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Home/ Questions/Q 7499055
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Editorial Team
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Editorial Team
Asked: May 29, 20262026-05-29T19:41:06+00:00 2026-05-29T19:41:06+00:00

I am getting an error when deleting rows from an observablecollection which is bound

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I am getting an error when deleting rows from an observablecollection which is bound to a datagrid in silverlight.

System.NullReferenceException: Object reference not set to an instance of an object.at at System.Collections.ObjectModel.ObservableCollection`1.RemoveItem(Int32 index)

if (GV.orderItemList.Contains(oOrdritem))
    GV.orderItemList.Remove(oOrdritem);

The first time, I delete a record, its working fine, the second time, it gives the above exception

enter image description here

please please please help

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  1. Editorial Team
    Editorial Team
    2026-05-29T19:41:09+00:00Added an answer on May 29, 2026 at 7:41 pm

    I sorted the problem using the code below:

    dgOrderItems.CommitEdit(DataGridEditingUnit.Row, true);
    

    The row which was currently focused was still in edit mode which was causing the exception.

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