Visual Studio 2010 Chart control: Make Y Axis an Integer value, not decimal

I like the way that the chart control seems to automatically determine the X axis range for me based on the data, but in this case, the data can only be whole numbers.

What is the easiest way to specify who开发者_如何转开发le numbers for this axis?

Looks like you can do this by setting the YValueType property on any relevant series to an integer type - for example:

Chart.Series[0].YValueType = ChartValueType.Int32;

    chartClicks.ChartAreas(0).AxisY.IntervalOffsetType = DateTimeIntervalType.Number

It isn't working for very small amounts (1-5 clicks). I have solved that like this:

Dictionary<string, int> clicks = new Dictionary<string, int>();
for (int i = 0; i < 24; i++)
{
    clicks.Add(string.Format("{0:00}:00", i), 0);
}

foreach (DateTime dateTime in rawClicks)
{
    clicks[string.Format("{0:00}:00", dateTime.Hour)]++;
}

Chart chart = new Chart();    
chart.ChartAreas.Add("Default");

Axis x = chart.ChartAreas["Default"].AxisX;
Axis y = chart.ChartAreas["Default"].AxisY;

x.Interval = 1;
x.IntervalType = DateTimeIntervalType.Auto;

chart.Series.Add("Default");
chart.Series["Default"]["PixelPointWidth"] = "15";

int maxNumberOfClicks = 0;

for (int i = 0; i < 24; i++)
{
    string key = string.Format("{0:00}:00", i);
    chart.Series["Default"].Points.AddXY(key, clicks[key]);

    if (maxNumberOfClicks < clicks[key])
    {
        maxNumberOfClicks = clicks[key];
    }
}

y.Interval = Math.Ceiling((double)maxNumberOfClicks / (double)7);
if (y.Interval == 0)
{
    y.Interval = 1;
}

<ChartAreas>
    <asp:ChartArea Name="Default">
        <AxisY Interval="1" IntervalType="Number"></AxisY>
    </asp:ChartArea>
</ChartAreas>