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searies.IsValueShownAsLabel = true;
IEnumerable<DataPoint> dp = searies.Points.FindAllByValue(0);
foreach (var p in dp)
{
p.IsValueShownAsLabel = false;
}
if (dt.Rows[i][j * 2 + 3].ToString() != "0")
{
Chart1.Series[j].Points.AddY(dt.Rows[i][j * 2 + 3].ToString());
Chart1.Series[j].IsValueShownAsLabel = true;
}
else
{
Chart1.Series[j].Points.AddY(0);
Chart1.Series[j].IsValueShownAsLabel = false;
}