# OpcBrowseRequest Members

> Reference: Represents the request of the Browse service of OPC UA, which retrieves the references of nodes.

<dl class="api-definition">
<dt>Type</dt>
<dd><a href="./">OpcBrowseRequest</a></dd>
<dt>Namespace</dt>
<dd><a href="../namespaces/opc.uafx.services">Opc.UaFx.Services</a></dd>
<dt>Assembly</dt>
<dd>Opc.UaFx.Advanced.dll</dd>
<dt>Package</dt>
<dd>Opc.UaFx.Advanced v2.59.0</dd>
<dt>Also in</dt>
<dd>Opc.UaFx.Client</dd>
</dl>

Inherits members from [OpcServiceRequest&lt;OpcBrowseNode, OpcBrowseNodeCollection&gt;](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcservicerequest-2/members), [OpcServiceRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcservicerequest/members).

## Constructors

### OpcBrowseRequest

<span class="api-meta">6 overloads · since v2.9</span>

| Overload | Description |
|---|---|
| [OpcBrowseRequest(IEnumerable&lt;OpcBrowseNode&gt;)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/members#opcbrowserequest-system-collections-generic-ienumerable-of-opc-uafx-opcbrowsenode)<span class="api-meta">since v2.9</span> | Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `commands` and a new header. |
| [OpcBrowseRequest(params OpcBrowseNode\[\])](#opcbrowserequest-opc-uafx-opcbrowsenode-array)<span class="api-meta">since v2.9</span> | Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `commands` and a new header. |
| [OpcBrowseRequest(OpcViewDescription, IEnumerable&lt;OpcBrowseNode&gt;)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/members#opcbrowserequest-opc-uafx-opcviewdescription-system-collections-generic-ienumerable-of-opc-uafx-opcbrowsenode)<span class="api-meta">since v2.9</span> | Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `view` and `commands` and a new header. |
| [OpcBrowseRequest(OpcViewDescription, params OpcBrowseNode\[\])](#opcbrowserequest-opc-uafx-opcviewdescription-opc-uafx-opcbrowsenode-array)<span class="api-meta">since v2.9</span> | Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `view` and `commands` and a new header. |
| [OpcBrowseRequest(IOpcServiceRequestHeader, OpcViewDescription, IEnumerable&lt;OpcBrowseNode&gt;)](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/members#opcbrowserequest-opc-uafx-services-iopcservicerequestheader-opc-uafx-opcviewdescription-system-collections-generic-ienumerable-of-opc-uafx-opcbrowsenode)<span class="api-meta">since v2.9</span> | Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `header`, `view` and `commands`. |
| [OpcBrowseRequest(IOpcServiceRequestHeader, OpcViewDescription, params OpcBrowseNode\[\])](#opcbrowserequest-opc-uafx-services-iopcservicerequestheader-opc-uafx-opcviewdescription-opc-uafx-opcbrowsenode-array)<span class="api-meta">since v2.9</span> | Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `header`, `view` and `commands`. |

#### OpcBrowseRequest(IEnumerable&lt;OpcBrowseNode&gt;)

<span class="api-meta">since v2.9</span>

Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `commands` and a new header.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcBrowseRequest(IEnumerable<OpcBrowseNode> commands)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Sub New(commands As IEnumerable(Of OpcBrowseNode))
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `commands` | [IEnumerable](https://learn.microsoft.com/dotnet/api/system.collections.generic.ienumerable-1)&lt;[OpcBrowseNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcbrowsenode/)&gt; | The commands which specify the nodes and references to browse. |

**Exceptions**

| Exception | Condition |
|---|---|
| [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `commands` is a null reference (Nothing in Visual Basic). |

#### OpcBrowseRequest(params OpcBrowseNode\[\])

<span class="api-meta">since v2.9</span>

Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `commands` and a new header.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcBrowseRequest(params OpcBrowseNode[] commands)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Sub New(ParamArray commands As OpcBrowseNode())
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `commands` | params [OpcBrowseNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcbrowsenode/)[] | The commands which specify the nodes and references to browse. |

**Exceptions**

| Exception | Condition |
|---|---|
| [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `commands` is a null reference (Nothing in Visual Basic). |

#### OpcBrowseRequest(OpcViewDescription, IEnumerable&lt;OpcBrowseNode&gt;)

<span class="api-meta">since v2.9</span>

Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `view` and `commands` and a new header.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcBrowseRequest(
    OpcViewDescription view,
    IEnumerable<OpcBrowseNode> commands)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Sub New(
    view As OpcViewDescription,
    commands As IEnumerable(Of OpcBrowseNode))
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `view` | [OpcViewDescription](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcviewdescription/) | The view to browse, or a null reference (Nothing in Visual Basic) for none. |
| `commands` | [IEnumerable](https://learn.microsoft.com/dotnet/api/system.collections.generic.ienumerable-1)&lt;[OpcBrowseNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcbrowsenode/)&gt; | The commands which specify the nodes and references to browse. |

**Exceptions**

| Exception | Condition |
|---|---|
| [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `commands` is a null reference (Nothing in Visual Basic). |

#### OpcBrowseRequest(OpcViewDescription, params OpcBrowseNode\[\])

<span class="api-meta">since v2.9</span>

Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `view` and `commands` and a new header.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcBrowseRequest(
    OpcViewDescription view,
    params OpcBrowseNode[] commands)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Sub New(
    view As OpcViewDescription,
    ParamArray commands As OpcBrowseNode())
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `view` | [OpcViewDescription](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcviewdescription/) | The view to browse, or a null reference (Nothing in Visual Basic) for none. |
| `commands` | params [OpcBrowseNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcbrowsenode/)[] | The commands which specify the nodes and references to browse. |

**Exceptions**

| Exception | Condition |
|---|---|
| [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `commands` is a null reference (Nothing in Visual Basic). |

#### OpcBrowseRequest(IOpcServiceRequestHeader, OpcViewDescription, IEnumerable&lt;OpcBrowseNode&gt;)

<span class="api-meta">since v2.9</span>

Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `header`, `view` and `commands`.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcBrowseRequest(
    IOpcServiceRequestHeader header,
    OpcViewDescription view,
    IEnumerable<OpcBrowseNode> commands)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Sub New(
    header As IOpcServiceRequestHeader,
    view As OpcViewDescription,
    commands As IEnumerable(Of OpcBrowseNode))
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `header` | [IOpcServiceRequestHeader](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.iopcservicerequestheader/) | The header of the request. |
| `view` | [OpcViewDescription](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcviewdescription/) | The view to browse, or a null reference (Nothing in Visual Basic) for none. |
| `commands` | [IEnumerable](https://learn.microsoft.com/dotnet/api/system.collections.generic.ienumerable-1)&lt;[OpcBrowseNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcbrowsenode/)&gt; | The commands which specify the nodes and references to browse. |

**Exceptions**

| Exception | Condition |
|---|---|
| [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `header` or the `commands` is a null reference (Nothing in Visual Basic). |

#### OpcBrowseRequest(IOpcServiceRequestHeader, OpcViewDescription, params OpcBrowseNode\[\])

<span class="api-meta">since v2.9</span>

Initializes a new instance of the [OpcBrowseRequest](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.opcbrowserequest/) class using the specified `header`, `view` and `commands`.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcBrowseRequest(
    IOpcServiceRequestHeader header,
    OpcViewDescription view,
    params OpcBrowseNode[] commands)
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Sub New(
    header As IOpcServiceRequestHeader,
    view As OpcViewDescription,
    ParamArray commands As OpcBrowseNode())
```

</div>

**Parameters**

| Name | Type | Description |
|---|---|---|
| `header` | [IOpcServiceRequestHeader](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.services.iopcservicerequestheader/) | The header of the request. |
| `view` | [OpcViewDescription](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcviewdescription/) | The view to browse, or a null reference (Nothing in Visual Basic) for none. |
| `commands` | params [OpcBrowseNode](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcbrowsenode/)[] | The commands which specify the nodes and references to browse. |

**Exceptions**

| Exception | Condition |
|---|---|
| [ArgumentNullException](https://learn.microsoft.com/dotnet/api/system.argumentnullexception) | The `header` or the `commands` is a null reference (Nothing in Visual Basic). |

## Properties

### RequestedMaxReferencesPerNode

Gets or sets the maximum number of references a server is to return for each node browsed.

<div class="api-signature" data-lang="csharp">

```csharp
public uint RequestedMaxReferencesPerNode { get; set; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Property RequestedMaxReferencesPerNode As UInteger
```

</div>

**Property value**

[UInt32](https://learn.microsoft.com/dotnet/api/system.uint32)

The maximum number of references for each node, or 0 for no limit; the default value is 0.

### View

Gets or sets the view to browse.

<div class="api-signature" data-lang="csharp">

```csharp
public OpcViewDescription View { get; set; }
```

</div>

<div class="api-signature" data-lang="vbnet">

```vbnet
Public Property View As OpcViewDescription
```

</div>

**Property value**

[OpcViewDescription](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcviewdescription/)

The [OpcViewDescription](https://www.traeger.de/en/docs/development/opcua/api/v2.59/opc.uafx.opcviewdescription/) of the view to browse, or a null reference (Nothing in Visual Basic) if none has been specified.