如何在图像按钮上指定图像尺寸 [英] How to specify the Image sizes on Image buttons

问题描述

我有一个中继器，里面有一个图像"按钮.
现在，来自数据库的图像具有不同的尺寸.
我想将所有图像调整为指定的尺寸，例如200x200.
1.如何做到这一点?

Hi,
I have a Repeater inside which I have an Image button.
Now,the images which are coming from the datebase are of varying dimensions.
I want to resize all the images to a specified dimension,200x200 say.
1.How to do that?

推荐答案

您应该简单地设置<asp:repeater xmlns:asp="#unknown"></asp:repeater>中使用的<asp:imagebutton xmlns:asp="#unknown"></asp:imagebutton>属性的Width和Height属性.这应该为图像按钮设置固定大小.

另外，您可以在CodeBehind中设置宽度"和高度"，如下所示:

You should simply set Width and Height property of the <asp:imagebutton xmlns:asp="#unknown"></asp:imagebutton> property that you are using inside the <asp:repeater xmlns:asp="#unknown"></asp:repeater>. This should set a fixed size for the image buttons.

Alternatively, you can set the Width and Height in the CodeBehind as follows:

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
        if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
        {
            ImageButton imgBtn = e.Item.FindControl("Imge1") as ImageButton;
            if (imgBtn != null)
            {
                imgBtn.Width = 200;
                imgBtn.Height = 200;
            }
        }
}

但是，如果要调整从数据库中检索到的实际图像的大小，则需要使用.NET(GDI +)框架中提供的API调整其大小.不过，就性能而言，这将是昂贵的.

However, if you want to resize your actual image that you retrieve from the database, you need to resize it using the API available in .NET (GDI+) framework. That would be expensive in terms of performance though.

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