I have a SPListItem, with different fields (string, lookup, etc), that I have to iterate them and do different actions depending of the type.

How can I detect if value is type String or type Lookup?

  value = spListItem["nameField"];  // is string or lookup?

2 Answers 2


You can simply use the C# is operation. Ie.

if (value is SPFieldLookupValue) {}

try this

string tipoCampo = itemCollection.Fields[ColumnsAssignation.ComboText].TypeAsString;
if (tipoCampo == "Lookup") {}

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