C#

<br />
class myClass{<br />
   AuxForm myAuxForm;<br />
<br />
// Load Data:<br />
   downloadData()<br />
   {<br />
    myAuxForm = new AuxForm (this); // launch new form<br />
    myAuxForm .Show();<br />
    doDataLoad();<br />
   }<br />
<br />
.<br />
.<br />
.<br />
}<br />

<br />
System.ObjectDisposedException was unhandled<br />
  Message="Cannot access a disposed object.\r\nObject name: 'TextBox'."<br />
  Source="System.Windows.Forms"<br />
  ObjectName="TextBox"<br />

<br />
partial class PriceUpdateForm : Form<br />
    {<br />
        // Thread delegates:<br />
        delegate void OutputDisplayCallback(string s, TextBox txtbxOutputTmp);<br />
        StockListManager m_slm;<br />
<br />
        public PriceUpdateForm(StockListManager slm)<br />
        {<br />
            InitializeComponent();<br />
            m_slm = slm;<br />
            m_slm.m_DisplayOutputEvt += new StockListManager.m_DisplayOutEH(DisplayOutputFromThread); // Attach delegate to StocklistManager<br />
        }<br />
<br />
        void DisplayOutputFromThread(string s)<br />
        {<br />
            DisplayOutput(s, txtbxOutput);<br />
        }<br />
<br />
<br />
        private void DisplayOutput(string s, TextBox txtbxOutputTmp)<br />
        {<br />
<br />
            if (txtbxOutputTmp.InvokeRequired) //Check if on different thread (it wont work otherwise!)<br />
            {<br />
                OutputDisplayCallback d = new OutputDisplayCallback(DisplayOutput);<br />
                this.Invoke(d, new object[] { s, txtbxOutputTmp });<br />
            }<br />
            else<br />
            {<br />
                txtbxOutputTmp.AppendText(s + "\n");<br />
                if ((s == "Price data update complete.") && (chbxCloseWhenDone.Checked))<br />
                    this.Hide();<br />
            }           <br />
        }<br />
        <br />
       <br />
    }<br />