Add value to collection of type DataItemsCollection exception w/ Specific Fields

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Darlene Banta posted over 9 years ago

Hi,

We're currently encountering an issue where we get a "Add value to collection of type 'Infragistics.Windows.DataPresenter.DataPresenterBase+DataItemsCollection' threw an exception.'" exception whenever the application is launched.

Additionally, we get a "Can't add items to a DataPresenter that is bound to a DataSource". I don't think we're trying to add items, I only want to present the items from the collection in a certain way, my understanding is that Field Labels was the way to achieve this. This only occurs when we set AutoGenerateFields = False and specify a set of fields in the FieldLayout. I've attached a sample project showing this behavior.

<Grid>

<igDP:XamDataGrid DataSource="{Binding AlgorithmVersions}"

ScrollingMode="DeferredWithScrollTips"

RecordFilterDropDownPopulating="Grid_OnRecordFilterDropDownPopulating">

<igDP:XamDataGrid.FieldSettings>

<igDP:FieldSettings AllowEdit="True"

AllowResize="False"

AllowFixing="Near"

AllowRecordFiltering="True"

CellClickAction="SelectRecord"

EditorStyleSelector="{StaticResource FieldStyleSelector}"/>

</igDP:XamDataGrid.FieldSettings>

<igDP:XamDataGrid.FieldLayoutSettings>

<igDP:FieldLayoutSettings AllowAddNew="True"

HeaderPrefixAreaDisplayMode="FieldChooserButton"

AllowFieldMoving="WithinLogicalRow"

AddNewRecordLocation="OnTopFixed"

HighlightAlternateRecords="True"

AutoGenerateFields="False"

AllowClipboardOperations="All"/>

</igDP:XamDataGrid.FieldLayoutSettings>

<igDP:FieldLayout>

<igDP:FieldLayout.Fields>

<igDP:Field Name="PRIORITY" Label="Priority"/>

<igDP:Field Name="RESPONSE_CRITERIA" Label="Response Criteria"/>

<igDP:Field Name="CONSEQUENCE_CLASS_CL" Label="Consequence Classification"/>

<igDP:Field Name="RESPONSE_CLASS_CL" Label="Response Classification"/>

<igDP:Field Name="PRIORITY" Label="Response Schedule (Days)"/>

<igDP:Field Name="PRESSURE_REDUCTION_CL" Label="Pressure Reduction"/>

</igDP:FieldLayout.Fields>

</igDP:FieldLayout>

</igDP:XamDataGrid>

</Grid>

XamDataGrid_SpecifiedFields.zip

16495

Offline [Infragistics]Zhivko Nikolov posted over 9 years ago in reply to Darlene Banta

Hello Darlene,

I am very glad that my suggestion was helpful for you. Please let me know if you need any further assistance on the matter.
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Darlene Banta posted over 9 years ago in reply to [Infragistics]Zhivko Nikolov

Your suggestion resolved the problem, thank you!
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Offline [Infragistics]Zhivko Nikolov posted over 9 years ago in reply to [Infragistics]Zhivko Nikolov

Hello Darlene,

I am just checking your progress on the issue that you are having.

If you require any further assistance please do not hesitate to ask.
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Offline [Infragistics]Zhivko Nikolov posted over 9 years ago

Hello Darlene,

Thank you for your post.

I have been looking into the code snippet that you have provided. It seems that the exception comes from the declaration of FieldLayout. You should put the FieldLayout between IgDP:XamDataGrid.FieldLayouts tags. I modified your sample application as I implemented this approach and works.

<igDP:XamDataGrid.FieldLayouts>

            <igDP:FieldLayout>

                <igDP:FieldLayout.Fields>

                              .......

               </igDP:FieldLayout.Fields>

       </igDP:FieldLayout>

</igDP:XamDataGrid.FieldLayouts>

Please let me know if you need any further assistance on this matter.
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