ExecuteScriptCode (Application)

Introduced

5.0

Description

Executes a string of script code.

Use ExecuteScriptCode when you need to generate and execute a fragment of code written in a different scripting language (for example, to run some VBScript code from JScript).

Unlike Application.ExecuteScript, which reads script code from a file, ExecuteScriptCode takes a string of script code as an argument.

Scripting Syntax

Application.ExecuteScriptCode( Code, Language, [ProcName], [Params] )

C# Syntax

Object Application.ExecuteScriptCode( String in_ScriptText, String in_LanguageProgID, String in_ProcName, Object& io_Params );

Parameters

Parameter

Type

Description

Code

String

A string that contains valid script code.

Language

String

Specifies the scripting language of the code (for example, "VBScript", "JScript", or "Python").

ProcName

String

Name of a procedure (a function or subroutine) to execute. When you execute a procedure, any global code (code that is outside of a procedure) is also executed.

Tip: In VBScript, you can execute a subroutine ("sub") or a function ("function"). In JScript, procedures are declared with the "function" keyword; in Python, with "def", and in PerlScript, with "sub".

Params

Array of Variants

Arguments to pass to the procedure.

Return Value

A Variant containing the return value of the subroutine. The return value is always empty if no subroutine argument is specified.

Examples

1. JScript Example

//JScript example that shows how to mix scripting languages
vbscriptFragment = "LogMessage \"Hello from VBScript\"" ;
pythonScriptFragment = "Application.LogMessage( \"Hello from Python\" )" ;
jscriptFragment = "LogMessage(\"Hello from JScript\")" ;

Application.ExecuteScriptCode( vbscriptFragment, "VBScript" ) ;
Application.ExecuteScriptCode( pythonScriptFragment, "Python" ) ;

// Eval is a built-in JScript function that does the same thing 
// as Application.ExecuteScriptCode, but only for JScript code
eval( jscriptFragment ) ;


// Errors in the executed script are logged and returned
// to the caller, so you can catch and handle exceptions
try
{
   Application.ExecuteScriptCode( "Bad Script Code", "VBScript" ) ;
}
catch( e )
{
   LogMessage( "Script code failed: " + e.description ) ;
}

//Expected output:
//INFO : Hello from VBScript
//INFO : Hello from Python
//INFO : Hello from JScript
//ERROR : Expected end of statement - [line 1]
//INFO : Script code failed: Expected end of statement [Line 1 in Script Text]

2. VBScript Example

'VBScript example that shows how to use mix scripting languages

vbscriptFragment = "LogMessage ""Hello from VBScript"" "
pythonScriptFragment = "Application.LogMessage( ""Hello from Python"" )" 
jscriptFragment = "LogMessage(""Hello from JScript"")" 

' Execute is a built-in VBScript function that does the same 
' thing as Application.ExecuteScriptCode, but only for VBScript code
Execute( vbscriptFragment)


Application.ExecuteScriptCode jscriptFragment , "JScript" 

'This line fails if Python is not installed
Application.ExecuteScriptCode pythonScriptFragment, "Python" 

' Errors in the executed script are logged and returned
' to the caller, so you can catch and handle exceptions
on error resume next
Application.ExecuteScriptCode "Bad Script Code", "VBScript" 

if err <> 0 then
   LogMessage "Script code failed: " & err.description 
end if

'Expected output:
'INFO : Hello from VBScript
'INFO : Hello from Python
'INFO : Hello from JScript
'ERROR : Expected end of statement - [line 1]
'INFO : Script code failed: Expected end of statement [Line 1 in Script Text]

3. JScript Example

// JScript example that shows how to call a simple VBScript function from JScript, 
// and how to pass in arguments and get the return value

var strVBRoutine = "function VBRound( in_var )\n" + 
          "VBRound = Round( in_var )\n" + 
          "end function" ;

var aArgs = new Array ;
aArgs[0] = 1.056879 ;

LogMessage( Application.ExecuteScriptCode( strVBRoutine, "VBScript", "VBRound", aArgs) ) ;

aArgs[0] = 99.9999 ;
LogMessage( Application.ExecuteScriptCode( strVBRoutine, "VBScript", "VBRound", aArgs) ) ;

// Expected results;
//INFO : 1
//INFO : 100

See Also

Command

Application.ExecuteScript

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