跟踪栏以增加listview中图像的大小 [英] Track bar to increase the size of image in listview

问题描述

hi


我正在使用带有图像的listview来显示图像，现在我想使用trackbar来增加或减少listview中图像的大小，

hi
I am using listview with images to display images, now i want to trackbar to increase or reduce the size of images in listview,

private void trackBar1_Scroll(object sender, EventArgs e)
      {
          setZoom();
      }

      private void setZoom()
      {
          int newZoom = zoomFactor[zoomBar.Value];
          imageList1.ImageSize = new System.Drawing.Size(newZoom, newZoom);

          listView1.LargeImageList = imageList1;

}



im使用此增加图像的大小

它的工作但缩略图得到改变。

}

i m using this for increasing the size of image
its work but the thumbnail get changes.

推荐答案

你可以有一个足够大的图像（以像素为单位）并将其缩小到所需的大小。这不是一个简单的程序，称为重新采样。



这是如何做的秘诀：

http://stackoverflow.com/questions/249587/high-quality-image- scale-c-sharp [ ^ ]。



一般情况下，如果缩小图像，而不是向上，可以重新对图像进行重新采样。我建议你避免扩大它的可能性;或允许一些重新采样，不是很温和，否则它看起来真的很难看。

-SA

You can have an image which is big enough (in pixels) and scale it down to required size. This is not a trivial procedure called re-sampling.

This is the recipe on how to do it:
http://stackoverflow.com/questions/249587/high-quality-image-scaling-c-sharp[^].

Generally, you can re-sample the image with decent quality if you scale it down, not up. I would recommend you to avoid the possibility of scaling it up; or allow some re-sampling up, not very moderate, otherwise it will look really ugly.

—SA

你能帮我写一下函数zoomFactor吗？

Can you help me write the function zoomFactor?

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