New Post: Accessing SqlDataReader from ClearScript

Hi,

This does not work:

Imports System.Data.SqlClient
Imports Microsoft.ClearScript

Public Class WebForm1
    Inherits System.Web.UI.Page

    Public engine As Windows.JScriptEngine = New Windows.JScriptEngine

    Public conn As SqlConnection = New SqlConnection("connection string")
    Public cmd As SqlCommand = New SqlCommand("select * from contacts", conn)
    Public rdr As SqlDataReader

    Public Sub Initialize()
        engine.AddRestrictedHostObject("me", HostItemFlags.GlobalMembers, Me)

        Try
            engine.Execute("conn.Open(); rdr = cmd.ExecuteReader();")

        Catch ex As Exception
            Response.Write(ex)
        Finally
            engine.Dispose()
            rdr.Close()
            rdr.Dispose()
            cmd.Dispose()
            conn.Close()
            conn.Dispose()
        End Try
    End Sub

    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load

    End Sub
End Class

I get this error:

Microsoft.ClearScript.ScriptEngineException: Ambiguous match found. ---> System.Reflection.AmbiguousMatchException: Ambiguous match found. at System.DefaultBinder.SelectProperty(BindingFlags bindingAttr, PropertyInfo[] match, Type returnType, Type[] indexes, ParameterModifier[] modifiers) at System.RuntimeType.GetPropertyImpl(String name, BindingFlags bindingAttr, Binder binder, Type returnType, Type[] types, ParameterModifier[] modifiers) at System.Type.GetProperty(String name, BindingFlags bindingAttr, Type returnType) at System.Attribute.GetParentDefinition(PropertyInfo property) at System.Attribute.InternalGetCustomAttributes(PropertyInfo element, Type type, Boolean inherit) at System.Attribute.GetCustomAttributes(MemberInfo element, Type type, Boolean inherit) at System.Attribute.GetCustomAttribute(MemberInfo element, Type attributeType, Boolean inherit) at Microsoft.ClearScript.Util.MemberHelpers.GetAttribute[T](MemberInfo member, Boolean inherit) in ClearScript\Util\MemberHelpers.cs:line 136 at Microsoft.ClearScript.Util.MemberHelpers.GetScriptAccess(MemberInfo member) in ClearScript\Util\MemberHelpers.cs:line 124 at Microsoft.ClearScript.Util.MemberHelpers.IsBlockedFromScript(MemberInfo member) in ClearScript\Util\MemberHelpers.cs:line 97 at Microsoft.ClearScript.Util.MemberHelpers.IsScriptable(PropertyInfo property) in ClearScript\Util\MemberHelpers.cs:line 86 at Microsoft.ClearScript.Util.TypeHelpers.b__1a(PropertyInfo property) in ClearScript\Util\TypeHelpers.cs:line 300 at System.Linq.Enumerable.WhereSelectArrayIterator2.MoveNext() at System.Linq.Buffer1..ctor(IEnumerable1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable1 source) at Microsoft.ClearScript.HostItem.GetLocalPropertyNames() in ClearScript\HostItem.cs:line 451 at Microsoft.ClearScript.HostItem.GetAllPropertyNames() in ClearScript\HostItem.cs:line 497 at Microsoft.ClearScript.HostItem.UpdatePropertyNames(Boolean& updated) in ClearScript\HostItem.cs:line 557 at Microsoft.ClearScript.HostItem.b__39() in ClearScript\HostItem.cs:line 1236 at Microsoft.ClearScript.ScriptEngine.HostInvoke[T](Func1 func) in ClearScript\ScriptEngine.cs:line 784 at Microsoft.ClearScript.Windows.WindowsScriptEngine.HostInvoke[T](Func1 func) in ClearScript\Windows\WindowsScriptEngine.cs:line 573 --- End of inner exception stack trace --- at Microsoft.ClearScript.ScriptEngine.ThrowScriptError(IScriptEngineException scriptError) in ClearScript\ScriptEngine.cs:line 840 at Microsoft.ClearScript.Windows.WindowsScriptEngine.ThrowScriptError(Exception exception) in ClearScript\Windows\WindowsScriptEngine.cs:line 642 at Microsoft.ClearScript.Windows.WindowsScriptEngine.<>c__DisplayClass14.b__13() in ClearScript\Windows\WindowsScriptEngine.cs:line 611 at Microsoft.ClearScript.ScriptEngine.ScriptInvoke(Action action) in ClearScript\ScriptEngine.cs:line 800 at Microsoft.ClearScript.Windows.WindowsScriptEngine.ScriptInvoke(Action action) in ClearScript\Windows\WindowsScriptEngine.cs:line 603 at Microsoft.ClearScript.Windows.WindowsScriptEngine.Execute(String documentName, String code, Boolean evaluate, Boolean discard) in ClearScript\Windows\WindowsScriptEngine.cs:line 523 at Microsoft.ClearScript.ScriptEngine.Execute(String documentName, Boolean discard, String code) in ClearScript\ScriptEngine.cs:line 494 at Microsoft.ClearScript.ScriptEngine.Execute(String documentName, String code) in ClearScript\ScriptEngine.cs:line 473 at Microsoft.ClearScript.ScriptEngine.Execute(String code) in ClearScript\ScriptEngine.cs:line 454 at WebApplication1.WebForm1.Initialize() in WebApplication1\WebForm1.aspx.vb:line 17