Do you need to use the {} brackets when grabbing an field by the GUID

Question

When trying to grab a field by guid, do you need to surround the guid with {}? E.g.

field["{xxx343-xx-324-xxx}"]

or

field["xxx343-xx-324-xxx"]

Answer 1

SPListItem has 3 "Item" methods defined that take an identifier between brackets:

• item[string fieldName]
• item[int index]
• item[Guid fieldId]

You seem to be trying to use item[Guid fieldId], but you are providing a string, not a Guid structure, so in effect you are calling item[string fieldName] and thus SharePoint expects a field name, not a field id.

You should be calling your method like so:

item[new Guid("{936DA01F-9ABD-4d9d-80C7-02AF85C822A8}"]

to properly form a Guid structure. With or without curly braces { } or parenthesis ( ), as the Guid constructor accepts both. Do NOT use square brackets [ ].