在选择筛选器中指定多个条件 （.NET）

选择筛选器可以包含多个属性或对象的筛选条件。通过声明一个包含足够元素来表示每个筛选条件的数组，可以定义要筛选的条件总数。

选择满足两个条件的对象

以下示例指定了两个筛选所选对象的条件：对象必须是圆，并且必须位于图层 0 上。

Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
Imports Autodesk.AutoCAD.EditorInput
 
<CommandMethod("FilterBlueCircleOnLayer0")> _
Public Sub FilterBlueCircleOnLayer0()
    '' Get the current document editor
    Dim acDocEd As Editor = Application.DocumentManager.MdiActiveDocument.Editor

    '' Create a TypedValue array to define the filter criteria
    Dim acTypValAr(2) As TypedValue
    acTypValAr.SetValue(New TypedValue(DxfCode.Color, 5), 0)
    acTypValAr.SetValue(New TypedValue(DxfCode.Start, "CIRCLE"), 1)
    acTypValAr.SetValue(New TypedValue(DxfCode.LayerName, "0"), 2)

    '' Assign the filter criteria to a SelectionFilter object
    Dim acSelFtr As SelectionFilter = New SelectionFilter(acTypValAr)

    '' Request for objects to be selected in the drawing area
    Dim acSSPrompt As PromptSelectionResult
    acSSPrompt = acDocEd.GetSelection(acSelFtr)

    '' If the prompt status is OK, objects were selected
    If acSSPrompt.Status = PromptStatus.OK Then
        Dim acSSet As SelectionSet = acSSPrompt.Value

        Application.ShowAlertDialog("Number of objects selected: " & _
                                    acSSet.Count.ToString())
    Else
        Application.ShowAlertDialog("Number of objects selected: 0")
    End If
End Sub

using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;
 
[CommandMethod("FilterBlueCircleOnLayer0")]
public static void FilterBlueCircleOnLayer0()
{
    // Get the current document editor
    Editor acDocEd = Application.DocumentManager.MdiActiveDocument.Editor;

    // Create a TypedValue array to define the filter criteria
    TypedValue[] acTypValAr = new TypedValue[3];
    acTypValAr.SetValue(new TypedValue((int)DxfCode.Color, 5), 0);
    acTypValAr.SetValue(new TypedValue((int)DxfCode.Start, "CIRCLE"), 1);
    acTypValAr.SetValue(new TypedValue((int)DxfCode.LayerName, "0"), 2);

    // Assign the filter criteria to a SelectionFilter object
    SelectionFilter acSelFtr = new SelectionFilter(acTypValAr);

    // Request for objects to be selected in the drawing area
    PromptSelectionResult acSSPrompt;
    acSSPrompt = acDocEd.GetSelection(acSelFtr);

    // If the prompt status is OK, objects were selected
    if (acSSPrompt.Status == PromptStatus.OK)
    {
        SelectionSet acSSet = acSSPrompt.Value;

        Application.ShowAlertDialog("Number of objects selected: " +
                                    acSSet.Count.ToString());
    }
    else
    {
        Application.ShowAlertDialog("Number of objects selected: 0");
    }
}

Sub FilterBlueCircleOnLayer0()
    Dim sset As AcadSelectionSet
    Set sset = ThisDrawing.SelectionSets.Add("SS1")
 
    ' Define the filter list, only blue Circle objects
    ' on layer 0
    Dim FilterType(2) As Integer
    Dim FilterData(2) As Variant
 
    FilterType(0) = 62: FilterData(0) = 3
    FilterType(1) = 0: FilterData(1) = "Circle"
    FilterType(2) = 8: FilterData(2) = "0"
 
    ' Prompt the user to select objects
    ' and add them to the selection set
    sset.SelectOnScreen FilterType, FilterData
 
    MsgBox "Number of objects selected: " & sset.Count
 
    ' Remove the selection set at the end
    sset.Delete
End Sub