The following example demonstrates how to check the capacity and count of a List<T> that contains a simple business object, and illustrates using the TrimExcess method to remove extra capacity. using System; using System.Collections.Generic; // Simple business object.

Oct 4, 2024 · We add elements, count elements, and can locate elements with IndexOf or Find. With special syntax we initialize lists. First example. Here we create 2 Lists—each list has 4 elements: 4 Integers of the values 2, 3, 5 and 7. We call Add () to append to the end of the list. Count returns the length.

Dim ListCount as Integer = myList.Count. ListCount = ListCount - 1. For i As Integer = 0 To ListCount Step 1. If myList(i).MyStatus = FMyStatus Then. myList(i).MyFunction.Invoke() myList.RemoveAt(i) End If. Next. This throws me an exception all …

Jan 9, 2014 · I need to count the items that meet a criteria in a List(Of Structure) in .NET 2.0. For example: Dim listcars as New List(Of car) Structure car Dim Name as String Dim year as Integer End

Use the Count property to determine the number of elements in a Collection object. Gets the number of elements in a collection.

We can loop over the elements in a List instance. The program adds three integers to the List contents, and then uses a For-Each loop construct. Finally it uses a For-loop. Note: The expression "list.Count - 1" is used for the upper loop bounds on the For-loop. This keeps the index valid throughout.

Feb 20, 2013 · I am looking to dynamically count from a list, how many times items have occured. I can do it below if I specify the value I am looking for, but what I am really looking to do is to iterate through my list, count occurences, and total them out.

How to count number of items exists in a List ? List.Count property gives you the number of items exists in List. How to retrieve items from List ? You can retrieve items from List collection by using for loops. How to insert an item in the List ? You can use insert (index,item) method to insert an in the specified index.

Jan 29, 2025 · Add the following code to the Load event to query the tables that are exposed as properties of your DataContext and count, sum, and average the results. The sample uses the Aggregate clause to query for a single result, and the Group By clause to show an average for grouped results.

Jun 27, 2006 · you can ask the datasource for how many items it has.. if the datasource is a datatable, then dt.Rows.Count will give it to you, if the source is a bindingsource then bs.List.Count will give it to you..