public override object EditValue(ITypeDescriptorContext context, IServiceProvider provider, object value)
{
if (context != null && provider != null && context.Instance != null && context.PropertyDescriptor != null)
{
IWindowsFormsEditorService service = (IWindowsFormsEditorService)provider.GetService(typeof(IWindowsFormsEditorService));
if (service != null)
{
Capturer cap = context.Instance as Capturer;
if (cap != null)
{
ListBox list = new ListBox();
IList <string> l = null;
if (string.CompareOrdinal(context.PropertyDescriptor.Name, "VideoDeviceName") == 0)
{
l = cap.VideoDeviceList;
}
else if (string.CompareOrdinal(context.PropertyDescriptor.Name, "AudioDeviceName") == 0)
{
l = cap.AudioDeviceList;
}
else if (string.CompareOrdinal(context.PropertyDescriptor.Name, "VideoCompressor") == 0)
{
IList <Filter> fs = cap.VideoCompressorList;
if (fs != null && fs.Count > 0)
{
List <string> lst = new List <string>();
foreach (Filter f in fs)
{
lst.Add(f.Name);
}
l = lst;
}
}
else if (string.CompareOrdinal(context.PropertyDescriptor.Name, "AudioCompressor") == 0)
{
IList <Filter> fs = cap.AudioCompressorList;
if (fs != null && fs.Count > 0)
{
List <string> lst = new List <string>();
foreach (Filter f in fs)
{
lst.Add(f.Name);
}
l = lst;
}
}
else if (string.CompareOrdinal(context.PropertyDescriptor.Name, "VideoSourceName") == 0)
{
IList <Source> fs = cap.VideoSourceList;
if (fs != null && fs.Count > 0)
{
List <string> lst = new List <string>();
foreach (Source f in fs)
{
lst.Add(f.Name);
}
l = lst;
}
}
else if (string.CompareOrdinal(context.PropertyDescriptor.Name, "AudioSourceName") == 0)
{
IList <Source> fs = cap.AudioSourceList;
if (fs != null && fs.Count > 0)
{
List <string> lst = new List <string>();
foreach (Source f in fs)
{
lst.Add(f.Name);
}
l = lst;
}
}
if (l != null)
{
string sv = string.Empty;
if (value != null)
{
sv = value.ToString();
}
foreach (string s in l)
{
int n = list.Items.Add(s);
if (list.SelectedIndex < 0)
{
if (string.CompareOrdinal(s, sv) == 0)
{
list.SelectedIndex = n;
}
}
}
}
if (list.Items.Count > 0)
{
list.Tag = service;
list.Click += new EventHandler(list_Click);
list.KeyPress += new KeyPressEventHandler(list_KeyPress);
service.DropDownControl(list);
if (list.SelectedIndex >= 0)
{
value = list.Text;
}
}
}
}
}
return(value);
}
public void LoadData(Capturer obj)
{
propertyGrid1.SelectedObject = obj;
}