How to set the show duration and show delay duration for tooltip in WPF DataGrid (SfDataGrid)?

ToolTip toolTip = new ToolTip();
 
toolTip.PlacementTarget = datagrid;
// ToolTip assigned for datagrid
datagrid.ToolTip = toolTip;           
toolTip.Content = "sync";
 
ToolTipService.SetShowDuration(datagrid, 7000);
// Initial TimeDelay
ToolTipService.SetInitialShowDelay(datagrid, 20000000);
// Set Position for ToolTip
ToolTipService.SetPlacement(datagrid, System.Windows.Controls.Primitives.PlacementMode.Mouse); 
 

this.datagrid.MouseMove += datagrid_MouseMove;
int previourerecordindex = -1;
int previouscolindex = -1;
Point previouspoint;
DispatcherTimer timer = new DispatcherTimer() { Interval = new TimeSpan(20000000) };
DispatcherTimer closetimer = new DispatcherTimer() { Interval = new TimeSpan(0, 0, 3) };
ToolTip toolTip = new ToolTip();       
EventHandler handler;
EventHandler closetimerhandler;
 
void datagrid_MouseMove(object sender, MouseEventArgs e)
{
    VisualContainer visualcontainer = (VisualContainer)datagrid.GetPropertyValue("VisualContainer");
    var point = e.GetPosition(visualcontainer);
    var rowcolumnindex = visualcontainer.PointToCellRowColumnIndex(point);
    var rowindex = rowcolumnindex.RowIndex;
    var columnindex = rowcolumnindex.ColumnIndex;
    // Get the resolved current record index
    int recordIndex = this.datagrid.ResolveToRecordIndex(rowindex);
    if (recordIndex < 0 || columnindex < 0)
    {
       timer.Stop();
       closetimer.Stop();
       toolTip.IsOpen = false;
       return;
    }
    if (recordIndex == previourerecordindex && columnindex == previouscolindex)
       return;
    timer.Stop();
    closetimer.Stop();
    toolTip.IsOpen = false;
 
    previourerecordindex = recordIndex;
    previouscolindex = columnindex;
    previouspoint = point;
 
    if (handler == null)
    {
       handler = (s, arg) =>
       {
           timer.Stop();
           // Get the current row record
           var mappingName = this.datagrid.Columns[previouscolindex].MappingName;
           var record1 = this.datagrid.View.Records.GetItemAt(previourerecordindex);
           if (record1 != null)
           {
               var cellvalue = record1.GetType().GetProperty(mappingName).GetValue(record1).ToString();
               toolTip.Content = cellvalue;
               toolTip.IsOpen = true;
           }
           closetimer.Start();
       };
    }
    timer.Tick -= handler;
    timer.Tick += handler;
 
    if (closetimerhandler == null)
    {
       closetimerhandler = (s, arg) =>
       {
          closetimer.Stop();
          if (toolTip.IsOpen)
             toolTip.IsOpen = false;
       };
    }
    closetimer.Tick -= closetimerhandler;
    closetimer.Tick += closetimerhandler;
    timer.Start();
}