幫助檢查的BackgroundImage

Question

我使用此代碼來檢查背景圖片：

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

但我得到的錯誤操作符「==」不能應用於類型「爲System.Drawing.Image」和「字符串操作數'

那麼如何檢查BackgroundImage屬性？

以防萬一，這裏是我的隨機化代碼：

 //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

一種解決方案可能是簡單的第一負載，如下因素的例子，WaterforMGC.strollinstu.png 文件到System.Drawing.Image對象，之後將其分配給actionbox1.BackgroundImage。

在當你wnat找出確切的圖像的那一刻，應該是足夠的檢查

例兩個物體之間的平等（這實際上將調用GetHashCode()）：

//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 
    } 

希望這有助於。

問候。