Connectivity Software User's Guide and Reference
ShowDialog Method (_DADialog)
Example 



OpcLabs.EasyOpcForms Assembly > OpcLabs.EasyOpc.DataAccess.Forms.Browsing.ComTypes Namespace > _DADialog Interface : ShowDialog Method

The value of this parameter can be null (Nothing in Visual Basic).

Syntax
'Declaration
 
Function ShowDialog( _
   Optional ByVal owner As IWin32Window _
) As DialogResult
'Usage
 
Dim instance As _DADialog
Dim owner As IWin32Window
Dim value As DialogResult
 
value = instance.ShowDialog(owner)

Parameters

owner

The value of this parameter can be null (Nothing in Visual Basic).

Remarks

This member is not compatible with VBScript.

This member or type is for use from COM. It is not meant to be used from .NET or Python. Refer to the corresponding .NET member or type instead, if you are developing in .NET or Python.

Example

COM

// This example shows how to let the user browse for an OPC Data Access item.
//
// Find all latest examples here: https://www.doc-that.com/files/onlinedocs/OPCLabs-ConnectivityStudio/Latest/examples.html .
// OPC client and subscriber examples in Object Pascal (Delphi) on GitHub: https://github.com/OPCLabs/Examples-ConnectivityStudio-OP .
// Missing some example? Ask us for it on our Online Forums, https://forum.opclabs.com/forum/index ! You do not have to own
// a commercial license in order to use Online Forums, and we reply to every post.

class procedure ShowDialog.Main;
var
  ItemDialog: OpcLabs_EasyOpcForms_TLB._DAItemDialog;
begin
  // Instantiate the dialog object
  ItemDialog := CoDAItemDialog.Create;

  ItemDialog.ServerDescriptor.ServerClass := 'OPCLabs.KitServer.2';

  ItemDialog.ShowDialog(nil);

  // Display results
  WriteLn(ItemDialog.NodeElement.ToString);
end;
Rem This example shows how to let the user browse for an OPC Data Access item. 
Rem
Rem Find all latest examples here: https://www.doc-that.com/files/onlinedocs/OPCLabs-ConnectivityStudio/Latest/examples.html .
Rem OPC client and subscriber examples in VBScript on GitHub: https://github.com/OPCLabs/Examples-ConnectivityStudio-VBScript .
Rem Missing some example? Ask us for it on our Online Forums, https://forum.opclabs.com/forum/index ! You do not have to own
Rem a commercial license in order to use Online Forums, and we reply to every post.

Option Explicit

Const DialogResult_OK = 1

Dim ItemDialog: Set ItemDialog = CreateObject("OpcLabs.EasyOpc.DataAccess.Forms.Browsing.DAItemDialog")
ItemDialog.ServerDescriptor.ServerClass = "OPCLabs.KitServer.2"
Dim dialogResult: dialogResult = ItemDialog.ShowDialog
WScript.Echo dialogResult

If dialogResult <> DialogResult_OK Then
    WScript.Quit
End If

' Display results
WScript.Echo "NodeElement: " & ItemDialog.NodeElement
Requirements

Target Platforms: .NET Framework: Windows 10 (selected versions), Windows 11 (selected versions), Windows Server 2016, Windows Server 2022; .NET: Linux, macOS, Microsoft Windows

See Also