ListBox间滚动绑定

Code

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public class Sync
{
    private ListBox _LB1 = null;
    private ListBox _LB2 = null;

    private ListBoxScroll _ListBoxScroll1 = null;
    private ListBoxScroll _ListBoxScroll2 = null;

    public Sync(ListBox LB1, ListBox LB2)
    {
        if (LB1 != null && LB1.IsHandleCreated && LB2 != null && LB2.IsHandleCreated &&
            LB1.Items.Count == LB2.Items.Count && LB1.Height == LB2.Height)
        {
            this._LB1 = LB1;
            this._ListBoxScroll1 = new ListBoxScroll(LB1);
            this._ListBoxScroll1.Scroll += _ListBoxScroll1_VerticalScroll;


            this._LB2 = LB2;
            this._ListBoxScroll2 = new ListBoxScroll(LB2);
            this._ListBoxScroll2.Scroll += _ListBoxScroll2_VerticalScroll;


            this._LB1.SelectedIndexChanged += _LB1_SelectedIndexChanged;
            this._LB2.SelectedIndexChanged += _LB2_SelectedIndexChanged;
        }
    }


    private void _LB1_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (this._LB2.TopIndex != this._LB1.TopIndex)
        {
            this._LB2.TopIndex = this._LB1.TopIndex;
        }
    }


    private void _LB2_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (this._LB1.TopIndex != this._LB2.TopIndex)
        {
            this._LB1.TopIndex = this._LB2.TopIndex;
        }
    }


    private void _ListBoxScroll1_VerticalScroll(ListBox LB)
    {
        if (this._LB2.TopIndex != this._LB1.TopIndex)
        {
            this._LB2.TopIndex = this._LB1.TopIndex;
        }
    }


    private void _ListBoxScroll2_VerticalScroll(ListBox LB)
    {
        if (this._LB1.TopIndex != this._LB2.TopIndex)
        {
            this._LB1.TopIndex = this._LB2.TopIndex;
        }
    }


    private class ListBoxScroll : NativeWindow
    {
        private ListBox _LB = null;
        private const int WM_VSCROLL = 0x115;
        private const int WM_MOUSEWHEEL = 0x20a;


        public event dlgListBoxScroll Scroll;
        public delegate void dlgListBoxScroll(ListBox LB);


        public ListBoxScroll(ListBox LB)
        {
            this._LB = LB;
            this.AssignHandle(LB.Handle);
        }


        protected override void WndProc(ref Message m)
        {
            base.WndProc(ref m);
            switch (m.Msg)
            {
                case WM_VSCROLL:
                case WM_MOUSEWHEEL:
                    if (this.Scroll != null)
                    {
                        this.Scroll(_LB);
                    }
                    break;
            }
        }
    }
}

DLL

提取码：shsh
77zw)