用C#在VS2019中用OPCUA通讯使用WPF绑定KEPserverEX6的节点浏览目录到listbox上
时间: 2024-03-26 07:39:49 浏览: 84
基于vs2019 C# 的OPC UA客户端
好的,你的问题是如何在C#中使用OPCUA通讯,绑定KEPserverEX6的节点浏览目录到WPF的listbox上。我会尽力回答你的问题。
首先,你需要安装OPCUA的相关库。可以使用NuGet安装OPCUA库,具体操作如下:
1. 打开Visual Studio 2019,创建一个新的WPF应用程序项目。
2. 在“解决方案资源管理器”中,右键单击项目名称,然后选择“管理NuGet程序包”。
3. 在“NuGet程序包管理器”中,在搜索框中输入“OPCUA”,然后选择“OPCUA.Core”、“OPCUA.Client”和“OPCUA.Server”这三个包进行安装。
安装完成后,我们可以开始编写代码了。首先,我们需要创建一个OPC UA客户端实例。在MainWindow.xaml.cs文件中,添加以下代码:
```csharp
using Opc.Ua;
using Opc.Ua.Client;
// 创建OPC UA客户端实例
private static readonly ApplicationConfiguration Config = new ApplicationConfiguration()
{
ApplicationName = "OPCUA-Client",
ApplicationType = ApplicationType.Client,
SecurityConfiguration = new SecurityConfiguration
{
ApplicationCertificate = new CertificateIdentifier
{
StoreType = @"Directory",
StorePath = @"%CommonApplicationData%\OPCUA-Client\pki\own"
},
TrustedPeerCertificates = new CertificateTrustList
{
StoreType = @"Directory",
StorePath = @"%CommonApplicationData%\OPCUA-Client\pki\trusted"
},
TrustedIssuerCertificates = new CertificateTrustList
{
StoreType = @"Directory",
StorePath = @"%CommonApplicationData%\OPCUA-Client\pki\issuer"
},
RejectedCertificateStore = new CertificateStoreIdentifier
{
StoreType = @"Directory",
StorePath = @"%CommonApplicationData%\OPCUA-Client\pki\rejected"
}
},
TransportConfigurations = new TransportConfigurationCollection(),
TransportQuotas = new TransportQuotas
{
OperationTimeout = 15000
},
ClientConfiguration = new ClientConfiguration
{
DefaultSessionTimeout = 60000,
WellKnownDiscoveryUrls = new StringCollection { "opc.tcp://localhost:4840" }
},
TraceConfiguration = new TraceConfiguration()
};
private static readonly SessionChannel _sessionChannel = null;
private static readonly Session _session = null;
public MainWindow()
{
InitializeComponent();
// 创建一个OPC UA客户端实例
var endpointUrl = "opc.tcp://localhost:4840";
var endpoint = new EndpointDescription(endpointUrl);
var endpointConfiguration = EndpointConfiguration.Create(Config);
var endpointBinding = endpoint.CreateBinding();
var endpointChannel = new ChannelBase(endpointConfiguration, endpointBinding, new Uri(endpointUrl));
_sessionChannel = SessionChannel.Create(
Config,
endpoint,
endpointConfiguration,
endpointBinding,
new ConfiguredEndpoint(null, endpoint, endpointConfiguration),
endpointChannel);
var credentials = new UserIdentity(new AnonymousIdentityToken());
_session = Session.Create(
Config,
_sessionChannel,
new ConfiguredEndpoint(null, endpoint, endpointConfiguration),
true,
String.Empty,
credentials,
null).Result;
// 浏览节点
var rootNode = new ReferenceDescription
{
DisplayName = "Objects",
NodeId = ObjectIds.ObjectsFolder,
ReferenceTypeId = ReferenceTypeIds.Organizes,
TypeDefinition = ObjectTypeIds.FolderType
};
var nodes = _session.FetchReferences(rootNode).Result;
var listItems = new List<string>();
foreach (var node in nodes)
{
listItems.Add(node.DisplayName.Text);
}
ListBox.ItemsSource = listItems;
}
```
在上述代码中,我们创建了一个OPC UA客户端实例,并且通过OPC UA客户端实例浏览了KEPserverEX6的节点目录,将其显示在了WPF的ListBox控件上。
最后,在MainWindow.xaml文件中,添加一个ListBox控件,代码如下:
```xml
<Window x:Class="OPCUA_Client.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="450" Width="800">
<Grid>
<ListBox x:Name="ListBox" HorizontalAlignment="Left" Height="400" Margin="10,10,0,0" VerticalAlignment="Top" Width="760"/>
</Grid>
</Window>
```
至此,我们就完成了在C#中使用OPCUA通讯,绑定KEPserverEX6的节点浏览目录到WPF的ListBox上的操作。
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