本文整理匯總了C#中System.Linq.Expressions.Expression.Constant方法的典型用法代碼示例。如果您正苦於以下問題:C# Expression.Constant方法的具體用法?C# Expression.Constant怎麽用?C# Expression.Constant使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Linq.Expressions.Expression
的用法示例。
在下文中一共展示了Expression.Constant方法的2個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的C#代碼示例。
示例1:
// Add the following directive to your file:
// using System.Linq.Expressions;
// This expression represents a Constant value.
Expression constantExpr = Expression.Constant(5.5);
// Print out the expression.
Console.WriteLine(constantExpr.ToString());
// You can also use variables.
double num = 3.5;
constantExpr = Expression.Constant(num);
Console.WriteLine(constantExpr.ToString());
輸出:
5.5 3.5
示例2: typeof
// Add the following directive to your file:
// using System.Linq.Expressions;
// This expression represents a constant value,
// for which you can explicitly specify the type.
// This can be used, for example, for defining constants of a nullable type.
Expression constantExpr = Expression.Constant(
null,
typeof(double?)
);
// Print out the expression.
Console.WriteLine(constantExpr.ToString());
輸出:
null