outlookgrid以Outlook样式分组和排列数据项(C#)

<?xml version="1.0" standalone="yes"?> <DocumentElement> <invoice> <CustomerID>VINET</CustomerID> <CustomerName>Vins et alcools Chevalier</CustomerName> <Address>59 rue de l'Abbaye</Address> <City>Reims</City> <Country>France</Country> <OrderDate>7/4/1996</OrderDate> <ProductName>Queso Cabrales</ProductName> <Price>168</Price> </invoice> <invoice> <CustomerID>VINET</CustomerID> <CustomerName>Vins et alcools Chevalier</CustomerName> <Address>59 rue de l'Abbaye</Address> <City>Reims</City> <Country>France</Country> <OrderDate>7/4/1996</OrderDate> <ProductName>Singaporean Hokkien Fried Mee</ProductName> <Price>98</Price> </invoice> <invoice> <CustomerID>VINET</CustomerID> <CustomerName>Vins et alcools Chevalier</CustomerName> <Address>59 rue de l'Abbaye</Address> <City>Reims</City> <Country>France</Country> <OrderDate>7/4/1996</OrderDate> <ProductName>Mozzarella di Giovanni</ProductName> <Price>174</Price> </invoice> <invoice> <CustomerID>TOMSP</CustomerID> <CustomerName>Toms Spezialitten</CustomerName> <Address>Luisenstr. 48</Address> <City>Mnster</City> <Country>Germany</Country> <OrderDate>7/5/1996</OrderDate> <ProductName>Tofu</ProductName> <Price>167.4</Price> </invoice> <invoice> <CustomerID>TOMSP</CustomerID> <CustomerName>Toms Spezialitten</CustomerName> <Address>Luisenstr. 48</Address> <City>Mnster</City> <Country>Germany</Country> <OrderDate>7/5/1996</OrderDate> <ProductName>Manjimup Dried Apples</ProductName> <Price>1696</Price> </invoice> <invoice> <CustomerID>HANAR</CustomerID> <CustomerName>Hanari Carnes</CustomerName> <Address>"Rua do Pao, 67"</Address> <City>Rio de Janeiro</City> <Country>Brazil</Country> <OrderDate>7/8/1996</OrderDate> <ProductName>Jack's New England Clam Chowder</ProductName> <Price>77</Price> </invoice> <invoice> <CustomerID>HANAR</CustomerID> <CustomerName>Hanari Carnes</CustomerName> <Address>"Rua do Pao, 67"</Address> <City>Rio de Janeiro</City> <Country>Brazil</Country> <OrderDate>7/8/1996</OrderDate> <ProductName>Manjimup Dried Apples</ProductName> <Price>1261.4</Price> </invoice> <invoice> <CustomerID>HANAR</CustomerID> <CustomerName>Hanari Carnes</CustomerName> <Address>"Rua do Pao, 67"</Address> <City>Rio de Janeiro</City> <Country>Brazil</Country> <OrderDate>7/8/1996</OrderDate> <ProductName>Louisiana Fiery Hot Pepper Sauce</ProductName> <Price>214.2</Price> </invoice> <invoice> <CustomerID>VICTE</CustomerID> <CustomerName>Victuailles en stock</CustomerName> <Address>"2, rue du Commerce"</Address> <City>Lyon</City> <Country>France</Country> <OrderDate>7/8/1996</OrderDate> <ProductName>Gustaf's Knckebrd</ProductName> <Price>95.76</Price> </invoice> <invoice> <CustomerID>VICTE</CustomerID> <CustomerName>Victuailles en stock</CustomerName> <Address>"2, rue du Commerce"</Address> <City>Lyon</City> <Country>France</Country> <OrderDate>7/8/1996</OrderDate> <ProductName>Ravioli Angelo</ProductName> <Price>222.3</Price> </invoice> <invoice> <CustomerID>VICTE</CustomerID> <CustomerName>Victuailles en stock</CustomerName> <Address>"2, rue du Commerce"</Address> <City>Lyon</City> <Country>France</Country> <OrderDate>7/8/1996</OrderDate> <ProductName>Louisiana Fiery Hot Pepper Sauce</ProductName> <Price>336</Price> </invoice> <invoice> <CustomerID>SUPRD</CustomerID> <CustomerName>Suprmes dlices</CustomerName> <Address>"Boulevard Tirou, 255"</Address> <City>Charleroi</City> <Country>Belgium</Country> <OrderDate>7/9/1996</OrderDate> <ProductName>Sir Rodney's Marmalade</ProductName> <Price>2462.4</Price> </invoice> <invoice> <CustomerID>SUPRD</CustomerID> <CustomerName>Suprmes dlices</CustomerName> <Address>"Boulevard Tirou, 255"</Address> <City>Charleroi</City> <Country>Belgium</Country> <OrderDate>7/9/1996</OrderDate> <ProductName>Geitost</ProductName> <Price>47.5</Price> </invoice> <invoice> <CustomerID>SUPRD</CustomerID> <CustomerName>Suprmes dlices</CustomerName> <Address>"Boulevard Tirou, 255"</Address> <City>Charleroi</City> <Country>Belgium</Country> <OrderDate>7/9/1996</OrderDate> <ProductName>Camembert Pierrot</ProductName> <Price>1088</Price> </invoice> <invoice> <CustomerID>HANAR</CustomerID> <CustomerName>Hanari Carnes</CustomerName> <Address>"Rua do Pao, 67"</Address> <City>Rio de Janeiro</City> <Country>Brazil</Country> <OrderDate>7/10/1996</OrderDate> <ProductName>Gorgonzola Telino</ProductName> <Price>200</Price> </invoice> <invoice> <CustomerID>HANAR</CustomerID> <CustomerName>Hanari Carnes</CustomerName> <Address>"Rua do Pao, 67"</Address> <City>Rio de Janeiro</City> <Country>Brazil</Country> <OrderDate>7/10/1996</OrderDate> <ProductName>Chartreuse verte</ProductName> <Price>604.8</Price> </invoice> <invoice> <CustomerID>HANAR</CustomerID> <CustomerName>Hanari Carnes</CustomerName> <Address>"Rua do Pao, 67"</Address> <City>Rio de Janeiro</City> <Country>Brazil</Country> <OrderDate>7/10/1996</OrderDate> <ProductName>Maxilaku</ProductName> <Price>640</Price> </invoice> <invoice> <CustomerID>CHOPS</CustomerID> <CustomerName>Chop-suey Chinese</CustomerName> <Address>Hauptstr. 29</Address> <City>Bern</City> <Country>Switzerland</Country> <OrderDate>7/11/1996</OrderDate> <ProductName>Guaran Fantstica</ProductName> <Price>45.9</Price> </invoice> <invoice> <CustomerID>CHOPS</CustomerID> <CustomerName>Chop-suey Chinese</CustomerName> <Address>Hauptstr. 29</Address> <City>Bern</City> <Country>Switzerland</Country> <OrderDate>7/11/1996</OrderDate> <ProductName>Pt chinois</ProductName> <Price>342.72</Price> </invoice> <invoice> <CustomerID>CHOPS</CustomerID> <CustomerName>Chop-suey Chinese</CustomerName> <Address>Hauptstr. 29</Address> <City>Bern</City> <Country>Switzerland</Country> <OrderDate>7/11/1996</OrderDate> <ProductName>Longlife Tofu</ProductName> <Price>168</Price> </invoice> <invoice> <CustomerID>RICSU</CustomerID> <CustomerName>Richter Supermarkt</CustomerName> <Address>Grenzacherweg 237</Address> <City>Genve</City> <Country>Switzerland</Country> <OrderDate>7/12/1996</OrderDate> <ProductName>Chang</ProductName> <Price>304</Price> </invoice> <invoice> <CustomerID>RICSU</CustomerID> <CustomerName>Richter Supermarkt</CustomerName> <Address>Grenzacherweg 237</Address> <City>Genve</City> <Country>Switzerland</Country> <OrderDate>7/12/1996</OrderDate> <ProductName>Pavlova</ProductName> <Price>486.5</Price> </invoice> <invoice> <CustomerID>RICSU</CustomerID> <CustomerName>Richter Supermarkt</CustomerName> <Address>Grenzacherweg 237</Address> <City>Genve</City> <Country>Switzerland</Country> <OrderDate>7/12/1996</OrderDate> <ProductName>Inlagd Sill</ProductName> <Price>380</Price> </invoice> <invoice> <CustomerID>RICSU</CustomerID> <CustomerName>Richter Supermarkt</CustomerName> <Address>Grenzacherweg 237</Address> <City>Genve</City> <Country>Switzerland</Country> <OrderDate>7/12/1996</OrderDate> <ProductName>Raclette Courdavault</ProductName> <Price>1320</Price> </invoice> <invoice> <CustomerID>WELLI</CustomerID> <