c# - LINQ : Dynamic select -

consider have class :

    public  class data {     public string field1 { get; set; }     public string field2 { get; set; }     public string field3 { get; set; }     public string field4 { get; set; }     public string field5 { get; set; }  } 

how dynamically select specify columns ? :

  var list = new list<data>();    var result= list.select("field1,field2"); // how ? 

is solution => dynamic linq ?
selected fields not known @ compile time. specified @ runtime

you can dynamically creating lambda pass select:

func<data,data> createnewstatement( string fields ) {     // input parameter "o"     var xparameter = expression.parameter( typeof( data ), "o" );      // new statement "new data()"     var xnew = expression.new( typeof( data ) );      // create initializers     var bindings = fields.split( ',' ).select( o => o.trim() )         .select( o => {              // property "field1"             var mi = typeof( data ).getproperty( o );              // original value "o.field1"             var xoriginal = expression.property( xparameter, mi );              // set value "field1 = o.field1"             return expression.bind( mi, xoriginal );         }     );      // initialization "new data { field1 = o.field1, field2 = o.field2 }"     var xinit = expression.memberinit( xnew, bindings );      // expression "o => new data { field1 = o.field1, field2 = o.field2 }"     var lambda = expression.lambda<func<data,data>>( xinit, xparameter );      // compile func<data, data>     return lambda.compile(); } 

then can use this:

var result = list.select( createnewstatement( "field1, field2" ) );