private void ZedGraphStyle_ZedGraphDrawing(object sender, ZedGraphDrawingEventArgs e)
{
ZedGraphControl zedGraph = new ZedGraphControl();
zedGraph.Size = new Size(100, 100);
zedGraph.GraphPane.Fill.Type = FillType.None;
zedGraph.GraphPane.Chart.Fill.Type = FillType.None;
zedGraph.GraphPane.Border.IsVisible = false;
zedGraph.GraphPane.Chart.Border.IsVisible = false;
zedGraph.GraphPane.XAxis.IsVisible = false;
zedGraph.GraphPane.YAxis.IsVisible = false;
zedGraph.GraphPane.Legend.IsVisible = false;
zedGraph.GraphPane.Title.IsVisible = false;
for (int i = 0; i < SelectedColumns.Count; i++)
{
double value = 0;
if (!double.TryParse(e.Feature.ColumnValues[SelectedColumns[i]], out value))
{
zedGraph.Dispose();
return;
}
Color color = System.Drawing.Color.FromArgb(pieColors[i].AlphaComponent, pieColors[i].RedComponent, pieColors[i].GreenComponent, pieColors[i].BlueComponent);
PieItem pieItem = zedGraph.GraphPane.AddPieSlice(value, color, 0.08, "");
pieItem.LabelDetail.IsVisible = false;
}
zedGraph.AxisChange();
e.Bitmap = zedGraph.GraphPane.GetImage();
zedGraph.Dispose();
}
private void AssignGraph(ref ZedGraphControl graphControl, ZedGraphControl newGraphControl, Panel parentPanel)
{
if (graphControl != null)
{
parentPanel.Controls.Remove(graphControl);
graphControl.Dispose();
}
graphControl = newGraphControl;
}
public static ZedGraphControl getGraphControl()
{
if (ct != null)
{
try
{
ct.Dispose();
ct = null;
}
catch
{
ct = null;
}
}
int n = 5;
Exception ex = null;
while (n > 0)
{
try
{
n--;
ct = new ZedGraphControl();
return(ct);
break;
}
catch (Exception exc)
{
ex = exc;
if (ct != null)
{
ct = null;
}
System.Threading.Thread.Sleep(100);
}
}
throw (ex);
}
public static string SaveDataToPng(double[] data, int id)
{
ZedGraphControl zedGraphControl1 = new ZedGraphControl();
GraphPane paneA = new GraphPane();
PointPairList listA = new PointPairList();
paneA.Title.IsVisible = false;
paneA.XAxis.IsVisible = false;
paneA.YAxis.IsVisible = false;
if (id != 0)
{
paneA.XAxis.Scale.Max = 300000;
}
else
{
paneA.XAxis.Scale.Max = 550000;
}
for (int i = 0; i < data.Length; i++)
{
listA.Add(i, data[i]);
}
LineItem myCurveA = paneA.AddCurve("", listA, Color.Blue, SymbolType.None);
using (Graphics g = zedGraphControl1.CreateGraphics())
{
paneA.AxisChange(g);
paneA.ReSize(g, new RectangleF(0, 0, 1800, 300));
}
string url = @"D:\\PipeWeb\\AdImages\\";
string filename = DateTime.Now.ToString("yyyy-MM-dd") + "--" + DateTime.Now.Hour.ToString() + "-" + DateTime.Now.Minute.ToString() + "-" + DateTime.Now.Second.ToString() + "--" + id.ToString();//以日期时间命名，避免文件名重复
string strName = url + filename + ".png";
if (!Directory.Exists(url)) //如果不存在就创建file文件夹
{
Directory.CreateDirectory(url); //创建该文件夹
paneA.GetImage().Save(strName, ImageFormat.Png);
}
else
{
paneA.GetImage().Save(strName, ImageFormat.Png);
}
zedGraphControl1.Dispose();
return(strName);
}
/// <summary>
/// Creates an image of a barchart which represents the data in <paramref name="barChartData"/>. The image is saved at <paramref name="completeFileName"/>.
/// </summary>
/// <param name="completeFileName">The path at which to save the generated image.</param>
/// <param name="barChartData">The <year, value> plots for the barchart.</param>
/// <returns>True on success, false on fail.</returns>
private bool CreateBarChartImageFile(string completeFileName, SortedDictionary <int, double> barChartData)
{
if (Thread.CurrentThread.GetApartmentState() != ApartmentState.STA)
{
return(this.InvokeCreateBarChartImageFile(completeFileName, barChartData));
}
try
{
const string fontFamily = "Times New Roman";
const float fontSize = 12f;
ZedGraphControl chart = new ZedGraphControl();
chart.Size = new Size((barChartData.Count + 2) * 45, 300);
GraphPane pane = chart.GraphPane;
pane.IsFontsScaled = false;
pane.BarSettings.Type = BarType.Stack;
pane.Chart.Fill = new Fill(Color.Transparent);
pane.Fill = new Fill(Color.LightBlue, Color.AliceBlue, 90F);
pane.Title.FontSpec.Family = fontFamily;
pane.Title.FontSpec.Size = fontSize;
pane.Title.IsVisible = false;
pane.Title.Text = string.Empty;
pane.XAxis.MajorGrid.IsVisible = false;
pane.XAxis.MajorTic.IsInside = false;
pane.XAxis.Scale.FontSpec.Family = fontFamily;
pane.XAxis.Scale.FontSpec.Size = fontSize;
pane.XAxis.Title.FontSpec.Family = fontFamily;
pane.XAxis.Title.FontSpec.Size = fontSize;
pane.XAxis.Title.IsVisible = false;
pane.XAxis.Title.Text = string.Empty;
pane.X2Axis.IsVisible = false;
pane.X2Axis.MajorGrid.IsVisible = false;
pane.X2Axis.MinorGrid.IsVisible = false;
pane.X2Axis.MajorTic.IsInside = false;
pane.X2Axis.MajorTic.IsOutside = false;
pane.X2Axis.MinorTic.IsInside = false;
pane.X2Axis.MinorTic.IsOutside = false;
pane.YAxis.MajorGrid.IsVisible = true;
pane.YAxis.MajorGrid.Color = Color.LightSteelBlue;
pane.YAxis.MajorTic.IsInside = false;
pane.YAxis.MinorTic.IsInside = false;
pane.YAxis.MinorTic.IsOutside = false;
pane.YAxis.Scale.FontSpec.Family = fontFamily;
pane.YAxis.Scale.FontSpec.Size = fontSize;
pane.YAxis.Title.FontSpec.Family = fontFamily;
pane.YAxis.Title.FontSpec.Size = fontSize;
pane.YAxis.Title.IsVisible = false;
pane.YAxis.Title.Text = string.Empty;
pane.Y2Axis.IsVisible = false;
pane.Y2Axis.MajorGrid.IsVisible = false;
pane.Y2Axis.MinorGrid.IsVisible = false;
pane.Y2Axis.MajorTic.IsInside = false;
pane.Y2Axis.MajorTic.IsOutside = false;
pane.Y2Axis.MinorTic.IsInside = false;
pane.Y2Axis.MinorTic.IsOutside = false;
int idx = 0;
string[] labels = new string[barChartData.Count];
PointPairList nPoints = new PointPairList();
PointPairList pPoints = new PointPairList();
foreach (KeyValuePair <int, double> yearValue in barChartData)
{
int yr = yearValue.Key % 100;
labels[idx] = "'" + yr.ToString("00");
double value = yearValue.Value * 100;
if (yearValue.Value >= 0)
{
nPoints.Add(yearValue.Key, 0.0);
pPoints.Add(yearValue.Key, value);
}
else
{
nPoints.Add(yearValue.Key, value);
pPoints.Add(yearValue.Key, 0.0);
}
idx++;
}
pane.XAxis.Scale.TextLabels = labels;
pane.XAxis.Type = AxisType.Text;
//negative values
BarItem nBar = pane.AddBar(string.Empty, nPoints, Color.Empty);
nBar.Bar.Fill = new Fill(Color.FromArgb(227, 99, 52), Color.FromArgb(255, 177, 126), Color.FromArgb(227, 99, 52));
//positive values
BarItem pBar = pane.AddBar(string.Empty, pPoints, Color.Empty);
pBar.Bar.Fill = new Fill(Color.FromArgb(81, 148, 157), Color.FromArgb(107, 197, 222), Color.FromArgb(81, 148, 157));
//1 - Update the chart with the series
chart.AxisChange();
//2 - Process the value labels for each point
this.WriteValueLabels(pane, nBar, fontFamily, fontSize, true);
this.WriteValueLabels(pane, pBar, fontFamily, fontSize, false);
//3 - Update the chart again
chart.AxisChange();
using (Image img = chart.GetImage())
{
EncoderParameters parms = new EncoderParameters(1);
EncoderParameter parm = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 80L);
parms.Param[0] = parm;
ImageCodecInfo jgpEncoder = GetEncoder(ImageFormat.Jpeg);
img.Save(completeFileName, jgpEncoder, parms);
}
try
{
chart.Dispose();
chart = null;
}
catch { }
return(true);
}
catch { }
return(false);
}