Excel generation

Question

Hi all,
I created an excel sheet  using openxml and i wanted to retrieve list items and corresponding permission levels into excel.Iam using client object model.But iam able to get single item not all items in a list and iam not able to bind permission
levels to excel.Below is my code.please help me.
public static void ExportToExcel()
            string sheetName = @"D:\Praveen\test1.xlsx";
            using (SpreadsheetDocument package = SpreadsheetDocument.Create(sheetName, DocumentFormat.OpenXml.SpreadsheetDocumentType.Workbook))
                int id = 1;
                package.AddWorkbookPart();
                package.WorkbookPart.Workbook = new Workbook();
                package.WorkbookPart.AddNewPart<WorksheetPart>();
                ClientContext context = new ClientContext("http://aewvdlotu04law:2544/");
                List list = context.Web.Lists.GetByTitle("ExportExcel");
                SecurableObject curObj = null;
                ListItem curItem = list.GetItemById(id);
                curObj = curItem as SecurableObject;
                context.Load(list);
                context.Load(curItem);
                IEnumerable roles = null;
                roles = context.LoadQuery(
                curObj.RoleAssignments.Include(
                roleAsg => roleAsg.Member,
                roleAsg => roleAsg.RoleDefinitionBindings.Include(
                roleDef => roleDef.Name,
                roleDef => roleDef.Description)));
                CamlQuery query = new CamlQuery();
                query.ViewXml = "<View/>";
                ListItemCollection items = list.GetItems(query);
                context.Load(items);
                context.ExecuteQuery();
                package.WorkbookPart.WorksheetParts.First().Worksheet =
                  new Worksheet(
                    new SheetData(
                      new Row(
                        new Cell(
                          new InlineString(
                            new DocumentFormat.OpenXml.Spreadsheet.Text(items[0]["Title"].ToString()))) { DataType
= CellValues.InlineString })));
                //new DocumentFormat.OpenXml.Spreadsheet.Text(roles))) { DataType = CellValues.InlineString })));
                // Save changes to the spreadsheet part.
                package.WorkbookPart.WorksheetParts.First().Worksheet.Save();
                // create the worksheet to workbook relation
                package.WorkbookPart.Workbook.AppendChild(new Sheets());
                package.WorkbookPart.Workbook.GetFirstChild<Sheets>().AppendChild(new Sheet()
                   Id = package.WorkbookPart.GetIdOfPart(package.WorkbookPart.WorksheetParts.First()),
                   SheetId = 1,
                   Name = "Excel"
                package.WorkbookPart.Workbook.Save();

Answer 1

Hi,    
What do you mean you can only get single item in a list but not all the items? Since you have loaded a ListItemCollection object in your query which will indicate server to return a collection of list items.
Here is a link about How to: Retrieve List Items:
http://social.technet.microsoft.com/Forums/en-US/c208928f-1827-4f10-973f-adb099e18586/excel-generation?forum=sharepointdevelopmentprevious
It is recommended to debug your code and watch the objects in use to see whether they hold the proper value after the query succeeded, this will provide you more information to troubleshoot this issue.
Another link about working with spreadsheet documents using the Open XML SDK 2.5:
http://msdn.microsoft.com/en-us/library/office/cc850837.aspx
Best regards
Patrick Liang
TechNet Community Support