public static SPField EnsureField(this SPList list, SPFieldType type, string displayName, string internalName, bool isRequired, SPCalendarType calendarType)
{
var field = list.EnsureField(type, displayName, internalName, isRequired);
if (field.Type == SPFieldType.DateTime)
{
try
{
if (!list.Fields.ContainsField(internalName))
{
list.Fields.Add(internalName, SPFieldType.DateTime, false);
list.Update();
(field as SPFieldDateTime).DisplayFormat = SPDateTimeFieldFormatType.DateOnly;
(field as SPFieldDateTime).CalendarType = calendarType;
field.Update();
}
else
{
(field as SPFieldDateTime).DisplayFormat = SPDateTimeFieldFormatType.DateOnly;
(field as SPFieldDateTime).CalendarType = calendarType;
field.Update();
}
}
catch (Exception ex)
{
Log.Error(ex);
}
}
return(field);
}
public static SPField EnsureField(this SPList list, SPFieldType type, string displayName, string internalName, bool isRequired, string formula)
{
var field = list.EnsureField(type, displayName, internalName, isRequired);
if (field.Type == SPFieldType.Calculated)
{
var strNewField = (SPFieldCalculated)field;
strNewField.Formula = formula;
strNewField.Update();
}
return(field);
}