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PO.dbml .cs File throws Object reference not set to an instance of an object
 

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  1. PO.dbml .cs File throws Object reference not set to an instance of an object
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    <p>I have a listview bound to a LinqDataSource</p> <p>I have steped thorugh the code and it gets to this section of the .dbml file of the xx.designer.cs</p> <pre><code>public System.Data.Linq.Table&lt;qtxt_Competition&gt; qtxt_Competitions { get{ return this.GetTable&lt;qtxt_Competition&gt;(); } } </code></pre> <p>and once it passes the return it throws this error</p> <blockquote> <p>at System.Web.UI.WebControls.QueryableDataSourceView.OriginalValueMatches(Object originalValue, Object value) at System.Web.UI.WebControls.QueryableDataSourceView.GetOriginalValues(IDictionary keys) at System.Web.UI.WebControls.QueryableDataSourceView.BuildUpdateObjects(IDictionary keys, IDictionary values, IDictionary oldValues, IDictionary`2 validationErrors) at System.Web.UI.WebControls.QueryableDataSourceView.ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues) at System.Web.UI.WebControls.ContextDataSourceView.ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues) at System.Web.UI.WebControls.LinqDataSourceView.ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues) at System.Web.UI.DataSourceView.Update(IDictionary keys, IDictionary values, IDictionary oldValues, DataSourceViewOperationCallback callback) at System.Web.UI.WebControls.ListView.HandleUpdate(ListViewItem item, Int32 itemIndex, Boolean causesValidation) at System.Web.UI.WebControls.ListView.HandleEvent(EventArgs e, Boolean causesValidation, String validationGroup) at System.Web.UI.WebControls.ListView.OnBubbleEvent(Object source, EventArgs e) at System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) at System.Web.UI.WebControls.ListViewDataItem.OnBubbleEvent(Object source, EventArgs e) at System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) at System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) at System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) at System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)<br> at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)</p> </blockquote> <p>Ok the strange thing is that for some records it will update fine but for other it keeps throwing this error</p> <p>Any ideas?</p>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USBen Trengrove
    1. USjohn.g.enseer
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    1. This table or related slice is empty.
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      1. PO.dbml .cs File throws Object reference not set to an instance of an object
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      1. PO.dbml .cs File throws Object reference not set to an instance of an object
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    1. This table or related slice is empty.
 

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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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