/// <summary>
/// 删除指定名称的Field
/// </summary>
/// <param name="featureClass"></param>
/// <param name="fieldname"></param>
public static void DeletField(IFeatureClass featureClass, string fieldname)
{
IFields fields = featureClass.Fields;
IField field = fields.get_Field(fields.FindField(fieldname));
featureClass.DeleteField(field);
}
public static void DeleteFields(string mdbfile, List <StockTable> tables)
{
IWorkspace workspace = mdbfile.OpenAccessFileWorkSpace();
foreach (var table in tables)
{
IFeatureClass featureClass = workspace.GetFeatureClass(table.Name);
for (var i = 0; i < featureClass.Fields.FieldCount; i++)
{
IField field = featureClass.Fields.get_Field(i);
Console.WriteLine(table.Name + "-" + field.Name);
if (Ignores.Any(e => e.ToLower() == field.Name.ToLower()) == false)
{
if (field.Type == esriFieldType.esriFieldTypeOID || field.Type == esriFieldType.esriFieldTypeGeometry || field.Type == esriFieldType.esriFieldTypeGUID)
{
continue;
}
if (table.Fields.Any(e => e.Name.ToLower() == field.Name.ToLower()) == false)
{
featureClass.DeleteField(field);
}
}
}
Marshal.ReleaseComObject(featureClass);
}
Marshal.ReleaseComObject(workspace);
}
private void ToolStripMenuItem_Click(object sender, EventArgs e)
{
try
{
IDataset dataset = (IDataset)Variable.pAttributeTableFeatureLayer.FeatureClass;
IWorkspaceEdit workspaceEdit = (IWorkspaceEdit)dataset.Workspace;
if (workspaceEdit.IsBeingEdited())
{
MessageBox.Show("地图处于编辑状态，暂时无法删除字段！");
return;
}
if (MessageBox.Show(string.Format("确定要删除 {0} 字段吗？", this.columnName), "", MessageBoxButtons.OKCancel) == DialogResult.OK)
{
IFeatureClass featureClass = Variable.pAttributeTableFeatureLayer.FeatureClass;
IFields fields = featureClass.Fields;
IField field = fields.get_Field(this.columnIndex);
featureClass.DeleteField(field); // 删除字段
dataGridView1.Columns.RemoveAt(this.columnIndex); // 删除列
MessageBox.Show(string.Format("{0} 字段已删除！", this.columnName));
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message + "\n" + ex.ToString(), "异常");
}
}
public bool DeleteField()
{
string strFieldName = cmbfields.Text;
if (m_pLayer is IFeatureLayer)
{
IFeatureLayer featureLayer = m_pLayer as IFeatureLayer;
if (featureLayer.FeatureClass == null)
{
return(false);
}
IFeatureClass featureClass = featureLayer.FeatureClass;
IFields fields = featureLayer.FeatureClass.Fields;
int nIndex = fields.FindField(strFieldName);
if (nIndex < 0)
{
return(false);
}
try
{
featureClass.DeleteField(fields.get_Field(nIndex));
return(true);
}
catch (System.Exception ex)
{
return(false);
}
}
return(false);
}
public bool PurePixel2Shp(out string msg)
{
IFeatureClass pFeatureClass = null;
try
{
string outEnd = System.IO.Path.Combine(BLL.ConstDef.PATH_TEMP, "PurePixel_" + DateTime.Now.ToFileTime().ToString() + ".shp");
if (!BLL.EnviVars.instance.GpExecutor.Raster2Polygon(_Hyper_PurePixel, outEnd, false, out msg))
{
return(false);
}
//字段整理
pFeatureClass = EngineAPI.OpenFeatureClass(outEnd);
pFeatureClass.DeleteField(pFeatureClass.Fields.get_Field(0));
IField field = new FieldClass();
IFieldEdit fieldEdit2 = field as IFieldEdit;
fieldEdit2.Name_2 = "CLASS_ID";
fieldEdit2.Type_2 = esriFieldType.esriFieldTypeInteger;
pFeatureClass.AddField(field);
return(true);
}
catch (Exception ex)
{
msg = ex.Message;
return(false);
}
}
public static void DeleteField(IFeatureClass featureClass, string fieldName)
{
int idx = featureClass.FindField(fieldName);
if (idx < 0)
{
return;
}
IField field = featureClass.Fields.Field[idx];
featureClass.DeleteField(field);
}
/// <summary>
/// 删除要素类中的字段
/// </summary>
public static bool DeleteField(IFeatureClass fc, string fieldName)
{
bool rbc = false;
int fIndex = fc.FindField(fieldName);
if (fIndex >= 0)
{
IField fd = fc.Fields.get_Field(fIndex);
fc.DeleteField(fd);
rbc = true;
}
return(rbc);
}
//删除字段事件；
private void 除字段ToolStripMenuItem_Click(object sender, EventArgs e)
{
string FieldName_1 = this.dataGridView1.Columns[DataGridiewColumnsIndex].HeaderText;
IFeatureLayer pfeaturelayer = layer as IFeatureLayer;
IFeatureClass pfeatureclass = pfeaturelayer.FeatureClass;
int index = pfeatureclass.FindField(FieldName_1);
IFields pfields = pfeatureclass.Fields;
IField pfield = pfields.get_Field(index);
if (MessageBox.Show("确认删除吗", "提示", MessageBoxButtons.YesNo) == DialogResult.Yes)
{
pfeatureclass.DeleteField(pfield);
}
}
private void button4_Click(object sender, EventArgs e)
{
//int i = this.dataGridView1.CurrentRow.Index;
try
{
int j = this.dataGridView1.CurrentCell.ColumnIndex;
string fieldName = dataGridView1.Columns[j].Name;
int index = pFields.FindField(fieldName);
IField pField = pFields.get_Field(index);
pFeatureClass.DeleteField(pField);
dataGridView1.Columns.RemoveAt(j);
MessageBox.Show("删除成功");
}
catch (Exception ex)
{
MessageBox.Show("删除失败");
}
}
/// <summary>
/// 删除要素集合非选中字段
/// </summary>
/// <param name="featureClass">要素集合</param>
/// <param name="selectFieldName">选中字段名称</param>
private static void DeleteFeatureClassFields(IFeatureClass featureClass, List <string> selectFieldName)
{
int fieldCount = featureClass.Fields.FieldCount; //字段总数
//字段数等于选中字段数，直接返回
if (selectFieldName.Count == fieldCount)
{
return;
}
//删除不在表格中的字段
//从大往小进行遍历，因为字段总数会变化
for (int i = fieldCount - 1; i > 0; i--) //保留FID和Shape字段，所以不删除索引为0,1的字段
{
IField field = featureClass.Fields.Field[i]; //当前字段
//是选中或只读字段，则跳过
if (IsSelectOrReadonlyField(selectFieldName, field))
{
continue;
}
featureClass.DeleteField(field);
}
}
private bool TryDeleteAField(IFeatureClass pFeatureClass, string pFieldName)
{
ISchemaLock tSchemaLock = (ISchemaLock)pFeatureClass;
bool successful = false;
try
{
tSchemaLock.ChangeSchemaLock(esriSchemaLock.esriExclusiveSchemaLock);
int tDeleteFieldNum = pFeatureClass.Fields.FindField(pFieldName);
if (tDeleteFieldNum != -1)
{
IField tDeleteField = pFeatureClass.Fields.get_Field(tDeleteFieldNum);
pFeatureClass.DeleteField(tDeleteField);
successful = true;
}
else
{
logger.LogMessage(ServerLogger.msgType.debug, "DeleteAField", 8000,
"Couldn't find field requested for deletion: " + pFieldName + " from feature class!");
}
}
catch (Exception ex)
{
logger.LogMessage(ServerLogger.msgType.debug, "DeleteAField", 8000,
"Couldn't delete field " + pFieldName + " from feature class! " + ex.Message);
}
finally
{
tSchemaLock.ChangeSchemaLock(esriSchemaLock.esriSharedSchemaLock);
}
return successful;
}
private void OpenCADFile(string filePath, string outputFilePath)
{
try
{
Debug.WriteLine("Start Time: " + DateTime.Now.ToShortTimeString());
System.Windows.Forms.Cursor.Current = Cursors.WaitCursor;
String nameOfPath = System.IO.Path.GetDirectoryName(filePath);
String nameOfCADFile = System.IO.Path.GetFileName(filePath);
#region Open CAD Workspace from File Path
//Set the workspace.
ESRI.ArcGIS.Geodatabase.IWorkspaceFactory pWorkspaceFact = new
ESRI.ArcGIS.DataSourcesFile.CadWorkspaceFactory();
ESRI.ArcGIS.Geodatabase.IWorkspaceFactory defaultWorkspaceFact = new FileGDBWorkspaceFactory();
//Open the workspace.
ESRI.ArcGIS.Geodatabase.IWorkspace pWorkspace = pWorkspaceFact.OpenFromFile(nameOfPath, 0);
//Get the CADDrawingWorkspace.
ESRI.ArcGIS.DataSourcesFile.ICadDrawingWorkspace pCadDwgWorkspace;
pCadDwgWorkspace = (ESRI.ArcGIS.DataSourcesFile.ICadDrawingWorkspace)pWorkspace;
//Open the CadDrawingDataset.
ESRI.ArcGIS.DataSourcesFile.ICadDrawingDataset pCadDwgDataset;
pCadDwgDataset = pCadDwgWorkspace.OpenCadDrawingDataset(nameOfCADFile);
//Set the feature workspace.
ESRI.ArcGIS.Geodatabase.IFeatureWorkspace pFeatureWorkspace = (ESRI.ArcGIS.Geodatabase.IFeatureWorkspace)pWorkspace;
//Open the Feature Class.
#endregion
#region Getting Polygon, polylines, and annotation from Cad file
ESRI.ArcGIS.Geodatabase.IFeatureClass pFeatClass =
pFeatureWorkspace.OpenFeatureClass(System.String.Concat(nameOfCADFile,
":Polygon"));
ESRI.ArcGIS.Geodatabase.IFeatureClass pFeatClass_Plyline =
pFeatureWorkspace.OpenFeatureClass(System.String.Concat(nameOfCADFile,
":Polyline"));
ESRI.ArcGIS.Geodatabase.IFeatureClass pFeatClass_Anno =
pFeatureWorkspace.OpenFeatureClass(System.String.Concat(nameOfCADFile,
":Annotation"));
#endregion
UID CLSID_def = new UIDClass();
CLSID_def.Value = "esriGeoDatabase.Feature";
#region Creating Layers from Feature Classes
//Polygons
ESRI.ArcGIS.Carto.IFeatureLayer pFeatLayer = new ESRI.ArcGIS.Carto.CadFeatureLayer()
as ESRI.ArcGIS.Carto.IFeatureLayer;
pFeatLayer.FeatureClass = pFeatClass;
pFeatLayer.Name = "Polygons";
ESRI.ArcGIS.DataSourcesFile.ICadDrawingLayers pCadDwgLayers = (ESRI.ArcGIS.DataSourcesFile.ICadDrawingLayers)pFeatLayer;
//Annotation
ESRI.ArcGIS.Carto.IFeatureLayer pFeatLayer_Anno = new ESRI.ArcGIS.Carto.CadFeatureLayer()
as ESRI.ArcGIS.Carto.IFeatureLayer;
pFeatLayer_Anno.FeatureClass = pFeatClass_Anno;
pFeatLayer_Anno.Name = "Annotation";
ESRI.ArcGIS.DataSourcesFile.ICadDrawingLayers pCadDwgLayers_Anno =
(ESRI.ArcGIS.DataSourcesFile.ICadDrawingLayers)pFeatLayer_Anno;
//Polylines
ESRI.ArcGIS.Carto.IFeatureLayer pFeatLayer_Plyline = new ESRI.ArcGIS.Carto.CadFeatureLayer()
as ESRI.ArcGIS.Carto.IFeatureLayer;
pFeatLayer_Plyline.FeatureClass = pFeatClass_Plyline;
pFeatLayer_Plyline.Name = "Polylines";
ESRI.ArcGIS.DataSourcesFile.ICadDrawingLayers pCadDwgLayers_Plyline =
(ESRI.ArcGIS.DataSourcesFile.ICadDrawingLayers)pFeatLayer_Plyline;
#endregion
#region Creating In-Memory workspace
IWorkspaceFactory WF = new InMemoryWorkspaceFactory();
ESRI.ArcGIS.esriSystem.IName name = WF.Create("", "MyWorkspace", null, 0) as ESRI.ArcGIS.esriSystem.IName;
IWorkspace inMemWorkspace = (IWorkspace)name.Open();
IFeatureWorkspace featureWorkspace = (IFeatureWorkspace)inMemWorkspace;
#endregion
#region Creating new Fields
IObjectClassDescription objectClassDescription = new FeatureClassDescription();
// create the fields using the required fields method
IFields exportFields = new Fields();
IFieldsEdit fieldsEdit = (IFieldsEdit)exportFields;
//OID
IField field = new Field();
IField oidField = new Field();
IFieldEdit oidFieldEdit = (IFieldEdit)oidField;
oidFieldEdit.Name_2 = "OID";
oidFieldEdit.Type_2 = esriFieldType.esriFieldTypeOID;
fieldsEdit.AddField(oidField);
// Create a geometry definition (and spatial reference) for the feature class
IGeometryDef geometryDef = new GeometryDef();
IGeometryDefEdit geometryDefEdit = (IGeometryDefEdit)geometryDef;
geometryDefEdit.GeometryType_2 = esriGeometryType.esriGeometryPolygon;
IGeoDataset dataSet = (IGeoDataset)pFeatClass.FeatureDataset;
ISpatialReferenceFactory spatialReferenceFactory = new SpatialReferenceEnvironment();
ISpatialReference spatialReference = dataSet.SpatialReference;
ISpatialReferenceResolution spatialReferenceResolution = (ISpatialReferenceResolution)spatialReference;
spatialReferenceResolution.ConstructFromHorizon();
ISpatialReferenceTolerance spatialReferenceTolerance = (ISpatialReferenceTolerance)spatialReference;
spatialReferenceTolerance.SetDefaultXYTolerance();
geometryDefEdit.SpatialReference_2 = spatialReference;
// Add a geometry field to the fields collection. This is where the geometry definition is applied.
IField geometryField = new Field();
IFieldEdit geometryFieldEdit = (IFieldEdit)geometryField;
geometryFieldEdit.Name_2 = "Shape";
geometryFieldEdit.Type_2 = esriFieldType.esriFieldTypeGeometry;
geometryFieldEdit.GeometryDef_2 = geometryDef;
fieldsEdit.AddField(geometryField);
#endregion
#region Creating New Shapefile for Final output
UID CLSID = new UIDClass();
CLSID.Value = "esriGeoDatabase.Feature";
//using the In-Memory Workspace created above
IFeatureClass output = featureWorkspace.CreateFeatureClass("myPolygons", pFeatClass.Fields, CLSID, null, esriFeatureType.esriFTSimple, "Shape", null);
IFeatureClass polylines_cleaned = featureWorkspace.CreateFeatureClass("polylines_cleaned", pFeatClass_Plyline.Fields, CLSID, null, esriFeatureType.esriFTSimple, "Shape", null);
IFeatureClass annotation_cleaned = featureWorkspace.CreateFeatureClass("annotation_cleaned", pFeatClass_Anno.Fields, CLSID, null, esriFeatureType.esriFTSimple, "Shape", null);
#endregion
#region Appending features from CADWorkspaceFeatureClass to In-Memory FeatureClass Because Update cursor not in Cad workspace
Geoprocessor GP = new Geoprocessor();
//Polylines
ESRI.ArcGIS.DataManagementTools.Append append = new Append();
append.inputs = pFeatClass_Plyline;
append.target = polylines_cleaned;
GP.Execute(append, null);
//System.Runtime.InteropServices.Marshal.ReleaseComObject(pFeatClass_Plyline);
GC.Collect();
//Annotation
append = new Append();
append.inputs = pFeatClass_Anno;
append.target = annotation_cleaned;
GP.Execute(append, null);
System.Runtime.InteropServices.Marshal.ReleaseComObject(pFeatClass_Anno);
GC.Collect();
//Polygons to output
append = new Append();
append.inputs = pFeatClass;
append.target = output;
GP.Execute(append, null);
System.Runtime.InteropServices.Marshal.ReleaseComObject(pFeatClass);
GC.Collect();
#endregion
#region Query Filter to Filter Layers
string queryString = "";
//using the checked box list and comma seperated list to create where clause string
//Adding Items from Check Box List
foreach (var checkedItem in checkedListBox1.CheckedItems)
{
queryString = queryString + "Layer NOT LIKE '" + checkedItem.ToString() + "' AND ";
}
//Adding Items from Comma separated string
if (textBox_commaSeparated.Text.Length > 0)
{
foreach (var item in textBox_commaSeparated.Text.Split(','))
{
queryString = queryString + "Layer NOT LIKE '" + item.ToString() + "' AND ";
}
}
//Removing Last 'AND' FROM queryString
if (queryString.Length > 0) //if Atleast one item added
{
queryString = queryString.Remove(queryString.Length - 4);
}
IQueryFilter queryFilter = new QueryFilter();
queryFilter.SubFields = "";
if (queryString.Length > 0)
{
queryFilter.WhereClause = queryString;
}
else
{
queryFilter.WhereClause = "1=1";
}
#endregion
#region Removing Null Geometries
string ignoreList = queryString.Replace("Layer NOT LIKE '", "").Replace("' AND ", ",").Replace("' ", "");
Debug.WriteLine("lines Count before:" + polylines_cleaned.FeatureCount(new QueryFilter()).ToString());
//From Polylines_cleaned
IFeatureCursor updateCursor = polylines_cleaned.Update(new QueryFilter(), false);
IFeature feat = updateCursor.NextFeature();
while (feat != null)
{
string lyr = Convert.ToString(feat.get_Value(feat.Fields.FindField("Layer")));
lyr = lyr.ToUpper();
if (feat.Shape.IsEmpty || ignoreList.ToUpper().Split(',').ToList <string>().Any(l => lyr.Contains(l)))
{
updateCursor.DeleteFeature();
}
feat = updateCursor.NextFeature();
}
System.Runtime.InteropServices.Marshal.ReleaseComObject(updateCursor);
//System.Runtime.InteropServices.Marshal.ReleaseComObject(feat);
GC.Collect();
Debug.WriteLine("lines Count After:" + polylines_cleaned.FeatureCount(new QueryFilter()).ToString());
//From output
Debug.WriteLine("polygons Count before:" + output.FeatureCount(new QueryFilter()).ToString());
updateCursor = output.Update(new QueryFilter(), false);
feat = updateCursor.NextFeature();
while (feat != null)
{
string lyr = Convert.ToString(feat.get_Value(feat.Fields.FindField("Layer")));
lyr = lyr.ToUpper();
if (feat.Shape.IsEmpty || ignoreList.ToUpper().Split(',').ToList <string>().Any(l => lyr.Contains(l)))
{
updateCursor.DeleteFeature();
}
feat = updateCursor.NextFeature();
}
System.Runtime.InteropServices.Marshal.ReleaseComObject(updateCursor);
GC.Collect();
Debug.WriteLine("polygons Count after:" + output.FeatureCount(new QueryFilter()).ToString());
//From Annotation
Debug.WriteLine("Annotation Count before:" + annotation_cleaned.FeatureCount(new QueryFilter()).ToString());
updateCursor = annotation_cleaned.Update(new QueryFilter(), false);
feat = updateCursor.NextFeature();
while (feat != null)
{
string lyr = Convert.ToString(feat.get_Value(feat.Fields.FindField("Layer")));
lyr = lyr.ToUpper();
if (feat.Shape.IsEmpty || ignoreList.ToUpper().Split(',').ToList <string>().Any(l => lyr.Contains(l)))
{
updateCursor.DeleteFeature();
}
feat = updateCursor.NextFeature();
}
System.Runtime.InteropServices.Marshal.ReleaseComObject(updateCursor);
GC.Collect();
Debug.WriteLine("Annotation Count after:" + annotation_cleaned.FeatureCount(new QueryFilter()).ToString());
#endregion
#region Convert lines feature class to feature Cursor
IFeatureCursor linesFCursor = polylines_cleaned.Search(new QueryFilter(), false);
#endregion
#region Deleting all columns of polygons to match with output
IFields _fieldsP = output.Fields;
IFieldsEdit _fieldsEditP = (IFieldsEdit)_fieldsP;
for (int i = 0; i < output.Fields.FieldCount; i++)
{
IField _field = output.Fields.get_Field(i);
if (_field.Name != "Shape" && _field.Name != "FID")
{
output.DeleteField(_field);
if (i < output.Fields.FieldCount)
{
i--;
}
}
}
System.Runtime.InteropServices.Marshal.ReleaseComObject(_fieldsP);
System.Runtime.InteropServices.Marshal.ReleaseComObject(_fieldsEditP);
GC.Collect();
#endregion
#region Setting Envelop information
IEnvelope envelop = new Envelope() as IEnvelope;
IGeoDataset dataSetEnv = (IGeoDataset)pFeatClass_Plyline.FeatureDataset;
envelop.SpatialReference = dataSet.SpatialReference;
envelop.PutCoords(dataSet.Extent.XMin, dataSet.Extent.YMin, dataSet.Extent.XMax, dataSet.Extent.YMax);
#endregion
#region Construct Polygons from Lines Cursor (usting Feature Construct)
IFeatureConstruction featureConstruct = new FeatureConstruction() as IFeatureConstruction;
ISelectionSet selectionSet = null;
//atureConstruct.ConstructPolygonsFromFeaturesFromCursor(null,output,envelop,false,false,linesFCursor,null,0.001,null);
featureConstruct.AutoCompleteFromFeaturesFromCursor(output, envelop, linesFCursor, null, -1, null, out selectionSet);
#endregion
System.Runtime.InteropServices.Marshal.ReleaseComObject(featureConstruct);
System.Runtime.InteropServices.Marshal.ReleaseComObject(linesFCursor);
GC.Collect();
Debug.WriteLine("polygons Count after PolygonConstruct :" + output.FeatureCount(new QueryFilter()).ToString());
#region SPATIAL JOIN
GP = new Geoprocessor();
ESRI.ArcGIS.AnalysisTools.SpatialJoin spatialJoin = new ESRI.ArcGIS.AnalysisTools.SpatialJoin();
spatialJoin.join_features = annotation_cleaned;
spatialJoin.target_features = output;
spatialJoin.join_operation = "JOIN_ONE_TO_MANY";
spatialJoin.join_type = "KEEP_ALL";
spatialJoin.match_option = "CONTAINS";
spatialJoin.out_feature_class = outputFilePath;
GP.Execute(spatialJoin, null);
System.Runtime.InteropServices.Marshal.ReleaseComObject(annotation_cleaned);
GC.Collect();
#endregion
#region Remove All Fields of Annotation except Text
ShapefileWorkspaceFactory wsf = new ShapefileWorkspaceFactory();
IFeatureWorkspace work = (IFeatureWorkspace)wsf.OpenFromFile(System.IO.Path.GetDirectoryName(outputFilePath), 0);
IFeatureClass output_AfterJoin_FClasss = work.OpenFeatureClass(System.IO.Path.GetFileNameWithoutExtension(outputFilePath));
IFields _fields = output_AfterJoin_FClasss.Fields;
IFieldsEdit _fieldsEdit = (IFieldsEdit)_fields;
for (int i = 0; i < _fields.FieldCount; i++)
{
IField _field = output_AfterJoin_FClasss.Fields.get_Field(i);
if (_field.Name != "Text_" && _field.Name != "Text" && _field.Name != "Shape" && _field.Name != "FID")
{
output_AfterJoin_FClasss.DeleteField(_field);
i--;
}
else
{
if (field.Name == "Text_" || _field.Name == "Text")
{
IFieldEdit fieldEdit = (IFieldEdit)_field;
fieldEdit.Name_2 = "PlotNumber";
fieldEdit.AliasName_2 = "PlotNumber";
}
}
}
System.Runtime.InteropServices.Marshal.ReleaseComObject(_fields);
System.Runtime.InteropServices.Marshal.ReleaseComObject(_fieldsEdit);
GC.Collect();
#endregion
System.Windows.Forms.Cursor.Current = Cursors.Default;
Debug.WriteLine("End Time: " + DateTime.Now.ToShortTimeString());
MessageBox.Show("Import Complete!");
}
catch
{
MessageBox.Show("Error Importing. Something wrong with the CAD File");
}
}
private void deleteFieldToolStripMenuItem_Click(object sender, EventArgs e)
{
string fieldInfo_name = selectNode.Text;
string fc_name = selectNode.Parent.Text;
string set_name = selectNode.Parent.Parent.Text;
myTreeNode node = (myTreeNode)selectNode.Parent.Parent.Parent;
IConnectionInfo ci = node.con;
IDataSource ds = null;
IFeatureDataSet dset = null;
IFeatureClass fc = null;
try
{
ds = dsFactory.OpenDataSource(ci);
dset = ds.OpenFeatureDataset(set_name);
fc = dset.OpenFeatureClass(fc_name);
if (fieldInfo_name == "oid")
{
MessageBox.Show("此字段不支持删除");
return;
}
if (MessageBox.Show("该操作无法恢复，请确定是否删除字段？", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Warning) == DialogResult.OK)
{
fc.LockType = gviLockType.gviLockExclusiveSchema;
fc.DeleteField(fieldInfo_name);
fc.LockType = gviLockType.gviLockSharedSchema;
// 从树上删除节点
selectNode.Parent.Nodes.Remove(selectNode);
MessageBox.Show("删除成功");
}
}
catch (COMException comEx)
{
System.Diagnostics.Trace.WriteLine(comEx.Message);
MessageBox.Show("删除失败");
}
catch (System.Exception ex)
{
System.Diagnostics.Trace.WriteLine(ex.Message);
MessageBox.Show("删除失败");
}
finally
{
fc.LockType = gviLockType.gviLockSharedSchema;
if (fc != null)
{
//Marshal.ReleaseComObject(fc);
fc = null;
}
if (dset != null)
{
//Marshal.ReleaseComObject(dset);
dset = null;
}
if (ds != null)
{
//Marshal.ReleaseComObject(ds);
ds = null;
}
}
}
public void delteField(IFeatureClass featureClass, string fldNm)
{
ISchemaLock schemaLock = (ISchemaLock)featureClass;
try
{
// A try block is necessary, as an exclusive lock might not be available.
schemaLock.ChangeSchemaLock(esriSchemaLock.esriExclusiveSchemaLock);
int fldIndex = featureClass.FindField(fldNm);
featureClass.DeleteField(featureClass.Fields.get_Field(fldIndex));
}
catch (Exception exc)
{
// Handle appropriately for your application.
Console.WriteLine(exc.Message);
//MessageBox.Show(exc.Message);
}
finally
{
// Set the lock to shared, whether or not an error occurred.
schemaLock.ChangeSchemaLock(esriSchemaLock.esriSharedSchemaLock);
}
}
private void CreateField()
{
if (_editor.EditState != esriEditState.esriStateNotEditing)
{
MessageBox.Show("Stop Editing First", MB_TITLE, MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
if (cbo_layers.SelectedIndex < 0)
{
MessageBox.Show("Select A Layer", MB_TITLE, MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
CustomLayer customLayer = (CustomLayer)cbo_layers.SelectedItem;
IFeatureClass FeatureClass = customLayer.FeatureClass();
IFields fields = FeatureClass.Fields;
int fieldIndex = _utilitiesArcMap.FindField(FeatureClass, FIELD_NAME);
if (fieldIndex > -1)
{
IField field = FeatureClass.Fields.Field[fieldIndex];
if (field.Type != esriFieldType.esriFieldTypeString)
{
if (MessageBox.Show("Field exists as wrong field type. It needs to be 'Text' Field. Should I delete and re-create?",
MB_TITLE, MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)
{
return;
}
FeatureClass.DeleteField(field);
}
else
{
if (field.Length < 20)
{
if (MessageBox.Show("Field exists as wrong size. It needs to be at least 20 in length. Should I delete and re-create?",
MB_TITLE, MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.No)
{
return;
}
FeatureClass.DeleteField(field);
}
else
{
return;
}
}
}
IFieldEdit2 newField = new FieldClass() as IFieldEdit2;
newField.Name_2 = FIELD_NAME;
newField.Type_2 = esriFieldType.esriFieldTypeString;
newField.Length_2 = 20;
newField.DefaultValue_2 = "Unchecked";
ISchemaLock schemaLock = (ISchemaLock)FeatureClass;
try
{
schemaLock.ChangeSchemaLock(esriSchemaLock.esriExclusiveSchemaLock);
FeatureClass.AddField(newField);
}
catch
{
MessageBox.Show("Cannot Aquire Exclusive Lock. Did Not Add Field", MB_TITLE, MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
schemaLock.ChangeSchemaLock(esriSchemaLock.esriSharedSchemaLock);
}
}