.NET type conversions in LabVIEW

[pawhan11]

Hello,

I need to implement this simple data casting of c# objects in LV

object o = "MyString";
SqlString t1 = o as String      

 

How this can be done in LV??

[wiebe@CARYA]

"To .NET Object.vi" in Connectivity>.NET.

Simply wire a string, and get a string object.

[pawhan11]

Thanks for the reply

But in this scenario I have .Net string and I need .Net SqlString as attached below:

[wiebe@CARYA]

Why don't you use the SqlString(string Data) constructor?

You can't cast a string to an SqlString, because the string object is not an SqlString.

[pawhan11]

Thanks for reply.

When I compile c# code it works fine and there is no exception. 

There is implicit conversion possible and I need to force this in LV code.

https://msdn.microsoft.com/en-us/library/system.data.sqltypes.sqlstring.op_implicit(v=vs.110).aspx

[wiebe@CARYA]

This doesn't work?

[pawhan11]

The problem is string object is returned by some other functions, I do not create it.

I could force object to string and back but i think this will work only for string type.

I have other situations where I need for it to behave like this simple c# code snipped where AS statement is used.

[daveTW]

You don't have access to c#- operators from LabVIEW, because they are a part of the C# language. With LabVIEW you access the .NET- Framework, not the C# langage features.

I think, your own solution is a good approach.

[wiebe@CARYA · Accepted solution]

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@daveTW wrote:

You don't have access to c#- operators from LabVIEW, because they are a part of the C# language. With LabVIEW you access the .NET- Framework, not the C# langage features.

I think, your own solution is a good approach.

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I agree, not much alternatives in LabVIEW, besides doing it manually for each data type. If you really want this to be done automatically for all types, you'll need to make a .NET assembly in c#. You don't need VS or anything, there is a c# compiler included in .NET.

I you're really adventurous (=masochistic), you might be able to do it with .NET reflection, but I'm certain it won't be easy nor productive (=time consuming with small change of success). 

[pawhan11]

Thanks for the interest in this topic.

Simple dll to handle conversions will do it. I try to avoid making to many dlls because it gets out of controll sooner or later.

The more i dig into how things can be solved in C# the more I realise how LV is limited...