private long GetWebSize(Web currentWeb) { long tmpSize = 0; ClientRuntimeContext clientContext = currentWeb.Context; clientContext.Load(currentWeb); clientContext.ExecuteQuery(); //ListCollection lists = currentWeb.Lists; //clientContext.Load(lists); //clientContext.ExecuteQuery(); var Libraries = clientContext.LoadQuery(currentWeb.Lists.Where(l => l.BaseTemplate == 101)); clientContext.ExecuteQuery(); foreach (List tmpList in Libraries) { clientContext.Load(tmpList); clientContext.ExecuteQuery(); string Query = String.Concat( "<View>", "<ViewFields>", "<FieldRef Name='Title'/>", "<FieldRef Name='ID'/>", "<FieldRef Name='File_x0020_Size'/>", "</ViewFields>", "</View>"); CamlQuery oQuery = new CamlQuery(); ListItemCollection collListItems = tmpList.GetItems(oQuery); clientContext.Load(collListItems); //FileCollection listFiles = tmpList.RootFolder.Files; //clientContext.Load(listFiles, // files => files.Include(file => file.ETag), // files => files.Include(file => file.ListItemAllFields["File_x0020_Size"])); clientContext.ExecuteQuery(); foreach (ListItem oListItem in collListItems) { clientContext.Load(oListItem); clientContext.ExecuteQuery(); var fileSize = (string)oListItem["File_x0020_Size"]; int itemFileSize = String.IsNullOrEmpty(fileSize) ? 0 : int.Parse(fileSize); tmpSize += itemFileSize; } } return(tmpSize); }