public static Session Session(this xlApp app)
{
Requires.NotNull(app, nameof(app));
using (var process = app.AsProcess()) {
return(new Session(process.SessionId));
}
}
public static void Activate(this xlApp app)
{
Requires.NotNull(app, nameof(app));
using (var process = app.AsProcess()) {
NativeMethods.BringToFront(process);
}
}
public void ExcelAppConverter_CanGetProcessFromApp()
{
var app = new xlApp();
try {
var process = app.AsProcess();
Assert.NotNull(process);
}
finally {
app.Quit();
}
}
public static bool IsVisible(this xlApp app)
{
Requires.NotNull(app, nameof(app));
try {
using (var process = app.AsProcess()) {
return(app.Visible && process.IsVisible());
}
}
catch (COMException x)
when(x.Message.StartsWith("The message filter indicated that the application is busy.") ||
x.Message.StartsWith("Call was rejected by callee."))
{
//This means the application is in a state that does not permit COM automation.
//Often, this is due to a dialog window or right-click context menu being open.
return(false);
}
}
