[問題] tabcontrol and binding source

[amidofun ()]

我有一個tabcontrol

有兩個tabpage

按照這篇作法 儲存表單的資料

http://www.dotblogs.com.tw/yc421206/archive/2011/07/08/31290.aspx

tabpage1有一個config1.xml

tabpage2有一個config2.xml

我在formload的時候依序執行兩個function

function1()是負責讀取config1.xml for tabpage1，內容為:

    BindingList<Config> configs = null;
    if (File.Exists("Configs1.xml"))
    {
        configs = XmlSerialize.DeserializeFromXml<BindingList<Config>>("Configs.xml");
    }
    else
    {
        configs = new BindingList<Config>();
        configs.Add(new Config() { ProductName = "Test", Axis = "A", Acceleration = 1000, Deceleration = 1000, Speed = 1000, Position = 1000 });
    }
    this._Source.DataSource = configs;
    this.bindingNavigator1.BindingSource = this._Source;
    this.dataGridView1.DataSource = this._Source;

    this.comboBox1.DataSource = this._Source;
    this.comboBox1.DisplayMember = "ProductName";

    this.txtDeceleration.DataBindings.Add("Text", this._Source, "Deceleration");
    this.txtPosition.DataBindings.Add("Text", this._Source, "Position");
    this.txtAxis.DataBindings.Add("Text", this._Source, "Axis");
    this.txtAcceleration.DataBindings.Add("Text", this._Source, "Acceleration");
    this.txtSpeed.DataBindings.Add("Text", this._Source, "Speed");

同樣的function2()是負責讀取config2.xml for tabpage2

但是fuction2裡面的textbox的text卻沒有assign到東西   是空的
fuction1卻沒問題  請問為什麼會發生這樣的事??

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