how to reload the same web part after insert

I used !IsPostBack in Page_Load function.

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        { }}

In my Page_Load function have lot of controls like textboxes and dropdown lists.

I need to reload the same web part(sharepoint 2010) after insert to the list. I used below code to reload page at the end of my submit button, but not working fyn (ie, Page_Load function is not working).

Response.Redirect(Request.RawUrl);