/// <summary>
/// Deletes the anno features in feature layer.
/// </summary>
/// <param name="featureLayer">The feature layer.</param>
public static void DeleteAnnoFeaturesInFeatureLayer(IFeatureLayer featureLayer)
{
if (featureLayer == null)
{
return;
}
IFeatureClass featureClass = featureLayer.FeatureClass;
IDataset dataset = featureClass as IDataset;
IWorkspace pWorkspace = dataset.Workspace;
IWorkspaceEdit pWorkspaceEdit = pWorkspace as IWorkspaceEdit;
pWorkspaceEdit.StartEditing(true);
pWorkspaceEdit.StartEditOperation();
IWorkspaceProperties2 workspaceProperties2 = (IWorkspaceProperties2)pWorkspace;
//判断workspace是否可以执行SQL语句
IWorkspaceProperty canExecuteSqlProperty =
workspaceProperties2.get_Property(esriWorkspacePropertyGroupType.esriWorkspacePropertyGroup,
(int)esriWorkspacePropertyType.esriWorkspacePropCanExecuteSQL);
if (canExecuteSqlProperty.IsSupported)
{
//ExecuteSQL删除feature
pWorkspace.ExecuteSQL("delete from " + featureClass.AliasName + " where objectid >=0");
}
pWorkspaceEdit.StopEditOperation();
pWorkspaceEdit.StopEditing(true);
}
/// <summary>
// 创建要素数据集
/// </summary>
/// <param name="workspace"></param>
/// <param name="code"></param>
/// <param name="datasetName"></param>
/// <returns></returns>
public IFeatureDataset CreateFeatureClass(IWorkspace workspace, int code, string datasetName)
{
IFeatureWorkspace featureWorkspace = (IFeatureWorkspace)workspace;
//创建一个要素集创建一个投影
ISpatialReferenceFactory spatialRefFactory = new SpatialReferenceEnvironmentClass();
ISpatialReference spatialReference = spatialRefFactory.CreateProjectedCoordinateSystem(code);
//确定是否支持高精度存储空间
Boolean supportsHighPrecision = false;
IWorkspaceProperties workspaceProperties = (IWorkspaceProperties)workspace;
IWorkspaceProperty workspaceProperty = workspaceProperties.get_Property
(esriWorkspacePropertyGroupType.esriWorkspacePropertyGroup,
(int)esriWorkspacePropertyType.esriWorkspacePropSupportsHighPrecisionStorage);
if (workspaceProperty.IsSupported)
{
supportsHighPrecision = Convert.ToBoolean(workspaceProperty.PropertyValue);
}
//设置投影精度
IControlPrecision2 controlPrecision = (IControlPrecision2)spatialReference;
controlPrecision.IsHighPrecision = supportsHighPrecision;
//设置容差
ISpatialReferenceResolution spatialRefResolution = (ISpatialReferenceResolution)spatialReference;
spatialRefResolution.ConstructFromHorizon();
spatialRefResolution.SetDefaultXYResolution();
ISpatialReferenceTolerance spatialRefTolerance = (ISpatialReferenceTolerance)spatialReference;
spatialRefTolerance.SetDefaultXYTolerance();
//创建要素集
IFeatureDataset featureDataset = featureWorkspace.CreateFeatureDataset(datasetName, spatialReference);
return(featureDataset);
}
private static void LogWorkspaceProperties(
[NotNull] IWorkspaceProperties props,
params esriWorkspacePropertyType[] propertyTypes)
{
var watch = new Stopwatch();
foreach (esriWorkspacePropertyType propertyType in propertyTypes)
{
watch.Reset();
watch.Start();
IWorkspaceProperty property =
props.Property[
esriWorkspacePropertyGroupType.esriWorkspacePropertyGroup,
(int)propertyType];
watch.Stop();
if (property.IsSupported)
{
Console.WriteLine(@"{0}: {1} ({2:N6} ms)",
propertyType,
property.PropertyValue,
watch.ElapsedTicks / (double)TimeSpan.TicksPerMillisecond);
}
else
{
Console.WriteLine(@"{0}: {1} [not supported] ({2:N6} ms)",
propertyType,
property.PropertyValue,
watch.ElapsedTicks / (double)TimeSpan.TicksPerMillisecond);
}
}
}
public static bool IsConnectedToGeodatabase(IWorkspace iworkspace_0)
{
IWorkspaceProperty property =
((IWorkspaceProperties)iworkspace_0).Property[
esriWorkspacePropertyGroupType.esriWorkspacePropertyGroup, 7];
return(Convert.ToBoolean(property.PropertyValue));
}
public static void ClearFeaturesInFeatureLayer(IFeatureLayer featureLayer)
{
if (featureLayer == null)
{
return;
}
IFeatureClass featureClass = featureLayer.FeatureClass;
IDataset dataset = featureClass as IDataset;
IWorkspace pWorkspace = dataset.Workspace;
IWorkspaceProperties2 workspaceProperties2 = pWorkspace as IWorkspaceProperties2;
//判断workspace是否可以执行SQL语句
IWorkspaceProperty canExecuteSqlProperty =
workspaceProperties2.Property[
esriWorkspacePropertyGroupType.esriWorkspacePropertyGroup,
(int)esriWorkspacePropertyType.esriWorkspacePropCanExecuteSQL];
if (canExecuteSqlProperty.IsSupported)
{
//ExecuteSQL删除feature
pWorkspace.ExecuteSQL("delete from " + featureClass.AliasName + " where objectid >=0");
}
}
// Todo - what to do here?
public void set_Property(esriWorkspacePropertyGroupType propertyGroup, int PropertyType, IWorkspaceProperty WorkspaceProperty)
{
throw new Exception("The method or operation is not implemented.");
}
