public static object GetObjectValue(this SPListItem item, SPField field)
{
object result = null;
switch (field.Type)
{
case SPFieldType.Text:
{
result = item.GetStringValue(field);
break;
}
case SPFieldType.Number:
case SPFieldType.Currency:
{
result = item.GetNumberValue(field);
break;
}
case SPFieldType.DateTime:
{
result = item.GetDateTimeValue(field);
break;
}
case SPFieldType.MultiChoice:
{
var multiChoice = item.GetMultipleChoiceValueCollection(field);
if (multiChoice != null)
{
result = multiChoice.ToString();
}
break;
}
case SPFieldType.Choice:
{
result = item.GetChoiceValue(field);
break;
}
case SPFieldType.Lookup:
{
var lookupField = (field as SPFieldLookup);
if (lookupField != null)
{
if (lookupField.AllowMultipleValues)
{
var lookupValue = item.GetLookupValueCollection(field);
if (lookupValue != null)
{
result = lookupField.IsRelationship ?
String.Join(",", lookupValue.Select(value => value.LookupId)) :
String.Join(",", lookupValue.Select(value => value.LookupValue));
}
}
else
{
var lookupValue = item.GetLookupValue(field);
if (lookupValue != null)
{
if (lookupField.IsRelationship)
{
result = lookupValue.LookupId;
}
else
{
result = lookupValue.LookupValue;
}
}
}
}
break;
}
case SPFieldType.Boolean:
{
result = item.GetTrueFalseValue(field);
break;
}
case SPFieldType.User:
{
var userValue = item.GetUserValue(field);
if (userValue != null)
{
result = (userValue.User == null) ? userValue.LookupValue : userValue.User.LoginName;
}
break;
}
case SPFieldType.URL:
{
var url = item.GetUrlValue(field);
if (url != null)
{
result = url.Url;
}
break;
}
default:
{
var defaultValue = item[field.Id].ToString();
if (!string.IsNullOrWhiteSpace(defaultValue))
{
result = defaultValue.Contains(";#") ? String.Join(",",
new SPFieldLookupValueCollection(defaultValue).Select(value => value.LookupId)) : defaultValue;
}
break;
}
}
return(result);
}