public async Task <List <KeyValuePair <string, string> > > GetLookupItems(Model.FieldLookup lookup)
{
if (lookup.LookupWebId == Guid.Empty || string.IsNullOrEmpty(lookup.LookupList))
{
return(null);
}
using (var context = CreateContext(lookup.List.Web.Url))
{
var lookupField = string.IsNullOrEmpty(lookup.LookupField) ? "Title" : lookup.LookupField;
var caml = $@"
<Query>
<Where />
</Query>";
ListItemCollection pageItems = null;
var pageSize = 2000;
var items = new List <KeyValuePair <string, string> >();
var web = context.Site.OpenWebById(lookup.LookupWebId);
var list = web.Lists.GetById(Guid.Parse(lookup.LookupList));
do
{
var rowLimit = $"<RowLimit>{pageSize}</RowLimit>";
var listQuery = new CamlQuery
{
ViewXml = $"<View Scope='RecursiveAll'>{caml}{rowLimit}</View>",
ListItemCollectionPosition = pageItems?.ListItemCollectionPosition
};
pageItems = list.GetItems(listQuery);
context.Load(pageItems,
elements => elements.Include(
i => i.Id,
i => i[lookupField]
),
elements => elements.ListItemCollectionPosition);
await Task.Factory.StartNew(() => context.ExecuteQuery());
items.AddRange(
pageItems
.Cast <ListItem>()
.Select(i => new KeyValuePair <string, string>(
i.Id.ToString(),
i[lookupField] != null ? i[lookupField].ToString() : string.Empty
)
)
);
}while (pageItems?.ListItemCollectionPosition != null);
return(items
.OrderBy(i => i.Value)
.ToList());
}
}
private Model.Field CreateField(SPField listField)
{
Model.Field field;
switch (listField.Type)
{
case SPFieldType.Choice:
field = new Model.FieldChoice
{
Choices = ((SPFieldChoice)listField).Choices.Cast <string>().ToList()
};
break;
case SPFieldType.MultiChoice:
field = new Model.FieldChoice
{
Choices = ((SPFieldMultiChoice)listField).Choices.Cast <string>().ToList()
};
break;
case SPFieldType.DateTime:
field = new Model.FieldDateTime {
DateOnly = ((SPFieldDateTime)listField).DisplayFormat == SPDateTimeFieldFormatType.DateOnly
};
break;
case SPFieldType.Lookup:
field = new Model.FieldLookup {
AllowMultivalue = ((SPFieldLookup)listField).AllowMultipleValues
};
break;
default:
field = new Model.Field();
break;
}
field.Id = listField.Id;
field.IsHidden = listField.Hidden;
field.IsReadonly = listField.ReadOnlyField;
field.Title = listField.Title;
field.InternalName = listField.InternalName;
field.Group = listField.Group;
field.Type = (Model.FieldType)listField.Type;
return(field);
}
private Model.Field CreateField(Field listField)
{
Model.Field field;
switch (listField.FieldTypeKind)
{
case FieldType.Choice:
field = new Model.FieldChoice
{
Choices = ((Client.FieldChoice)listField).Choices
};
break;
case FieldType.MultiChoice:
field = new Model.FieldChoice
{
Choices = ((Client.FieldMultiChoice)listField).Choices
};
break;
case FieldType.DateTime:
field = new Model.FieldDateTime { DateOnly = ((Client.FieldDateTime)listField).DisplayFormat == DateTimeFieldFormatType.DateOnly };
break;
case FieldType.Lookup:
field = new Model.FieldLookup { AllowMultivalue = ((Client.FieldLookup)listField).AllowMultipleValues };
break;
case FieldType.User:
field = new Model.FieldLookup { AllowMultivalue = ((Client.FieldUser)listField).AllowMultipleValues };
break;
case FieldType.Invalid:
switch (listField.TypeAsString)
{
case "TaxonomyFieldType":
field = new Model.FieldTaxonomy {AllowMultivalue = false, Type = Model.FieldType.Taxonomy, IsReadonly = true};
break;
case "TaxonomyFieldTypeMulti":
field = new Model.FieldTaxonomy { AllowMultivalue = true, Type = Model.FieldType.Taxonomy, IsReadonly = true};
break;
default:
field = new Model.Field();
break;
}
break;
default:
field = new Model.Field();
break;
}
field.Id = listField.Id;
field.IsHidden = listField.Hidden;
field.IsReadonly |= listField.ReadOnlyField;
field.Title = listField.Title;
field.InternalName = listField.InternalName;
field.Group = listField.Group;
if( field.Type == 0 ) field.Type = (Model.FieldType)listField.FieldTypeKind;
return field;
}
private Model.Field CreateField(SPField listField)
{
Model.Field field;
switch (listField.Type)
{
case SPFieldType.Choice:
field = new Model.FieldChoice
{
Choices = ((SPFieldChoice)listField).Choices.Cast<string>().ToList()
};
break;
case SPFieldType.MultiChoice:
field = new Model.FieldChoice
{
Choices = ((SPFieldMultiChoice)listField).Choices.Cast<string>().ToList()
};
break;
case SPFieldType.DateTime:
field = new Model.FieldDateTime { DateOnly = ((SPFieldDateTime)listField).DisplayFormat == SPDateTimeFieldFormatType.DateOnly };
break;
case SPFieldType.Lookup:
field = new Model.FieldLookup {AllowMultivalue = ((SPFieldLookup)listField).AllowMultipleValues};
break;
default:
field = new Model.Field();
break;
}
field.Id = listField.Id;
field.IsHidden = listField.Hidden;
field.IsReadonly = listField.ReadOnlyField;
field.Title = listField.Title;
field.InternalName = listField.InternalName;
field.Group = listField.Group;
field.Type = (Model.FieldType)listField.Type;
return field;
}
private Model.Field CreateField(Field listField)
{
Model.Field field;
switch (listField.FieldTypeKind)
{
case FieldType.Choice:
field = new Model.FieldChoice
{
Choices = ((Client.FieldChoice)listField).Choices
};
break;
case FieldType.MultiChoice:
field = new Model.FieldChoice
{
Choices = ((Client.FieldMultiChoice)listField).Choices
};
break;
case FieldType.DateTime:
field = new Model.FieldDateTime {
DateOnly = ((Client.FieldDateTime)listField).DisplayFormat == DateTimeFieldFormatType.DateOnly
};
break;
case FieldType.Lookup:
field = new Model.FieldLookup {
AllowMultivalue = ((Client.FieldLookup)listField).AllowMultipleValues,
LookupField = ((Client.FieldLookup)listField).LookupField,
LookupList = ((Client.FieldLookup)listField).LookupList,
LookupWebId = ((Client.FieldLookup)listField).LookupWebId
};
break;
case FieldType.User:
field = new Model.FieldLookup {
AllowMultivalue = ((Client.FieldUser)listField).AllowMultipleValues,
LookupField = ((Client.FieldLookup)listField).LookupField,
LookupList = ((Client.FieldUser)listField).LookupList,
LookupWebId = ((Client.FieldUser)listField).LookupWebId
};
break;
case FieldType.Invalid:
switch (listField.TypeAsString)
{
case "TaxonomyFieldType":
field = new Model.FieldTaxonomy {
AllowMultivalue = false, Type = Model.FieldType.Taxonomy, IsReadonly = true
};
break;
case "TaxonomyFieldTypeMulti":
field = new Model.FieldTaxonomy {
AllowMultivalue = true, Type = Model.FieldType.Taxonomy, IsReadonly = true
};
break;
default:
field = new Model.Field();
break;
}
break;
default:
field = new Model.Field();
break;
}
field.Id = listField.Id;
field.IsHidden = listField.Hidden;
field.IsReadonly |= listField.ReadOnlyField;
field.Title = listField.Title;
field.InternalName = listField.InternalName;
field.Group = listField.Group;
if (field.Type == 0)
{
field.Type = (Model.FieldType)listField.FieldTypeKind;
}
return(field);
}