Hi dharmendr,
I got the solution,
private void ScrollGrid()
{
int intScrollTo = this.gridView.SelectedIndex * (int)this.gridView.RowStyle.Height.Value;
string strScript = string.Empty;
strScript += "var gridView = document.getElementById('" + this.gridView.ClientID + "');\n";
strScript += "if (gridView != null && gridView.parentElement != null && gridView.parentElement.parentElement != null)\n";
strScript += " gridView.parentElement.parentElement.scrollTop = " + intScrollTo + ";\n";
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "ScrollGrid", strScript, true);
}