How To write Multiple where Condition in LINQ Query? You can use the WhereIf statement method avaialbe in LINQ in this way: query = query.WhereIf (condition, b => b == "something else"); So your final code will be: // Original query var query = someList.Where (a => a == "something"); // Add additional where constraints with condition // using 'WhereIf' statement query = query.WhereIf (condition . How Intuit democratizes AI development across teams through reusability. c.Name:c.SuperTerm.Name.IndexOf (searchValue)) .ThenBy (t => t.Producer) .TolistAsync (); Share Follow answered Oct 22, 2021 at 11:17 Abrar Jahin 13.7k 23 108 159 Add a comment Your Answer The reason that they can have different types is because the first two declarations belong to different scopes. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? This condition is generally expressed using lambda expression. For example, you might use them like this: var query = items.Where( x => x. SomeProperty > someValue); query = query.If( searchByOtherProperty, q => q.Where( x => x. OtherProperty == otherValue); Can I tell police to wait and call a lawyer when served with a search warrant? ncdu: What's going on with this second size column? Connect and share knowledge within a single location that is structured and easy to search. Making statements based on opinion; back them up with references or personal experience. How is Jesus " " (Luke 1:32 NAS28) different from a prophet (, Luke 1:76 NAS28)? All you need is: If clientId = 0 we want ALL employees,. From Frequently Asked Questions (LINQ to SQL) Q. A place where magic is studied and practiced? Create the query. You can create a new method to check age using if else and call that method from linq Query Result=CheckAge (p.Age) public string CheckAge (int age) { if (age <= 24) return "Age is less than 24 yrs"; else if (age <= 40) return "Age is less than 40 yrs"; else if (age >= 60) return "Age is more than 60 yrs"; return ""; } I have linq query where I need to set condition if p.conditionVariable > 0 I would apply the following condition. Linq-to-sql uses SqlParameter to generate SQL queries, so no you do not need to do anything extra. Should isn't does. Hello, yes you can use LINQ to query data in a DataGridView. Edit: You can make combinations like this: In this case your are using deals.Count() a lot, so you can store the result in a temporary variable using the LINQ let syntax: Thanks for contributing an answer to Stack Overflow! Any time you want to do a side-effect per element (such as logging), breaking out the lambda into a statement body makes it easy to reason about. How to use if else statement in combobox in VB.NET. IF ELSE condition in Linq Where clause using C# and VB - ASPSnippets rev2023.3.3.43278. The WHERE clause reduces to True or False, and the first expression looks supect. Acidity of alcohols and basicity of amines, Theoretically Correct vs Practical Notation. Styling contours by colour and by line thickness in QGIS, Time arrow with "current position" evolving with overlay number, Partner is not responding when their writing is needed in European project application, ERROR: CREATE MATERIALIZED VIEW WITH DATA cannot be executed from a function, Recovering from a blunder I made while emailing a professor. How to follow the signal when reading the schematic? A Computer Science portal for geeks. Does Counterspell prevent from any further spells being cast on a given turn? The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. You need to declare result before the if statement: Or you can keep the var declaration in this other variant: Now you should somehow find a way to either change that if or remove it completely because result cannot be null at that point. data source) contains a specified element or not. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Check out this New 2024 Evo Red LYNX RAVE RE 850 E-TEC Ice Ripper XT 1.25 M.S. linq query with if else condition c# - malabana.com LinqExpression()_linq expression_maiker-. When to use .First and when to use .FirstOrDefault with LINQ? Connect and share knowledge within a single location that is structured and easy to search. If you want to use if/else conditions, you can use something like this. Making statements based on opinion; back them up with references or personal experience. ? How to write an inline IF statement in JavaScript? Most queries in the introductory Language Integrated Query (LINQ) documentation are written by using the LINQ declarative query syntax. Do new devs get fired if they can't solve a certain bug? For example, assigning grades (A, B, C) based on marks obtained by a student. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. string toprint = string.Empty; This is what I did. / E.S. LINQ Join with Multiple Data Sources in C# - Dot Net Tutorials If else condition is not working in linq query - CodeProject With Linq, can I use a conditional statement inside of a Where extension method? How do particle accelerators like the LHC bend beams of particles? Is it correct to use "the" before "materials used in making buildings are"? this is excellent and should be shared all over the web, only good answer for any conditional where statement. if (value <= 12) ); } else { roles = roles.Where (dp => . By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Chakra Basics; Gemstones; Main Menu The "? In general though, to apply very different queries, you could either use: IEnumerable<XElement> roles = xlServerRoles.Descendants ("ServerRole"); if (isDup) { roles = roles.Where (dp => . A Computer Science portal for geeks. I need this because I will need sorting based on Status. If it has any value then I need to search the id which is equal to conditionvariable in table2. If that is not what you are doing, show some sample data. The following example the data can be data bound or unbound. To learn more, see our tips on writing great answers. I was having issues with seperate LINQ statements not being the same (Deleted/Clients filters need to be on all queries), so by add these two lines it works (all be it until we have 999+ clients - which would be a happy re-factor day!! What if I have more than two cases, is there possibility to do that? The body of the lambda is just the same as the expression in query syntax or in any other C# expression or statement; it can include method calls and other complex logic. Is there a single-word adjective for "having exceptionally strong moral principles"? The following examples demonstrate some simple LINQ queries by using each approach listed previously. The nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. @ile - Absolutely, you just need to use some parenthesis.. To find an item in a list by LINQ in C#, you can use the FirstOrDefault () or SingleOrDefault () methods. I think you want to make a || between conditions and table2 will be queried based on p.CondtionVariable. This is same as a new list created. Here are some key differences between if/else and switch-case: if/else can handle multiple conditions in a single statement, whereas switch-case can only handle a single variable or expression. The content must be between 30 and 50000 characters. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? Is it possible to create a concave light? You need to understand that what's in the WEHRE clause is a boolean expression not a statement. Although it looks as if IEnumerable has been redefined to include these additional methods, in fact this is not the case. from prob in table2.where (p => p.Id == p.ConditionVariable && !p.IsBlocked && p.IsActive) if p.conditionVariable == 0 the following remains the same. Home; Mine; Mala Menu Toggle. Means it is mostly used in querying purpose like fetch largest value from an array. c# if else then statement with LINQ - Stack Overflow I need the record with id equals to that conditionVariable. To learn more, see our tips on writing great answers. Thoughts? @HafizH can you give a feedback of solutions below? How to show that an expression of a finite type must be one of the finitely many possible values? Staging Ground Beta 1 Recap, and Reviewers needed for Beta 2, ifthen to concat SQL queries, equivalent in LINQ - VB NET, C# Linq Query on database using field name as a variable, Building a lambda WHERE expression to pass into a method, Dynamic LINQ OrderBy on IEnumerable / IQueryable. What can a lawyer do if the client wants him to be acquitted of everything despite serious evidence? Ask for this RAVE RE 850 E-TEC Ice Ripper XT 1.25 M.S. Does Counterspell prevent from any further spells being cast on a given turn? You can perform the where separately from the main query: You need to declare the result variable before the first if-else. Making statements based on opinion; back them up with references or personal experience. 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 The output from the two examples is identical. LINQ to SQL avoids such . Most queries in the introductory Language Integrated Query (LINQ) documentation are written by using the LINQ declarative query syntax. @hanzolo any IEnumerable is also an object. mustang mach e dark matter grey. Not the answer you're looking for? you might have only UUF1 with info, in which case it will take that and ignore the UUF2 where clause, you might have both in which it will take both or you might not have anything in UUF1 or 2 and your where clause will just take the accountid as the where clause. Just do it once before the start of the loop: Thanks for contributing an answer to Stack Overflow! I know this will probably be a newbie question. The variable is limited to the block it is declared in. In a LINQ query, the from clause comes first in order to introduce the data source ( customers) and the range variable ( cust ). How is LINQ to SQL protected from SQL-injection attacks? +1 (416) 849-8900, where (ISSTUDENT == true ? What video game is Charlie playing in Poker Face S01E07? If a question is poorly phrased then either ask for clarification, ignore it, or. The content must be between 30 and 50000 characters.