绑定Databind();

    private void GridViewShow()
    ...{
        SqlConnection con = DB.CreateConnetcon();
        string Strsql = "select * from NewsType";
        SqlDataAdapter sda = new SqlDataAdapter(Strsql, con);
        DataSet myds = new DataSet();
        con.Open();
        sda.Fill(myds, "Newstmp");
        DataView view = myds.Tables["Newstmp"].DefaultView;
        this.GridType.DataSource = view;
        this.GridType.DataKeyNames = new string[] ...{ "NewsTypeID" };
        this.GridType.DataBind();
        con.Close();
    }