private void buttonApply_Click(object sender, EventArgs e)
{
IActiveView pActiveView;
pActiveView = m_MapControl.ActiveView;
m_MapControl.Map.ClearSelection();
if (textBoxWhereClause.Text == "")
{
MessageBox.Show("Please create query clause!");
return;
}
try
{
IQueryFilter pQueryFilter = new QueryFilterClass();
pQueryFilter.WhereClause = textBoxWhereClause.Text;
IFeatureSelection pFeatureSelection = this.pFeatureLayer as IFeatureSelection;
int iSelectedFeaturesCount = pFeatureSelection.SelectionSet.Count;
esriSelectionResultEnum selectMethod;
switch (comboBoxMethod.SelectedIndex)
{
case 0: selectMethod = esriSelectionResultEnum.esriSelectionResultNew; break;
case 1: selectMethod = esriSelectionResultEnum.esriSelectionResultAdd; break;
case 2: selectMethod = esriSelectionResultEnum.esriSelectionResultSubtract; break;
case 3: selectMethod = esriSelectionResultEnum.esriSelectionResultAnd; break;
default: selectMethod = esriSelectionResultEnum.esriSelectionResultNew; break;
}
pFeatureSelection.SelectFeatures(pQueryFilter, selectMethod, false);//执行查询
//如果本次查询后，查询的结果数目没有改变，则认为本次查询没有产生新的结果
if (pFeatureSelection.SelectionSet.Count == 0)
{
MessageBox.Show("No results!");
return;
}
//pFeatureSelection.SelectionSet.Count == iSelectedFeaturesCount ||
IEnumFeature pEnumFeature = m_MapControl.Map.FeatureSelection as IEnumFeature;
int nFeatureSize = 0;
pEnumFeature.Reset();
IFeature pFeature = pEnumFeature.Next();
while (pFeature != null)
{
nFeatureSize++;
pFeature = pEnumFeature.Next();
}
IEnvelope pEnvelope = new EnvelopeClass();
IFeatureClass pFeatureClass = pFeatureLayer.FeatureClass;
double dScale = (this.pFeatureLayer.MinimumScale + this.pFeatureLayer.MaximumScale) / 2;
ESRI.ArcGIS.Controls.IMapControl3 pMaps = (ESRI.ArcGIS.Controls.IMapControl3)m_MapControl.Object;
bool bRec = true;
while (bRec)
{
pEnumFeature.Reset();
pFeature = pEnumFeature.Next();
int i = 0;
while (pFeature != null)//将目标中心显示
{
pEnvelope = pFeature.Extent;
IPoint pCenterPt = new PointClass();
pCenterPt.X = (pEnvelope.XMax + pEnvelope.XMin) / 2;
pCenterPt.Y = (pEnvelope.YMax + pEnvelope.YMin) / 2;
IEnvelope pMapEntent = pActiveView.Extent;
pMapEntent.CenterAt(pCenterPt);
pActiveView.Extent = pMapEntent;
pMaps.MapScale = dScale;
pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, pActiveView.Extent);
pActiveView.PartialRefresh(esriViewDrawPhase.esriViewBackground, null, pActiveView.Extent);
Application.DoEvents();
MapView.FlashFeature(m_MapControl, pFeature.Shape);//目标闪烁
Application.DoEvents();
i++;
if (nFeatureSize >= 2 && i < nFeatureSize - 1)
{
this.Visible = false;
DialogResult pRes = MessageBox.Show("Is this feature?", "Sure", MessageBoxButtons.YesNoCancel);
if (pRes == DialogResult.Yes)
{
this.Visible = true;
return;
}
else if (pRes == DialogResult.Cancel)
{
return;
}
}
pFeature = pEnumFeature.Next();
}
if (nFeatureSize <= 1)
{
return;
}
DialogResult pDlgRes = MessageBox.Show("It is already last one, restart?", "Sure", MessageBoxButtons.YesNo);
if (pDlgRes == DialogResult.Yes)
{
continue;
}
else
{
return;
}
}
//for (int i = 0; i < pArray.Count; i++)
//{
// int nOID = (int)pArray.get_Element(i);
// pFeature = pFeatureClass.GetFeature(nOID);
// pEnvelope = pFeature.Extent;
// IPoint pCenterPt = new PointClass();
// pCenterPt.X = (pEnvelope.XMax + pEnvelope.XMin) / 2;
// pCenterPt.Y = (pEnvelope.YMax + pEnvelope.YMin) / 2;
// IEnvelope pMapEntent = pActiveView.Extent;
// pMapEntent.CenterAt(pCenterPt);
// pActiveView.Extent = pMapEntent;
// pMaps.MapScale = dScale;
// pActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, null);
// pActiveView.PartialRefresh(esriViewDrawPhase.esriViewBackground, null, null);
// Application.DoEvents();
// MapView.FlashFeature(m_MapControl, pFeature.Shape);
// Application.DoEvents();
// if (pArray.Count > 1 && i < pArray.Count - 1)
// {
// if (DevComponents.DotNetBar.MessageBox.Show("是否为这个目标", "确认", MessageBoxButtons.YesNo) == DialogResult.Yes)
// {
// return;
// }
// }
//}
//double i = MainAxMapControl.Map.SelectionCount;
//i = Math.Round(i, 0);//小数点后指定为０位数字
//pMainform.toolStripStatusLabel1.Text = "当前共有" + i.ToString() + "个查询结果";
}
catch (Exception ex)
{
MessageBox.Show("The clause has errors, please double check!\n" + ex.Message);
return;
}
}
public override void OnCreate(object hook)
{
// The hook for OnCreate is set as a MapControl in frmMain_Load
m_mapControl = hook as ESRI.ArcGIS.Controls.IMapControl3;
}
public override void OnCreate(object hook)
{
// The "hook" was set as a MapControl in formMain_Load
m_mapControl = hook as ESRI.ArcGIS.Controls.IMapControl3;
}