/// <summary>
/// Shows an event in the control.
/// </summary>
private void ShowValue(ref int index, ref bool overwrite, EventFieldList value, int fieldIndex)
{
// ignore children that are not elements.
object field = value.EventFields[fieldIndex].Value;
if (field == null)
{
return;
}
// get the name of the element.
string name = null;
if (m_monitoredItem != null)
{
name = m_monitoredItem.GetFieldName(fieldIndex);
}
// get the type name.
string type = value.GetType().Name;
// update the list view.
UpdateList(
ref index,
ref overwrite,
value,
field,
fieldIndex,
name,
type);
}
/// <summary>
/// Shows an event in the control.
/// </summary>
private void ShowValue(ref int index, ref bool overwrite, EventFieldList value, int fieldIndex)
{
// ignore children that are not elements.
object field = value.EventFields[fieldIndex].Value;
if (field == null)
{
return;
}
// get the name of the element.
string name = null;
if (m_monitoredItem != null)
{
name = m_monitoredItem.GetFieldName(fieldIndex);
}
// get the type name.
string type = value.GetType().Name;
// update the list view.
UpdateList(
ref index,
ref overwrite,
value,
field,
fieldIndex,
name,
type);
}
/// <summary>
/// Formats a value for display in the control.
/// </summary>
private string GetValueText(object value)
{
// check for null.
if (value == null)
{
return("(null)");
}
// format bytes.
byte[] bytes = value as byte[];
if (bytes != null)
{
StringBuilder buffer = new StringBuilder();
for (int ii = 0; ii < bytes.Length; ii++)
{
if (ii != 0 && ii % 16 == 0)
{
buffer.Append(" ");
}
buffer.AppendFormat("{0:X2} ", bytes[ii]);
}
return(buffer.ToString());
}
// format xml element.
XmlElement xml = value as XmlElement;
if (xml != null)
{
// return the entire element if not expandable.
if (!IsExpandableType(xml))
{
return(xml.OuterXml);
}
// show only the start tag.
string text = xml.OuterXml;
int index = text.IndexOf('>');
if (index != -1)
{
text = text.Substring(0, index);
}
return(text);
}
// format array.
Array array = value as Array;
if (array != null)
{
return(Utils.Format("{1}[{0}]", array.Length, value.GetType().GetElementType().Name));
}
// format list.
IList list = value as IList;
if (list != null)
{
string type = value.GetType().Name;
if (type.EndsWith("Collection"))
{
type = type.Substring(0, type.Length - "Collection".Length);
}
else
{
type = "Object";
}
return(Utils.Format("{1}[{0}]", list.Count, type));
}
// format encodeable object.
IEncodeable encodeable = value as IEncodeable;
if (encodeable != null)
{
return(encodeable.GetType().Name);
}
// format extension object.
ExtensionObject extension = value as ExtensionObject;
if (extension != null)
{
return(GetValueText(extension.Body));
}
// check for event value.
EventFieldList eventFields = value as EventFieldList;
if (eventFields != null)
{
if (m_monitoredItem != null)
{
return(String.Format("{0}", m_monitoredItem.GetEventType(eventFields)));
}
return(eventFields.GetType().Name);
}
// check for data value.
DataValue dataValue = value as DataValue;
if (dataValue != null)
{
if (StatusCode.IsBad(dataValue.StatusCode))
{
return(String.Format("{0}", dataValue.StatusCode));
}
return(String.Format("{0}", dataValue.Value));
}
// use default formatting.
return(Utils.Format("{0}", value));
}
/// <summary>
/// Formats a value for display in the control.
/// </summary>
private string GetValueText(object value)
{
// check for null.
if (value == null)
{
return("(null)");
}
// format bytes.
byte[] bytes = value as byte[];
if (bytes != null)
{
StringBuilder buffer = new StringBuilder();
for (int ii = 0; ii < bytes.Length; ii++)
{
if (ii != 0 && ii % 16 == 0)
{
buffer.Append(" ");
}
buffer.AppendFormat("{0:X2} ", bytes[ii]);
}
return(buffer.ToString());
}
// format xml element.
XmlElement xml = value as XmlElement;
if (xml != null)
{
// return the entire element if not expandable.
if (!IsExpandableType(xml))
{
return(xml.OuterXml);
}
// show only the start tag.
string text = xml.OuterXml;
int index = text.IndexOf('>');
if (index != -1)
{
text = text.Substring(0, index);
}
return(text);
}
// format array.
Array array = value as Array;
if (array != null)
{
if (array.Rank > 1)
{
int[] lenghts = new int[array.Rank];
for (int i = 0; i < array.Rank; ++i)
{
lenghts[i] = array.GetLength(i);
}
return(Utils.Format("{1}[{0}]", string.Join(",", lenghts), value.GetType().GetElementType().Name));
}
else
{
return(Utils.Format("{1}[{0}]", array.Length, value.GetType().GetElementType().Name));
}
}
// format list.
IList list = value as IList;
if (list != null)
{
string type = value.GetType().Name;
if (type.EndsWith("Collection"))
{
type = type.Substring(0, type.Length - "Collection".Length);
}
else
{
type = "Object";
}
return(Utils.Format("{1}[{0}]", list.Count, type));
}
// format encodeable object.
IEncodeable encodeable = value as IEncodeable;
if (encodeable != null)
{
return(encodeable.GetType().Name);
}
// format extension object.
ExtensionObject extension = value as ExtensionObject;
if (extension != null)
{
return(GetValueText(extension.Body));
}
// check for event value.
EventFieldList eventFields = value as EventFieldList;
if (eventFields != null)
{
if (m_monitoredItem != null)
{
return(String.Format("{0}", m_monitoredItem.GetEventType(eventFields)));
}
return(eventFields.GetType().Name);
}
// check for data value.
DataValue dataValue = value as DataValue;
if (dataValue != null)
{
StringBuilder formattedValue = new StringBuilder();
if (!StatusCode.IsGood(dataValue.StatusCode))
{
formattedValue.Append("[");
formattedValue.AppendFormat("Q:{0}", dataValue.StatusCode);
}
DateTime now = DateTime.UtcNow;
if ((dataValue != null) &&
((dataValue.ServerTimestamp > now) || (dataValue.SourceTimestamp > now)))
{
if (formattedValue.ToString().Length > 0)
{
formattedValue.Append(", ");
}
else
{
formattedValue.Append("[");
}
formattedValue.Append("T:future");
}
if (formattedValue.ToString().Length > 0)
{
formattedValue.Append("] ");
}
formattedValue.AppendFormat("{0}", dataValue.Value);
return(formattedValue.ToString());
}
// use default formatting.
return(Utils.Format("{0}", value));
}