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Value Cannot Be Null. R Nparameter Name Source

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The best approach (if you control the code that generates the collection) is to make it a coding practice to NEVER RETURN A NULL COLLECTION, EVER. Consider the following samples: var filteredCollection = from item in getMyCollection() orderby item.ReportDate select item; This code is not NULL SAFE, meaning that if getMyCollection() returns a null, you'll get the var db = new hublisherEntities(); establishment_brands est = new establishment_brands(); est.brand_id = 1; est.establishment_id = 1; est.price = collection["price"]; est.size = collection["size"]; db.establishment_brands.Add(est); db.SaveChanges(); This gives me an error of Value Because you can't do anything with a null Reference other than assign it - something and that makes no sense for most functions. his comment is here

Sign in using Search within: Articles Quick Answers Messages Use my saved content filters home articles Chapters and Sections> Search Latest Articles Latest Tips/Tricks Top Articles Beginner Articles Technical Blogs Posting/Update Problem is, is that the query just doesn't want to work... This is what I've done: The Repository class: public List GetTagNumbersByTagType() { TagNumberRepository tagNumber = new TagNumberRepository(context); var query = from t in base.GetAll() join c in tagNumber.GetAll() on t.TagTypesID equals This may be an issue for any other methods on DbSet as well.

Value Cannot Be Null. Parameter Name Source In C#

why does this error keep popping out? Your Email Password Forgot your password? Parameter name: String Value cannot be null.

  • share|improve this answer answered Jul 14 '10 at 13:41 sgmoore 9,60442145 1 after executing my linq i got that type of result System.Linq.Enumerable.WhereSelectListIteratorf__AnonymousType1f__AnonymousType0>>>> –Emaad Ali Jul 14
  • Your Email This email is in use.
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  • Try this @Html.ActionLink("Edit", "Edit", new { [email protected] }) Member 10740412 3-Nov-15 11:32am I tried but it didn't work Member 10740412 3-Nov-15 11:33am fhdgfdfsjdsjfjsd Member 10740412 3-Nov-15 11:49am
  • Parameter name: source Above error comes in situation when you are querying the collection which is null.
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What is the common, normally open, normally closed? share|improve this answer edited May 18 '14 at 20:14 answered Jul 14 '10 at 8:14 Abel 35.9k1295156 thanks for you rply the error raises at "foreach (var item in Parameter name: elementID Advertise | Privacy | Mobile Web01 | 2.8.161110.1 | Last Updated 29 Dec 2010 Copyright © CodeProject, 1999-2016 All Rights Reserved. Value Cannot Be Null Parameter Name Inner Terms of Service Layout: fixed | fluid CodeProject, 503-250 Ferrand Drive Toronto Ontario, M3C 3G8 Canada +1 416-849-8900 x 100 Sign in Gallery MSDN Library Forums Get started for free Ask

Thanks for your reply!!! Value Cannot Be Null C# In the context of this quote, how many 'chips/sockets' do personal computers contain? Can you narrow the code down any more. Parameter name: source-2Value cannot be null.

QGIS Print composer scale problems Scheduling a task into a period within a day, depending on whether or not it is a weekend How to handle a common misconception when writing Value Cannot Be Null Parameter Name String Sharepoint 2013: Rest API - does header need to include X-RequestDigest? The point I was making was extending on yours, eliminate the possibility of nulls –Paul McCowat Aug 22 '12 at 20:50 What's with the first argument of the UserViewModel Parameter name: source Value Cannot Be Null Parameter Name Value Value cannot be null.

Value Cannot Be Null C#

Sign in using Search within: Articles Quick Answers Messages Use my saved content filters home articles Chapters and Sections> Search Latest Articles Latest Tips/Tricks Top Articles Beginner Articles Technical Blogs Posting/Update MathSciNet review alert? Value Cannot Be Null. Parameter Name Source In C# Find a mistake in the following bogus proof How can I open the next/previous file alphabetically? Value Cannot Be Null. Parameter Name Collection Step 3 This step you'll have to do yourself.

Thanks Update: Now it's passed. this content Understand that English isn't everyone's first language so be lenient of bad spelling and grammar. Browse other questions tagged c# linq or ask your own question. Code is provided.... Value Cannot Be Null. Parameter Name Source Entity Framework

If the data loads then you have a context lifetime issue. Limit computation technology in a futuristic society Scheduling a task into a period within a day, depending on whether or not it is a weekend Writing a singleton as a countable public ActionResult Edit(UpdateUser model, string User_Id) { try { UserDTO user = new UserDTO(); user.UserName = model.UserName; new UserHandler().Update(user,int.Parse(User_Id)); return RedirectToAction("Details", new RouteValueDictionary (new { id = user.UserID})); } catch { weblink string code = itmss.Item.Code.ToString(); // isn't Code already a string?

share|improve this answer edited Apr 1 at 18:53 Gonzalo.- 5,55522656 answered Mar 30 '12 at 10:22 wicky 10113 add a comment| up vote 4 down vote I think you can get Value Cannot Be Null. Parameter Name Source Mvc Parameter name: ms_no Value cannot be null. Can you show me the changed code Member 10740412 3-Nov-15 7:13am public ActionResult Edit(int id) { UserDTO user = new UserDTO(); //USER user = database.USERS.Find(id); //return View(user); user.UserID =

This is the sql query that brings both the TagType (all data) and tagSerialNumber from tagNumber table back: (this is what I'm trying to do....) Can you see any fault in

I guess you must be calling it from some other view. Parameter name: source” 1 How should I handler bool? if you don't then the call will fail. Value Cannot Be Null Parameter Name Method where did you change to user_id.

Make sure the .NET symbols can be found. Step 2 The next step is to meticulously replace each part that can result in a null reference exception. Linux questions C# questions ASP.NET questions fabric questions SQL questions discussionsforums All Message Boards... http://bovbjerg.net/value-cannot/value-cannot-be-null-parameter-name-source.php Member 10740412 3-Nov-15 11:26am how can i send you project John C Rayan 3-Nov-15 11:29am give me your email and I send you my email.

No Flaming or Trolling. Parameter name: key how to do solve this problem "Value cannot be null. Parameter name: source at System.Linq.Enumerable.Any[TSource](IEnumerable1 source, Func2 predicate) Case 2 -> when using ObjectContext for EDM Message=Unable to update the EntitySet 'Contact' because it has a DefiningQuery and no element exists I have modified the lambda but am receiving the same error message as above.

Therefore if you want to take advantage of this functionality you have to ensure that your context that you passed to originally fetch the data remains open until you retrieve the Treat my content as plain text, not as HTML Preview 0 … Existing Members Sign in to your account ...or Join us Download, Vote, Comment, Publish.