Control.OnDataBinding Method
.NET Framework 3.0
Raises the DataBinding event.
Namespace: System.Web.UI
Assembly: System.Web (in system.web.dll)
Assembly: System.Web (in system.web.dll)
The following example demonstrates how to override the OnDataBinding method to add child controls to the parent control from a data source.
// Override to create the repeated items from the DataSource.
protected void OnDataBinding(EventArgs e)
{
super.OnDataBinding(e);
if (get_DataSource() != null) {
// Clear any existing child controls.
get_Controls().Clear();
// Clear any previous view state for the existing child controls.
ClearChildViewState();
// Iterate over the DataSource, creating a new item for each
// data item.
IEnumerator dataEnum = get_DataSource().GetEnumerator();
int i = 0;
while (dataEnum.MoveNext()) {
// Create an item.
RepeaterItem item = new RepeaterItem(i, dataEnum.get_Current());
// Initialize the item from the template.
get_ItemTemplate().InstantiateIn(item);
// Add the item to the ControlCollection.
get_Controls().Add(item);
i++;
}
// Prevent child controls from being created again.
set_ChildControlsCreated(true);
// Store the number of items created in view state for postback
// scenarios.
get_ViewState().set_Item("NumItems", (Int32)i);
}
} //OnDataBinding
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