{
aD(r2Hv&|Ae0 RgbColor rgbColor = new RgbColorClass();3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)9vY']pF
rgbColor.Red = red;
b _w ?&R+ldA!G0 rgbColor.Green = green;3sNews.Net——3S社区&资讯平台(GIS|RS|GPS) ct"QfaQ/Q
rgbColor.Blue = blue;
return rgbColor;
%Vf B-Ok+i#vp0 }
private void btnPieChart_Click(object sender, EventArgs e)
*l(e"J/^4R1C0 {3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)?[r{`
IMap pMap = new MapClass();
;A2g;s8[q+\&d0e:D lJ0 IFeatureLayer pFLayer = (IFeatureLayer)axMapControl1.get_Layer(0);
m['O,rL.?5t'^0 IGeoFeatureLayer pGeoFeaLayer = (IGeoFeatureLayer)pFLayer;
IChartRenderer pChartRenderer = new ChartRendererClass();
// Set up the field to draw charts
IRendererFields pRenderFields = (IRendererFields)pChartRenderer;
T8AEE/S+OC\@+_o y0 pRenderFields.AddField("Pop_cntry", null);3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)%H[\&iB`{DG*F
IPieChartRenderer pPieChartRender = (IPieChartRenderer)pChartRenderer;
//Calculate the max value of the data field to scale the chart
H"fcPl$F0 //ICursor pCursor = new CursorClass();
IQueryFilter pQueryFilter = new QueryFilterClass();
S^+s\2W/k'p;e&K0 //IRowBuffer pRow = new RowBufferClass();
"w ?f b-YS#X _A0 ITable pTable = (ITable)pGeoFeaLayer;
'X8qcz*HR,b0 pQueryFilter.AddField("Pop_cntry");
SG9o,iF1G2eb0 ICursor pCursor = pTable.Search(pQueryFilter, true);
int fieldIndex;
4A&zWsS5O}:y0 double MaxValue;3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)] APp\
bool firstValue;
hh(Le)D0 double fieldValue;
fieldIndex = pTable.FindField("Pop_cntry");3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)9OWjq7~[/C\
firstValue = true;
2k3SV X_}Nj'b0 MaxValue = 0;
3sNews.Net——3S社区&资讯平台(GIS|RS|GPS) TM-`e&E1]&`1g
IRowBuffer pRow = pCursor.NextRow();3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)kU-h.mIs;N%U1tMAa
while (pRow != null)3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)X{ F D ~
{
&b:t B:Dj U0 fieldValue =(double) pRow.get_Value(fieldIndex);3sNews.Net——3S社区&资讯平台(GIS|RS|GPS);P e;q5a*yT
if (firstValue)
,Gt.\#Lz0 {
(T%k*bG iAM6w:l0 MaxValue = fieldValue;
gcdh1B#y1hV,tRw U0 firstValue = false;3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)'Y-d9p Cw m"J$S
}
if (fieldValue > MaxValue)3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)*Z1~{Pc3V
{
:G'g s;VB a6@6~0 MaxValue = fieldValue;3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)*W pC.E?j
}3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)BlX%Q-K.L.?O*v
pRow = pCursor.NextRow();3sNews.Net——3S社区&资讯平台(GIS|RS|GPS):D8VAFdZ_U
}
IPieChartSymbol pPiechartSymbol = new Pie ChartSymbolClass();
(w3@1tc%R"g&_0 IFillSymbol pFillSymbol = new SimpleFillSymbolClass();
IChartSymbol pChartSymbol = (IChartSymbol)pPiechartSymbol;3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)7SZB`.M
pPiechartSymbol.Clockwise = true;
'T6QdYp&G)R8@0 pPiechartSymbol.UseOutline = true;
ILineSymbol pOutLine = new SimpleLineSymbolClass();
N(B,b8a!{2o0 pOutLine.Color = GetRgbColor(255,0,255);
\-N.rwA&P"Lk0 pOutLine.Width = 1;3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)atP~ |Eu`R
pPiechartSymbol.Outline = pOutLine;
IMarkerSymbol pMarkerSymbol = (IMarkerSymbol)pPiechartSymbol;
//finally
pChartSymbol.MaxValue = MaxValue;
pMarkerSymbol.Size = 16;
ISymbolArray pSymbolArray = (ISymbolArray)pPiechartSymbol;
}'E+N? S0 pFillSymbol.Color = GetRgbColor(213,212,252);
pFillSymbol.Outline = pOutLine;
&^^3bI%wM0 pSymbolArray.AddSymbol((ISymbol)pFillSymbol);
//set up the background
pFillSymbol.Color = GetRgbColor(239,228,190);
[r5B,j%[0 pChartRenderer.BaseSymbol = (ISymbol)pFillSymbol;
pChartRenderer.UseOverposter = false;
pPieChartRender.MinSize = 6;
pPieChartRender.MinValue = 453588;3sNews.Net——3S社区&资讯平台(GIS|RS|GPS) T8c7}.]:ZF)W
pPieChartRender.FlanneryCompensation = false;3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)VvM9Zq[&d_A%|
pPieChartRender.ProportionalBySum = true;
pChartRenderer.ChartSymbol = (IChartSymbol)pPiechartSymbol;3sNews.Net——3S社区&资讯平台(GIS|RS|GPS)H:w1H6[?QC
pChartRenderer.CreateLegend();
]Xy$jG To0 pGeoFeaLayer.Renderer =(IFeatureRenderer) pChartRenderer;
this.axLicenseControl1.Refresh();
}