计数器在回发时损失价值

问题描述

我正在为我的照片创建一个简单的画廊.我是asp.net的新手.
每当我单击下一个照片按钮时，计数器在回发时都会丢失值，并保留在同一张图像上.
我如何制作一个不会失去价值的柜台?还是我有其他方法可以做到这一点?
请用简单的英语解释，记住我是新手.谢谢.

Hi, I''m creating a simple gallery for my photos. I''m quite new to asp.net.
Whenever I click on the next photo button, the counter loses value on the postback and remains on the same image.
How can I make a counter that doesn''t lose value? Or is there any other way I can do this at all?
Please explain in simple English, remember I''m new to this. thanks.

int counter = 0;
protected void ImageButton2_Click(object sender, ImageClickEventArgs e)
       {
           counter++;
           ImageGallery.ImageUrl = "~/Images/" + counter.ToString() + ".jpg";

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