# Codec_IdSpan Methods

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleanscodegen.orleans.runtime.codec-idspan/)

## Deserialize(Reader<TReaderInput>, IdSpan) {#deserialize-1-ref-orleans-serialization-buffers-reader-treaderinput-ref-orleans-b0be50dc}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleanscodegen.orleans.runtime.codec-idspan/methods/deserialize-1-ref-orleans-serialization-buffers-reader-treaderinput-ref-orleans-b0be50dc/)

```csharp
public void Deserialize<TReaderInput>(ref Reader<TReaderInput> reader, scoped ref IdSpan instance)
```

Deserializes the specified type.

### Parameters

- `reader` (`Reader<TReaderInput>`): The reader.
- `instance` (`IdSpan`): The value.

## ReadValue(Reader&lt;TReaderInput&gt;, Field) {#readvalue-1-ref-orleans-serialization-buffers-reader-treaderinput-orleans-serial-81c81750}

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```csharp
public IdSpan ReadValue<TReaderInput>(ref Reader<TReaderInput> reader, Field field)
```

Reads a value.

### Parameters

- `reader` (`Reader<TReaderInput>`): The reader.
- `field` (`Field`): The field.

### Returns

The value.

## Serialize(Writer&lt;TBufferWriter&gt;, IdSpan) {#serialize-1-ref-orleans-serialization-buffers-writer-tbufferwriter-ref-orleans-r-2af2b111}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleanscodegen.orleans.runtime.codec-idspan/methods/serialize-1-ref-orleans-serialization-buffers-writer-tbufferwriter-ref-orleans-r-2af2b111/)

```csharp
public void Serialize<TBufferWriter>(ref Writer<TBufferWriter> writer, scoped ref IdSpan instance)
```

Serializes the provided value.

### Parameters

- `writer` (`Writer<TBufferWriter>`): The writer.
- `instance` (`IdSpan`): The value.

## WriteField(Writer&lt;TBufferWriter&gt;, uint, Type, IdSpan) {#writefield-1-ref-orleans-serialization-buffers-writer-tbufferwriter-uint-system-77489e7e}

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```csharp
public void WriteField<TBufferWriter>(ref Writer<TBufferWriter> writer, uint fieldIdDelta, Type expectedType, IdSpan value)
```

Writes a field.

### Parameters

- `writer` (`Writer<TBufferWriter>`): The writer.
- `fieldIdDelta` (`uint`): The field identifier delta.
- `expectedType` (`Type`): The expected type.
- `value` (`IdSpan`): The value.