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Editorial Team
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Asked: 2026-05-15T19:21:31+00:00

I am looking at somebody else’s code and in it there is a user

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I am looking at somebody else’s code and in it there is a user control:

<UserControl:Comments ID="Comments1" runat="server" ObjectID="4" ObjectRecordID='<%#((Alert)Container.DataItem).AlertId %>'></UserControl:Comments>

What I don’t quite understand is how the value for ObjectRecordID gets assigned. I
understand by looking at the code that AlerId is getting assigned to ObjectRecordID
but how is ((Alert)Container.DataItem).AlertId grabbing its value?

Thanks.

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1 Answer

  1. Editorial Team

    Container refers to the parent control of the comment box, which would be a single “row” of the Repeater.

    Container.DataItem is a single object from the collection to which the Repeater is databound. Specifically, the object that is bound to the “row” being processed.

    (Alert)Container.DataItem takes the DataItem and casts it as an Alert reference.

    .AlertId grabs the AlertId property of the Alert object that resulted from the previous step, so that its value can be assigned to the ObjectRecordID property of the Comments control.

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