使用mtext将文件名中的某些特定文本打印到dwg

Question

我有一个dwg文件，名称是534-W1A-R1.dwg，我想在我的dwg文件上使用MText仅打印W1A-R1 。

Answer 1

System.IO.Path.GetFileNameWithoutExtension("534-W1A-R1.dwg").Substring(fileName.IndexOf('-') + 1)

returns "W1A-R1"

Or, using Regular expressions:

Regex.Match("534-W1A-R1.dwg", @"-(.+)\.").Groups[1].Value

Answer 2

You can use Databse class to extract it's file name. Then as usual - create new MText and add to the ModelSpace BlockTableRecord .

[CommandMethod("AddFileNameText")]
public static void AddFileNameText()
{
    Document acDoc = Application.DocumentManager.MdiActiveDocument;

    var db = acDoc.Database;
    using (Transaction transaction = db.TransactionManager.StartTransaction())
    {
        ObjectId idModelSpace = SymbolUtilityServices.GetBlockModelSpaceId(db);

        BlockTableRecord modelSpace =
            transaction.GetObject(idModelSpace, OpenMode.ForWrite) as
            BlockTableRecord;

        MText acMText = new MText();
        acMText.SetDatabaseDefaults();

        string strFilePath = db.Filename; //c:\534-W1A-R1.dwg
        strFilePath = 
            System.IO.Path.GetFileNameWithoutExtension(strFilePath); //534-W1A-R1

        //Do ANY text processing            
        if (strFilePath.IndexOf('-') > 0)
            strFilePath = strFilePath.Substring(
                strFilePath.IndexOf('-') + 1); //W1A-R1

        acMText.Contents = strFilePath;

        modelSpace.AppendEntity(acMText);
        transaction.AddNewlyCreatedDBObject(acMText, true);

        transaction.Commit();
    }
}