# Int64Codec Methods

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.int64codec/)

## ReadValue(Reader<TInput>, Field) {#readvalue-1-ref-orleans-serialization-buffers-reader-tinput-orleans-serializatio-f938b938}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.int64codec/methods/readvalue-1-ref-orleans-serialization-buffers-reader-tinput-orleans-serializatio-f938b938/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Codecs/IntegerCodec.cs#L570-L571)

```csharp
public static long ReadValue<TInput>(ref Reader<TInput> reader, Field field)
```

Reads a value.

### Parameters

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

### Returns

The value.

## WriteField(Writer&lt;TBufferWriter&gt;, uint, Type, long, Type) {#writefield-1-ref-orleans-serialization-buffers-writer-tbufferwriter-uint-system-b23c0ef4}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.int64codec/methods/writefield-1-ref-orleans-serialization-buffers-writer-tbufferwriter-uint-system-b23c0ef4/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Codecs/IntegerCodec.cs#L542-L555)

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

Writes a field.

### Parameters

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

## WriteField(Writer&lt;TBufferWriter&gt;, uint, long) {#writefield-1-ref-orleans-serialization-buffers-writer-tbufferwriter-uint-long-d7b9c254}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.int64codec/methods/writefield-1-ref-orleans-serialization-buffers-writer-tbufferwriter-uint-long-d7b9c254/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Codecs/IntegerCodec.cs#L516-L529)

```csharp
public static void WriteField<TBufferWriter>(ref Writer<TBufferWriter> writer, uint fieldIdDelta, long value)
```

Writes a field without type info (expected type is statically known).

### Parameters

- `writer` (`Writer<TBufferWriter>`): The writer.
- `fieldIdDelta` (`uint`): The field identifier delta.
- `value` (`long`): The value.