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Once created, the

...

.NET Component can be used the same way as any other Visual LANSA component. An instance of the component can be created and its properties, methods and events can be used. Some components are very simple and little programming is required to use them, others provide complex functionality and may require much more coding than using native Visual LANSA controls.

Define an instance of a component

...

...

Example

     C#
        public

...

 int Counter    
        {
           get { return mCount; }
           set { mCount = value; }
        }

     RDML
        Define_Com Class(#DOTNET1.TestClasses.MyClass) Name(#NumericClass)

        #NumericClass.Counter := 120

        #STD_INT := #NumericClass.Counter

        Begin_Loop Using(#STD_INT) To(#NumericClass.Counter) Step(2)
        …
        End_Loop

...

Calling Methods
Syntax
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RDML Variable . Method Name ----------------------------------------------- >
...

                                                   |                                                              |
                                                    -- ( --------------------------------- ) -–
...

                                                           |                                           |
                                                           -------- Parameter ----------
...

                                                              |                                    |
                                                                -----------<-----------
Example
     C#
        public void
        IncrementDateByDays(
           ref DateTime                           dateTime,
           int                                    dayAdjustment
...
 )
        {
           dateTime = dateTime.AddDays( dayAdjustment );
...

        }
     RDML
        Define_Com Class(#DOTNET1.TestClasses.MyClass) Name(#LClass01)
        Define Field(#LDat01) Type(*DATETIME)
        Define Field(#LDat02) Type(*DATETIME)
...


        #LDat01 := '1954-04-25 10:04:00.000000'
        #LDat02 := '1954-05-05 10:04:00.000000'

        #LClass01.IncrementDateByDays( #LDat01 10 )

        If ((#LDat01 = #LDat02))
     …
        Endif


     C#
...

        public String
            DoubleIntegerReturnString(
              int                                    number,
              out int                                result )
        {
            result = number * 2;
            return String.Format( "Double
...
 {0
...
} is
...
 {1
...
}", number, result );
...

        }

     RDML
        Define_Com Class(#DOTNET1.TestClasses.MyClass) Name(#LClass01)
        Define Field(#LNum01) Type(*INT) Length(4)
        Define Field(#LNum02) Type(*INT) Length(4)
        Define Field(#LStr01) Type(*CHAR) Length(80)

        #LNum01 := 411
        #LStr01 := #LClass4101.DoubleIntegerReturnString( #LNum01 #LNum02 )
        If (#LNum02 = (#LNum01 * 2))
        …
...

        Endif
Event Handling
Event handling functions are defined using the EVTROUTINE command. See the [<span style="color: #0000ee"><span style="text-decoration: underline; ">EVTROUTINE</span></span>|../../../lansa015/Content/lansa/evtroutine.htm] EVTROUTINE documentation in the Technical Reference Guide for further details about this command. The basic syntax of the command is as follows:
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EVTROUTINE --- HANDLING ( Variable Name . Event Name )------------ >
>---------------------------------------------------------------------------
...
- >
                               |                                                                             |
                                 ---- Parameter Name( Variable Name ) ---- ) -–
...

                                    |                                                            |
                                      ---------------------<-----------------
Example
     C#
        public
...
 class EventArgs1    
        {
           private String         mName;
  
           public EventArgs1() {   }
  
           public String Name

        {
            get { return mName; }
            set \{ mName = value; }
         }
        }

        Public class EventTests
        {
           public event MyEventDelegate MyEvent;
           public delegate void MyEventDelegate( String str, EventArgs1 eventArgs );
        }

   RDML
      Define_Com Class(#DOTNET1.TestClasses.EventTests) Name(#EventTest)

      Evtroutine Handling(#EventTest.MyEvent) Str(#s1) EventArgs(#c1)
         #STD_TEXT := #s1
         #STD_NAME := #c1.Name
...

      Endroutine