private bool SelectFeatures()
{
try
{
string strTemp = (string)this.cboFields.SelectedItem;
string strFieldAliasName = strTemp;//.Substring(1, strTemp.Length - 2);
string strFieldName = m_FieldTable[strFieldAliasName].ToString();
IFeatureClass pFtCls = m_FeatureLayer.FeatureClass;
int nFieldIndex = pFtCls.Fields.FindField(strFieldName);
string strWhereClause = "";
if (pFtCls.Fields.get_Field(nFieldIndex).Type == esriFieldType.esriFieldTypeString)
{
strWhereClause = strFieldName + " = '" + (string)this.cboFieldsValue.SelectedItem + "'";
}
else
{
strWhereClause = strFieldName + " =" + (string)this.cboFieldsValue.SelectedItem;
}
if (m_FeatureLayer == null)
{
return(false);
}
IQueryFilter _queryFilter;
IFeatureSelection _featureSelection;
_featureSelection = m_FeatureLayer as IFeatureSelection;
_queryFilter = new QueryFilterClass();
_queryFilter.SubFields = "*";
_queryFilter.WhereClause = strWhereClause;
m_Map.ClearSelection();
_featureSelection.SelectFeatures(_queryFilter, esriSelectionResultEnum.esriSelectionResultNew, false);
if (_featureSelection.SelectionSet.Count == 0)
{
XtraMessageBox.Show("没有符合查询条件的要素！", "提示", MessageBoxButtons.OK);
return(false);
}
if (m_FeatureLayer.Visible == false)
{
m_FeatureLayer.Visible = true;
object obj = MapOperAPI.GetLayerParent((IBasicMap)m_Map, (ILayer)m_FeatureLayer);
if (obj is ICompositeLayer)
{
ILayer pParentLayer = (ILayer)obj;
pParentLayer.Visible = true;
}
}
m_activeView.PartialRefresh(esriViewDrawPhase.esriViewGeography, null, null);
}
catch (Exception ex)
{
XtraMessageBox.Show("没有匹配的查询结果，请重新设置查询条件！", "提示");
return(false);
}
return(true);
}
/// <summary>
/// 获取选中图层的字段
/// </summary>
private void GetFields()
{
try
{
string sLayerName = (string)cboLayers.SelectedItem;
IFeatureLayer _featureLayer;
IFeatureClass _featureClass = null;
IFields _fields;
IDataset _dataSet;
_featureLayer = (IFeatureLayer)MapOperAPI.GetLayerFromMapByName(m_Map, sLayerName);
m_FeatureLayer = _featureLayer;
if (_featureLayer != null)
{
_featureClass = _featureLayer.FeatureClass;
}
this.cboFields.Properties.Items.Clear();
this.cboFieldsValue.Properties.Items.Clear();
m_FieldTable = new Hashtable();
if (_featureClass != null)
{
_dataSet = _featureClass as IDataset;
_fields = _featureClass.Fields;
if (_dataSet.Workspace.Type == esriWorkspaceType.esriFileSystemWorkspace ||
_dataSet.Workspace.Type == esriWorkspaceType.esriRemoteDatabaseWorkspace)
{
for (int i = 0; i < _fields.FieldCount; i++)
{
IField pField = _fields.get_Field(i);
if (pField.Type != esriFieldType.esriFieldTypeGeometry &&
pField.Type != esriFieldType.esriFieldTypeBlob &&
pField.Type != esriFieldType.esriFieldTypeRaster)
{
cboFields.Properties.Items.Add(pField.AliasName);
m_FieldTable.Add(pField.AliasName, pField.Name);
//TreeListNode node = this.treeListFields.AppendNode(new object[] { '[' + _fields.get_Field(i).Name + ']', '[' + _fields.get_Field(i).AliasName + ']' }, null);
}
}
}
else if (_dataSet.Workspace.Type == esriWorkspaceType.esriLocalDatabaseWorkspace)
{
for (int i = 0; i < _fields.FieldCount; i++)
{
IField pField = _fields.get_Field(i);
if (pField.Type != esriFieldType.esriFieldTypeGeometry &&
pField.Type != esriFieldType.esriFieldTypeBlob &&
pField.Type != esriFieldType.esriFieldTypeRaster)
{
if (pField.Name.ToUpper().Contains("OBJECTID") || pField.AliasName.ToLower().Contains("shape"))
{
continue;
}
cboFields.Properties.Items.Add(pField.AliasName);
m_FieldTable.Add(pField.AliasName, pField.Name);
//TreeListNode node = this.treeListFields.AppendNode(new object[] { '[' + _fields.get_Field(i).Name + ']', '[' + _fields.get_Field(i).AliasName + ']' }, null);
}
}
}
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
