private void listBoxSearchResult_DoubleClick(object sender, System.EventArgs e)
{
// get the selected object
string selectedCloseMatch = (string)this.listBoxSearchResult.SelectedItem;
// get the selected object index in the list as well since multiple matches
// may have the same name - we can't just compare close match names.
int selectedIndex = this.listBoxSearchResult.SelectedIndex;
int currentIndex = 0;
// create a close match object
FindCloseMatch closeMatch = null;
// create an enumerator from the results
FindCloseMatchEnumerator enumerator = _result.GetCloseMatchEnumerator();
while (enumerator.MoveNext())
{
// if the selected name equals the enumerated name...
if (currentIndex == selectedIndex && selectedCloseMatch.Equals(enumerator.Current.Name))
{
// set the close match object
closeMatch = enumerator.Current;
// break out of the loop
break;
}
// else keep looking
currentIndex++;
}
if (closeMatch != null)
{
// create the command string
string command = "select obj from " + _searchTable.Alias + " where MI_Key = \'" + closeMatch.Key + "\'";
// create the command object
MICommand cmd = _miConnection.CreateCommand();
cmd.CommandText = command;
// create the reader by executing the command
MIDataReader rdr = cmd.ExecuteReader();
// read a row
rdr.Read();
// get the point
MapInfo.Geometry.DPoint point = rdr.GetFeatureGeometry(0).Centroid;
// Close the reader and dispose of the command.
rdr.Close();
cmd.Cancel();
cmd.Dispose();
// show point on a map
showPointOnSearchTableMap(point.x, point.y);
}
}
// Gets RasterInfo from a given table.
// Each raster table has exactly one associated raster image, and thus only one record.
// Reading that record with a data reader, we can get
// a FeatureGeometry - a bounding rectangle,
// a Style - the Raster style,
// a key
// a RasterInfo object.
private MapInfo.Raster.RasterInfo GetRasterInfo(Table table)
{
MapInfo.Raster.RasterInfo rasterInfo = null;
MIDataReader rdr = null;
string projectionlist = "obj, MI_Key, MI_Raster, MI_Style";
rdr = table.ExecuteReader(projectionlist);
string name;
string typename;
int n = rdr.FieldCount;
MapInfo.Styles.Style style;
MapInfo.Geometry.FeatureGeometry featureGeometry;
MapInfo.Data.Key key;
if (rdr.Read())
{
for (int i = 0; i < rdr.FieldCount; i++)
{
name = rdr.GetName(i);
typename = rdr.GetDataTypeName(i);
if (typename == "MapInfo.Styles.Style")
{
style = rdr.GetStyle(i);
}
else if (typename == "MapInfo.Geometry.FeatureGeometry")
{
featureGeometry = rdr.GetFeatureGeometry(i);
}
else if (typename == "MapInfo.Data.Key")
{
key = rdr.GetKey(i);
}
else if (typename == "MapInfo.Raster.RasterInfo")
{
rasterInfo = rdr.GetRasterInfo(i);
}
}
}
rdr.Close();
rdr.Dispose();
rdr = null;
return(rasterInfo);
}
public void SelectAllIndivColumns()
{
MIDataReader rdr = null;
string projectionlist = "obj, MI_Key, MI_Grid, MI_Style";
rdr = _miTable.ExecuteReader(projectionlist);
string name;
string typename;
int n = rdr.FieldCount;
if(rdr.Read())
{
n = rdr.FieldCount;//shouldn't change
for(int i =0; i <n; i++)
{
name = rdr.GetName(i);
typename = rdr.GetDataTypeName(i);
if(typename == "MapInfo.Styles.Style")
{
_mStyle = rdr.GetStyle(i) as GridStyle;
}
else if(typename == "MapInfo.Geometry.FeatureGeometry")
{
_mObject = rdr.GetFeatureGeometry(i);
}
else if(typename == "MapInfo.Data.Key")
{
_mKey = rdr.GetKey(i);
}
else if (typename == "MapInfo.Raster.GridInfo")
{
_mGridInfo = rdr.GetGridInfo(i);
}
}
}
rdr.Close();
rdr.Dispose();
rdr = null;
}
