# DateTimeCodec Methods

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

## ReadValue(Reader<TInput>, Field) {#readvalue-1-ref-orleans-serialization-buffers-reader-tinput-orleans-serializatio-f7e6487d}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.datetimecodec/methods/readvalue-1-ref-orleans-serialization-buffers-reader-tinput-orleans-serializatio-f7e6487d/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Codecs/DateTimeCodec.cs#L45-L47)

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

Reads a `System.DateTime` value.

### Parameters

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

### Returns

The `System.DateTime` value.

## WriteField(Writer&lt;TBufferWriter&gt;, uint, DateTime) {#writefield-1-ref-orleans-serialization-buffers-writer-tbufferwriter-uint-system-59f3cd13}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.datetimecodec/methods/writefield-1-ref-orleans-serialization-buffers-writer-tbufferwriter-uint-system-59f3cd13/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Codecs/DateTimeCodec.cs#L28-L31)

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

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

### Parameters

- `writer` (`Writer<TBufferWriter>`)
- `fieldIdDelta` (`uint`)
- `value` (`DateTime`)