Home > Value Cannot > Value Cannot Be Null Exception C#

Value Cannot Be Null Exception C#


Parameter name: source Stack Trace: [System.ArgumentNullException: Value cannot be null. Professor Lewin: "Which string will break?" / Me: "That one." / Professor Lewin: "Wrong!" How to capture disk usage percentage of a partition as an integer? I never gets this error in development. Find out if you put a query togehter (somewhere outside your example code) where you are using a LINQ-method, or that you used an IEnumerable as a parameter which is NULL. his comment is here

Browse other questions tagged c# asp.net-mvc entity-framework or ask your own question. However, in looking at the stack trace, my best guess is that there is a problem with the "object[] args" parameter in a string.Format() call. up vote 8 down vote favorite 3 I don't know why I get this kind of error. Would the members of an online imageboard (or any community) be able to build a post-apocalytic society upon their reputation?

System.argumentnullexception Value Cannot Be Null. Parameter Name Source

As in Step 1 here . the issue was I have a and this has got a include property and I have some other tables listed here and mistakenly a table was there that has been Assigning only part of a string to a variable in bash Teenage daughter refusing to go to school Is calling a function with local side-effects twice in the same expression undefined Missing } inserted. \int dx = x + C & Departing from airport before visa is valid, but arriving when it is Is it possible to hand start modern planes?

Was it legal to rant against trick or treating via loudspeaker during halloween? Source is the enumerable you are filtering –Sergey Berezovskiy Feb 16 '15 at 9:09 @mrhands Check if ListMetadataKor is null or not . –Suraj Singh Feb 16 '15 at Join them; it only takes a minute: Sign up Value cannot be null, ArgumentNullException up vote 0 down vote favorite I am currently trying to return an array which contains information Value Cannot Be Null Parameter Name Input It is provided so that application code can differentiate between exceptions caused by null arguments and exceptions caused by non-null arguments.

If message is null , the System.ArgumentNullException.Message property is initialized to the system-supplied message provided by the constructor that takes no arguments. Value Cannot Be Null. Parameter Name Value You need to change that logic asap, otherwise you will definitely have edge cases that cause you untold debugging sessions in the future. See Also System.ArgumentNullException Class, System Namespace ArgumentNullException(System.String) Constructor public ArgumentNullException(string paramName); Summary Constructs and initializes a new instance of the ArgumentNullException class. I just want to add an entity to the table.

however, be VERY careful for future proffing this, in case for some bizarre reason, you end up having a 'Mr Vacant' reserving seats!! –jim tollan Oct 31 '13 at 23:01 Value Cannot Be Null C# The alternative of course (in current code) would be option #3: if (GetSeatInfoAt(i) == "Vacant") { vacantSeats[i] = GetSeatInfoAt(i); } else { vacantSeats[i] = string.empty; } phew... Parameter name: source stacktrace of [ArgumentNullException: Value cannot be null. What is your db schema? –Ash Burlaczenko Apr 29 '13 at 14:27 You might want to look into this question and its answers: stackoverflow.com/questions/3244336/… –Ville Salonen Apr 29 '13

Value Cannot Be Null. Parameter Name Value

We appreciate your feedback. For demonstration below code will result in such an exception. System.argumentnullexception Value Cannot Be Null. Parameter Name Source Most likely you have not provided enough elements to correspond to the number of tokens specified in the "string format" parameter. Value Cannot Be Null Parameter Name String Symmetric group action on Young Tableaux Can an object *immediately* start moving at a high velocity?

What is the significance of the robot in the sand? this content I found this solution here. Parameter name: source” -2 Value cannot be null. context.Users.AddOrUpdate(u => u.UserName, new ApplicationUser { UserName = "demo", Email = "[email protected]", EmailConfirmed = true, PhoneNumberConfirmed = true, PasswordHash = password, PhoneNumber = "111-222-3344", SecurityStamp = Guid.NewGuid().ToString() //THIS IS WHAT I Value Cannot Be Null. Parameter Name Value C#

This statement: (GetSeatInfoAt(i) == "Vacant") is wrong. Parameter name: source in Asp.net0EF6 MVC: Value cannot be null. Make sure you never assign null to this list. weblink I hope it works for you too.

While running the project it is expected to return “version mismatch or File not found error” but below error message is thrown. Value Cannot Be Null Parameter Name Name Parameter name: String1c# LINQ OrderBy, dynamic objects, and null values0LINQ returns Value cannot be null. There are moreC# experts in the "Visual C# General" forum.

I am using a combobox where I want to list all vacant or reserved seats based upon choice.

  • Please head to StackOverflow for support.
  • Not Cannot access a closed Streamable6Cannot Access Azure DB Server from Azure Website0Invalid column name 'Discriminator'0C# - Identity Framework and integer UserId - await SignInAsync issue2Deleting entries in DropDownList causes “Value
  • z o.o.
  • message A String that describes the error.
  • perhaps List is more forgiving, due to the fact that it creates initialised objects as required. –jim tollan Oct 31 '13 at 22:53 i take that back -of course,
  • 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
  • And I don't know to solve it UPDATE This is my code in image I fill ListMetadataKor with this code BWHelper.Run((s, e) => { DataTable dataMetaDataKOR = ExcelHelper.GetDataTableFromExcel( AppConstants.FILE_METADATA, AppConstants.SHEET_METADATA_KOR );
  • Vent kitchen hood vent to roof turbine vent?

Welcome to the All-In-One Code Framework! Parameter name: type] System.Activator.CreateInstance(Type type, Boolean nonPublic) +7470086 System.Activator.CreateInstance(Type type) +6 CKFinder.Connector.Connector.LoadPlugins() in E:\DMGNEW\4_Code\DMGWeb\ckfinder\_source\Connector\Connector.cs:96 CKFinder.Connector.Connector.OnLoad(EventArgs e) in E:\DMGNEW\4_Code\DMGWeb\ckfinder\_source\Connector\Connector.cs:121 System.Web.UI.Control.LoadRecursive() +50 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627 PLEASE HELP!!!! Parameter name: first7ArgumentNullException on changing frame-2Cannot increment integer inside the foreach loop1System.ArgumentNullException: Value cannot be null Parameter name: input0Nhibernate ArgumentNullException was unhandled Value cannot be null Parameter name: stream4ArgumentNullException: Value cannot Value Cannot Be Null. Parameter Name Collection If a seat is Vacant, I add it to an array.

What happens if there is exception in loading data tables or running ToolConvert methods? Polyglot Anagrams Robbers' Thread why does this error keep popping out? Privacy statement Dev Centers Windows Office More... http://bovbjerg.net/value-cannot/value-cannot-be-null-vb-net.php Is it possible to sheathe a katana as a free action?

I was calling Count on an instance of DbSet with a filter of null i.e. Convert.ToInt32(dataTable.Rows[i][ORDER]) : (int?)null; k.Page = !required.Contains(dataTable.Rows[i][PAGE]) ? All rights reserved Terms of use Privacy Policy Proud to be Open Source This website uses cookies. Parameters paramName A String that contains the name of the parameter that caused the exception.

Is calling a function with local side-effects twice in the same expression undefined behavior? The content of message is intended to be understood by humans. I have loaded it using thread BWHelper.Run –mrhands Feb 16 '15 at 9:28 @mrhands also possible problem is handling of exceptions in your BWHelper.Run method. Parameter name: source?30Value cannot be null.

Join them; it only takes a minute: Sign up Value cannot be null. more hot questions question feed lang-cs about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation This method is supposed to loop through an array containing all seats and their information. QGIS Print composer scale problems Is adding the ‘tbl’ prefix to table names really a problem?

The challenge does not require that you re-ask for input if the first one failed the validation. CKSource Newsletter * indicates required Email Address * First Name Last Name Company Name or Your Website By clicking the subscribe button, you agree to our Privacy Policy. Do we know Ford's old name? Show only /// what the user wants to see, whether its all seats, reserved seats or vacant seats only. /// /// /// private void cmbOptions_SelectedIndexChanged(object sender,

Parameter name: source-2Value cannot be null. I just removed the stupid table from the include list and I am good to go.