# FieldHeaderCodec Methods

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

## ReadFieldHeader(Reader<TInput>) {#readfieldheader-1-this-orleans-serialization-buffers-reader-tinput-3939fece}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.fieldheadercodec/methods/readfieldheader-1-this-orleans-serialization-buffers-reader-tinput-3939fece/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Buffers/Writer.FieldHeader.cs#L124-L138)

```csharp
public static Field ReadFieldHeader<TInput>(this ref Reader<TInput> reader)
```

Reads a field header.

### Parameters

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

### Returns

The field header.

## ReadFieldHeader(Reader&lt;TInput&gt;, Field) {#readfieldheader-1-this-orleans-serialization-buffers-reader-tinput-ref-orleans-s-227c7ec3}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.fieldheadercodec/methods/readfieldheader-1-this-orleans-serialization-buffers-reader-tinput-ref-orleans-s-227c7ec3/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Buffers/Writer.FieldHeader.cs#L101-L113)

```csharp
public static void ReadFieldHeader<TInput>(this ref Reader<TInput> reader, scoped ref Field field)
```

Reads a field header.

### Parameters

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

## ReadFieldHeaderForAnalysis(Reader&lt;TInput&gt;) {#readfieldheaderforanalysis-1-this-orleans-serialization-buffers-reader-tinput-c7503c2b}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.serialization/orleans.serialization.codecs.fieldheadercodec/methods/readfieldheaderforanalysis-1-this-orleans-serialization-buffers-reader-tinput-c7503c2b/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/Buffers/Writer.FieldHeader.cs#L229-L244)

```csharp
public static (this Field Field, string Type) FieldHeaderCodec.ReadFieldHeaderForAnalysis<TInput>(ref Reader<TInput> reader)
```

Reads a field header for diagnostic purposes.

### Parameters

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

### Returns

The value which was read.