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OpCodes.Ldelem Field

Loads the element at a specified array index onto the top of the evaluation stack as the type specified in the instruction.

Namespace: System.Reflection.Emit
Assembly: mscorlib (in mscorlib.dll)

public static readonly OpCode Ldelem
public static final OpCode Ldelem
public static final var Ldelem : OpCode
Not applicable.

The following table lists the instruction's hexadecimal and Microsoft intermediate language (MSIL) assembly format, along with a brief reference summary:

Format

Assembly Format

Description

A3 < T >

ldelem typeTok

Loads the element at index onto the top of the stack as type typeTok.

The stack transitional behavior, in sequential order, is:

  1. An object reference array is pushed onto the stack.

  2. An index value index is pushed onto the stack.

  3. index and array are popped from the stack; the value stored at position index in array is looked up.

  4. The value is pushed onto the stack.

The ldelem instruction loads the value of the element with index index (type native int) in the zero-based one-dimensional array array and places it on the top of the stack. Arrays are objects, and hence represented by a value of type O.

The type of the return value is specified by the token typeTok in the instruction.

NullReferenceException is thrown if array is a null reference.

IndexOutOfRangeException is thrown if index is negative, or larger than the upper bound of array.

The following Emit method overload can use the ldelem opcode:

  • ILGenerator.Emit(OpCode, Type)

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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