Gets or sets the number of page buttons to display in the pager when the PagerSettings.Mode property is set to the PagerButtons.Numeric or PagerButtons.NumericFirstLast value.
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When the PagerSettings.Mode property is set to the PagerButtons.Numeric or PagerButtons.NumericFirstLast value, use the PagerSettings.PageButtonCount property to specify the number of page buttons to display in the pager.
The value of this property is stored in view state.