从空间数据库中删除所有拓扑对象

/// <summary>

/// //从空间数据库中删除所有拓扑对象

/// </summary>

/// <returns></returns>

public bool DeleteALLTopolgyFromGISDB()

{

bool rbc = true;

try

{

IWorkspace ws = this.DefaultWorkSpace;

if (ws != null)

{

//读取所有拓扑

IEnumDataset topEnumDataset = this.getEnumDataset(ws);

if (topEnumDataset != null)

{

topEnumDataset.Reset();

IDataset ds = topEnumDataset.Next();

while (ds != null)

{

switch (ds.Type)

{

case esriDatasetType.esriDTFeatureDataset:

if (ds is ITopologyContainer)

{

ITopologyContainer topContainer = ds as ITopologyContainer;

ISchemaLock schemaLock = (ISchemaLock)ds;

try

{

schemaLock.ChangeSchemaLock(esriSchemaLock.esriExclusiveSchemaLock);

int tc = topContainer.TopologyCount;

for (int i = tc - 1; i >= 0; i--)

{

ITopology top = topContainer.get_Topology(i);

if (top != null && top is IDataset)

{

//delete top's ITopologyRuleContainer

ITopologyRuleContainer topruleList = top as ITopologyRuleContainer;

IEnumRule ER = topruleList.Rules;

ER.Reset();

IRule r = ER.Next();

while (r != null && r is ITopologyRule)

{

topruleList.DeleteRule(r as ITopologyRule);

r = ER.Next();

}

//delete top's featureclass

IFeatureClassContainer topFcList = top as IFeatureClassContainer;

for (int d = topFcList.ClassCount - 1; d >= 0; d--)

{

top.RemoveClass(topFcList.get_Class(d) as IClass);

}

//delete top object

(top as IDataset).Delete();

rbc = true;

}

}

}

catch (Exception ex)

{

AppLogErrWrite.WriteErrLog(ex.ToString());

}

finally

{

schemaLock.ChangeSchemaLock(esriSchemaLock.esriSharedSchemaLock);

}

}

break;

case esriDatasetType.esriDTFeatureClass:

break;

}

System.Runtime.InteropServices.Marshal.ReleaseComObject(ds);

ds = topEnumDataset.Next();

}

System.Runtime.InteropServices.Marshal.ReleaseComObject(topEnumDataset);

}//

} //end ws!=null

}

catch (Exception ee)

{

rbc = false;

AppLogErrWrite.WriteErrLog(ee.ToString());

}

return rbc;

}