/// <summary>
///
/// </summary>
/// <param name="tbl"></param>
/// <param name="cfg"></param>
/// <returns></returns>
public LineBase CreateLine(DataTable tbl, LineDataConfig cfg, string xAxisFieldName)
{
LineBase line1 = CreateLine();
line1.Colour = cfg.Color;
// line name and font size
//
line1.Set_Key(cfg.Name, cfg.FontSize);
//line1.Tooltip = "my tip #val#";
//line1.Tooltip = "x_label #value#";
foreach (DataRow row in tbl.Rows)
{
double value = 0;
object valueObject = row[cfg.DataFieldName];
if (valueObject != DBNull.Value)
{
value = Convert.ToDouble(valueObject);
}
DateTime dt = Convert.ToDateTime(row[xAxisFieldName]);
string tip = string.Format("{0}\n{1}\n{2}\n", cfg.Name, dt, value);
LineDotValue ldValue = new LineDotValue(value, tip, cfg.Color);
line1.Add(ldValue);
}
return(line1);
}
/// <summary>
///
/// </summary>
/// <returns></returns>
internal OpenFlashChart.ChartBase CreateElement()
{
LineBase line1 = CreateLine();
_linebase = line1;
// color
//
// line name and font size
//
line1.Set_Key(this.Key, this.KeyFontSize);
//line1.Tooltip = "my tip #val#";
//line1.Tooltip = "x_label #value#";
DataTable tbl = this.DataSource as DataTable;
foreach (DataRow row in tbl.Rows)
{
double value = Convert.ToDouble(row[this.DataFieldName]);
DateTime dt = Convert.ToDateTime(row[this.DTFieldName]);
string tip = string.Format("{0}\n{1}", value, dt);
LineDotValue ldValue = new LineDotValue(value, tip, "#0000ff");
line1.Add(ldValue);
}
return(line1);
}
protected void Page_Load(object sender, EventArgs e)
{
OpenFlashChart.OpenFlashChart chart = new OpenFlashChart.OpenFlashChart();
ArrayList data1 = new ArrayList();
Random rand = new Random(DateTime.Now.Millisecond);
for (double i = 0; i < 12; i++)
{
int temp = rand.Next(30);
if (temp > 20)
{
data1.Add(new LineDotValue(temp, "your tip", "#fe0fe0"));
}
else
{
data1.Add(temp);
}
}
LineDotValue dotValue1 = new LineDotValue(rand.Next(30));
dotValue1.Sides = 3;
dotValue1.DotType = DotType.HOLLOW_DOT;
data1.Add(dotValue1);
LineDotValue dotValue2 = new LineDotValue(rand.Next(30));
dotValue2.IsHollow = true;
dotValue2.DotType = DotType.STAR;
data1.Add(dotValue2);
LineDotValue dotValue3 = new LineDotValue(rand.Next(30));
dotValue3.Sides = 4;
dotValue3.DotType = DotType.DOT;
data1.Add(dotValue3);
OpenFlashChart.LineHollow line1 = new LineHollow();
line1.Values = data1;
line1.HaloSize = 0;
line1.Width = 2;
line1.DotSize = 5;
line1.Tooltip = "提示：#val#";
chart.AddElement(line1);
chart.Title = new Title("line演示");
chart.Y_Axis.SetRange(0, 35, 5);
chart.Tooltip = new ToolTip("全局提示：#val#");
chart.Tooltip.Shadow = true;
chart.Tooltip.Colour = "#e43456";
chart.Tooltip.MouseStyle = ToolTipStyle.CLOSEST;
Response.Clear();
Response.CacheControl = "no-cache";
Response.Write(chart.ToPrettyString());
Response.End();
}
/// <summary>
///
/// </summary>
/// <returns></returns>
private bool IsAllZeroLine(LineBase line)
{
foreach (object obj in line.Values)
{
LineDotValue ldv = obj as LineDotValue;
if (ldv.Value != 0)
{
return(false);
}
}
return(true);
}
/// <summary>
///
/// </summary>
/// <param name="list"></param>
public void Find(IList list)
{
foreach (object obj in list)
{
LineDotValue ldv = obj as LineDotValue;
double value = (double)ldv.Value;
// min
//
if (_hasMin)
{
if (value < _min)
{
_min = value;
}
}
else
{
_min = value;
_hasMin = true;
}
//
//
if (_hasMax)
{
if (value > _max)
{
_max = value;
}
}
else
{
_max = value;
_hasMax = true;
}
}
}
