/// <summary>
/// Gets or Creates Element's shared param.
/// </summary>
/// <param name="elem">Revit Element to get param for</param>
/// <param name="paramName">Parameter Name</param>
/// <param name="grpName">Param Group Name (relevant only when Creation takes place)</param>
/// <param name="paramType">Param Type (relevant only when Creation takes place)</param>
/// <param name="visible">Param UI Visibility (relevant only when Creation takes place)</param>
/// <param name="instanceBinding">Param Binding: Instance or Type (relevant only when Creation takes place)</param>
/// <returns></returns>
public static Parameter GetOrCreateElemSharedParam(Element elem, string paramName, string grpName, ParameterType paramType, bool visible, bool instanceBinding)
{
try
{
// Check if existing
Parameter param = GetElemParam(elem, paramName);
if (null != param)
{
return(param);
}
// If here, need to create it...
BindSharedParamResult res = BindSharedParam(elem.Document, elem.Category, paramName, grpName, paramType, visible, instanceBinding);
if (res != BindSharedParamResult.eSuccessfullyBound && res != BindSharedParamResult.eAlreadyBound)
{
return(null);
}
// If here, binding is OK and param seems to be IMMEDIATELY available from the very same command
return(GetElemParam(elem, paramName));
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(string.Format("Error in getting or creating Element Param: {0}", ex.Message));
return(null);
}
}
// Assumes outer transaction
public static Parameter GetOrCreateElemSharedParam(
Element elem,
string paramName,
string grpName,
ParameterType paramType,
bool visible,
bool instanceBinding,
bool userModifiable,
Guid guid,
bool useTempSharedParamFile,
string tooltip = "",
BuiltInParameterGroup uiGrp = BuiltInParameterGroup.INVALID,
bool allowVaryBetweenGroups = true)
{
try
{
// Check if existing
Parameter param = elem.LookupParameter(paramName);
if (null != param)
{
// NOTE: If you don't want forcefully setting
// the "old" instance params to
// allowVaryBetweenGroups =true,
// just comment the next 3 lines.
if (instanceBinding && allowVaryBetweenGroups)
{
SetInstanceParamVaryBetweenGroupsBehaviour(
elem.Document, guid, allowVaryBetweenGroups);
}
return(param);
}
// If here, need to create it (my custom
// implementation and classes…)
BindSharedParamResult res = BindSharedParam(
elem.Document, elem.Category, paramName, grpName,
paramType, visible, instanceBinding, userModifiable,
guid, useTempSharedParamFile, tooltip, uiGrp);
if (res != BindSharedParamResult.eSuccessfullyBound &&
res != BindSharedParamResult.eAlreadyBound)
{
return(null);
}
// Set AllowVaryBetweenGroups for NEW Instance
// Binding Shared Param
if (instanceBinding)
{
SetInstanceParamVaryBetweenGroupsBehaviour(
elem.Document, guid, allowVaryBetweenGroups);
}
// If here, binding is OK and param seems to be
// IMMEDIATELY available from the very same command
return(elem.LookupParameter(paramName));
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show(
string.Format(
"Error in getting or creating Element Param: {0}",
ex.Message));
return(null);
}
}
