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private
static IFeatureClass CreatStnShp(string
shp) { //打开工作空间 IWorkspaceFactory wsfactory = new
ShapefileWorkspaceFactoryClass(); string
ssss = System.IO.Path.GetDirectoryName(shp); IWorkspace workspace = wsfactory.OpenFromFile(ssss, 0); IFeatureWorkspace pFeatWsp = workspace as
IFeatureWorkspace; if
(File.Exists(shp)) { DialogResult dr = MessageBox.Show("文件已经存在,是否使用该文件?", "提示", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question); if
( dr== DialogResult.Yes) { return
pFeatWsp.OpenFeatureClass(System.IO.Path.GetFileNameWithoutExtension(shp)); } else
if(dr==DialogResult.No) { //删除已有 DialogResult ddr = MessageBox.Show("是否删除并替换已有文件", "提示", MessageBoxButtons.YesNo, MessageBoxIcon.Question); if
(ddr == DialogResult.Yes) { string
dbffile = System.IO.Path.ChangeExtension(shp, ".dbf"); string
shxfile = System.IO.Path.ChangeExtension(shp, ".shx"); string
prjfile = System.IO.Path.ChangeExtension(shp, ".prj"); File.Delete(shp); if
(File.Exists(dbffile)) File.Delete(dbffile); if
(File.Exists(shxfile)) File.Delete(shxfile); if
(File.Exists(prjfile)) File.Delete(prjfile); } else { MessageBox.Show("请重新选择shapfile文件的路径"); } } else { return
null; } } IGeometryDefEdit pGeoDef = new
GeometryDefClass(); pGeoDef.GeometryType_2 = esriGeometryType.esriGeometryPoint; //设置空间参考 ISpatialReferenceFactory3 spatialReferenceFactory = new
SpatialReferenceEnvironmentClass(); ISpatialReference pSr = spatialReferenceFactory.CreateGeographicCoordinateSystem((int)esriSRGeoCSType.esriSRGeoCS_WGS1984); //设置字段 IFieldEdit pField; IFieldsEdit pFieldsEdit = new
FieldsClass(); //设置几何字段 pField = new
FieldClass(); pField.Type_2 = esriFieldType.esriFieldTypeGeometry; pField.GeometryDef_2 = pGeoDef; pField.Name_2 = "Shape"; pFieldsEdit.AddField(pField); //产生唯一索引字段 pField = new
FieldClass(); pField.Name_2 = "OBJECTID"; pField.Type_2 = esriFieldType.esriFieldTypeOID; pFieldsEdit.AddField(pField); //添加station相关字段 //string[] str = new string[]{"NCDCID","WBAN","NAME","COOPID","COUNTRY","STNTYPE"}; string[] str = new
string[] { "WBAN", "NAME", "LOCATION", "LAT", "LON"}; foreach
(string
stt in
str) { pField = new
FieldClass(); pField.Name_2 = stt; pField.AliasName_2 = stt; pField.Type_2 = esriFieldType.esriFieldTypeString; if
(stt == "LOCATION") pField.Length_2 = 60; else pField.Length_2 = 30; pFieldsEdit.AddField(pField); } pField = new
FieldClass(); pField.Name_2 = "StnHeight"; pField.Type_2 = esriFieldType.esriFieldTypeDouble; pFieldsEdit.AddField(pField); pField = new
FieldClass(); pField.Name_2 = "GndHeight"; pField.Type_2 = esriFieldType.esriFieldTypeDouble; pFieldsEdit.AddField(pField); IFeatureClass pfeatcls =pFeatWsp.CreateFeatureClass(System.IO.Path.GetFileNameWithoutExtension(shp), pFieldsEdit as
IFields, null, null, esriFeatureType.esriFTSimple, "Shape", ""); IGeoDataset pGeoDs = pfeatcls as
IGeoDataset; IGeoDatasetSchemaEdit pGeoDSe = pGeoDs as
IGeoDatasetSchemaEdit; if
(pGeoDSe.CanAlterSpatialReference) { pGeoDSe.AlterSpatialReference(pSr); } return
pfeatcls; } |
上面是可正常运行的代码。自己写的时候凭着自己的理解做了部分修改，在字段声明的时候略有不同，如下
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IFields pfs = new
FieldsClass(); IFieldsEdit pFieldsEdit = pfs as
IFieldsEdit; IField pFieldd = new
FieldClass(); IFieldEdit pField = pFieldd as
IFieldEdit; |
结果在运行的时候出现COM异常，仔细核查了CreateFeatureClass的每个参数，多次检查都没有查到结果。后来修改为文中第一段代码声明方式，再运行成功了。
为了找出错误，我又把声明换回第二段代码，令人郁闷的是，又没异常了。
本文只描述现象，不解释原因
CreateFeatureClass COM异常,布布扣,bubuko.com
原文：http://www.cnblogs.com/DayDreamEveryWhere/p/3568456.html