如何设置Bitmap.Width和Bitmap.height [英] How to set Bitmap.Width and Bitmap.height

问题描述

您好我已经加载了位图，我需要设置自己的高度和宽度，

Hi i have loaded a bitmap and i need to set my own height and width ,

bitmap.height = 100;

但是这句话不允许我，因为它说

but this statement doesn't allow me because it says that

'System.Drawing.Image.Width' cannot be assigned to -- it is read only

重新调整位图大小的方法是什么？或者分配这些参数？

whats the method to re-size the bitmap? or assign these parameters ?

推荐答案

另一个问题确实可以为您提供一些代码。但你可能想要一个解释。

The other question will indeed help you by giving you some code. But you may want an explanation.

你不能分配尺寸，因为它没有任何意义 - 一旦加载了图像数据，改变尺寸就会需要重新排列数据，插入或删除像素数据的部分。简单的大小分配没有足够的信息来为您正确地执行此操作。

You can't assign to the dimensions because it wouldn't make any sense - once the image data is loaded, changing the size would require rearranging the data, inserting or removing sections of pixel data. A simple size assignment wouldn't have enough information to do this properly for you.

更改图像大小的正确方法是创建一个新的，并且然后将旧图像绘制到其上。为此，请参阅已引用的其他问题。

The proper way to change the size of an image is to create a new one, and then draw the old image onto it. For that, see the other questions that have been referenced.

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