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    <p>Named Pipes can be used for this. It might be the more acceptable method with .net.You can define a service in the main application that accepts a message from the calling application. Here's a sample of the service, in vb. It calls the main app and passes a string to it, in this case, a filename. It also returns a string, but any parameters can be used here.</p> <pre><code>Public Class PicLoadService : Implements IMainAppPicLoad Public Function LoadPic(ByVal fName As String) As String Implements IMainAppPicLoad.LoadPic ' do some stuff here. LoadPic = "return string" End Function End Class </code></pre> <p>The setup in the calling application is a little more involved. The calling and main application can be the same application.</p> <pre><code>Imports System.Diagnostics Imports System.ServiceModel Imports System.IO Imports vb = Microsoft.VisualBasic Module MainAppLoader Sub Main() Dim epAddress As EndpointAddress Dim Client As picClient Dim s As String Dim loadFile As String Dim procs() As Process Dim processName As String = "MainApp" loadFile = "" ' filename to load procs = Process.GetProcessesByName(processName) If UBound(procs) &gt;= 0 Then epAddress = New EndpointAddress("net.pipe://localhost/MainAppPicLoad") Client = New picClient(New NetNamedPipeBinding, epAddress) s = Client.LoadPic(loadFile) End If End Sub &lt;System.Diagnostics.DebuggerStepThroughAttribute(), _ System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")&gt; _ Partial Public Class picClient Inherits System.ServiceModel.ClientBase(Of IMainAppPicLoad) Implements IMainAppPicLoad Public Sub New(ByVal binding As System.ServiceModel.Channels.Binding, ByVal remoteAddress As System.ServiceModel.EndpointAddress) MyBase.New(binding, remoteAddress) End Sub Public Function LoadPic(ByVal fName As String) As String Implements IMainAppPicLoad.LoadPic Return MyBase.Channel.LoadPic(fName) End Function End Class ' from here down was auto generated by svcutil. ' svcutil.exe /language:vb /out:generatedProxy.vb /config:app.config http://localhost:8000/MainAppPicLoad ' Some has been simplified after auto code generation. &lt;System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0"), _ System.ServiceModel.ServiceContractAttribute(ConfigurationName:="IMainAppPicLoad")&gt; _ Public Interface IMainAppPicLoad &lt;System.ServiceModel.OperationContractAttribute(Action:="http://tempuri.org/IMainAppPicLoad/LoadPic", ReplyAction:="http://tempuri.org/IMainAppPicLoad/LoadPicResponse")&gt; _ Function LoadPic(ByVal fName As String) As String End Interface &lt;System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")&gt; _ Public Interface IMainAppPicLoadChannel Inherits IMainAppPicLoad, System.ServiceModel.IClientChannel End Interface &lt;System.Diagnostics.DebuggerStepThroughAttribute(), _ System.CodeDom.Compiler.GeneratedCodeAttribute("System.ServiceModel", "3.0.0.0")&gt; _ Partial Public Class IMainAppPicLoadClient Inherits System.ServiceModel.ClientBase(Of IMainAppPicLoad) Implements IMainAppPicLoad Public Sub New(ByVal binding As System.ServiceModel.Channels.Binding, ByVal remoteAddress As System.ServiceModel.EndpointAddress) MyBase.New(binding, remoteAddress) End Sub Public Function LoadPic(ByVal fName As String) As String Implements IMainAppPicLoad.LoadPic Return MyBase.Channel.LoadPic(fName) End Function End Class End Module &lt;ServiceContract()&gt; Public Interface IMainAppPicLoad &lt;OperationContract()&gt; Function LoadPic(ByVal fName As String) As String End Interface </code></pre>
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    1. POSend message to a Windows process (not its main window)
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    1. USxpda
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    1. COFor the sake of context, this example uses WCF to exchange data via the named pipe
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      1. USMatt Davis
    2. COI investigated other means of inter-process communication and indeed, this was one of the alternatives, but I believe using simple Widows messages is ligher and simpler.
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      1. USchitza
    3. CO@chitza yeah, with broadcasting PostMessage, not really so light, is it?
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      1. USpeenut
 

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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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