private void miStat_Click(object sender, EventArgs e)
{
MapAnalysis1 mapAnalysis = new MapAnalysis1();
string msg = mapAnalysis.Statistic("continent", "SQMI", axMapControl1.Map);
MessageBox.Show(msg);
}
private void miSearch_Click(object sender, EventArgs e)
{
MapAnalysis1 mapAnalysis1 = new MapAnalysis1();
mapAnalysis1.Buffer("cities", "NAME='Tangshan'", 1, axMapControl1.Map);
IActiveView activeView = axMapControl1.ActiveView;
activeView = axMapControl1.ActiveView;
activeView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, 0, axMapControl1.Extent);
}