GridViewInfo.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using DevExpress.Web;

/// <summary>
/// Summary description for GridViewInfo
/// </summary>
public class GridViewInfo {
	public GridViewInfo() {
	}
	public GridViewInfo(ASPxGridView grid) {
		Columns = new List<ColumnInfoBase>(grid.Columns.Count);
		FilterExpression = grid.FilterExpression;
		PageIndex = grid.PageIndex;
	}
	public List<ColumnInfoBase> Columns { get; set; }
	public string FilterExpression { get; set; }
	public int PageIndex { get; set; }

	public void RestoreGridViewLayout(ASPxGridView grid) {		
		foreach (ColumnInfoBase column in Columns) {
			DataColumnInfo dataColumnInfo = column as DataColumnInfo;
			if (dataColumnInfo != null) {
				column.RestoreGridViewColumn(grid.Columns[dataColumnInfo.FieldName]);
				continue;
			}						
			if (column is CommandColumnInfo) {								
				column.RestoreGridViewColumn(GetSpecificColumn<GridViewCommandColumn>(grid));
				continue;
			}			
			if (column is BandColumnInfo) {
				column.RestoreGridViewColumn(GetSpecificColumn<GridViewBandColumn>(grid));
				continue;
			}
		}
		grid.FilterExpression = FilterExpression;
		grid.PageIndex = PageIndex;
	}

	private T GetSpecificColumn<T>(ASPxGridView grid) where T : GridViewColumn {
		foreach (GridViewColumn c in grid.Columns)
			if (c is T)	return (T)c;
		
		return null;
	}
}