1. public partial class Form1 : Form
    2.     {
    3.     //方法1
    4.     ///调用user32函数
    5.         [DllImport("user32.dll", EntryPoint = "SetFocus")]
    6.         public static extern int SetFocus(IntPtr hWnd);
    8.         public Form1()
    9.         {
    10.             InitializeComponent();
    11.         }
    13.         private void Button1_Click(object sender, EventArgs e)
    14.         {
    15.             Database db = HostApplicationServices.WorkingDatabase;
    16.             var doc = acadApp.DocumentManager.MdiActiveDocument;
    17.             using (var m_DocumentLock = doc.LockDocument())
    18.             {
    19.             ///设置cad窗口为焦点
    20.                 SetFocus(doc.Window.Handle);
    21.                 //方法2:调用CAD自带的Focus函数
    22.                 //Application.MainWindow.Focus();
    23.                 Editor ed = acadApp.DocumentManager.MdiActiveDocument.Editor;
    24.                 using (Transaction tr = db.TransactionManager.StartTransaction())
    25.                 {
    26.                     //using (EditorUserInteraction edUsrInt = ed.StartUserInteraction(this))
    27.                     //{
    28.                     //    edUsrInt.End();
    29.                     //    this.Focus();
    30.                     //}
    31.                     BlockTable bt = db.BlockTableId.GetObject(OpenMode.ForWrite) as BlockTable;
    32.                     BlockTableRecord modeSpace = db.CurrentSpaceId.GetObject(OpenMode.ForWrite) as BlockTableRecord;
    33.                     TextStyleTable tst = db.TextStyleTableId.GetObject(OpenMode.ForRead) as TextStyleTable;
    34.                     var pointRel = ed.GetPoint("\n拾取文字生成位置：");
    35.                     if (pointRel.Status != PromptStatus.OK) return;
    36.                     string lm = this.textBox1.Text;
    37.                     string mph = this.textBox2.Text;
    38.                     string cs = this.textBox3.Text;
    39.                     DBText text = new DBText();
    40.                     text.TextString = lm + mph + "号--" + cs;
    41.                     text.Position = pointRel.Value;
    42.                     text.VerticalMode = TextVerticalMode.TextVerticalMid;
    43.                     text.HorizontalMode = TextHorizontalMode.TextMid;
    44.                     text.AlignmentPoint = pointRel.Value;
    45.                     text.Height = 1;
    46.                     text.WidthFactor = 0.7;
    47.                     text.Layer = "门牌号";
    48.                     text.TextStyleId = tst["宋体"];
    49.                     modeSpace.AppendEntity(text);
    50.                     tr.AddNewlyCreatedDBObject(text, true);
    51.                     tr.Commit();
    52.                 }
    53.             }
    54.         }
    55.     }