在C＃中，为什么我会收到“无法将double转换为float错误”的信息？ [英] In C#, why am i getting "can't cast double to float error"?

问题描述

我有以下代码行：

    float top = shape.Y + (shape.Height / 2.0) - 4.5;

whic失败，并显示错误消息无法强制翻倍浮动。 Shape.Y和shape.height都是float类型。

whic is failing with the error' Can't cast double to float. Shape.Y and shape.height are both type float.

是什么导致此错误，最好是确保top为float（因为我需要

What is causing this error and what is the best was to make sure top is a float (as i need to pass it into another function tha expects a float.

推荐答案

尝试用 f包裹数字，通常 2.0 代表 double 的数字，您可以阅读有关<$ c $的更多信息c> float 此处。

Try to wrap your numbers with f, as normally 2.0 would represent a double number. You can read more about float here.

float top = shape.Y + (shape.Height / 2.0f) - 4.5f;

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