C#

public ActionResult GetFile()
{
    var theStream = new Memorystream();
    // create your file and add to memorystream or open a filestream instead.
    return new FileStreamResult(theStream, string appropriateContentType);
}

Bernhard Hiller wrote:

its use on a form may look like "run-time" instead of "design-time"

// activex control properties
this.ControlPlayer.Dock = System.Windows.Forms.DockStyle.Fill;
this.ControlPlayer.Enabled = true;
this.ControlPlayer.Location = new System.Drawing.Point(0, 0);
this.ControlPlayer.Name = "ControlPlayer";
this.ControlPlayer.OcxState = ((System.Windows.Forms.AxHost.State(resources.GetObject("ControlPlayer.OcxState")));
this.ControlPlayer.Size = new System.Drawing.Size(409, 317);
this.ControlPlayer.TabIndex = 2;

// Player Main Form
((System.ComponentModel.ISupportInitialize)(this.ControlPlayer)).EndInit();

class _Key
	{
		public string s;
		public Type t;

		public override int GetHashCode()
		{
			return s.GetHashCode() ^ t.GetHashCode();
		}

		public override bool Equals(object obj)
		{
			_Key o = obj as _Key;

			if (o == null)
				return false;

			if (s == o.s && t == o.t)
				return true;

			return false;
		}
	}

for (int i = 0; i < 1000000; i++)
{
// 10ms - int x string
string s;
dict.TryGetValue(5, out s);
}

sealed class _Key : IEquatable<Key>
{
    private readonly string _s;
    private readonly Type _t;
    private readonly int _hashCode;

    public _Key(string s, Type t)
    {
        if (s == null) throw new ArgumentNullException("s");
        if (t == null) throw new ArgumentNullException("t");

        _s = s;
        _t = t;

        unchecked
        {
            _hashCode = (s.GetHashCode() * 397) ^ t.GetHashCode();
        }
    }

    public string S
    {
        get { return _s; }
    }

    public Type T
    {
        get { return _t; }
    }

    public override int GetHashCode()
    {
        return _hashCode;
    }

    public override bool Equals(object obj)
    {
        return Equals(obj as _Key);
    }

    public bool Equals(_Key other)
    {
        if (ReferenceEquals(other, null)) return false;
        return _s == other._s && _t == other._t;
    }

    public static bool operator ==(_Key left, _Key right)
    {
        return Equals(left, right);
    }

    public static bool operator !=(_Key left, _Key right)
    {
        return !Equals(left, right);
    }
}

krishnapnv wrote:

Im just wondering to know how to get the similar functionality

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]