/// <summary>
/// This method applies the filter value.
/// </summary>
protected void OnFilterInput()
{
//start with a new list
if (FilteredList == null)
{
FilteredList = new List <T>();
}
else
{
FilteredList?.Clear();
}
//used when there are more than one filter values
List <T> removeList = new List <T>();
bool firstFilter = false;
//for each filter input
foreach (KeyValuePair <string, string> entry in FilterDictionary)
{
if (!string.IsNullOrWhiteSpace(entry.Value))
{
if (!firstFilter) //get all the matches for the first filter value
{
foreach (T item in OriginalList)
{
string columnValue = typeof(T).GetProperty(entry.Key)?.GetValue(item).AsString().Trim();
if (columnValue.Contains(entry.Value, StringComparison.CurrentCultureIgnoreCase))
{
FilteredList.Add(item);
}
}
firstFilter = FilteredList.Count > 0;
}
else
{
foreach (T item in FilteredList) //for subsequent filter value build a list of items that do not match
{
string columnValue = typeof(T).GetProperty(entry.Key)?.GetValue(item).AsString().Trim();
if (!columnValue.Contains(entry.Value, StringComparison.CurrentCultureIgnoreCase))
{
removeList.Add(item);
}
}
}
}
}
//remove the items that do not match the filters
FilteredList = FilteredList.Except(removeList).ToList();
//set the FilterActive flag
FilterActive = FilteredList.Count > 0;
SetPageCount(FilteredList);
GetPage("first");
}