' See the LICENSE file in the project root for more information.
Imports System
+Imports System.Runtime.InteropServices
+
+Imports Microsoft.VisualBasic.CompilerServices
+Imports Microsoft.VisualBasic.CompilerServices.ExceptionUtils
Imports Microsoft.VisualBasic.CompilerServices.Utils
Namespace Microsoft.VisualBasic
Public Module Interaction
+ '============================================================================
+ ' User interaction functions.
+ '============================================================================
+
+ Public Sub Beep()
+#If PLATFORM_WINDOWS Then
+ UnsafeNativeMethods.MessageBeep(0)
+#Else
+ Throw New PlatformNotSupportedException()
+#End If
+ End Sub
+
+ Public Function IIf(ByVal Expression As Boolean, ByVal TruePart As Object, ByVal FalsePart As Object) As Object
+ If Expression Then
+ Return TruePart
+ End If
+
+ Return FalsePart
+ End Function
+
Friend Function IIf(Of T)(ByVal condition As Boolean, ByVal truePart As T, ByVal falsePart As T) As T
If condition Then
Return truePart
Return falsePart
End Function
+ Public Function CreateObject(ByVal ProgId As String, Optional ByVal ServerName As String = "") As Object
+ 'Creates local or remote COM2 objects. Should not be used to create COM+ objects.
+ 'Applications that need to be STA should set STA either on their Sub Main via STAThreadAttribute
+ 'or through Thread.CurrentThread.ApartmentState - the VB runtime will not change this.
+ 'DO NOT SET THREAD STATE - Thread.CurrentThread.ApartmentState = ApartmentState.STA
+
+ Dim t As Type
+
+ If ProgId.Length = 0 Then
+ Throw VbMakeException(vbErrors.CantCreateObject)
+ End If
+
+ If ServerName Is Nothing OrElse ServerName.Length = 0 Then
+ ServerName = Nothing
+ Else
+ 'Does the ServerName match the MachineName?
+ If String.Compare(Environment.MachineName, ServerName, StringComparison.OrdinalIgnoreCase) = 0 Then
+ ServerName = Nothing
+ End If
+ End If
+
+ Try
+ If ServerName Is Nothing Then
+ t = Type.GetTypeFromProgID(ProgId)
+ Else
+ t = Type.GetTypeFromProgID(ProgId, ServerName, True)
+ End If
+
+ Return System.Activator.CreateInstance(t)
+ Catch e As COMException
+ If e.ErrorCode = &H800706BA Then '&H800706BA = The RPC Server is unavailable
+ Throw VbMakeException(vbErrors.ServerNotFound)
+ Else
+ Throw VbMakeException(vbErrors.CantCreateObject)
+ End If
+ Catch ex As StackOverflowException
+ Throw ex
+ Catch ex As OutOfMemoryException
+ Throw ex
+ Catch ex As System.Threading.ThreadAbortException
+ Throw ex
+ Catch e As Exception
+ Throw VbMakeException(vbErrors.CantCreateObject)
+ End Try
+ End Function
+
'============================================================================
' Object/latebound functions.
'============================================================================
set { Value = (int)value + (int)index; }
}
}
+
+ [Fact]
+ public void CreateObject()
+ {
+ Assert.Throws<NullReferenceException>(() => Interaction.CreateObject(null));
+ Assert.Throws<Exception>(() => Interaction.CreateObject(""));
+ // Not tested: valid ProgID.
+ }
+
+ [Theory]
+ [MemberData(nameof(IIf_TestData))]
+ public void IIf(bool expression, object truePart, object falsePart, object expected)
+ {
+ Assert.Equal(expected, Interaction.IIf(expression, truePart, falsePart));
+ }
+
+ private static IEnumerable<object[]> IIf_TestData()
+ {
+ yield return new object[] { false, 1, null, null };
+ yield return new object[] { true, 1, null, 1 };
+ yield return new object[] { false, null, 2, 2 };
+ yield return new object[] { true, null, 2, null };
+ yield return new object[] { false, 3, "str", "str" };
+ yield return new object[] { true, 3, "str", 3 };
+ }
}
}
projects / platform / upstream / dotnet / runtime.git / commitdiff