MSChart Annotation Size

I have an MSChart with annotations, the charting area is sizable so that people using the old school 800x600 can see the chart.

Problem is, when I view my chart under this low resolution, the annotations within it shrink with the chart and begins to cut off the last couple of l开发者_运维百科etters.

For example an annotation with "Hello world" in normal resoultion becomes "Hello W" under the 800x600.

Anyone know how I could set the annotaiton properties so they dont shrink?

I had the same problem, and I haven't been able to find a way to make the annotation fixed size. I did figure out that the annotation dimensions are set as a percentage of the chart (i.e. the reason it's resizing is that Width = 25 actually means 25% of the chart width), so I wrote a little hack to resize the annotation whenever the chart resizes:

var annotation = new RectangleAnnotation() { ... }

chart.Annotations.Add(annotation);

chart.Resize += (sndr, ev) => {
    // Shoot for 60 pixels tall and 130 wide
    // Annotation dimensions are set as a percentage of the chart area
    annotation.Width =  (130d / chart.Width) * 100;
    annotation.Height = (60d / chart.Height) * 100;
};

This is kind of ugly, but it works for me.