protected string GetFieldNameCached(Expression columnExpression)
{
string fieldName;
if (FieldNameCache.ContainsKey(columnExpression))
{
fieldName = FieldNameCache[columnExpression];
}
else
{
fieldName = _expressionUtils.GetFieldName(columnExpression);
FieldNameCache.Add(columnExpression, fieldName);
}
return(fieldName);
}