如果您正苦于以下问题:C# Expression.AddAssign方法的具体用法?C# Expression.AddAssign怎么用?C# Expression.AddAssign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.AddAssign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:
// Add the following directive to your file:
// using System.Linq.Expressions;
// The Parameter expression is used to create a variable.
ParameterExpression variableExpr = Expression.Variable(typeof(int), "sampleVar");
// The block expression enables you to execute several expressions sequentually.
// In this bloc, the variable is first initialized with 1.
// Then the AddAssign method adds 2 to the variable and assigns the result to the variable.
BlockExpression addAssignExpr = Expression.Block(
new ParameterExpression[] { variableExpr },
Expression.Assign(variableExpr, Expression.Constant(1)),
Expression.AddAssign(
variableExpr,
Expression.Constant(2)
)
);
// Print out the expression from the block expression.
Console.WriteLine("The expressions from the block expression:");
foreach (var expr in addAssignExpr.Expressions)
Console.WriteLine(expr.ToString());
Console.WriteLine("The result of executing the expression tree:");
// The following statement first creates an expression tree,
// then compiles it, and then executes it.
Console.WriteLine(Expression.Lambda<Func<int>>(addAssignExpr).Compile()());
输出:
The expressions from the block expression: (sampleVar = 1) (sampleVar += 2) The result of executing the expression tree: 3