structure array passing

Create a new project, calling it, say, DataStructures. Then declare, within the DataStructures namespace, the following two classes.

// TestStruct.cs

namespace DataStructures
    {

    // ********************************************** class TestStruct

    public class TestStruct
        {

        public struct Test_Struct
            {
            public string name;
            public int code;
            };

         } // class TestStruct

     } // namespace DataStructures

and

// TestArray.cs 

namespace DataStructures
    {
    
    // *********************************************** class TestArray
    
    public class TestArray
        {
        
        public static TestStruct.Test_Struct [ ] test_structs = 
                                  new TestStruct.Test_Struct [ 200 ];

        } // class TestArray

     } // namespace DataStructures

Now in the two forms, use DataStructures as follows. Note that the example is Form1; Form2 code is the same.

// Form1.cs

using System.Windows.Forms;

namespace ArrayOfStructs
    {
    
    // *************************************************** class Form1
    
    public partial class Form1 : Form
        {
        
        // ***************************************************** Form1
        
        public Form1 ( )
            {
            
            InitializeComponent ( );
            
            for ( int i = 0; 
                 ( i < DataStructures.TestArray.test_structs.Length );
                 i++ )
                {
                
                }
            }

        } // class Form1

    } // namespace ArrayOfStructs

Hope that helps.