DataView行过滤器空了吗？

Question

所以我有一个主论坛和一些儿童论坛。对于主窗体，我使用带有dataview行过滤器的搜索文本框。虽然问题是在我的子表单中我正在更新数据库记录，然后必须回到主表单并使用新记录更新DataGridView。

但是当我尝试时，即使我硬编码DataView过滤器，datagridview也不会向我显示更新的视图。

    public void RefreshDGV()
    {
        //Method thats being called from child form
        SQL_Data.table.Clear();
        this.dataGridView1.RowCount = 1;
        this.dataGridView1.Rows.Clear();
        this.Refresh();
        this.dataGridView1.Refresh();
        this.DataGridFill();
        AptSearchRefill();

    }
   //Function that needs to set up a new view to show new/updated records
 public void AptSearchRefill()
    {
        try
        {
            DataView dvrefresh = new DataView(SQL_Data.table);
            dvrefresh.RowFilter = string.Format("apt_num LIKE '%{0}%'", apt_search.Text); 
           //Problem lies here^ Even when apt_search.text is hardcoded, still nothing.
            dataGridView1.DataSource = dvrefresh;
        }
        catch (Exception ex)
        {
            WriteToLog.Write(ClassName, ex.ToString(), StoreUser.Username.ToString());
        }
    }