can vs insert a dwg file as a vs resource?
When you embed a DWG file as resources, it usually is extracted into memory as byte array. Since AutoCAD .NET API do not have method to use byte array/memory stream directly as DWG file, you need to firstly save it to disk before using it as DWG file.
Here is the example code (where I embeded a block DWG file "MyBlock.dwg" as a resource item called "MyBlock"):
using System.IO;
using Autodesk.AutoCAD.Runtime;
using CadApp = Autodesk.AutoCAD.ApplicationServices.Application;
[assembly: CommandClass(typeof(DwgAsResources.MyCommand))]
namespace DwgAsResources
{
public class MyCommand
{
[CommandMethod("ExtractFile")]
public static void RunDocumentCommand()
{
var dwg = CadApp.DocumentManager.MdiActiveDocument;
var ed = dwg.Editor;
try
{
var blkFile = ExtractFileFromResource("MyBlock");
if (!string.IsNullOrEmpty(blkFile))
{
//Use this drawing file from AutoCAD's temp file location
// such as insert this block file into current drawing
CadApp.ShowAlertDialog(
"Block file saved in project resources has been extracted!");
File.Delete(blkFile);
}
}
catch (System.Exception ex)
{
ed.WriteMessage("\nError: {0}", ex.Message);
}
finally
{
Autodesk.AutoCAD.Internal.Utils.PostCommandPrompt();
}
}
private static string ExtractFileFromResource(string resourceName)
{
dynamic preferences = CadApp.Preferences;
string filePathName =
(string)preferences.Files.TempFilePath + "\\" + resourceName + ".dwg";
try
{
var bytes = (byte[])Properties.Resources.ResourceManager.GetObject(resourceName);
if (File.Exists(filePathName)) File.Delete(filePathName);
using (var stream = new FileStream(filePathName, FileMode.Create, FileAccess.Write))
{
stream.Write(bytes, 0, bytes.Length);
stream.Close();
}
return filePathName;
}
catch
{
return "";
}
}
}
}
HTH
Well, my code did have a minor bug (but it still works with it, at least with my Acad2020/2021) here:
string filePathName =
(string)preferences.Files.TempFilePath + "\\" + resourceName + ".dwg";
should have been (i.e. extra backslash):
string filePathName =
(string)preferences.Files.TempFilePath + resourceName + ".dwg";
Other than that, the code work OK and this line
var bytes = (byte[])Properties.Resources.ResourceManager.GetObject(resourceName);
works as expected, as long as the resource name is correct, again with my Acad2020/2021, and I believe also with my Acad2018 when my original reply posted. So, I am not sure what help I can offer here.
You should have indicated that the error you get is compiling error, not runtime error. Here is what I imagined what happened with your code:
1. You added a drawing into the resources;
2. You copied the code prom my post and pasted it inti class "myPlugin" and tried to build it, and got error on "Properties" are not defined/declared.
3. You add a static public member "Properties" of object type to the class "myPlugin";
4. Still the code does not compile.
Of course it does not compile: you defined a "Properties" member, but never instantiate it, not to mention it does not have a property "Resources" magically by itself!
Properties is a namespace automatically added to your project's namespace by Visual Studio when you added settings/resources to the project, i.e. [your project namespace].Properties.
It turns out it is a simple typo/mistake that we as programmer often overlook even stared at it straightly: your "myPlugin" class has different namespace from the namespace of the project:
for the project (thus the Properties):
Autocad_2020_plugin_020_Read_Data_from_Resources
for "myPlugin" class:
Autocad_2020_plugin_021_Read_Data_from_Resources
So, you need to change the "_021_" to "_020_" and remove this line(!!!):
public static object Properties { get; private set; }
Sometimes, a simple/stupid mistake we made may cost us hours to find it out, when working too hard.
I do not recall I even needed to open project file to see the references.
In your case (of VS showing acad reference not found), could you just manually remove and re-add the referenced assemblies of correct version? Also make sure the .NET framework is set properly (if you somehow set the project to use very old version of .NET Frameowrk?). Of course to make sure "Copy Local" is set to false. If all these done correctly, I do not see why VS would not found Acad references... unless you made the same mistake as I pointed out in the other reply to the OP: there is typo in the namespace directive in the class file, so classes are not in the same namespace, thus do not see each other unless fully qualified class name is used.
@Norman_Yuan wrote:...
So, you need to change the "_021_" to "_020_" and remove this line(!!!):
public static object Properties { get; private set; }
Sometimes, a simple/stupid mistake we made may cost us hours to find it out, when working too hard.
Hi @Norman_Yuan , I modified my code follow your advices. But now, The error occurs at "Properties..." line; when I replace "Properties" to "Autocad_2020_plugin_020_Read_Data_from_Resources" >> This line has no error; however an error appeared at "filePathName" declared.
I forgot to mention one thing actually:
How did create your DLL project? When you start a new project in Visual Studio and choose C# as the language to use, VS should automatically add Microsoft.CSharp in the references. But your project somehow missing this reference!
You need to add reference to Microsofr.CSharp to the references. Or, you may want to restart a new project, to void having to blindly fix the mess of your existing project. I have no idea how the project got messed up (missing Microsoft.CSharp reference, wrong namespace of the myPlugin class...), but that is the problem you have!
Great with helpfull your post, It'd work after I create a new project from "Autocad Plug-in template C#" and install the Microsoft.CSharp Nuget package 4.7.0
So many thanks with your support @Norman_Yuan . I learn a lot of thing from your posts 😊
