d7:0x7b90764e4e6a25d8";
string shortUrl = Shorten(originalURL);
Console.WriteLine(shortUrl);
Console.WriteLine("FINISHED");
Console.ReadLine();
}
private const string key = "AIzaSyB3pfstkvAZzEVOy4dNHaKTuNmtDaG3XsI";
public static string Shorten(string url)
{
UrlshortenerService service = new UrlshortenerService(new BaseClientService.Initializer()
{
ApiKey = key,
ApplicationName = "ShortenUrlAHLI"
});
var m = new Google.Apis.Urlshortener.v1.Data.Url();
m.LongUrl = url;
return service.Url.Insert(m).Execute().Id;
}
}
}

//The code workable in my case :)
//VS2017
private static string shorten(string url)
{
UrlshortenerService service = new UrlshortenerService(
new BaseClientService.Initializer() {
ApiKey = "<google-api-key>",
ApplicationName = "<google-app-id>", });
var m = new Google.Apis.Urlshortener.v1.Data.Url();
m.LongUrl = url;
return service.Url.Insert(m).Execute().Id;
}