/// <summary>
/// Implement this method as an external command for Revit.
/// </summary>
/// <param name="commandData">An object that is passed to the external application
/// which contains data related to the command,
/// such as the application object and active view.</param>
/// <param name="message">A message that can be set by the external application
/// which will be displayed if a failure or cancellation is returned by
/// the external command.</param>
/// <param name="elements">A set of elements to which the external application
/// can add elements that are to be highlighted in case of failure or cancellation.</param>
/// <returns>Return the status of the external command.
/// A result of Succeeded means that the API external method functioned as expected.
/// Cancelled can be used to signify that the user cancelled the external operation
/// at some point. Failure should be returned if the application is unable to proceed with
/// the operation.</returns>
public Autodesk.Revit.UI.Result Execute(Autodesk.Revit.UI.ExternalCommandData commandData,
ref string message, ElementSet elements)
{
try
{
// create a form to display the information of view filters
using (ViewFiltersForm infoForm = new ViewFiltersForm(commandData))
{
infoForm.ShowDialog();
}
return(Autodesk.Revit.UI.Result.Succeeded);
}
catch (Exception ex)
{
// If there is something wrong, give error information and return failed
message = ex.Message;
return(Autodesk.Revit.UI.Result.Failed);
}
}
/// <summary>
/// Check if input name is valid for new filter, the name should be unique
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void okButton_Click(object sender, EventArgs e)
{
// Check name is not empty
String newName = newFilterNameTextBox.Text.Trim();
if (String.IsNullOrEmpty(newName))
{
ViewFiltersForm.MyMessageBox("Filter name is empty!");
newFilterNameTextBox.Focus();
return;
}
//
// Check if filter name contains invalid characters
// These character are different from Path.GetInvalidFileNameChars()
char[] invalidFileChars = { '\\', ':', '{', '}', '[', ']', '|', ';', '<', '>', '?', '\'', '~' };
foreach (char invalidChr in invalidFileChars)
{
if (newName.Contains(invalidChr))
{
ViewFiltersForm.MyMessageBox("Filter name contains invalid character: " + invalidChr);
return;
}
}
//
// Check if name is used
// check if name is already used by other filters
bool inUsed = m_inUseFilterNames.Contains(newName, StringComparer.OrdinalIgnoreCase);
if (inUsed)
{
ViewFiltersForm.MyMessageBox("The name you supplied is already in use. Enter a unique name please.");
newFilterNameTextBox.Focus();
return;
}
m_filterName = newName;
this.Close();
this.DialogResult = DialogResult.OK;
}