System.ArgumentException: Object is not an ADODB.RecordSet or an ADODB.Record

Question

I used the code below to fill a data table -

OleDbDataAdapter oleDA = new OleDbDataAdapter();
DataTable dt = new DataTable();
oleDA.Fill(dt, Dts.Variables["My_Result_Set"].Value); 

I get the error -

Error: System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.ArgumentException: Object is not an ADODB.RecordSet or an ADODB.Record.
Parameter name: adodb
   at System.Data.OleDb.OleDbDataAdapter.FillFromADODB(Object data, Object adodb, String srcTable, Boolean multipleResults)
   at System.Data.OleDb.OleDbDataAdapter.Fill(DataTable dataTable, Object ADODBRecordSet)
   at ST_34944nkdfnfkdffk333333.csproj.ScriptMain.Main()
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams)
   at Microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTATaskScriptingEngine.ExecuteScript()

Why do I get this error ? I have used the exact same code before and it never gave me any problems.

Answer 1

This error happens when you have not connected two components in SSIS. See image - The execute SQL task produces an ADO record set which will be consumed by the C# script. That ADO is stored in an SSIS object variable (not shown in image) and is picked up by the C# script which I mentioned in my question.