How do I conditionally update List<Object> items using LINQ

Related searches

How do I conditionally update List<object> items using LINQ, I have managed to get a way to update all items in List<object> using this syntax:

var updatedList = sourceList.Select( x => { x.PropertyA = NewValue; return x; }).ToList();

var updatedList = sourceList.Select( x => {return x = x.PropertyA == SomeValue ? x1 : x;}).ToList();

How do I conditionally update List<Object> items using LINQ, Based on an outcome, the status of the item will be updated with a new value. SharePoint Online has a nice Flow menu for lists and libraries. To� How do I conditionally update List<object> items using LINQ, I have managed to get a way to update all items in List<object> using this syntax: var updatedList = sourceList.Select( x => { x.PropertyA = NewValue; return x; }).ToList(); c# entity-framework linq. share. Share a link to this question.

You can either project it to a new collection using the .Select, or affect the original list using the .ForEach extension method. Both are shown below, given an arbitrary condition.

class Program
{
    static void Main(string[] args)
    {

        List<testClass> ogList = new List<testClass>();

        bool testCondition = true;

        //use the select to update and project to new collection
        var updated =
            ogList 
            .Select(x =>
            {
                if (testCondition)
                    x.testProp = 1;

                return x;
            }).ToList();
        //use the foreach to update original collection
        ogList.ForEach(x =>
        {
            if (testCondition)
                x.testProp = 1;
        });
    }
}

public class testClass
{
    public int testProp { get; set; }
}

Microsoft Flow beginners guides: How to conditionally update , We could implement this either using the SharePoint Designer workflow or Power Automate. Let's you are going with the SharePoint Designer� To update the required list element, you have to use the Python for loop. In the loop, you have to use the if condition to compare and change only the required element. Check the below-given example and change the required element as per your requirement.

You can use this code:

sourceList.Where(w => w.CheckProperty == valueofProperty).Select(s => {
                            s.PropertyA  = valueofPropertyA ;
                            s.PropertyB  = valueofPropertyB;
                            return s;
                        }).ToList();

Conditionally update SharePoint list column based on another lists's , Solved: Hi, I am in te middel of building a flow that that updates rows in the sharepoint list with a blank when a user leaves a question open. How to conditionally update DataFrame column in Pandas. Ask Question Asked 7 years ago. Active 1 year, 10 months ago. Viewed 69k times 56. 12. With this

Hope this answer will help you. So here I creating objects of my database, list of my db_table and table.

private DB dbs = new DB();
List<tab1> lst = new List<tab1>();
tab1 tabobj = new tab1();

here you will get the list of data in your table

lst = dbs.tab1.ToList();
````````````
updating the table 
```````````
tabobj.c1 = "value";
tabobj.c2 = "value";

adding updated columns to table

dbs.tab1.Add(tabobj);

save changes here

dbs.SaveChanges();

data of updated table

lst = dbs.tab1.ToList();

Solved: Update sharepoint item conditional expression, Use Microsoft Flow to Conditionally Update a Contact from a SharePoint List ( Part III). In the last part of this tutorial, I will add some finishing� This can be done quite simply by using List Validation. List validation allows you to check that the user has entered valid data or ensures that they enter all necessary data. Note: SharePoint also provides column validation which can be set at the column level, however for the above scenario, you must use List Validation. At the column level

Use Microsoft Flow to Conditionally Update a Contact from a , How to Update Members of a Collection with LINQ. Sometimes it's just cool to take a walk through some technology to find all the different ways you can solve a problem -- sort of "Fun with the .NET Framework." Here's a look at all the ways that Peter could think of to update an object in a collectionsome of which may be foolish. By Peter Vogel

This discussion is archived. 12 Replies Latest reply on Jun 12, 2012 8:21 AM by 941623 Latest reply on Jun 12, 2012 8:21 AM by 941623

Do this by clicking on the Office button, click on Excel options and in the "Popular" section check the box ""Show developer tab in the Ribbon". Click on the Developer menu and go to the Visual basic view. Click on the nemu View and select "properties Window". In that list you can find the "EnableFormatConditionsCalculation".

Comments
  • Use Where. Also, linq isn't designed to handle side-effects.
  • Good day, using Where Clause will return a few items that match the condition, I wanted to conditionally update the items and return unfiltered list.
  • What's the point, you're mutating the original list and returning a shallow copy of it. Could as well do foreach (var item in sourceList) { item.PropA = newValue; }
  • Don't do this. It's an abuse of LINQ and you gain nothing over a simple foreach loop, and in fact, you lose readability. See this article: blogs.msdn.microsoft.com/ericlippert/2009/05/18/…
  • Thank you very much for the lessons shared in this post, I greatly appreciate your time and effort to concoct this solution. May I also know what are the disadvantages of the technique I used?
  • Many people discourage the use of linq to update objects in a collection, but it is largely a matter of style and preference. Performance should be considered and characterized on a case by case basis and is up to you.
  • As mentioned in comments, LINQ isn't really designed to introduce side effects like the code in your answer does.
  • @WaiHaLee this code is running and its update object when the condition is satisfied
  • I didn't say that the code won't run - but it is unusual to use LINQ like this. As this other answer shows, you can use a foreach loop to modify the list - which is more normal.