[C#]如何使用TraceListener實作類似Visual Studio的輸出視窗

	/// <summary>
	/// Initializes a new instance of the <see cref="ListBoxLogTraceListener"/> class.
	/// </summary>
	/// <param name="listBox">The list box.</param>
	public ListBoxLogTraceListener(ListBox listBox)
	{
		m_ListBox = listBox;
	}

	/// <summary>
	/// Writes the output to the OutputDebugString function and to the <see cref="M:System.Diagnostics.Debugger.Log(System.Int32,System.String,System.String)"/> method, followed by a carriage return and line feed (

). /// </summary> /// <param name=“message”>The message to write to OutputDebugString and <see cref=“M:System.Diagnostics.Debugger.Log(System.Int32,System.String,System.String)”/>.</param> /// <PermissionSet> /// <IPermission class=“System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089” version=“1” Unrestricted=“true”/> /// <IPermission class=“System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089” version=“1” Flags=“ControlEvidence”/> /// </PermissionSet> public override void WriteLine(string message) { if (!m_ListBox.Visible) return;

		if (m_ListBox.InvokeRequired)
		{
			m_ListBox.BeginInvoke(new MethodInvoker(
				   delegate { WriteLine(message); }
				   ));
			return;
		}

		m_ListBox.Items.Add(string.Format("{0}	{1}", DateTime.Now, message));
	}
}</pre></div>

namespace WindowsFormsApplication6 { public partial class Form1 : Form { public Form1() { InitializeComponent(); //Debug.Listeners.Add(new ListBoxLogTraceListener(listBox1)); Trace.Listeners.Add(new ListBoxLogTraceListener(listBox1)); }

	private void button1_Click(object sender, EventArgs e)
	{
		Debug.WriteLine("Debug msg...");
	}

	private void button2_Click(object sender, EventArgs e)
	{
		Trace.WriteLine("Trace msg...");
	}
}

public class ListBoxLogTraceListener : DefaultTraceListener
{
	private ListBox m_ListBox { get; set; }

	/// &lt;summary&gt;
	/// Initializes a new instance of the &lt;see cref="ListBoxLogTraceListener"/&gt; class.
	/// &lt;/summary&gt;
	/// &lt;param name="listBox"&gt;The list box.&lt;/param&gt;
	public ListBoxLogTraceListener(ListBox listBox)
	{
		m_ListBox = listBox;
	}

	/// &lt;summary&gt;
	/// Writes the output to the OutputDebugString function and to the &lt;see cref="M:System.Diagnostics.Debugger.Log(System.Int32,System.String,System.String)"/&gt; method, followed by a carriage return and line feed (

). /// </summary> /// <param name=“message”>The message to write to OutputDebugString and <see cref=“M:System.Diagnostics.Debugger.Log(System.Int32,System.String,System.String)”/>.</param> /// <PermissionSet> /// <IPermission class=“System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089” version=“1” Unrestricted=“true”/> /// <IPermission class=“System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.3600.0, Culture=neutral, PublicKeyToken=b77a5c561934e089” version=“1” Flags=“ControlEvidence”/> /// </PermissionSet> public override void WriteLine(string message) { if (!m_ListBox.Visible) return;

		if (m_ListBox.InvokeRequired)
		{
			m_ListBox.BeginInvoke(new MethodInvoker(
				   delegate { WriteLine(message); }
				   ));
			return;
		}

		m_ListBox.Items.Add(string.Format("{0}	{1}", DateTime.Now, message));
	}
}

}