如果您正苦于以下问题:C# Expression.Goto方法的具体用法?C# Expression.Goto怎么用?C# Expression.Goto使用的例子?那么, 这里精选的代码示例或许能为您提供帮助。
以下是System.Linq.Expressions.Expression
类Expression.Goto方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为感觉有用的代码点赞,您的评价将有助于系统推荐出更好的C#代码示例。
示例1: typeof
// Add the following directive to your file:
// using System.Linq.Expressions;
// A label expression of the void type that is the target for the GotoExpression.
LabelTarget returnTarget = Expression.Label();
// This block contains a GotoExpression.
// It transfers execution to a label expression that is initialized with the same LabelTarget as the GotoExpression.
// The types of the GotoExpression, label expression, and LabelTarget must match.
BlockExpression blockExpr =
Expression.Block(
Expression.Call(typeof(Console).GetMethod("WriteLine", new Type[] { typeof(string) }), Expression.Constant("GoTo")),
Expression.Goto(returnTarget),
Expression.Call(typeof(Console).GetMethod("WriteLine", new Type[] { typeof(string) }), Expression.Constant("Other Work")),
Expression.Label(returnTarget)
);
// The following statement first creates an expression tree,
// then compiles it, and then runs it.
Expression.Lambda<Action>(blockExpr).Compile()();
输出:
GoTo "Other Work" is not printed because the GoTo expression transfers execution from Expression.GoTo(returnTarget) to Expression.Label(returnTarget).