c# - How to implement a graphical 3-Way "Switch" -


i'm trying build 3-way "switch" in winforms project.

it sends 1 command 3 "settings", should alternate between 3 different background images each time user clicks on button. i've implemented 2-way toggle switch project using checkbox it's appearance set "button", don't believe method work 3-way switch.

here code i've tried, doesn't seem when button clicked:

    private void threewaybutton_click(object sender, eventargs e)     {         if (threewaybutton.backgroundimage.equals(properties.resources.threeway_1))         {             threewaybutton.backgroundimage = properties.resources.threeway_2;         }         else if (threewaybutton.backgroundimage.equals(properties.resources.threeway_2))         {             threewaybutton.backgroundimage = properties.resources.threeway_3;         }         else if (threewaybutton.backgroundimage.equals(properties.resources.threeway_3))         {             threewaybutton.backgroundimage = properties.resources.threeway_1;         }     }

another method tried using switch:

static int switch_state = 0;  //...      protected void threewaybutton_click(object sender, eventargs e)     {         switch_state++;         switch (switch_state)         {             case 1:                 threewaybutton.backgroundimage = properties.resources.threeway_2;                 break;             case 2:                 threewaybutton.backgroundimage = properties.resources.threeway_3;                 break;             case 3:                 threewaybutton.backgroundimage = properties.resources.threeway_1;                 break;             default:                 break;         }     }

this method kind of works; cycles through 3 images, once gets last one, doesn't cycle through images again.

if second method appropriate 1 use, i'd revert case 1 after user clicks on button when switch_state case 3

it should cycle between 3 images each time user clicks button, no matter how many times button has been clicked.

your second approach one, need add:

if(switch_state > 3)     switch_state = 1;

just after switch_state++, else continue incrementing doing nothing.


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