导出和导入保存的图层状态 （.NET）

您可以输出和输入保存的图层状态，以便在其他图形中使用相同的图层设置。使用该方法将保存的图层状态导出到 LAS 文件;使用该方法将 LAS 文件输入到图形中。ExportLayerStateImportLayerState

该方法接受两个参数。第一个参数是一个字符串，用于标识要导出的已保存图层状态。第二个参数是要将图层状态导出到的文件的名称。如果未指定文件的路径，则该文件将保存在打开图形的同一目录中。如果指定的文件名已存在，则会覆盖现有文件。使用 .命名文件时的扩展名;这是AutoCAD为导出的图层状态文件识别的扩展名。ExportLayerState

该方法接受一个参数：一个字符串，用于命名包含要导入的图层状态的文件。如果要输入的图层状态不存在于 LAS 文件中，而是存在于图形文件中。可以打开图形文件，然后使用该方法从其他图形的数据库对象导入图层状态。ImportLayerStateImportLayerStateFromDb

输入图层状态时，如果保存的设置中参照的任何特性在要输入到的图形中不可用，则会引发错误条件。但是，导入已完成，并使用默认属性。例如，如果将输出的图层设置为未加载到要输入到的图形中的线型，则会引发错误条件并替换图形的默认线型。您的代码应考虑此错误条件，并在引发此错误时继续处理。

如果输入的文件定义了当前图形中不存在的图层的设置，则会在当前图形中创建这些图层。使用该方法时，保存设置时指定的属性将分配给新图层;新图层的所有其他属性均被指定为默认设置。RestoreLayerState

导出保存的图层设置

下面的示例将保存的图层状态导出到名为ColorLinetype.las 的文件。

Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
 
<CommandMethod("ExportLayerState")> _
Public Sub ExportLayerState()
    '' Get the current document
    Dim acDoc As Document = Application.DocumentManager.MdiActiveDocument

    Dim acLyrStMan As LayerStateManager
    acLyrStMan = acDoc.Database.LayerStateManager

    Dim sLyrStName As String = "ColorLinetype"

    If acLyrStMan.HasLayerState(sLyrStName) = True Then
        acLyrStMan.ExportLayerState(sLyrStName, "c:\my documents\" & _
                                                sLyrStName & ".las")
    End If
End Sub

using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
 
[CommandMethod("ExportLayerState")]
public static void ExportLayerState()
{
    // Get the current document
    Document acDoc = Application.DocumentManager.MdiActiveDocument;

    LayerStateManager acLyrStMan;
    acLyrStMan = acDoc.Database.LayerStateManager;

    string sLyrStName = "ColorLinetype";

    if (acLyrStMan.HasLayerState(sLyrStName) == true)
    {
        acLyrStMan.ExportLayerState(sLyrStName, "c:\\my documents\\" +
                                                sLyrStName + ".las");
    }
}

Sub ExportLayerStates()
    Dim oLSM As AcadLayerStateManager
    Set oLSM = ThisDrawing.Application. _
       GetInterfaceObject("AutoCAD.AcadLayerStateManager.24")
 
    oLSM.SetDatabase ThisDrawing.Database
    oLSM.Export "ColorLinetype", "c:\my documents\ColorLinetype.las"
End Sub

Import saved layer settings

The following example imports the layer state from a file named ColorLinetype.las.

Imports Autodesk.AutoCAD.Runtime
Imports Autodesk.AutoCAD.ApplicationServices
Imports Autodesk.AutoCAD.DatabaseServices
 
<CommandMethod("ImportLayerState")> _
Public Sub ImportLayerState()
    '' Get the current document
    Dim acDoc As Document = Application.DocumentManager.MdiActiveDocument

    Dim acLyrStMan As LayerStateManager
    acLyrStMan = acDoc.Database.LayerStateManager

    Dim sLyrStFileName As String = "c:\my documents\ColorLinetype.las"

    If System.IO.File.Exists(sLyrStFileName) Then
        Try
            acLyrStMan.ImportLayerState(sLyrStFileName)
        Catch ex As Autodesk.AutoCAD.Runtime.Exception
            Application.ShowAlertDialog(ex.Message)
        End Try
    End If
End Sub

using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
 
[CommandMethod("ImportLayerState")]
public static void ImportLayerState()
{
    // Get the current document
    Document acDoc = Application.DocumentManager.MdiActiveDocument;

    LayerStateManager acLyrStMan;
    acLyrStMan = acDoc.Database.LayerStateManager;

    string sLyrStFileName = "c:\\my documents\\ColorLinetype.las";

    if (System.IO.File.Exists(sLyrStFileName))
    {
        try
        {
            acLyrStMan.ImportLayerState(sLyrStFileName);
        }
        catch (Autodesk.AutoCAD.Runtime.Exception ex)
        {
            Application.ShowAlertDialog(ex.Message);
        }
    }
}

Sub ImportLayerStates()
    Dim oLSM As AcadLayerStateManager
    Set oLSM = ThisDrawing.Application. _
                   GetInterfaceObject("AutoCAD.AcadLayerStateManager.24")
    oLSM.SetDatabase ThisDrawing.Database
 
    ' If the drawing you're importing to does not contain
    ' all the linetypes referenced in the saved settings,
    ' an error is returned. The import is completed, though,
    ' and the default linetype is used.
    On Error Resume Next
    oLSM.Import "c:\my documents\ColorLType.las"
 
    If Err.Number = -2145386359 Then
       ' Error indicates a linetype is not defined
       MsgBox ("One or more linetypes specified in the imported " + _
               "settings is not defined in your drawing")
    End If
 
    On Error GoTo 0
End Sub