Topic: Can I make it any tougher?

[Jeff_M]

I guess I have a complete mental block on this C# language. Try as I might, I cannot get this to work. Everything goes fine until I want to output what I'm doing to the command line......at which point I get a major error thrown in Acad. I'll try to capture a PNG of the error in a few minutes.

Code: [Select]

            PromptDistanceOptions distPrmt = new PromptDistanceOptions("");
            distPrmt.Message = "\nOffset distance, negative for left side: ";
            distPrmt.DefaultValue = 5.0;
            PromptDoubleResult offDist = ed.GetDistance(distPrmt);
            ed.WriteMessage(offDist.Value.ToString());
In Debug mode I can see the offDist variable get set to {{OK}, 15.0} and I can inspect it and see that the value is 15.0. But once it gets to the WriteMessage line, Kaboom. Anyone (everyone) care to tell me what the heck I'm missing? 

[Kerry]

Jeff ,
How is ed defined ?

What is the exception ?

[Jeff_M]

Jeez, now it works.....I guess I didn't rebuild it after changing this line:
ed.WriteMessage(offDist.Value.ToString());

from this:
ed.WriteMessage(offDist.Value.ToString("D"));

So now my question is this, how do I format the Value to output like this: 15.00' ? As it is now, it prints just 15 to the command line.

Kerry,

            Document doc = acadApp.DocumentManager.MdiActiveDocument;
            Editor ed = doc.Editor;

The exception is:

[MickD]

just try sending it to writeline as offsetdist.value (not ToString()) and write line should be able to format it appropriately (I think from memory)

[T.Willey]

See here for info on converting strings.

[Kerry]

Having fun ?

In Debug mode I can see the offDist variable get set to {{OK}, 15.0} ... 

good to see you got the debugger working in Express !

[Kerry]

Jeff, I'll have a look at the ToString Override for you ..
Autodesk.AutoCAD.EditorInput.PromptResult.ToString(IFormatProvider) : String

I think that should work ...

[Kerry]

Just an aside,
I've found this really handy
 - .NET Reflector, Version 4.2.50.0
http://www.aisto.com/roeder/dotnet/

Just load up :-
C:\ACAD2007\acmgd.dll
C:\ACAD2007\acdbmgd.dll
C:\ACAD2007\acmgdinternal.dll
%SystemRoot%\Microsoft.net\Framework\vxxxxx\System.Windows.Forms.dll
%SystemRoot%\Microsoft.net\Framework\vxxxxx\mscorlib.dll

Great for rainy weekends

[Jeff_M]

OK....
Mick, yes I tried that and it still only outputs what it wants. In this case it should be 15.00 but I only get 15 at the prompt.

Kerry, I've got lots of reading now, thanks.

Tim, thanks for the link. Based on the discussion there I was able to get "N2" to work. "D2" throws the exception, but the Help says that d,D,n,N are all valid Format identifiers.......

Here's a quickie test that shows these in action:

Code: [Select]

using System;
using System.Collections.Generic;
using System.Text;
using Autodesk.AutoCAD.Runtime;
using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.EditorInput;

using acadApp = Autodesk.AutoCAD.ApplicationServices.Application;
namespace SelectFeature
{
    public class Class1
    {
        public Class1()
        {
        }
        [CommandMethod("TestMe1")]
        static public void testmenow()
        {
            Document doc = acadApp.DocumentManager.MdiActiveDocument;
            Editor ed = doc.Editor;
            PromptDistanceOptions distPrmt = new PromptDistanceOptions("");
            distPrmt.Message = "\nOffset distance, negative for left side: ";
            distPrmt.DefaultValue = 5.0;
            PromptDoubleResult offDist = ed.GetDistance(distPrmt);
            ed.WriteMessage("Test1 Offset selected is: " + offDist.Value);
        }
        [CommandMethod("TestMe2")]
        static public void testmenow()
        {
            Document doc = acadApp.DocumentManager.MdiActiveDocument;
            Editor ed = doc.Editor;
            PromptDistanceOptions distPrmt = new PromptDistanceOptions("");
            distPrmt.Message = "\nOffset distance, negative for left side: ";
            distPrmt.DefaultValue = 5.0;
            PromptDoubleResult offDist = ed.GetDistance(distPrmt);
            ed.WriteMessage("Test2 Offset selected is: " + offDist.Value.ToString("N2"));
        }
        [CommandMethod("TestMe3")]
        static public void testmenow()
        {
            Document doc = acadApp.DocumentManager.MdiActiveDocument;
            Editor ed = doc.Editor;
            PromptDistanceOptions distPrmt = new PromptDistanceOptions("");
            distPrmt.Message = "\nOffset distance, negative for left side: ";
            distPrmt.DefaultValue = 5.0;
            PromptDoubleResult offDist = ed.GetDistance(distPrmt);
            ed.WriteMessage("Test3 Offset selected is: " + offDist.Value.ToString("D2"));
        }
     }
  }
This will create 3 commands, TestMe1, TestMe2 & TestMe3. 1 & 2 will work, but 3 should throw that exception.

I'm off to take some aspirin. This little problem has kicked my behind for 2 hours now......

BTW, Kerry, how'd you know we were going to be rained on all weekend?

[LE]

Two hours?..... it is nothing.... 

See if the code below helps.... you can change the format inside of the ToString("0.00") to change the precision, but do not if that is what you are looking for, I remember reading a comment by Tony Tanzillo about this issue, in the adesk net.... but do not have the link.

Code: [Select]

        [CommandMethod("TestMe3")]
        static public void testmenow()
        {
            Document doc = acadApp.DocumentManager.MdiActiveDocument;
            Editor ed = doc.Editor;
            PromptDistanceOptions distPrmt = new PromptDistanceOptions("");
            distPrmt.Message = "\nOffset distance, negative for left side: ";
            distPrmt.DefaultValue = 5.0;
            PromptDoubleResult offDist = ed.GetDistance(distPrmt);
            if (offDist.Status != PromptStatus.OK) return;

            ed.WriteMessage("Test3 Offset selected is:  " + offDist.Value.ToString("00.00"));
        }


[Kerry]

BTW, Kerry, how'd you know we were going to be rained on all weekend?

heheheheh
one of my lesser talents


There MUST be a method in the NET API to format inits .. distance or somesuch .. I'll have a look this afternoon if no-one sorts it out ..

[LE]

No samples out there.... now base on what Tony Tanzillo recommended, I went into the VS2005 IDE and click into the Class View icon, and on the View Class Diagram for the Autodesk.AutoCAD.Runtime

And we can use something like this:

Code: [Select]

string output = Converter.DistanceToString(offDist.Value, DistanceUnitFormat.Decimal, 2);
ed.WriteMessage("Test3 Offset selected is:  " + output);

r&r

[Kerry]

Nice investigation Luis !

[LE]

Nice investigation Luis !

Yes... I'm trying to put good use of all the free time I have now...