Display a single message with records when Id exists in C# Linq -
i have check record if exists display message id stating following id's exists. have written message in loop message repeated. if write console message outside loop scope ends.
current output :
cannot delete id 1 exists.
cannot delete id 2 exists.
required output :
cannot delete id 1,2 exists.
public class program { public int id { get; set; } static void main(string[] args) { list<program> client = new list<program>(); client.add(new program { id = 1 }); client.add(new program { id = 2 }); client.add(new program { id = 3 }); client.add(new program { id = 4 }); client.add(new program { id = 5 }); list<program> server = new list<program>(); server.add(new program { id = 2}); server.add(new program { id = 4 }); foreach (var c in client) { var r = server.any(x => x.id == c.id); if (r==true) { console.writeline(string.format("cannot delete {0} exists",c.id)); } } console.readline(); } }
use this
public class program { public int id { get; set; } static void main(string[] args) { list<program> client = new list<program>(); client.add(new program { id = 1 }); client.add(new program { id = 2 }); client.add(new program { id = 3 }); client.add(new program { id = 4 }); client.add(new program { id = 5 }); list<program> server = new list<program>(); server.add(new program { id = 2}); server.add(new program { id = 4 }); list<int> lst = new list<int>(); foreach (var c in client) { var r = server.any(x => x.id == c.id); if (r==true) { lst.add(c.id); } } if(lst.count() > 0) console.writeline(string.format("cannot delete {0} exists",string.join(",",lst))); console.readline(); } }
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