How to create a excel file in C# without visitable to Excel window

[.net beginner]

I am using the following code to open a Excel
window but I don't know how to open a sheet and
set value on it and close it.

Thanks in advance.

//Variable
Type excel;
object[] parameter= new object[1];
object excelObject;
try
{
//Get the excel object
excel = Type.GetTypeFromProgID("Excel.Application");
//Create instance of excel
excelObject = Activator.CreateInstance(excel);
//Set the parameter whic u want to set
parameter[0] = true;
//Set the Visible property
excel.InvokeMember("Visible", BindingFlags.SetProperty, null, excelObject, parameter);
}
catch(Exception e)
{
Console.WriteLine("Error Stack {0} ", e.Message) ;
}
finally
{
//When this object is destroyed the Excel application will be closed
//So Sleep for sometime and see the excel application
Thread.Sleep(5000);
//Relaese the object
//GC.RunFinalizers()
}