private void method_1(IEnumRelationshipClass ienumRelationshipClass_0, IObject iobject_0, TreeNode treeNode_0,
bool bool_3)
{
ienumRelationshipClass_0.Reset();
for (IRelationshipClass class2 = ienumRelationshipClass_0.Next();
class2 != null;
class2 = ienumRelationshipClass_0.Next())
{
try
{
IObjectClass destinationClass;
if (bool_3)
{
destinationClass = class2.DestinationClass;
}
else
{
destinationClass = class2.OriginClass;
}
TreeNode node = new TreeNode(destinationClass.AliasName)
{
Tag = destinationClass
};
ISet objectsRelatedToObject = class2.GetObjectsRelatedToObject(iobject_0);
objectsRelatedToObject.Reset();
for (IRowBuffer buffer = objectsRelatedToObject.Next() as IRowBuffer;
buffer != null;
buffer = objectsRelatedToObject.Next() as IRowBuffer)
{
TreeNode node2 = new TreeNode(buffer.get_Value(0).ToString())
{
Tag = buffer
};
node.Nodes.Add(node2);
}
if (node.Nodes.Count > 0)
{
treeNode_0.Nodes.Add(node);
}
}
catch (Exception exception)
{
exception.ToString();
}
}
}
// 唯一值符号化
public static void UniqueValueRenderer(IFeatureLayer featureLayer, string fieldName, IMapControl2 mapControl, AxTOCControl tocControl)
{
ITable pTable = featureLayer as ITable;
IUniqueValueRenderer pRenderer = new UniqueValueRendererClass();
pRenderer.FieldCount = 1; // 设置唯一值符号化的关键字段为一个
pRenderer.set_Field(0, fieldName); // 设置唯一值符号化的第一个关键字段
IRandomColorRamp pColorRamp = new RandomColorRampClass()
{
StartHue = 0,
MinValue = 0,
MinSaturation = 0,
EndHue = 100,
MaxValue = 100,
MaxSaturation = 100
};
// 根据渲染字段的值的个数，设置一组随机颜色
pColorRamp.Size = featureLayer.FeatureClass.FeatureCount(new QueryFilterClass());
bool bSuccess = false;
pColorRamp.CreateRamp(out bSuccess);
IEnumColors pEnumColors = pColorRamp.Colors;
IColor pNextUniqueColor = null;
// 查询字段的值
IQueryFilter pQueryFilter = new QueryFilterClass();
pQueryFilter.AddField(fieldName);
int fieldNumber = pTable.FindField(fieldName); // 获取渲染字段索引
ICursor pCursor = pTable.Search(pQueryFilter, true);
IRow pNextRow = pCursor.NextRow();
object codeValue = null;
IRowBuffer pNextRowBuffer = null;
while (pNextRow != null)
{
pNextRowBuffer = pNextRow as IRowBuffer;
// 获取渲染字段的每一个值
codeValue = pNextRowBuffer.get_Value(fieldNumber);
pNextUniqueColor = pEnumColors.Next();
if (pNextUniqueColor == null)
{
pEnumColors.Reset();
pNextUniqueColor = pEnumColors.Next();
}
ISymbol pSymbol = null;
switch (featureLayer.FeatureClass.ShapeType)
{
case esriGeometryType.esriGeometryPolygon:
pSymbol = new SimpleFillSymbolClass()
{
Color = pNextUniqueColor
};
break;
case esriGeometryType.esriGeometryPolyline:
pSymbol = new SimpleLineSymbolClass()
{
Color = pNextUniqueColor
};
break;
case esriGeometryType.esriGeometryPoint:
pSymbol = new SimpleMarkerSymbolClass()
{
Color = pNextUniqueColor
};
break;
}
pRenderer.AddValue(codeValue.ToString(), "", pSymbol);
pNextRow = pCursor.NextRow();
}
(featureLayer as IGeoFeatureLayer).Renderer = pRenderer as IFeatureRenderer;
mapControl.Refresh();
tocControl.Update();
}
private void mnuUniqueValue_Click(object sender, EventArgs e)
{
ILayer pLayer = MainMap.get_Layer(0);
ITable pTable = pLayer as ITable;
IUniqueValueRenderer pUniqueValueRender = new UniqueValueRendererClass();
pUniqueValueRender.FieldCount = 1;
pUniqueValueRender.set_Field(0, "ADCODE99");
int fldIndex = pTable.Fields.FindField("ADCODE99");
// 产生一个随机的色带
IRandomColorRamp pColorRamp = new RandomColorRampClass();
pColorRamp.StartHue = 0;
pColorRamp.MinValue = 99;
pColorRamp.MinSaturation = 15;
pColorRamp.EndHue = 360;
pColorRamp.MaxValue = 100;
pColorRamp.MinSaturation = 30;
// 任意产生50种颜色
pColorRamp.Size = 50;
bool bOK;
pColorRamp.CreateRamp(out bOK);
IEnumColors pEnumRamp = pColorRamp.Colors;
IColor pNextUniqueColor = null;
IQueryFilter pQueryFilter = new QueryFilterClass();
pQueryFilter.AddField("ADCODE99");
ICursor pCursor = pTable.Search(pQueryFilter, true);
IRow pRow = pCursor.NextRow();
while (pRow != null)
{
IRowBuffer pRowBuffer = pRow as IRowBuffer;
System.Object cValue = pRowBuffer.get_Value(fldIndex);
pNextUniqueColor = pEnumRamp.Next();
if (pNextUniqueColor == null)
{
pEnumRamp.Reset();
pNextUniqueColor = pEnumRamp.Next();
}
ISimpleFillSymbol pSym = new SimpleFillSymbolClass();
pSym.Color = pNextUniqueColor;
pUniqueValueRender.AddValue(cValue.ToString(), "", pSym as ISymbol);
pRow = pCursor.NextRow();
}
IGeoFeatureLayer pGeoFeatureLayer = pLayer as IGeoFeatureLayer;
pGeoFeatureLayer.Renderer = pUniqueValueRender as IFeatureRenderer;
MainMap.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
}
// 唯一值符号化
public static void Symbology_UniqueValue(IFeatureLayer featureLayer, string fieldName, IMapControl2 mapControl, AxTOCControl tocControl)
{
IUniqueValueRenderer pRenderer = new UniqueValueRendererClass()
{
FieldCount = 1
};
// 随机色带
IColorRamp pColorRamp = new RandomColorRampClass()
{
StartHue = 0, MinSaturation = 0, MinValue = 0,
EndHue = 360, MaxSaturation = 100, MaxValue = 100,
Size = featureLayer.FeatureClass.FeatureCount(new QueryFilterClass())
};
bool bOk = false;
pColorRamp.CreateRamp(out bOk);
IEnumColors pColors = pColorRamp.Colors;
ITable pTable = featureLayer as ITable;
int fieldIndex = pTable.FindField(fieldName);
IQueryFilter pQueryFilter = new QueryFilterClass();
pQueryFilter.AddField(fieldName);
ICursor pCursor = pTable.Search(pQueryFilter, true);
IRow pRow = pCursor.NextRow();
while (pRow != null)
{
IRowBuffer pRowBuffer = pRow as IRowBuffer;
string value = pRowBuffer.get_Value(fieldIndex).ToString();
IColor pColor = pColors.Next();
ISymbol pSymbol = null;
switch (featureLayer.FeatureClass.ShapeType)
{
case esriGeometryType.esriGeometryPoint:
pSymbol = new SimpleMarkerSymbolClass()
{
Color = pColor
};
break;
case esriGeometryType.esriGeometryPolyline:
pSymbol = new SimpleLineSymbolClass()
{
Color = pColor
};
break;
case esriGeometryType.esriGeometryPolygon:
pSymbol = new SimpleFillSymbolClass()
{
Color = pColor
};
break;
}
pRenderer.AddValue(value, "", pSymbol);
pRow = pCursor.NextRow();
}
(featureLayer as IGeoFeatureLayer).Renderer = pRenderer as IFeatureRenderer;
mapControl.Refresh();
tocControl.Update();
}
/// <summary>
/// 实现要素图层属性唯一值设色
/// </summary>
/// <param name="pFeatureLayer">需要设色的要素图层</param>
/// <param name="fieldName">唯一值的属性字段</param>
private void UniqueValueRenderer(IFeatureLayer pFeatureLayer, string fieldName)
{
IGeoFeatureLayer pGeoFeatureLayer = pFeatureLayer as IGeoFeatureLayer;
ITable pTable = pFeatureLayer as ITable;
int fieldNumber = pTable.FindField(fieldName);
IUniqueValueRenderer pUniqueRenderer = new UniqueValueRendererClass();
pUniqueRenderer.FieldCount = 1;
pUniqueRenderer.set_Field(0, fieldName);
//设置显示颜色的范围
IRandomColorRamp pRandColorRamp = new RandomColorRampClass();
pRandColorRamp.StartHue = 0;
pRandColorRamp.MinValue = 85;
pRandColorRamp.MinSaturation = 15;
pRandColorRamp.EndHue = 360;
pRandColorRamp.MaxValue = 100;
pRandColorRamp.MaxSaturation = 30;
//创建随机颜色带
pRandColorRamp.Size = getUniqueValue(pFeatureLayer.FeatureClass, fieldName).Count;
bool bSucess = false;
pRandColorRamp.CreateRamp(out bSucess);
IEnumColors pEnumColors = pRandColorRamp.Colors;
IColor pNextUniqueColor = null;
//属性唯一值
IQueryFilter pQueryFilter = new QueryFilterClass();
pQueryFilter.AddField(fieldName);
ICursor pCursor = pFeatureLayer.FeatureClass.Search(pQueryFilter, false) as ICursor;
IRow pNextRow = pCursor.NextRow();
object codeValue = null;
IRowBuffer pNextRowBuffer = null;
IFillSymbol pFillSymbol = null;
ILineSymbol pLineSymbol = null;
IMarkerSymbol pMarkerSymbol = null;
while (pNextRow != null)
{
pNextRowBuffer = pNextRow as IRowBuffer;
codeValue = pNextRowBuffer.get_Value(fieldNumber);
pNextUniqueColor = pEnumColors.Next();
if (pNextUniqueColor == null)
{
pEnumColors.Reset();
pNextUniqueColor = pEnumColors.Next();
}
switch (pGeoFeatureLayer.FeatureClass.ShapeType)
{
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPoint:
pMarkerSymbol = new SimpleMarkerSymbolClass();
pMarkerSymbol.Color = pNextUniqueColor;
pUniqueRenderer.AddValue(codeValue.ToString(), "", pMarkerSymbol as ISymbol);
pNextRow = pCursor.NextRow();
break;
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolyline:
pLineSymbol = new SimpleLineSymbolClass();
pLineSymbol.Color = pNextUniqueColor;
pUniqueRenderer.AddValue(codeValue.ToString(), "", pLineSymbol as ISymbol);
pNextRow = pCursor.NextRow();
break;
case ESRI.ArcGIS.Geometry.esriGeometryType.esriGeometryPolygon:
pFillSymbol = new SimpleFillSymbolClass();
pFillSymbol.Color = pNextUniqueColor;
pUniqueRenderer.AddValue(codeValue.ToString(), "", pFillSymbol as ISymbol);
pNextRow = pCursor.NextRow();
int k = pFillSymbol.Color.CMYK;
break;
default:
break;
}
}
pGeoFeatureLayer.Renderer = pUniqueRenderer as IFeatureRenderer;
//必须手动清除COM对象，否则会造成内存溢出（尤其是IQueryFilter,ICursor）
Marshal.ReleaseComObject(pQueryFilter);
Marshal.ReleaseComObject(pCursor);
Marshal.ReleaseComObject(pEnumColors);
}
private void btn_OK_Click(object sender, EventArgs e)
{
string LayerName = cbx_Layer.SelectedItem.ToString();
IGeoFeatureLayer pGeoFeatureLayer = (IGeoFeatureLayer)m_FeatureLayer;
ITable pTable = (ITable)pGeoFeatureLayer;
ICursor pCursor = pTable.Search(null, true);
int numFields = lstbx_RightFields.Items.Count;
string[] fildName = new string[numFields];
int[] fieldIndecies = new int[numFields];
for (int i = 0; i < numFields; i++)
{
if (lstbx_RightFields.Items[i].ToString() != "None")
{
fildName[i] = lstbx_RightFields.Items[i].ToString();
fieldIndecies[i] = pTable.FindField(fildName[i]);
}
else
{
MessageBox.Show("不可用的字段,请选择其它图层");
return;
}
}
//fieldIndecies[0] = pTable.FindField(strPopField1);
//fieldIndecies[1] = pTable.FindField(strPopField2);
bool firstValue = true;
double dmaxValue = 0.0;
//Iterate across each feature
IRowBuffer pRowBuffer = pCursor.NextRow();
double dfieldValue;
while (pRowBuffer != null)
{
// iterate through each data field and update the maxVal if needed
for (int lfieldIndex = 0; lfieldIndex <= numFields - 1; lfieldIndex++)
{
dfieldValue = (double)pRowBuffer.get_Value(fieldIndecies[lfieldIndex]);
if (firstValue)
{
// Special case for the first value in a feature class
dmaxValue = dfieldValue;
firstValue = false;
}
else
{
if (dfieldValue > dmaxValue)
{
// we've got a new biggest value
dmaxValue = dfieldValue;
}
}
}
pRowBuffer = pCursor.NextRow();
}
if (dmaxValue <= 0)
{
MessageBox.Show("Failed to gather stats on the feature class");
return;
}
IChartRenderer pChartRenderer = new ChartRendererClass();
//Set up the fields to draw charts of
IRendererFields pRendererFields = (IRendererFields)pChartRenderer;
for (int i = 0; i < numFields; i++)
{
pRendererFields.AddField(fildName[i], fildName[i]);
}
// Set up the chart marker symbol to use with the renderer
IPieChartSymbol pPieChartSymbol;
pPieChartSymbol = new PieChartSymbolClass();
//饼图使用顺时针方法
pPieChartSymbol.Clockwise = true;
//饼图有外轮廓线
pPieChartSymbol.UseOutline = true;
IChartSymbol pChartSymbol = (IChartSymbol)pPieChartSymbol;
pChartSymbol.MaxValue = dmaxValue;
ILineSymbol pOutline;
pOutline = new SimpleLineSymbolClass();
pOutline.Color = getRGB(213, 212, 252);
pOutline.Width = 1;
//设置外轮廓线的样式
pPieChartSymbol.Outline = pOutline;
IMarkerSymbol pMarkerSymbol = (IMarkerSymbol)pPieChartSymbol;
pMarkerSymbol.Size = 8;
IColorRamp pColorRamp = (IColorRamp)m_StyleGallertItem.Item;
pColorRamp.Size = pTable.RowCount(null);
bool ok = true;
pColorRamp.CreateRamp(out ok);
IEnumColors pEnumRamp = pColorRamp.Colors;
IFillSymbol pFillSymbol;
ISymbolArray pSymbolArray = (ISymbolArray)pPieChartSymbol;
for (int i = 0; i < numFields; i++)
{
pFillSymbol = new SimpleFillSymbolClass();
for (int j = 0; j < 8; j++)
{
pEnumRamp.Next();
}
pFillSymbol.Color = pEnumRamp.Next();
pSymbolArray.AddSymbol((ISymbol)pFillSymbol);
}
//Now set the barchart symbol into the renderer
pChartRenderer.ChartSymbol = (IChartSymbol)pPieChartSymbol;
// pChartRenderer.Label = "Population";
//set up the background symbol to use tan color
pFillSymbol = new SimpleFillSymbolClass();
pFillSymbol.Color = m_BackGroundColor;
pChartRenderer.BaseSymbol = (ISymbol)pFillSymbol;
pChartRenderer.UseOverposter = false;
IPieChartRenderer pPieChartRenderer = pChartRenderer as IPieChartRenderer;
pPieChartRenderer.MinSize = 3;
//设置最小值，用于尺寸比例
pPieChartRenderer.MinValue = 453588;
pPieChartRenderer.FlanneryCompensation = false;
pPieChartRenderer.ProportionalBySum = true;
//pChartRenderer.Label = "Population";
//产生图例对象
pChartRenderer.CreateLegend();
//pdate the renderer and refresh the screen
pGeoFeatureLayer.Renderer = (IFeatureRenderer)pChartRenderer;
m_MapControl.ActiveView.ContentsChanged();
m_MapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
}