GetChannelList in c#

[pär]

Can anyone provide me with a short code snippet(pref in c#) that shows available channels?

 

I have rather limited experience developing in c#, and now i'm stuck.

 

I've tried following to get a channel list:

object obj;
DVBViewer.ChannelManager.GetChannelList(out obj);
Console.WriteLine(obj.ToString());

 

The list seems empty. DVBViewer is running and everything seems fine.

Edited January 7, 2008 by pär

[olixelle]

did u connect to DVBViewer before ?

[pär]

did u connect to DVBViewer before ?

 

yes, using:

DVBViewer = (DVBViewer)System.Runtime.InteropServices.Marshal.GetActiveObject("DVBViewerServer.DVBViewer");

 

and DVBViewer is running.

 

Apparently, DVBViewer.ChannelManager has a property named "Item"(according to the docs). But my instance of DVBViewer won't recognize this property. It does, however, find the property "Count".

[olixelle]

first i'm not sure that u should use out argument for the parameter (out implies that parameter already contains a value i think)

second, chanlist is a 2 dimension array so the tostring method may not work: did u try to browse the object

[pär]

first i'm not sure that u should use out argument for the parameter (out implies that parameter already contains a value i think)

second, chanlist is a 2 dimension array so the tostring method may not work: did u try to browse the object

 

 

Oh.

Well, how do i browse it?

Thanks for your help.

[diposo]

I used the following to get the channel list:

 

 

IDVBViewer dvbServer = (IDVBViewer)Marshal.GetActiveObject("DVBViewerServer.DVBViewer");

 

IChannelCollection chnCol = dvbServer.ChannelManager;

 

for (int k = 0; k < chnCol.Count; k++)

{

System.Console.WriteLine(chnCol[k].Name);

}

[Springveldt]

			IDVBViewer m_DvbViewer = null;

		try
		{
			// Try and get the running instance, a COMException is thrown if the class name is not known
			m_DvbViewer = (IDVBViewer)Marshal.GetActiveObject("DVBViewerServer.DVBViewer");
		}
		catch (COMException)
		{
			if (MessageBox.Show("DVBViewer is currently not running.\r\nDo you wish to start it?", "Start DVBViewer", MessageBoxButtons.YesNo) == DialogResult.Yes)
			{
				// DVBViewer isn't running, so start it
				m_DvbViewer = new DVBViewer();
			}
		}
		finally
		{
			if (m_DvbViewer != null)
			{
				object[,] oDvbChannelArray = null;
				object oDvbChannelList = new object();
				m_DvbViewer.ChannelManager.GetChannelList(out oDvbChannelList);
				oDvbChannelArray = (object[,])oDvbChannelList;
			}
		}

You could declare the size of the channel array saving the cast if you wanted to.