Question

我目前正在使用以下代码将图片加载到图片框中。

pictureBox1.Image = Properties.Resources.Desert;

我会用“变量”替换“沙漠”，因为代码的工作原理如下。

String Image_Name;
Imgage_Name = "Desert";
pictureBox1.Image = Properties.Resources.Image_Name;

我有很多想象，我需要加载并想要使用变量作为图像名称，而不必为每个图像写一个单独的行。这可能吗？

Answer 1

你可以遍历资源......就像这样：

using System.Collections;

string image_name = "Desert";

foreach (DictionaryEntry kvp in Properties.Resources.ResourceManager.GetResourceSet(CultureInfo.CurrentCulture, true, true)) {
    if ((string)kvp.Key == image_name) {
        var bmp = kvp.Value as Bitmap;
        if (bmp != null) {
            // bmp is your image
        }
    }
}

你可以将它包装在一个很好的小函数中......就像这样：

public Bitmap getResourceBitmapWithName(string image_name) {
    foreach (DictionaryEntry kvp in Properties.Resources.ResourceManager.GetResourceSet(CultureInfo.CurrentCulture, true, true)) {
        if ((string)kvp.Key == image_name) {
            var bmp = kvp.Value as Bitmap;
            if (bmp != null) {
                return bmp;
            }
        }
    }

    return null;
}

用法：

var resourceBitmap = getResourceBitmapWithName("Desert");
if (resourceBitmap != null) {
    pictureBox1.Image = resourceBitmap;
}

Answer 2

检查出来：Programatically using a string as object name when instantiating an object。默认情况下，C＃不允许您这样做。但您仍然可以使用string从Dictionary访问所需的图片。

您可以尝试这样的事情：

Dictionary<string, Image> nameAndImg = new Dictionary<string, Image>()
{
    {"pic1",  Properties.Resources.pic1},
    {"pic2",  Properties.Resources.pic2}
    //and so on...
};

private void button1_Click(object sender, EventArgs e)
{
    string name = textBox1.Text;

    if (nameAndImg.ContainsKey(name))
        pictureBox1.Image = nameAndImg[name];

    else
        MessageBox.Show("Inavlid picture name");
}

在Visual Studio中使用PictureBox

2 个答案: