Checking whether a property value equals to a predefined one in a list of objects

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I have two classes like this

public class Stock
    public StockItem Item;

    public string Location;

    public int Quantity;

    public string Price;

public class StockItem
    public string Code;

    public string Name;

    public string Unit;

And I have a list that contains multiple instances of the Stock class

var stockList = new List<Stock>();

I am trying to determine whether the Name property of each instance inside the list is equal to a predefined string. Currently, I am looping through the list like this

foreach (var stock in stockList)
    if (stock.Item.Name.ToLower() == "test")
        Console.WriteLine("Found the class")


However, I was wondering if there was a more efficient way to do this using Linq or something similar to the .Contains method. Is there a simpler or more efficient way to accomplish this?

whether the Name property of each instance inside the list is equal to a predefined string

Not much more efficient but simpler:

bool allAreEqual = stockList.All(x => x.Item.Name.Equals("test", StringComparison.OrdinalIgnoreCase))

If you instead want to find the first which matches the condition(what your loop really does):

Stock si = stockList.FirstOrDefault(x => x.Item.Name.Equals("test", StringComparison.OrdinalIgnoreCase));

Now you know if such a Stock exists(si != null) at all and you got it.

In the absence of C++-style default argument lists, optional properties can be invoking a constructor with the full argument list providing default values. (​Nevertheless, Constructor Injection, like Dependency Injection in general, is very test-friendly, overall.) An object has more than one dependency of the same type. Find Checking Property Value. Find Quick Info from Multiple Sources

All in linq will return True or false

stockList.All(p => p.Item.Name.ToLower() == "test");

Furthermore, once you have created an object property by assigning a value to it to list the prop- erty names of an object: function DisplayPropertyNames(obj) properties, it does not enumerate certain pre- defined properties or methods. The in operator (see Chapter 5) can be used to test for the existence of a property​. whether the Name property of each instance inside the list is equal to a predefined string Not much more efficient but simpler: bool allAreEqual = stockList.All(x => x.Item.Name.Equals("test", StringComparison.OrdinalIgnoreCase))

You can use the Linq Any() method:

bool containsItemName = stockList.Any(x => x.Item.Name.Equals("MyName", StringComparison.InvariantCultureIgnoreCase));

Here is an example: Try If objADObject. For more information on the properties and methods available to exception objects, check out the System. the strADsPath variable to the value specified on the command line and if one wasn't, default to the RootDSE. Table 31-3 contains a list of all the DirectoryEntry methods. The Point.Equals method checks to make sure that the obj argument is not null and that it references an instance of the same type as this object. If either check fails, the method returns false. The Point.Equals method calls the GetType method to determine whether the run-time types of the two objects are identical.

Are you really looking at all instances? From your question, it seems as if Anymight be the way to go, see here.

stockList.Any(p => p.Item.Name.ToLower() == "test");

Hands-On Test Projects with Business Scenarios Sushil Markandeya, The event AT SELECTION-SCREEN OUTPUT is triggered on two occasions: 1. Properties. –. Data. Objects. SCREEN. In the ABAP screen programming The table in this PDF document lists all the fields of the internal table By default is set to 1. The property Id is of type System.Int32, a value type, so its comparison will actually check whether the objects have the same value. The property Name is of type System.String, which although is

You can get a result what you wanted by calling Any

bool result = stockList.Any(
    stock => stock.Item.Name.Equals("text", StringComparison.InvariantCultureIgnoreCase)

In this code, the parameter name stock can be changed whatever you want.

Here's a Code Recipe to check if a #JavaScript array contains a value. However, there is one value, where they differ 🤭 a list of classnames which will be a node list then you can use contain method to see if it has a classname. You can use the in operator to loop over an object to check if a specific property key exists. DataFrame.equals(self, other) [source] ¶. Test whether two objects contain the same elements. This function allows two Series or DataFrames to be compared against each other to see if they have the same shape and elements. NaNs in the same location are considered equal.

The object to locate in the List<T>. The value can be null for reference types. Returns. Boolean. true if item is found in  It is much better to use Java’s utility method Objects.equals (or, if you’re not yet on Java 7, Guava’s Objects.equal): return Objects.equals(firstName, person.firstName) && Objects.equals

ProcessModule] instance and populates it with the value of current processes ProcessName property. Finally, Format-List cmdlet is used to display the name and  In this post, we will see how to check if a primitive or an object array contains specified value or not in Java. 1. Linear search. Naive solution would be to perform a linear search on the given array to check if specified value if present in the array or not.

1. Overview. Finding an element in a list is a very common task we Learn several algorithms for checking whether a list is sorted in Java. Based on our current implementation of equals, two Customer objects with the same id will be we can optionally choose to return a default value instead of null: ? I have a list of objects. These objects have a processname, amount and a date. I need every object to have all dates (if it doesnt exist add a new one with amount 0). So if I have 2 processnames: 'Inflate' and 'Deflate' and they have different dates: 'Inflate':12-01-2017 and 'Deflate': 13-01-2017. I need them to have the other object's dates.