public

staticvoid AddFieldTotheList(Uri newSiteUrl, Guid listGuid, Guid lookUpListGuid, SPFieldType fieldType, string fieldName, bool isRequiredField, string

[] stringArrayForChoiceField)

{

SPSite site =

new SPSite(string.Format("{0}"

, newSiteUrl));

using (SPSite Elevatedsitecoll = new

SPSite(site.ID))

{

try

{

using

(SPWeb currentWeb = Elevatedsitecoll.OpenWeb())

{

SPList List = currentWeb.Lists[listGuid];

SPField CheckIfFieldAlreadyCreated =

null

;

try

{ CheckIfFieldAlreadyCreated = List.Fields[fieldName]; }

catch (System.ArgumentException

ex) { ;}

if (CheckIfFieldAlreadyCreated == null

)

{

if

(fieldType == SPFieldType.Lookup)

{

SPList LookUpList = currentWeb.Lists[lookUpListGuid];

LogMessages.LogMessage(

"Creating Look Up field " + fieldName + " in the List "

+ List.Title);

SPField LookUpListTitleColumn = LookUpList.Fields[

"Title"

];

List.Fields.AddLookup(fieldName, List.ID, isRequiredField);

SPFieldLookup ListLookUpField = (SPFieldLookup)List.Fields[fieldName];

ListLookUpField.LookupField = LookUpListTitleColumn.InternalName;

ListLookUpField.Update();

LogMessages.LogMessage(

"Successfully Created Look Up field " + fieldName + " in the List "

+ List.Title);

}

elseif

(fieldType == SPFieldType.Choice)

{

LogMessages.LogMessage(

"Creating Choice field " + fieldName + " in the List "

+ List.Title);

List.Fields.Add(fieldName, fieldType, isRequiredField);

SPFieldMultiChoice ChoiceField = (SPFieldMultiChoice)List.Fields[fieldName];

foreach (string choiceValue in

stringArrayForChoiceField)

{

ChoiceField.Choices.Add(choiceValue);

}

ChoiceField.Update();

LogMessages.LogMessage(

"Successfully Created Choice field " + fieldName + " in the List "

+ List.Title);

}

else

{

LogMessages.LogMessage(

"Creating field " + fieldName + " in the List "

+ List.Title);

List.Fields.Add(fieldName, fieldType, isRequiredField);

LogMessages.LogMessage(

"Successfully Created field " + fieldName + " in the List "

+ List.Title);

}

}

else

{

LogMessages.LogMessage(fieldName +

" field in the list " + List.Title + " was already created"

);

}

}

}

catch (Exception

ex)

{

throw

(ex);

}

}

}