topic Re: casting from TypedValue with Type = (int)DxfCode.Bool in .NET Forum

casting from TypedValue with Type = (int)DxfCode.Bool

Anonymous — Sun, 04 Nov 2007 17:15:00 GMT

Hello,
I have successfully stored a boolean value into an Xrec using a TypedValue with Type of (int)DxfCode.Bool.
When I retrieve it the value is a 1 or 0 according to whether I had input True of False. So far, so good. The problem is that I am so far unable to cast this TypedValue.Value of 1 or 0 to either a bool or a Boolean or even an int or a long. How do I get that TypedValue.Value that is returned into another variable?
In the attached file what I am referring to is in the method
public bool getBoolVar(string VarName)

Thanks for your advice.

Re: casting from TypedValue with Type = (int)DxfCode.Bool

Anonymous — Mon, 05 Nov 2007 09:37:42 GMT

You can't cast from an object to an int.

You can use Convert.ToInt32(), etc.

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wrote in message news:5768864@discussion.autodesk.com...
Hello,
I have successfully stored a boolean value into an Xrec using a TypedValue with Type of (int)DxfCode.Bool.
When I retrieve it the value is a 1 or 0 according to whether I had input True of False. So far, so good. The problem is that I am so far unable to cast this TypedValue.Value of 1 or 0 to either a bool or a Boolean or even an int or a long. How do I get that TypedValue.Value that is returned into another variable?
In the attached file what I am referring to is in
the method
public bool getBoolVar(string VarName)

Thanks for your advice.

Re: casting from TypedValue with Type = (int)DxfCode.Bool

Anonymous — Mon, 05 Nov 2007 15:23:41 GMT

Hello, thanks for your reply. Well, I did figure out another way in the meantime. I am not sure why it works, but here it is:

I take the TypedValue.Value (which is an object), and set it equal to an Object variable. Then I did an explicit cast from there to Int16. Then I did an if-else to see if it was a 1 or 0 and set it True of False accordingly. Seems like a long way around, but I only have to write the code once, and I have.

Re: casting from TypedValue with Type = (int)DxfCode.Bool

jbooth — Tue, 06 Nov 2007 15:44:33 GMT

If result is a boolean, and TypedValue.Value is an object:

result = Convert.ToInt32(TypedValue.Value) <> 0

Note that the method will throw an exception if the object can't be converted to an integer (it needs to implement IConvertible.ToInt32).

Re: casting from TypedValue with Type = (int)DxfCode.Bool

joantopo — Sun, 03 Jul 2016 14:25:34 GMT

Hi.

I am in the same issue with DxfCode.Bool, so finally what is the best solution for this?

I am surfing on internet and I don´t find any thread related to this.

Thanks!

Re: casting from TypedValue with Type = (int)DxfCode.Bool

Jeff_M — Sun, 03 Jul 2016 14:59:41 GMT

TypedValue[] tv = xrec.Data.AsArray();
returnValue = Convert.ToBoolean(tv[0].Value);

Re: casting from TypedValue with Type = (int)DxfCode.Bool

joantopo — Sun, 03 Jul 2016 16:10:03 GMT

OK.

Although I have a bidimensional array:

TypedValue tdv2 = variables_globales.matriz[registro, 8]; //bool_BySubentity
int Bool_BySubentity =Convert.ToInt32(tdv2.Value);

So, I would have to do at least something to convert it to a single array.

With "Convert.ToInt32( )" it seems that it works..