Access the data of columns drag drop gridview rows with jquery in ASP.NET

$(function () {
    var sourceCount = $("#gvSource").find('tr:not(tr:first-child)').length;
    var destCount = $("#gvDest").find('tr:not(tr:first-child)').length - 1;
    $(".drag_drop_grid").sortable({
        items: 'tr:not(tr:first-child)',
        cursor: 'crosshair',
        connectWith: '.drag_drop_grid',
        axis: 'y',
        dropOnEmpty: true,
        receive: function (e, ui) {
            if (e.target.id == 'gvDest') {
                destCount++;
                sourceCount--;
                $('#hfSourceRowsCount').val(sourceCount);
                $('#hfDestRowsCount').val(destCount);
            }
            else if (e.target.id == 'gvSource') {
                destCount--;
                sourceCount++;
                $('#hfSourceRowsCount').val(sourceCount);
                $('#hfDestRowsCount').val(destCount);
            }
            $(this).find("tbody").append(ui.item);
        }
    });
    $("[id*=gvDest] tr:not(tr:first-child)").remove();
});

protected void Page_Load(object sender, EventArgs e)
{
    if (!Page.IsPostBack)
    {
        System.Data.DataTable dt = new System.Data.DataTable();
        dt.Columns.AddRange(new System.Data.DataColumn[2] { new System.Data.DataColumn("Item"), new System.Data.DataColumn("Price") });
        dt.Rows.Add("Shirt", 450);
        dt.Rows.Add("Jeans", 3200);
        dt.Rows.Add("Trousers", 1900);
        dt.Rows.Add("Tie", 185);
        dt.Rows.Add("Cap", 100);
        dt.Rows.Add("Hat", 120);
        dt.Rows.Add("Scarf", 290);
        dt.Rows.Add("Belt", 150);
        gvSource.UseAccessibleHeader = true;
        gvSource.DataSource = dt;
        gvSource.DataBind();
  
        dt.Rows.Clear();
        dt.Rows.Add();
        gvDest.DataSource = dt;
        gvDest.DataBind();
    }
}
  
protected void Count(object sender, EventArgs e)
{
    int rowsgvSource = Convert.ToInt32(hfSourceRowsCount.Value);
    int rowsgvDest = Convert.ToInt32(hfDestRowsCount.Value);
    ClientScript.RegisterClientScriptBlock(this.GetType(), "", "alert('Source Count: " + rowsgvSource + "'); alert('Destination Count: " + rowsgvDest + "');", true);
}