本文整理汇总了C#中System.Linq.Expressions.Expression.AddAssign方法的典型用法代码示例。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？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Linq.Expressions.Expression的用法示例。
在下文中一共展示了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。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的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