Autodesk.Revit.DB.BuiltInFailures.SpanDirectionSymbolFailures

该类别包含了用于维护Revit中的跨度方向符号（Span Direction Symbol）的错误消息。

错误消息

以下are failure message identifiers（错误消息标识符）：

• CableTray_SpanDirectionSymbolOverlapFailures：跨度方向符号（Span Direction Symbol）重叠
• Conduit_SpanDirectionSymbolOverlapFailures：跨度方向符号（Span Direction Symbol）重叠
• Duct_SpanDirectionSymbolOverlapFailures：跨度方向符号（Span Direction Symbol）重叠
• FlexDuct_SpanDirectionSymbolOverlapFailures：跨度方向符号（Span Direction Symbol）重叠
• FlexPipe_SpanDirectionSymbolOverlapFailures：跨度方向符号（Span Direction Symbol）重叠
• Pipe_SpanDirectionSymbolOverlapFailures：跨度方向符号（Span Direction Symbol）重叠

处理错误消息

以下are resolution options（解决方案选项）：

• DeleteElements：删除标记有错误的元素（或其它元素）
• RemoveSpans：移除重叠的跨度方向符号（Span Direction Symbols）

用法示例

以下示例展示如何捕获跨度方向符号（Span Direction Symbols）的重叠：

try
{
    // some code that may cause a span direction symbol overlap failure
}
catch (Autodesk.Revit.Exceptions.InvalidOperationException ex)
{
    if (ex.Message.Equals(Autodesk.Revit.DB.BuiltInFailures.SpanDirectionSymbolFailures.Conduit_SpanDirectionSymbolOverlapFailures))
    {
        // handle the conduit span direction symbol overlap failure
    }
    else if (ex.Message.Equals(Autodesk.Revit.DB.BuiltInFailures.SpanDirectionSymbolFailures.Duct_SpanDirectionSymbolOverlapFailures))
    {
        // handle the duct span direction symbol overlap failure
    }
    else if (ex.Message.Equals(Autodesk.Revit.DB.BuiltInFailures.SpanDirectionSymbolFailures.FlexDuct_SpanDirectionSymbolOverlapFailures))
    {
        // handle the flex duct span direction symbol overlap failure
    }
    else if (ex.Message.Equals(Autodesk.Revit.DB.BuiltInFailures.SpanDirectionSymbolFailures.FlexPipe_SpanDirectionSymbolOverlapFailures))
    {
        // handle the flex pipe span direction symbol overlap failure
    }
    else if (ex.Message.Equals(Autodesk.Revit.DB.BuiltInFailures.SpanDirectionSymbolFailures.Pipe_SpanDirectionSymbolOverlapFailures))
    {
        // handle the pipe span direction symbol overlap failure
    }
    else
    {
        // handle any other failure
    }
}