[求助贴]代码出现以下错误提示要求对象引用！
错误提示：非静态的字段、方法或属性“Lab3.jshqCommands.CreateEmployeeDefinition()”要求对象引用。希望好心人帮我看一下，谢谢了。代码如下：using System ;
using Autodesk.AutoCAD.Runtime ;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Colors;
using Autodesk.AutoCAD.EditorInput;
namespace ClassLibrary
{
/// <summary>
/// Summary description for Class.
/// </summary>
public class Class
{
public Class()
{
//
// TODO: Add constructor logic here
//
}
//This function returns the ObjectId for the BlockTableRecord called "EmployeeBlock",
//creating it if necessary.The block contains three entities - circle, text
//and ellipse.
public ObjectId CreateEmployeeDefinition()
{
ObjectId newBtrId = new ObjectId(); //The return value for this function
Database db = HostApplicationServices.WorkingDatabase; //save some space
// The "using" keyword used below automatically calls "Dispose"
// on the "trans" object.
using (Transaction trans = db.TransactionManager.StartTransaction())
{
//Now, drill into the database and obtain a reference to the BlockTable
BlockTable bt = (BlockTable)trans.GetObject(db.BlockTableId, OpenMode.ForWrite);
if ((bt.Has("EmployeeBlock")))
{
newBtrId = bt["EmployeeBlock"];
}
else
{
Point3d center = new Point3d(10, 10, 0); // convenient declaration...
//Declare and define the entities we want to add:
//Circle:
Circle circle = new Circle(center, Vector3d.ZAxis, 2);
//Text:
MText text = new MText();
text.Contents = "Earnest Shackleton";
text.Location = center;
//Ellipse:
Ellipse ellipse = new Ellipse(center, Vector3d.ZAxis, new Vector3d(3, 0, 0), 0.5, 0, 0);
//Next, create a layer with the helper function, and assign
//the layer to our entities.
ObjectId empId = CreateLayer();
text.LayerId = empId;
circle.LayerId = empId;
ellipse.LayerId = empId;
//Set the color for each entity irrespective of the layer's color.
text.ColorIndex = 2;
circle.ColorIndex = 1;
ellipse.ColorIndex = 3;
//Create a new block definition called EmployeeBlock
BlockTableRecord newBtr = new BlockTableRecord();
newBtr.Name = "EmployeeBlock";
newBtrId = bt.Add(newBtr); //Add the block, and set the id as the return value of our function
trans.AddNewlyCreatedDBObject(newBtr, true); //Let the transaction know about any object/entity you add to the database!
newBtr.AppendEntity(circle); //Append our entities...
newBtr.AppendEntity(text);
newBtr.AppendEntity(ellipse);
trans.AddNewlyCreatedDBObject(circle, true); //Again, let the transaction know about our newly added entities.
trans.AddNewlyCreatedDBObject(text, true);
trans.AddNewlyCreatedDBObject(ellipse, true);
}
trans.Commit(); //All done, no errors?Go ahead and commit!
}
return newBtrId;
}
//This function creates a new BlockReference to the "EmployeeBlock" object,
//and adds it to ModelSpace.
public void CreateEmployee()
{
Database db = HostApplicationServices.WorkingDatabase;
Editor ed = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
// The try/finally idiom is another approach for using, commiting
// and disposing of transactions.This technique is demonstrated once here.
// However, the 'Using' approach will be used from here on.
Transaction trans = db.TransactionManager.StartTransaction();
try
{
BlockTable bt = (BlockTable)(trans.GetObject(db.BlockTableId, OpenMode.ForWrite));
BlockTableRecord btr =(BlockTableRecord)trans.GetObject(bt, OpenMode.ForWrite);
//Create the block reference...use the return from CreateEmployeeDefinition directly!
BlockReference br = new BlockReference(new Point3d(10, 10, 0), CreateEmployeeDefinition());
btr.AppendEntity(br); //Add the reference to ModelSpace
trans.AddNewlyCreatedDBObject(br, true); //Let the transaction know about it
trans.Commit(); // Commit is always required to indicate success.
}
catch (System.Exception ex)
{
// The calling, top-level method (such as this) should be used
// to report errors that occur even in called methods.
ed.WriteMessage("Error Creating Employee Block: " + ex.Message);
}
finally
{
trans.Dispose(); // Manual cleanup necessary in this transaction model
}
}
// This function returns the objectId for the "EmployeeLayer", creating it if necessary.
private ObjectId CreateLayer()
{
ObjectId layerId;
Database db = HostApplicationServices.WorkingDatabase;
using (Transaction trans = db.TransactionManager.StartTransaction())
{
// open the layer table for read first, to check to see if the requested layer exists
LayerTable lt = (LayerTable)trans.GetObject(db.LayerTableId, OpenMode.ForRead);
// Check if EmployeeLayer exists...
if (lt.Has("EmployeeLayer"))
{
layerId = lt["EmployeeLayer"];
}
else
{
// if not, create the layer here.
LayerTableRecord ltr = new LayerTableRecord();
ltr.Name = "EmployeeLayer"; // Set the layer name
ltr.Color = Color.FromColorIndex(ColorMethod.ByAci, 2);
// upgrade the open from read to write
lt.UpgradeOpen();
// now add the new layer
layerId = lt.Add(ltr);
trans.AddNewlyCreatedDBObject(ltr, true);
trans.Commit(); // Only need to commit when we have made a change!
}
}
return layerId;
}
}
}
知道了，把两个方法都换成static的就可以了。
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