> I have a collection that I add my objects to.  When I go to remove an
> object
> from the collect I get an error {"Cannot remove the specified item
> because
> it was not found in the specified Collection."}
> Now I do understand what it is saying but I know the object is in the
> collection.
> Here is the code I am using.
>
> CurrentEPCInfo.ID = "Kleenex";
>
> CurrentEPCInfo.EPC = "30540232801ADB0000000006";
>
> CurrentEPCInfo.PIC = @"C:\Visual Studio
> Projects\RFID\KCC.MPAM.RFID.RocketCart\KCC.MPAM.RFID.RocketCart\Pics\K
> leenexTissue.jpg";
>
> CartEPCs.Remove(CurrentEPCInfo);
>
> Now what really confuses me is if I do this
>
> LoadedEPCs.Add(CurrentEPCInfo);
>
> LoadedEPCs.Remove(CurrentEPCInfo);
>
> Add it and then remove it right away it works.
>
> Any idea's?
>
> TIA,
> Brett

"Tim Patrick" <inva***@invalid.com.invalid> wrote in message
news:e3b469760cd98c8c564446a6bc2@newsgroups.comcast.net...
> When using reference types (and probably when using complex value types),
> the Remove() method only removes the specific instance of an object. It
> doesn't remove an instance that just happens to contain the same member
> values as one already in the collection. To remove the specific item, you
> would first need to get a reference to the actual instance in the
> collection, and then call Remove(), passing it that reference. For
> instance, the following code would scan through the list and remove the
> item you seek.
>
>> For Each scanItem As EPCInfoClass In LoadedEPCs
>>    If (scanItem.EPC = "30540232801ADB0000000006") Then
>>       LoadedEPCs.Remove(scanItem)
>>       Exit For
>>    End If
>> Next scanItem
>
> There are other ways to accomplish this. You could override the Equals
> method for the class and use it to locate matching items.
>
>>    Public Overrides Function Equals(ByVal obj As Object) As Boolean
>>        ' ----- Allow IndexOf() and Contains() searches.
>>        If (TypeOf obj Is String) Then
>>            Return CBool(CStr(obj) = Me.EPC)
>>        Else
>>            Return MyBase.Equals(obj)
>>        End If
>>    End Function
>
> Then you could use a statement like this.
>
>> LoadedEPCs.RemoveAt(LoadedEPCs.IndexOf("30540232801ADB0000000006"))
>
> -----
> Tim Patrick
> Start-to-Finish Visual Basic 2005
>
>> I have a collection that I add my objects to.  When I go to remove an
>> object
>> from the collect I get an error {"Cannot remove the specified item
>> because
>> it was not found in the specified Collection."}
>> Now I do understand what it is saying but I know the object is in the
>> collection.
>> Here is the code I am using.
>>
>> CurrentEPCInfo.ID = "Kleenex";
>>
>> CurrentEPCInfo.EPC = "30540232801ADB0000000006";
>>
>> CurrentEPCInfo.PIC = @"C:\Visual Studio
>> Projects\RFID\KCC.MPAM.RFID.RocketCart\KCC.MPAM.RFID.RocketCart\Pics\K
>> leenexTissue.jpg";
>>
>> CartEPCs.Remove(CurrentEPCInfo);
>>
>> Now what really confuses me is if I do this
>>
>> LoadedEPCs.Add(CurrentEPCInfo);
>>
>> LoadedEPCs.Remove(CurrentEPCInfo);
>>
>> Add it and then remove it right away it works.
>>
>> Any idea's?
>>
>> TIA,
>> Brett
>
>