c# - Enabled the button only if the picturebox have a picture on it -


i want enabled button if picturebox on windows forms have picture on it. otherwise, button remains false.

i tried below code, when picturebox contains picture, button won't enabled @ (the button enabled true default)

if (picturebox1 == null || picturebox1.image == null)             {                 this.button2.enabled = false;             }              else if (picturebox1 != null || picturebox1.image != null)             {                 this.button2.enabled = true;             }  if (picturebox1 == null || picturebox1.backgroundimage == null)             {                 this.button2.enabled = false;             }              else             {                 this.button2.enabled = true;             }

your answer appreciated!

if code executed on load event of form , picturebox empty @ point button disabled. if load image later have execute code again. there no event raised when image loaded should write method purpose:

private void setpictureboximage(image img) {     this.picturebox1.image = img;     this.setbuttonenabledstate(); }  private void setbuttonenabledstate() {     this.button2.enabled = (this.picturebox1.image != null); }

whenever want set or clear image, call first method. can call second method on load event of form well, in case set image in designer, bypass setpictureboximage method.


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