save values of array in one string

Question

i have an array with 4 values:

string[] selectedObject;

how can i save all 4 values of array in string like:

string selectedObjects = "";

i need one string like this:

selectedObjects = "123; 132; 231; 132;";

Answer 1

string selectedObjects = string.Join("; ", selectedObject);

This will produce the output "123; 132; 231; 132" - If you really wanted another ; at the end you could add this manually to have all bases covered:

if (!string.IsNullOrEmpty(selectedObjects))
    selectedObjects = selectedObjects + ";";

This will produce the right output for any selectedObject array length, including zero.

Answer 2

String selectedObjects = selectedObject.Aggregate((aggregation, currentString) => aggregation + "; " + currentString);