[Closed] dotnet and byte arrays

Hi Ben,

I’ve tried to get this working but it seems that the “byte” value is auto converted to Int32 by MAXScript :D.
There’s several problem with dotNet in MAXScript in this kind of case. It’s the same problem when we want to build an object array : object[].

So, I think that the best solution is to create a .NET class library (C#/VB.NET) that does the job for you.
In MAXScript you can pass it the string you want to post as a web request and in C#/VB.NET the encoding stuff is done.

Thanks ypuech, I’ll look into this, as it’s has been a long few days trouble shooting this problem.

I went to your website, seems you have some reading material on this very process.

I’ll let you know how I go.

Thanks!

Hi Ben,

Yes I’ve written the article Using a .Net 2.0 Class Library in MASXcript.
I think it will help some scripters that do not know advanced/windows programming.

Yannick,

thank you.
I still haven’t installed my max 9, but after reading your pdf I am eager for it …

Georg

Ok, so I’ve installed MS Visual C# Express and I’ve built an assembly. However, I can’t seem to get the security web permissions working… And there seems to be little help available on the topic.
Here’s what I have so far. It throws an exception when you try to connect()

#region Referenced Assemblies
 using System;
 using System.Net;
 using System.IO;
 using System.Text;
 using System.Security.Permissions;
 #endregion // Referenced Assemblies
 
 // [assembly: WebPermissionAttribute(SecurityAction.RequestMinimum, Unrestricted = true)] // This doesn't work either.
 // Usage in maxscript:
 // request = dotNetObject "Wrangler.webrequest"
 // request.url = "http://10.1.1.3"
 // request.postdata = "project_id=hello"
 // print (request.connect())
 
 namespace wrangler
 {	
 	public class webrequest 
 	{
 		private string url;
 		private string postdata;
 		public string Url { get { return url; } set { url = value; } }
 		public string Postdata { get { return postdata; } set { postdata = value; } }
 
 		#region Methods
 
 		public string connect()
 		{
 
 		   
 		   //try
 		   //{
 				// Create a WebPermission.instance.
 				WebPermission myWebPermission = new WebPermission(NetworkAccess.Connect, "http://10.1.1.3");
 				myWebPermission.AddPermission(NetworkAccess.Accept, "http://10.1.1.3");
 				myWebPermission.Demand();
 
 				// Everything after this should have permission to access  http://10.1.1.3 
 
 				// Create a 'WebRequest' object with the specified url. 
 				WebRequest myWebRequest = WebRequest.Create("http://10.1.1.3");
 
 				UTF8Encoding utf8 = new UTF8Encoding();
 
 				// Encode the string.
 				Byte[] postBuffer = utf8.GetBytes(this.postdata);
 
 				// Set properties of the WebRequest.
 				myWebRequest.Method = "POST";
 				myWebRequest.ContentType = "application/x-www-form-urlencoded";
 				myWebRequest.ContentLength = postBuffer.Length;
 				myWebRequest.Timeout = 5000; // 5 seconds
 
 				Stream newStream = myWebRequest.GetRequestStream();
 				newStream.Write(postBuffer, 0, postBuffer.Length);
 
 				// Close the Stream object.
 				newStream.Close();
 
 				// Assign the response object of 'WebRequest' to a 'WebResponse' variable.
 				WebResponse myWebResponse = myWebRequest.GetResponse();
 				Stream responseStream = myWebResponse.GetResponseStream();
 
 				Encoding encode = System.Text.Encoding.GetEncoding("utf-8");
 
 				StreamReader readStream = new StreamReader(responseStream, encode);
 				String htmlString = readStream.ReadToEnd();
 
 				readStream.Close();
 
 				return htmlString;
 
 			//}
 			//catch
 			//{
 			//	return "No access";
 			//}
 			
 		}
 
 		#endregion // Methods
 	}
 }

Any help would be appeciated.

Hi Ben,

The problem in MAXScript is that you cannot debug the class library. So, the better solution is to test/debug it in C#; to view where the system throws an exception in connect().

I’m not very experienced in web development with .NET framework; you can find many .NET samples at http://www.codeproject.com/
There’s many others interesting websites/communities covering .NET.

It’s better to use the properties :
request.url = “ http://10.1.1.3 ” -> request.Url
request.postdata = “project_id=hello” -> request.Postdata

MAXScript allows the access of private data ?!

Hi ypuech,

I’ve got it all sussed now… the permission problem was coming down to the location of the dll file, which was on a network drive, while it needed to be a sub dir of the 3dsmax root.

So now I can start learning some more dotnet, it really is quite powerful. Particularly in addition to maxscript.

Thanks for your help.