---
id: object/codeunit/3032
type: object
title: Codeunit 3032 "DotNet_BinaryReader"
summary: Codeunit 3032 "DotNet_BinaryReader" in Base Application (System.IO). 19 public procedures. Present since at least BC23, still in BC30, changed in BC28.
tier: official
language: en
tags:
  - codeunit
  - base application
versions:
  introduced: null
  last_changed: "28"
  deprecated: null
review:
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generated:
  at: "2026-10-11T00:31:51.816Z"
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evidence:
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    url: https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Modules/System/DotNetWrappers/DotNetBinaryReader.Codeunit.al
    title: src/Layers/W1/BaseApp/Modules/System/DotNetWrappers/DotNetBinaryReader.Codeunit.al (releases/29.x)
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object_type: codeunit
object_id: 3032
name: DotNet_BinaryReader
namespace: System.IO
app: Base Application
extends: null
first_version: "23"
last_version: "30"
present_in:
  - "23"
  - "24"
  - "25"
  - "26"
  - "27"
  - "28"
  - "29"
  - "30"
changed_in:
  - "28"
source_major: "29"
obsolete: null
countries: []
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counts:
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  procedures: 19
  events: 0
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  calls: 3
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---

# Codeunit 3032 "DotNet_BinaryReader"

> Codeunit 3032 "DotNet_BinaryReader" in Base Application (System.IO). 19 public procedures. Present since at least BC23, still in BC30, changed in BC28.

Base Application · System.IO · BC23-30 · [source at ea08af5e](https://github.com/microsoft/BCApps/blob/ea08af5ef2d6a9b5c5af4a029288abbe2c883220/src/Layers/W1/BaseApp/Modules/System/DotNetWrappers/DotNetBinaryReader.Codeunit.al) · facts from BC29

## Procedures

- `BinaryReader(var DotNet_Stream: Codeunit DotNet_Stream)`
- `BinaryReaderWithEncoding(var DotNet_Stream: Codeunit DotNet_Stream; var DotNet_Encoding: Codeunit DotNet_Encoding)`
- `Close()`
- `Dispose()`
- `ReadByte(): Byte`
- `ReadUInt32(): Integer`
- `ReadUInt16(): Integer`
- `ReadInt16(): Integer`
- `ReadInt32(): Integer`
- `ReadBytes(Count: Integer; var DotNet_Array: Codeunit DotNet_Array)`
- `ReadChars(Count: Integer; var DotNet_Array: Codeunit DotNet_Array)`
- `IsDotNetNull(): Boolean`
- `BaseStream(var DotNet_Stream: Codeunit DotNet_Stream)`
- `ReadChar(): Char`
- `ReadString(): Text`
- `ReadBoolean(): Boolean`
- `ReadDecimal(): Decimal`
- `GetBinaryReader(var DotNetBinaryReader2: DotNet BinaryReader)`
- `SetBinaryReader(var DotNetBinaryReader2: DotNet BinaryReader)`

## Triggers

OnRun

## Calls

From the extracted call graph of BC29 (graphify-al on the snapshot checkout): calls whose target is known from a declared type or an `Object::"Name"` argument. Interface dispatch and calls through events are not counted, so the list is not complete.

- [Codeunit 3034 "DotNet_Stream"](../codeunit/3034.md) (3 calls: `BaseStream → SetStream`, `BinaryReader → GetStream`, `BinaryReaderWithEncoding → GetStream`)
- [Codeunit 3000 "DotNet_Array"](../codeunit/3000.md) (2 calls: `ReadBytes → SetArray`, `ReadChars → SetArray`)
- [Codeunit 3026 "DotNet_Encoding"](../codeunit/3026.md) (1 call: `BinaryReaderWithEncoding → GetEncoding`)

## Across versions

- Present in: BC23-30
- Changed (declaration) in: BC28

Source: AL metadata extracted from the code (names, ids, signatures, properties); no code bodies (D10).

## Ask your agent

Procedure bodies are not stored here (D10). The call sections above are our own, per object, from the BC29 call graph. For a procedure body or the calls of one procedure, ask bc-code-atlas (external, by Stefan Maron, MIT; default corpus w1-28), which the bc-observatory plugin connects: `bcatlas_resolve_node(object_type: "codeunit", object_name: "DotNet_BinaryReader")`, then `bcatlas_get_procedure_body` or `bcatlas_get_neighbors` on the returned id.