public override CompareResult Compare(string fragmentText)
{
double similarity = 0;
if (ignoreCase)
{
if (ItemKey.StartsWith(fragmentText, StringComparison.InvariantCultureIgnoreCase))
{
this.SortIndex = LevenshteinDistance(ItemKey, fragmentText, out similarity, ignoreCase) * Math.Pow(10, FilterColumns.Length + 1);
return CompareResult.VisibleAndSelected;
}
if (ItemValue.StartsWith(fragmentText, StringComparison.InvariantCultureIgnoreCase))
{
this.SortIndex = LevenshteinDistance(ItemValue, fragmentText, out similarity, ignoreCase) * Math.Pow(10, FilterColumns.Length);
return CompareResult.VisibleAndSelected;
}
if (FilterColumns != null)
{
int i = 1;
foreach (string strCol in FilterColumns)
{
if (strCol.StartsWith(fragmentText, StringComparison.InvariantCultureIgnoreCase))
{
this.SortIndex = LevenshteinDistance(strCol, fragmentText, out similarity, ignoreCase) * Math.Pow(10, FilterColumns.Length - i);
return CompareResult.VisibleAndSelected;
}
i++;
}
}
}
else
{
if (ItemKey.Contains(fragmentText))
{
this.SortIndex = LevenshteinDistance(ItemKey, fragmentText, out similarity, ignoreCase) * Math.Pow(10, FilterColumns.Length + 1);
return CompareResult.VisibleAndSelected;
}
if (ItemValue.Contains(fragmentText))
{
this.SortIndex = LevenshteinDistance(ItemValue, fragmentText, out similarity, ignoreCase) * Math.Pow(10, FilterColumns.Length);
return CompareResult.VisibleAndSelected;
}
if (FilterColumns != null)
{
int i = 1;
foreach (string strCol in FilterColumns)
{
if (strCol.ToLower().Contains(fragmentText))
{
this.SortIndex = LevenshteinDistance(strCol, fragmentText, out similarity, ignoreCase) * Math.Pow(10, FilterColumns.Length - i);
return CompareResult.VisibleAndSelected;
}
i++;
}
}
}
return CompareResult.Hidden;
}