OpCodes.Brtrue Field
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Transfers control to a target instruction if value is true, not null, or non-zero.
Namespace: System.Reflection.Emit
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Shared ReadOnly Brtrue As OpCode
public static readonly OpCode Brtrue
Remarks
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 |
|---|---|---|
3A < int32 > |
brtrue target brinst target |
Branch to a target instruction at the specified offset if non-zero (true). |
The stack transitional behavior, in sequential order, is:
value is pushed onto the stack by a previous operation.
value is popped from the stack; if value is true, branch to target.
The brtrue instruction transfers control to the specified target instruction if value (type native int) is nonzero (true). If value is zero (false) execution continues at the next instruction.
If value is an object reference (type O) then brinst (an alias for brtrue) transfers control if it represents an instance of an object (for example, if it is not the null object reference; see Ldnull).
The target instruction is represented as a 4-byte signed offset from the beginning of the instruction following the current instruction.
Control can only be transferred to the first of these prefixes if the target instruction has one or more prefix codes. Control transfers into and out of try, catch, filter, and finally blocks cannot be performed by this instruction.
The following Emit method overload can use the brtrue opcode:
- ILGenerator.Emit(OpCode, Label)
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.