Question

我正在使用此代码检查backgroundimage：

 if (actionbox1.BackgroundImage == "WaterforMGC.strollinstu.png")

但是我收到错误操作符'=='不能应用于'System.Drawing.Image'和'string'类型的操作数

那么如何查看BackgroundImage属性？

以防万一，这是我的随机代码：

        //actionbox1
        var imageNames = new List<string> { "WaterforMGC.strollinstu.png", "WaterforMGC.blank.png", "WaterforMGC.swoopinstu.png", "WaterforMGC.waterbottle.png", "WaterforMGC.goop.png", "WaterforMGC.blank.png" };
        var rand = new Random();
        var index = rand.Next(0, imageNames.Count - 1);
        var s = this.GetType().Assembly.GetManifestResourceStream(imageNames[index]);
        actionbox1.BackgroundImage = Image.FromStream(s);

Answer 1

一个解决方案可能只是首先加载，在您的示例中，WaterforMGC.strollinstu.png 将文件分配到System.Drawing.Image对象，然后将其分配给actionbox1.BackgroundImage。

当你想知道确切的图像时，应该足以检查两个对象之间的相等性（实际上会调用GetHashCode()）

示例：

   //somewhere in the code 
   Image img1 = Image.FromFile(@".\.\....\\.\WaterforMGC.strollinstu1.png"); 
   Image img2 = Image.FromFile(@".\.\....\\.\WaterforMGC.strollinstu2.png");

   //assign to back image IMG1
   actionbox1.BackgroundImage = img1;



  //when comes moment to check whcih image is assigned (base on your app logic) 
  if(actionbox1.BackgroundImage == img1) 
  {
     //do somethinmg here, based on your logic
  }
  else if(actionbox1.BackgroundImage == img2) 
  {
     //do somethinmg other, based on your logic
  }

希望这有帮助。

问候。

帮助检查BackgroundImage

1 个答案: