ZedGraph圖表控制元件 X軸顯示時間 C#
private void CreateGraph(ZedGraphControl
zgc)
{
//zgc.Controls.Clear();
GraphPane myPane = zgc.GraphPane;
//新增新的控制元件前先將面板上已經存在的控制元件清除。
myPane.CurveList.Clear();
myPane.GraphObjList.Clear();
// Set the titles and axis labels
myPane.Title.Text = "指數趨勢";
myPane.XAxis.Title.Text = "序號";
myPane.YAxis.Title.Text = "指數";
DateTime dt;
String[] szx = new String[dataGridView3.RowCount];//X軸的日期陣列
Double[] szy = new Double[dataGridView3.RowCount];//Y軸的資料陣列
for (int i = 0; i < dataGridView3.RowCount;
i++)
{
//list.Add(i, Convert.ToDouble(dataGridView3[2,
i].Value.ToString()));
dt = (DateTime)dataGridView3[3,i].Value;
szx[i] = dt.ToString("MM-dd hh:mm:ss");//按照02-29 18:00:00顯示
szy[i] = Convert.ToDouble(dataGridView3[2,
i].Value.ToString());
}
myPane.XAxis.Type = AxisType.Text;
// Generate a blue curve with circle symbols, and "My Curve 2" in
the legend
//新增X軸、Y軸的資料到面板上，但是由於AddCurve方法沒有匹配的引數，所以第二個X軸想顯示
//時間資料時，要先設定為null，然後在下面單獨新增。
LineItem myCurve = myPane.AddCurve("指數", null, szy, Color.Blue,
SymbolType.Circle);
myPane.XAxis.Scale.TextLabels = szx;//新增日期到X軸
// Fill the area under the curve with a white-red gradient at 45
degrees
myCurve.Line.Fill = new Fill(Color.White, Color.White, 45F);
// Make the symbols opaque by filling them with white
myCurve.Symbol.Fill = new Fill(Color.White);
// Fill the axis background with a color gradient
myPane.Chart.Fill = new Fill(Color.White,
Color.LightGoldenrodYellow, 45F);
// Fill the pane background with a color gradient
myPane.Fill = new Fill(Color.White, Color.FromArgb(220, 220, 255),
45F);
// Calculate the Axis Scale Ranges
zgc.AxisChange();
zgc.Refresh();
}