Not getting Custom Error Message in REST - asp.net

Question

I am developing a REST API.
Below is my code:
In IService.vb
<OperationContract(),
WebGet(UriTemplate:="/DCU/{ClientID}",
RequestFormat:=WebMessageFormat.Xml,
ResponseFormat:=WebMessageFormat.Xml,
BodyStyle:=WebMessageBodyStyle.Bare)>
Function GetAllData(ByVal ClientID As String) As List(Of Data)
In Service.vb
Friend Class Service
Implements IService
Public Function GetAllData(ByVal intClientID As String) As System.Collections.Generic.List(Of Data) Implements ILightingGaleService.GetAllDCUs
Dim lstdata As New List(Of Data)()
If IsNumeric(intClientID) Then
Else
Throw New FaultException("Invalid Client ID")
End If
End Class
In Web.Config file
<serviceDebug includeExceptionDetailInFaults="true"/>
I am getting
Request Error:The server encountered an error processing the request. See server logs for more details.
When I am passing a String value in Client ID. Though I have implemented FaultExpcetion i never get "Invalid Client ID" message in POSTMAN or Web Client.
Can anyone help me on how can I get my custom message on POSTMAN or web client?

Answer 1

I was able to resolve this by implementing below:
I generated a class CustomError:
<DataContract> _
Public Class CustomError
Public Sub New(strError As String, strErrorDesc As String, strErrorCode As Long)
ErrorInfo = strError
ErrorDetails = strErrorDesc
ErroCode = strErrorCode
End Sub
<DataMember> _
Public Property ErrorInfo() As String
Get
Return m_ErrorInfo
End Get
Private Set(value As String)
m_ErrorInfo = value
End Set
End Property
Private m_ErrorInfo As String
<DataMember> _
Public Property ErrorDetails() As String
Get
Return m_ErrorDetails
End Get
Private Set(value As String)
m_ErrorDetails = value
End Set
End Property
Private m_ErrorDetails As String
<DataMember> _
Public Property ErroCode() As Long
Get
Return m_ErroCode
End Get
Private Set(value As Long)
m_ErroCode = value
End Set
End Property
Private m_ErroCode As Long
End Class
In Service.vb
Friend Class Service
Implements IService
Public Function GetAllData(ByVal intClientID As String) As System.Collections.Generic.List(Of Data) Implements ILightingGaleService.GetAllDCUs
Dim lstdata As New List(Of Data)()
If IsNumeric(intClientID) Then
Else
Dim ExceptionError As New CustomError("Client ID not found.", "The Client ID is not found in system.", HttpStatusCode.NotFound)
Throw New WebFaultException(Of CustomError)(ExceptionError, HttpStatusCode.NotFound)
End If
End Class
So this will generate a Webexception for my Custom Error Message which I wanted to display on my Client Application:
Now on my client application I used below
Catch ex As WebException
Dim strError = New StreamReader(ex.Response.GetResponseStream()).ReadToEnd()
lblErrorMsg.Text = strError
End Try
Hope this helps to someone.