小生 原文 arcgis Engine创建shp图层
以创建点图层为例。首先要得到保存文件的地址。
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SaveFileDialog saveFileDialog =
new
SaveFileDialog();
saveFileDialog.Filter =
"Shape文件（*.shp）|*.shp"
;
saveFileDialog.Title =
"新建点形shp文件"
;
saveFileDialog.CheckFileExists =
false
;
DialogResult dialogResult = saveFileDialog.ShowDialog();
IWorkspaceFactory pWorkspaceFactory =
new
ShapefileWorkspaceFactory();
int
index;
string
fileName;
string
filePath;
if
(dialogResult == DialogResult.OK)
{
fileFullPath = saveFileDialog.FileName;
index = fileFullPath.LastIndexOf("\");
fileName = fileFullPath.Substring(index + 1);
filePath = fileFullPath.Substring(0, index);
if
(System.IO.File.Exists(saveFileDialog.FileName))
//检查文件是否存在
{
if
(MessageBox.Show(
"该文件夹下已经有同名文件，替换原文件？"
,
"询问"
, MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK)
{
IFeatureWorkspace FWS = pWorkspaceFactory.OpenFromFile(filePath, 0)
as
IFeatureWorkspace;
IFeatureClass pFeatureClass = FWS.OpenFeatureClass(fileName);
IDataset pDataset = pFeatureClass
as
IDataset;
pDataset.Delete();
}
//System.IO.File.Delete(saveFileDialog.FileName);
else
return
;
}
}
else
{
fileFullPath =
null
;
return
;
}
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然后，要为该SHP建立新的字段：
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IFields pFields =
new
FieldsClass();
IFieldsEdit pFieldsEdit = pFields
as
IFieldsEdit;
IField pField =
new
FieldClass();
IFieldEdit pFieldEdit = pField
as
IFieldEdit;
pFieldEdit.Name_2 =
"Shape"
;
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
IGeometryDef pGeometryDef =
new
GeometryDef();
IGeometryDefEdit pGeometryDefEdit = pGeometryDef
as
IGeometryDefEdit;
pGeometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPoint;
//点、线、面什么的
pGeometryDefEdit.SpatialReference_2 = axMapControl1.SpatialReference;
ISpatialReferenceFactory2 ipSpaRefFa =
new
SpatialReferenceEnvironmentClass();
IGeographicCoordinateSystem ipGeoCorSys =
new
GeographicCoordinateSystemClass();
ipGeoCorSys = ipSpaRefFa.CreateGeographicCoordinateSystem((
int
)esriSRGeoCSType.esriSRGeoCS_WGS1984);
ISpatialReference ipSpaRef = ipGeoCorSys;
//IControlPrecision2 contrPrecision = ipSpaRef as IControlPrecision2;
pGeometryDefEdit.SpatialReference_2 = ipSpaRef;
pFieldEdit.GeometryDef_2 = pGeometryDef;
pFieldsEdit.AddField(pField);
pField =
new
FieldClass();
//新建字段
pFieldEdit = pField
as
IFieldEdit;
pFieldEdit.Length_2 = 100;
pFieldEdit.Name_2 =
"editorName"
;
pFieldEdit.AliasName_2 =
"editorName"
;
pFieldEdit.Type_2 = esriFieldType.esriFieldTypeString;
pFieldsEdit.AddField(pField);
//继续增加其它字段
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最后，创建图层
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IFeatureWorkspace pFeatureWorkspace = pWorkspaceFactory.OpenFromFile(filePath, 0)
as
IFeatureWorkspace;
int
i = fileName.IndexOf(
".shp"
);
if
(i == -1 )
pFeatureWorkspace.CreateFeatureClass(fileName +
".shp"
, pFields,
null
,
null
, esriFeatureType.esriFTSimple,
"Shape"
,
""
);
else
pFeatureWorkspace.CreateFeatureClass(fileName, pFields,
null
,
null
, esriFeatureType.esriFTSimple,
"Shape"
,
""
);
axMapControl1.AddShapeFile(filePath, fileName +
".shp"
);
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本文转自wenglabs博客园博客，原文链接：http://www.cnblogs.com/arxive/p/5903490.html，如需转载请自行联系原作者
