public static object QueryValueHtmlDoc(IHTMLDocument2 htmlDoc, HtmlCommand command)
{
try
{
if (htmlDoc.IsNull())
{
return(null);
}
// ensure command is valid and enabled
if (!htmlDoc.queryCommandSupported(command.Name()))
{
return(null);
}
if (!htmlDoc.queryCommandEnabled(command.Name()))
{
return(null);
}
return(htmlDoc.queryCommandValue(command.Name()));
}
catch (RemotingException) { }
catch (UnauthorizedAccessException) { }
return(null);
}
public static void ExecuteCommandHtmlDoc(IHTMLDocument2 htmlDoc, HtmlCommand command, object data)
{
try
{
if (htmlDoc.IsNull())
{
return;
}
// ensure command is valid and enabled
if (!htmlDoc.queryCommandSupported(command.Name()))
{
return;
}
if (!htmlDoc.queryCommandEnabled(command.Name()))
{
return;
}
htmlDoc.execCommand(command.Name(), false, data);
}
catch (RemotingException) { }
catch (UnauthorizedAccessException) { }
}
public bool IsCommandSupported(string name)
{
IHTMLDocument2 doc = (IHTMLDocument2)Browser.Document;
if (doc == null)
{
return(false);
}
return(doc.queryCommandSupported(name));
}
public bool queryCommandSupported(string cmdID)
{
return(_innerDoc2.queryCommandSupported(cmdID));
}
