c# - Doesn't load assembly in powershell -

i try execute c# in powershell. wrote script, doesn't work. script contain in c# hello simple class test. in future need work xml. , that's why add system.xml.

source = @" using system; using system.io; using system.xml; using system.xml.serialization; namespace convertertrx {     public class ps     {         public static string convert()         {             xmlserializer xmlser = new xmlserializer(typeof(string));             return "convert1";         }         public static string convert1(string path)         {             return "convert2="+path+"/123";         }     } } "@ if (-not ([system.management.automation.pstypename]'ps').type) {     add-type -assemblyname microsoft.csharp     add-type -assemblyname system     add-type -assemblyname system.core     add-type -assemblyname system.data     add-type -assemblyname system.data.datasetextensions     add-type -assemblyname system.xml     add-type -assemblyname system.xml.linq     add-type  -typedefinition $source -language csharp } "call function" [convertertrx.ps]::convert() 

this script throw exception:

add-type : *\temp\zktiv5n4.0.cs(3) : type or namespace name 'xml' not exist in namespace 'system' (are missing assembly reference?) *\temp\zktiv5n4.0.cs(2) : using system.io; *\temp\zktiv5n4.0.cs(3) : >>> using system.xml; *\temp\zktiv5n4.0.cs(4) : using system.xml.serialization; 

so, how it's fix?

you need add -referencedassemblies parameter add-type cmdlet call, otherwise you'll not namespaces.

$referencingassemblies = ("c:\windows\microsoft.net\framework\v4.0.30319\system.xml.dll") add-type  -typedefinition $source -referencedassemblies $referencingassemblies -language csharp