internal void EnsureSystemWebSectionIsPresent()
{
if (!IsSystemWebSectionPresent())
{
Debug.Assert(Document != null);
XmlNode configSection = Document.SelectSingleNode("configuration");
if (configSection == null)
{
throw new Exception(SR.GetString(SR.WebConfig_FileLoadException));
}
if (configSection.SelectSingleNode("system.web") == null)
{
XmlElement newWebSection = Document.CreateElement("system.web");
configSection.AppendChild(newWebSection);
}
XmlNode webSection = Document.SelectSingleNode("configuration/system.web");
if (webSection.SelectSingleNode("deviceFilters") == null)
{
XmlElement newFilters = Document.CreateElement("deviceFilters");
webSection.AppendChild(newFilters);
}
}
}
// Cause the DeviceFilterNode to display correctly when inserted
// in a combo box.
public override String ToString()
{
if (Name == null || Name.Length == 0)
{
return(SR.GetString(SR.DeviceFilter_DefaultChoice));
}
return(Name);
}
internal DeviceFilterNode(WebConfigManager webConfig) : base()
{
_webConfig = webConfig;
_xmlNode = webConfig.Document.CreateElement("filter");
Name = SR.GetString(SR.DeviceFilterNode_DefaultFilterName);
Mode = DeviceFilterMode.Compare;
}
internal void EnsureWebConfigIsPresent()
{
if (!File.Exists(_path))
{
// We throw our own exception type so we can easily tell
// between a corrupt web.config and a missing one.
throw new FileNotFoundException(
SR.GetString(SR.WebConfig_FileNotFoundException)
);
}
}
private void LoadDocument()
{
try
{
Document.Load(_path);
}
catch (Exception ex)
{
Debug.Fail(ex.ToString());
throw new Exception(SR.GetString(SR.WebConfig_FileLoadException));
}
}
internal XmlElement FindFilterSection(XmlDocument document, bool createIfNotExists)
{
XmlNode configSection = FindXmlNode(document, "configuration");
if (configSection == null)
{
if (createIfNotExists)
{
throw new Exception(SR.GetString(SR.WebConfig_FileLoadException));
}
return(null);
}
XmlElement webSection = FindXmlNode(configSection, "system.web");
if (webSection == null)
{
if (createIfNotExists)
{
webSection = Document.CreateElement("system.web");
configSection.AppendChild(webSection);
}
return(null);
}
XmlElement filters = FindXmlNode(webSection, "deviceFilters");
if (filters == null)
{
if (createIfNotExists)
{
filters = Document.CreateElement("deviceFilters");
webSection.AppendChild(filters);
}
return(null);
}
return(filters);
}
internal ArrayList ReadDeviceFilters()
{
EnsureWebConfigIsPresent();
// Reload the document everytime we read filters
LoadDocument();
XmlNode filters = FindFilterSection(Document, false);
ArrayList DeviceFilterList = new ArrayList();
if (filters != null)
{
Hashtable filterTable = new Hashtable();
foreach (XmlNode childNode in filters.ChildNodes)
{
if (childNode.Name != null && childNode.Name.Equals("filter"))
{
// Ignore the empty filter.
if (childNode.Attributes["name"] == null ||
childNode.Attributes["name"].Value == null ||
childNode.Attributes["name"].Value.Length == 0)
{
continue;
}
String filterName = childNode.Attributes["name"].Value;
if (filterTable[filterName] != null)
{
throw new Exception(SR.GetString(SR.DeviceFilterEditorDialog_DuplicateNames));
}
DeviceFilterNode node = new DeviceFilterNode(this, childNode);
DeviceFilterList.Add(node);
filterTable[filterName] = true;
}
}
}
return(DeviceFilterList);
}