Question

I’m working on converting some console code in a Microsoft sample for Dynamics CRM SDK 2011 to an ASP.NET web application. It runs fine in console mode, but after converting to run in ASP.NET I get the error:

A first chance exception of type ‘System.InvalidCastException’ occurred in Microsoft.VisualBasic.dll

Here is my source code:

    Public Sub Run(ByVal connectionString As String, ByVal promptforDelete As Boolean)
    Try
        Dim connection As Microsoft.Xrm.Client.CrmConnection =
            CrmConnection.Parse(connectionString)
        _orgService = New OrganizationService(connection)
        Using _orgService
            Dim account_Renamed As Account = New Account With {.Name = "Fourth Coffee"}
            _accountId = _orgService.Create(account_Renamed)
            Response.Write(CType("{0} {1}", Char()), account_Renamed.LogicalName, account_Renamed.Name)
            Dim cols As New ColumnSet(New String() {"name",
                                                   "address1_postalcode",
                                                    "lastusedincampaign"})
            Dim retrievedAccount As Account = _orgService.Retrieve("account", _accountId, cols).ToEntity(Of Account)()
            Response.Write("Retrieved record.")
            retrievedAccount.Address1_PostalCode = "98052"
            Response.Write("Updated Account Postal Code.")

        End Using
    Catch ex As Exception

    End Try
End Sub

Answer 1

So, I figured it out. In a web-based application there is no need to use {0} {1}:

Response.Write(CType("{0} {1}", Char()), account_Renamed.LogicalName, account_Renamed.Name)

Instead it can look like this:

Response.Write(account_Renamed.LogicalName & " " & account_Renamed.Name)