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DataRepeater.ItemValueNeeded Event

Occurs when the VirtualMode property is set to True and a new value for a child control of a DataRepeaterItem is needed.

Namespace:  Microsoft.VisualBasic.PowerPacks
Assembly:  Microsoft.VisualBasic.PowerPacks.Vs (in Microsoft.VisualBasic.PowerPacks.Vs.dll)

public event DataRepeaterItemValueEventHandler ItemValueNeeded

In virtual mode, use this event to populate the child controls with values from your data store when a DataRepeaterItem is displayed or when a new item is added.

When the VirtualMode property is set to False, this event is not raised.

For more information about how to handle events, see Consuming Events.

The following example demonstrates how to handle the ItemValueNeeded event. It assumes that you have a DataRepeater control named DataRepeater1 that has its VirtualMode property set to True, and that you have a data store for a data source named Employees.

private void dataRepeater1_ItemValueNeeded(object sender, Microsoft.VisualBasic.PowerPacks.DataRepeaterItemValueEventArgs e)
{
    if (e.ItemIndex < Employees.Count)
    {
        switch (e.Control.Name)
        {
            case "txtFirstName":
                e.Value = Employees[e.ItemIndex + 1].firstName;
                break;
            case "txtLastName":
                e.Value = Employees[e.ItemIndex + 1].lastName;
                break;
        }
    }
}

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