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Property accessor 'Title' on object x threw the following exception:'Object reference not set to an instance of an object
public partial class Products : System.Web.UI.Page { public class Products2 { public string ItemNumber { get; set; } public string ItemDescription { get; set; } public string PrePrice { get; set; } public string Size { get; set; } } //.... Then: List<Products2> list = new List<Products2>(); foreach (DataRow dr in table.Rows) { Products2 products = new Products2(); products.ItemNumber = dr["Item #"].ToString(); products.ItemDescription = dr["Item Description"].ToString(); products.PrePrice = dr["Pre Price"].ToString(); products.Size = dr["Size"].ToString(); list.Add(products); }

Categories : Asp Net

Null reference error "Object reference not set to an instance of an object" accessing Model while loading a view
You need to initialize the Model I suppose, just like we do in C#: Suppose we have a class, then we initialize the same like: Model m1= new Model(); Make sure you check the null also for all items you are passing.

Categories : Asp Net Mvc

Session Variable List, when adding a new Object I get Object reference not set to an instance of an object
After Session["SessionStats"] = new UserSession(); you have added a new UserSession, whose Option property is null, to Session. Then, when you do ((UserSession)Session["SessionStats"]).Options.Add(RO); you are pulling out that very same object and accessing the Option property, which is null, hence the NullReferenceException. It looks like you are forgetting to assign something to the newly created UserOption's Option property. However, you don't seem to be using the Options you are instantiating in the foreach for anything...

Categories : Asp Net

Reading values into a List object - Object reference not set to an instance of an object
This change should solve the problem: MyVec::MyVec(void) { MyVector = gcnew List<double>(); } Class member MyVector is initailly null reference. You need to initialize it before using, and MyVec constructor is appropriate place to do it.

Categories : List

C# - Null reference exception was unhandled - object reference not set to an instance of an object
When your Insert method hits a leaf, currentNode.left or currentNode.right will be null. At this point, you're not checking for null, so you'll receive this exception on that line as you try to access the color. You need to add null checks on insert to handle the leaf condition.

Categories : C#

Exception; "Object reference not set to an instance of an object" trying to keep an instance in Dictionary
I don't know if changing to struct is good idea. If you are know what you are doing, so be it. But remember if EPS_Instance is big structure pass over parameter in OpenConnections.Add can overflow the stock. Problem is in else statement. If TryGetValue return false, the parameter out is set to null. So next if you try to do this e_svr.ck = inputparams.ck; the NullReferenceException will raise, because e_svr IS null. In declaration of e_svr there is no point to create new instance. So your code should look like EPS_Instance e_svr; if (OpenConnections.TryGetValue(inputparams.VSId + inputparams.Username, out e_svr)) { //... } else { e_svr = new EPS_Instance(); //... }

Categories : C#

Object reference not set to an instance of an object - Null Reference Exception
You have to check this value before access it. For example, like this: var form = System.Web.HttpContext.Current.Request.Form; if (form != null && !String.IsNullOrEmpty(day) && form.AllKeys.Contains(day)) { var test = form[day].ToString(); }

Categories : C#

Unable to read attribute in Linq to xml, error: Object reference not set to an instance of an object
Attributes/Elements names are case sensitive. Replace l_sMODID = addParam.Attribute("moduleId").Value, With l_sMODID = addParam.Attribute("moduleid").Value, That's because attributes in your input XML is moduleid="F0736590-84A2-4795-BC5D-0056606F2446", not moduleId. Working code: var doc = XDocument.Load("Input.txt"); Func<XElement, IEnumerable<Item>> query = e => e.Elements("item") .Select(x => new Item { Id = (string)x.Attribute("id"), ModuleId = (string)x.Attribute("moduleid"), View = (bool)x.Attribute("view"), Add = (bool)x.Attribute("add"), Edit = (bool)x.Attribute("edit"),

Categories : C#

Object reference not set to an instance of an object. DataRow dRow2 = ds2.Tables["own"].Rows[0];?/?
You face this error because you haven't assigned any values to your dataset or your dataset hasn't got any tables or your table doesn't have any rows. so before writing the below line ds0.Tables["own"].Rows[0]; you need to check if(ds0!=null && ds0.Tables.Contains("own") && ds0.Tables["own"].Rows.Length > 0) { //your code }

Categories : C#

SOAP Webservice call from Java gives "Object reference not set to an instance of an object"
The message is from the C# web service side ("Object reference not set to an instance of an object" is basically a Java equivalent of NullPointerException) but it might be because of something you send from your Java client or maybe you don't send. The error usually means that you didn't send a required parameter and that the web service didn't do a proper job of validating it's input and missing parameter got to a point when caused the NullReferenceException. But there is only one way to be sure, and that is to troubleshoot the call. I suggest you use something like SoapUI to create a message and send that to the service. Once you get a succesfull call in SoapUI, make a call with the same parameters from your Java client and see what happens. When you do that, using a proxy for loggin

Categories : Web Services

c# Object reference not set to an instance of an object error , tried to match textbox and databse value
You have done too much confusion in adding parameters,you should add your sqlparameter object i.e.topicparam insted of topic. use @topic varibale on both places. or alternativly you can try this short hand cmd.Parameters.AddWithValue(" @topic",topic); insted of SqlParameter topicparam = new SqlParameter("@topic_name", SqlDbType.VarChar); topicparam.Value = topic; connection1.sqlcommand.Parameters.Add(topic);

Categories : SQL

Object reference not set to an instance of an object when creating observable collection from list
In this code, either db or Tables is null. var list = db.Tables.ToList(); Make sure to check that before: if (db != null && ds.Tables != null) { var list = db.Tables.ToList(); }

Categories : C#

Object reference not set to an instance of an object when attempting to assign array from list
You never initialize rootAndKey before trying to assign elements to it. Your looping logic also looks a little funny to me. I'm guessing you'll need something like: string[][] rootAndKey = new string[allRoots.Count][]; for(var i = 0; i < allRoots.Count; i++) { var subkeys = root.GetSubKeyNames(); rootAndKey[i] = new string[subkeys.Length]; for(var h = 0; h < subkeys.Length; h++) { rootAndKey[i][h] = subkeys[h]; } }

Categories : C#

Idhttp post form, get the message: Object reference not set to an instance of an object
Finally, I find out the problem, it was so hard because I'm not the owner of the site. I focused on the body and forgot there is a missing header which is required by the site. Thank you all gently men :)

Categories : Delphi

object reference not set to an instance of an object in "team foundation server" 2012
I was logged into TFS from 4 different locations accidentally. When my administrator logged me off of those, it fixed my problem. The error really through me for a loop because it was pretty odd for what the problem was.

Categories : C#

Object reference not set to an instance of an object. : grid view inside repeater
Check your gd object weather it is null or not than execute your certain conditions. Thus the code should be like below: GridView gd = (GridView)e.Item.FindControl("gvDetails"); if(gd != null) { gd.DataSource = employees; gd.DataBind(); } Edit: The error is coming because the name in the DataField="ItemDescription" of asp:BoundField doesn't match the datasource employees properties which you have specified at the time of databind. The markup code should be <asp:BoundField DataField="itemdesc" HeaderText="Item Description"/>

Categories : Asp Net

System.NullReferenceException' occurred in WindowsApplication1.exe Additional information: Object reference not set to an instance of an object
You are only declaring the variable ds. You should create an instance, before you can use the methods. Dim ds As DataSet should be Dim ds As New DataSet or Dim ds As DataSet ds = New DataSet

Categories : SQL

"Object reference not set to an instance of an object" hitting when loading a xaml page for the second time and more attempts
Never mind. I did considerable amount of research and I found what is giving me this exception. There is an async task which is GetGeopositionAsync in the page from which I am navigating to SearchLocation.xaml. If I wait in AddLocation.xaml page until the geoposition is acquired, it doesnt throw me any exception when I navigate to SearchLocation.xaml page. So I need to issue a cancellation token whenever I navigate away from the page. And IT WORKS !

Categories : C#

"Object reference not set to an instance of an object" when creating a new Web API controller with EF Scaffolding in Visual Studio 2012
Found the problem. In my model, I had a property with a custom enum type, which was in my business project. In my service project, I had my data model project referenced but not the business project. So adding a reference to the model AND business project allowed me to add scaffold controllers fine. Seems obvious I know, but the error message it gives you is so unhelpful! Anyway, I hope this helps anyone having the same problem, and can't fix it using the other suggestions.

Categories : Entity Framework

object reference not set to an instance of object exception when I try to add element to an array of type List
You haven't created any lists. When you create an array of lists, it won't automatically create all the lists in the array, you have to do that manually: List<string>[] Toursist = new List<string>[numtoursut]; for (int i = 0; i < Toursist.Length; i++) { Toursist[i] = new List<string>(); }

Categories : Asp Net

Caliburn.micro design time data for WinRT - object reference not set to an instance of an object
First off, make sure you have got the namespaces configured correctly (this gives me a headache many times). Now with that out of our way, i can tell you to try too things: Try to add these to your namespace declarations mc:Ignorable="d" and xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006". If this alone didn't work then try to replace Type=vm:SampleNewsViewModel with Type={x:Type vm:SampleNewsViewModel and see if it works.

Categories : Xaml

Data List Header Template causing 'Object reference not set to an instance of an object' error
It's difficult to diagnose this without seeing your code, but I would guess that your DataList1_ItemDataBound method is trying to find the lblExp control in the e.Item without checking the e.Item.ItemType first. This event will be raised for every item in the list, including the header, and the header doesn't contain a control called lblExp. You need to check the ItemType before processing the item: protected void DataList1_ItemDataBound(object sender, DataListItemEventArgs e) { switch (e.Item.ItemType) { case ListItemType.Item: case ListItemType.AlternatingItem: case ListItemType.SelectedItem: case ListItemType.EditItem: { Label lblExp = (Label)e.Item.FindControl("lblExp"); ... } } }

Categories : C#

Howto avoid a "object reference not set to an instance of an object" exception in XAML code while design time?
You could do something like this: using System.ComponentModel; using System.Windows; /// <summary> /// WPF Design Mode helper class. /// </summary> public static class DesignMode { private static bool? _isInDesignMode; /// <summary> /// Gets a value indicating whether the control is in design mode (running in Blend /// or Visual Studio). /// </summary> public static bool IsInDesignMode { get { if (!_isInDesignMode.HasValue) { var prop = DesignerProperties.IsInDesignModeProperty; _isInDesignMode = (bool)DependencyPropertyDescriptor .FromProperty(prop, typeof(FrameworkElement)) .Metadata.DefaultValue;

Categories : C#

Object reference not set to an instance of an object? Search result pagination
As said, check for nulls. The following is an extreme check but it's better to be safe than sorry. for (int i = 0; i < count; i++) { if (query != null && query.Keys != null && i < query.Keys.Count && query.ContainsKey(i) && query.Keys[i] != null && query.GetValues(i) != null && !query.Keys[i].Contains("ddl")) { url += string.Format( "{0}{1}={2}", i == 0 ? "?" : "&", query.Keys[i], query.Keys[i] == "category" ? string.Join("TTT", query.GetValues(i)).Replace(" ", "+") : string.Join(",", query.GetValues(i))); } }

Categories : C#

Object reference not set to an instance of an object during members registeration in umbraco
You need to check that the Membership provider is set correctly in your web.config file as it seems that your Member instance is null. Ensure that you are using the same config settings that Umbraco installed with. If in doubt, download your version again and check the original web.config settings. Update: Check that there is a default Member type set in the web.config: <membership defaultProvider="UmbracoMembershipProvider" userIsOnlineTimeWindow="15" defaultMemberTypeAlias="SiteMembers" />

Categories : C#

error Object reference not set to an instance of an object when check Facebook Like?
I can't see anything fundamentally wrong with your code, what I suspect is happening is the request form variable is null i.e. var signed_request = Request.Form["signed_request"]; the payload variable is being set to a null or empty string. I'd check this and make sure the value is what you expect. A good idea here is to add a guard clause in DecodePayload to make sure the payload variable has a value before calling the Split method. e.g. if (string.IsNullOrEmpty(payload)) throw new ArgumentNullException();

Categories : C#

MVC 4 : Unit Testing error "Object reference not set to an instance of an object."
After stubbing the method use "Return" to indicate what should it return, for example: _mockRepository .Stub(x => x.GetModuleKindPropertyNames(Arg<string>.Is.Anything)) .Return(Enumerable.Empty<string>().AsQueryable()); Also, change this line: _controller.GetModulePropertyName(Arg<string>.Is.Anything); to this: _controller.GetModulePropertyName(string.Empty); As the exception explains - Arg is only to be used in mock definitions.

Categories : C#

When i try to execute foreach statement i am getting -Object reference not set to an instance of an object
<div class="Page" onclick="location.href='@Url.Action("Info", new { id = item.ID })'"> Change this to: <div class="Page" onclick="location.href='@Url.Action('LinkText','Info', new { id = item.ID })'"> Note the quote marks around Info edit: Added extra argument to link.

Categories : Asp Net Mvc

Object reference not set to an instance of an object error in SSIS package
With the given informations, I can guess that : The problem Variables var = null; You initialize your variable with a null valu and then you use it without giving a value. Because you use it there (probably where you get the exception too) Dts.VariableDispenser.LockOneForWrite("User::Region", ref var); Also If the line of code above doesn't set a value to var, your program could crash : There: var[0].Value = "DEFAULT"; There: var[0].Value = "European"; There: var[0].Value = "American"; There: var[0].Value = "Asian"; There: var[0].Value = "Unknown"; Or There: var.Unlock(); Possible Solution Try giving it a valid value instead of null to make sure the problem is there.

Categories : C#

NullReferenceException: Object reference not set to an instance of an object. Error show in Asp.net using c#
Seems pretty obvious, word is not set to an instance; in other words word is null. Put a check to make sure word is not used unless it is instantiated as something, like this: if(word != null) { // Do stuff with word, because you know it actually exists now } Note: This is referred to as defensive programming and will eliminate almost all NullReferenceExceptions in your code. It also has the added benefit of making you think about what you should do with your code in case a particular object is null (such as should this should be reported to the user, should this cause the application to end, etc.).

Categories : Asp Net

NullReferenceException. Object reference not set to an instance of an object C# Visual Studio
Assign a new instance of the list to the property first: public List<Item> { get; set; } // in constructor: public ListTable() { Items = new List<Item>(); }

Categories : C#

Error :System.NullReferenceException: Object reference not set to an instance of an object
using (DataSet ds = new DataSet()) { DataTable dt = new DataTable(); ds.Tables.Add(dt); string str = "User ID=username;Password=password;Data Source=Test"; SqlConnection conn = new SqlConnection(str); conn.Open(); SqlCommand cmd = new SqlCommand(); cmd.Connection = conn; cmd.CommandText = "select * from table_name"; cmd.CommandType = CommandType.Text; SqlDataAdapter da = new SqlDataAdapter(cmd); da.Fill(dt); if(dt!=null) { GridView2.DataSource = dt; GridView2.DataBind(); } }

Categories : C#

VB.NET WebBrowser Control Programmatically Filling Form After Changing User-Agent (Object reference not set to an instance of an object.)
Do you realize .All("btnK") returns a collection? So, you are doing .InvokeMember("click") on a Collection :). You cannot do that, you can only do .InvokeMember("click") on an element for obvious reasons! Try this: wb.Document.All("btnK").Item(0).InvokeMember("click") The .Item(0) returns the first element in the collection returned by .All("btnK"), and since there will only probably be one item returned, since there is only one on the page, you want to do the InvokeMember on the first item, being .Item(0). May I ask what it is you are developing? Since you're a new user, please up-vote and/or accept if this answered your question.

Categories : Vb.Net

System.NullReferenceException: Object reference not set to an instance of an object WPF
SelectSingleNode will return null if no matching node is found. without checking for null you are accessing properties of returned node ( like InnerText). it will cause System.NullReferenceException if you get exception for node named fees, check you have such node in given XML

Categories : C#

Solve Error: Object reference not set to an instance of an object
I was just running into this problem earlier today. This error means that the value you are supposed to have initialized in "ans" is null. Try to debug it and make sure that it actually stores a value.

Categories : Asp Net

error message: Object reference not set to an instance of an object
Change your code as follow else if (period.ToString().Equals("3 years")&&Session["@loanID"]!=null) { for (int i = 0; i <= 36; i++) { string strCommandText5 = "INSERT INTO AutoTrans VALUES(@loanID,@transPeriod,null,@transStatus);"; SqlCommand myCommand5 = new SqlCommand(strCommandText5, myConnection); myCommand5.Parameters.AddWithValue("@loanID", Session["@loanID"].ToString()); myCommand5.Parameters.AddWithValue("@transPeriod", numPeriod); myCommand5.Parameters.AddWithValue("@transStatus", status); numPeriod++; myCommand5.ExecuteNonQuery(); } }

Categories : C#

"Object reference not set to an instance of an object" even when I checked null
You can try to use count too, like this: IEnumerable<Room> room=... if (room == null) // Check for nulls return null; else if (room.count() == 0) // Check if empty return null; else if(!room.Any(x => x.Beds == null) // Check if there is no null Beds return room.SelectMany(r=>r.Beds);

Categories : C#

Object reference not set to an instance of an object while Adding Parameter
That is because your Doctor and Room are not initialized anyhere: Resident hello = new Resident(); hello.Doctor = new Doctor(); hello.Room = new Room(); but that update will probably fail as there is no meaningful data in resident and rowsAffected will return 0 probably.

Categories : C#

'Activate Features': Object reference not set to an instance of an object
I'm going to assume that you have a Site scoped feature and that your NullReferenceException is being caused by you attempting to cast properties.Feature.Parent as SPWeb. If my assumption about your feature being Site scoped is correct you can't get access to an SPWeb the way you are trying. Try this instead: public override void FeatureActivated(SPFeatureReceiverProperties properties) { SPSite siteCollection = properties.Feature.Parent as SPSite; if (siteCollection != null) { SPWeb web = siteCollection.RootWeb; // Rest of your code here. } }

Categories : C#

Can anybody tell me why I keep getting "Object reference not set to an instance of an object." when running this code?
Most likely, you never initialize Globals.arrColumnTypesList. Try something like this before the loop: Globals.arrColumnTypesList = new List<string>(); Or (depending on the type of arrColumnTypesList): Globals.arrColumnTypesList = new string[dt.Columns.Count];

Categories : C#



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