private void MatchExcelAndDbColumns()
{
foreach (GridViewRow row in dgvColumns.Rows)
{
string excelCol = row.Cells[0].Text.Trim().ToUpper();
IQueryable <ListItem> dbColItems = (row.Cells[1].FindControl("ItemDropDown") as DropDownList).Items.Cast <ListItem>().AsQueryable() as IQueryable <ListItem>;
string[] dbCols = dbColItems.Where(i => !i.Value.Contains("IGNORE")).Select(i => i.Value).ToArray();
string bestMatch = LevenshteinDistance.FindBestMatch(excelCol, dbCols);
ListItem bestItem = (row.Cells[1].FindControl("ItemDropDown") as DropDownList).Items.FindByValue(bestMatch);
if (bestItem != null)
{
bestItem.Selected = true;
}
}
}