First BindingNavigator记录数据未加载

Question

在我的初始加载时，我的第一条记录没有将数据从table2加载到我的表单（DataBinded TextBoxes）。如果我导航到第二个并返回到第一个加载。有什么想法吗？

 public partial class myForm : Form
 {
    public int bindingPosition {get; set;}
    private void myForm_Load(object sender, EventArgs e)
    {
       this.tableAdapter1.Fill(this.myDataSet.Table1);
       this.tableAdapter2.Fill(this.myDataSet.Table2);
    }
    if (bindingPosition >=0)
    {
       //Navigates to specific record if bindingPosition variable is set
       //set by passing Convert.ToInt32(BindingNavigator.PositionItem.Text) from another form
       myBindingSource.Position = (bindingPosition -1);
    }
    myBindingNavigator_RefreshItems(sender,e);
 }