CAML query for Group by count and data

CAML query for Group by count and data

Company	Category	Product Name
Microsoft	Developer	Visual Studio
Microsoft	Consumer	Windows
Microsoft	Enterprise	SharePoint 2010
Microsoft	Mobile	Windows 7
Samsung	Consumer	Laptops
Samsung	Consumer	Mobiles
Samsung	Consumer	Tablet
Google	Consumer	Search Engine
Google	Consumer	Google Maps

The above is my SharePoint List, I want to group by company’s name and then count the number of rows for each grouped by data and also display only chunk of data that is grouped.

Company – Microsoft – 4 count

Microsoft	Developer	Visual Studio
Microsoft	Consumer	Windows
Microsoft	Enterprise	SharePoint 2010
Microsoft	Mobile	Windows 7

Company – Samsung – 3 count

Samsung	Consumer	Laptops
Samsung	Consumer	Mobiles
Samsung	Consumer	Tablet

Company – Google – 2 count

Google	Consumer	Search Engine
Google	Consumer	Google Maps

My  Solution – using CAML query LINQ

using (SPSite site = new SPSite(“http://server“))
 
{
 
SPWeb web = site.OpenWeb();
 
SPList listCAMLQuery = web.Lists["listName"];
 
SPQuery query = new SPQuery(); // query for all the items
 
DataTable dt = listCAMLQuery.GetItems(query).GetDataTable(); // get datatable for all the list items
 
if (dt != null && dt.Rows.Count > )
 
{
 
//Group the data
 
var groupedList = from row in dt.AsEnumerable()
 
group row by row.Field<string>(“Company”) into groupedTable
 
// Company is the column name for groupby
 
// string is the type of column
 
orderby groupedTable.Key // key is the groupby column category value
 
select new
 
{
 
Key = groupedTable.Key, // key is the groupby column category value
 
companyCount = groupedTable.Count(), // count for columns in a groupby
 
groupedRows = groupedTable.CopyToDataTable() // grouped data
 
};
 
// print result
 
foreach (var items in groupedList)
 
{
 
int count = items.companyCount; // count for columns in a groupby category
 
DataTable dt1 = items.groupedRows;
 
gv.DataSource = dt1; //gridview
 
gv.DataBind();
 
}
 
}
 
}
 
}