Reinitialise method

[scb147]

When does the Reinitialise method get called? I have an image contained within a Hashtable, but I cannot get the updated image to appear. It will initially display, but an update will just blank it out.

Does the Reinitialise method come into this or how else does one do this when the image is in a Hashtable?

[McBainUK]

Take a look at IMenuTask:needsRendering

[scb147]

I believe it is rendering, it's just not updating.

I have other screens which update the image, but I am directly changing the image in the hashtable:

Code:

Image currentIcon = Image.FromFile(iconPath + current.icon + ".png", true);
myHashTable["@image"] = currentIcon;

But the image that isn't updating is contained in a List of Hashtables. I was hoping to change the screen (blue/yellow buttons) and have the next Hashtable in the list appear. But I can't seem to get the UiElement to update.

I am using the WizUtilities and I have tried the .forceRefresh() method on the element, but it doesn't seem to help.

Do I possible need to dispose() to old element and create a new one with the new hashtable?

[whurlston]

This was discussed previously as an "Oh by the way..." in some thread but I can't remember where. Add a text field to the hashtable and change the value whenever you update the image. DateTime.Now works well if you are doing multiple updates to the image.

Code:

Image currentIcon = Image.FromFile(iconPath + current.icon + ".png", true);
myHashTable["@image"] = currentIcon;
myHashTable["@dummytext"] = string.Format("{0}", DateTime.Now);

You can also use the full path of the image for the dummy text if you are not reloading the same file. The dummy text doesn't need to be rendered anywhere, just in the hashtable.

[scb147]

I already have 2 text fields in the Hashtable that are being updated. I've done a printout of the Hashtable contents in the rendering method, and I see that they are changed. Yet, the screen does not update, text or image.

[McBainUK]

Can you post the code? Might be something easy to see with fresh eyes.

[scb147]

Well, once I get rid of the List of Hashtables, the problem disappears. Text and image updates fine.

I guess a List of Hashtables isn't going to work.