Marks the Microsoft intermediate language (MSIL) stream's current position with the given label.
Assembly: mscorlib (in mscorlib.dll)
loc represents an invalid index into the label array.
An index for loc has already been defined.
The following example demonstrates the use of MarkLabel to establish the location of a label that was defined earlier. Notice that the label is used in a call to the Emit(OpCode, Label) method overload before its location has been established.
This code is part of a larger example provided for the BeginExceptionBlock method.
adderIL.BeginFinallyBlock(); // The finally block block displays a message on the TextBlock, if the // OutputBlock field has been set. Just as in the catch block, the following // code tests whether the TextBlock is present, and skips the output if it is // not present. adderIL.Emit(OpCodes.Ldsfld, demoOutput); adderIL.Emit(OpCodes.Ldnull); adderIL.Emit(OpCodes.Ceq); adderIL.Emit(OpCodes.Brtrue_S, skipOutputInFinally); // Append a constant string to the Text property of the TextBlock. adderIL.Emit(OpCodes.Ldsfld, demoOutput); adderIL.Emit(OpCodes.Ldsfld, demoOutput); adderIL.Emit(OpCodes.Callvirt, getter); adderIL.Emit(OpCodes.Ldstr, "Executing the finally block.\n"); adderIL.Emit(OpCodes.Call, concat2); adderIL.Emit(OpCodes.Callvirt, setter); adderIL.MarkLabel(skipOutputInFinally); // This is the end of the try/catch/finally block. adderIL.EndExceptionBlock();
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.