Mapinfo的一些用法

 

1、打开：

MapInfo.Data.Table table = MapInfo.Engine.Session.Current.Catalog.OpenTable(open.FileName);
this.mapControl1.Map.Load(new MapTableLoader(table));

2、
选择点
mapControl1.Map.GetDisplayCoordSys();

MapInfo.Geometry.DPoint dp = new MapInfo.Geometry.DPoint();
MapInfo.Geometry.DPoint dpout = new MapInfo.Geometry.DPoint();
dp.x = p.X;
dp.y = p.Y;
使用显示坐标转化到地图上的坐标
mapControl1.Map.DisplayTransform.FromDisplay(p, out dpout);

MapInfo.Data.MIConnection connection = new MapInfo.Data.MIConnection();
connection.Open();

This is the point of origin...
MapInfo.Geometry.DPoint dpt1 = new MapInfo.Geometry.DPoint(dpout.x, dpout.y);

'tablename' is the string alias of the table to perform the search on...'DoesTableExist' is a
function that can be written to check to be sure the table was open. A 'try...catch' could also be
used here.
string tablename = comboBoxView.Text; ;

get the table from the current catalog and assign to tab1
MapInfo.Data.Table tab1 = connection.Catalog.GetTable(tablename);
create a feature layer from tab1
MapInfo.Mapping.FeatureLayer f1 = new MapInfo.Mapping.FeatureLayer(tab1);
create a Distance object from the search radius and unit type -
MapInfo.Geometry.Distance dist4 = new MapInfo.Geometry.Distance(200, MapInfo.Geometry.DistanceUnit.Meter);
Use the SearchInfoFactory class to return a search info based on search type. In this case -
SearchWithinDistance
Distance dist = new Distance();
dist.Value = 50;
dist.Unit = MapInfo.Geometry.DistanceUnit.Meter;
MapInfo.Data.SearchInfo si = MapInfo.Data.SearchInfoFactory.SearchWithinDistance(dpt1, f1.CoordSys, dist, MapInfo.Data.ContainsType.Centroid);
The QueryDefinition (what to return), in this case - all columns '*'
si.QueryDefinition.Columns = new string[] { "*" };
Perform the search on the table, return an IResultSetFeatureCollection object...
MapInfo.Data.IResultSetFeatureCollection irfc = MapInfo.Engine.Session.Current.Catalog.Search(tablename, si);

int i = 0;
This IRFC can now be stepped through with a foreach loop...

ArrayList arrFea = new ArrayList();
foreach (MapInfo.Data.Feature f in irfc)
{
And each cell in each returned feature can be accessed with a simple for loop...
arrFea.Add(f);
/*for (int j = 0; j < irfc.Columns.Count; j++)
{
print the contents of cell j in feature f to the console screen...

str += f[j].ToString();
}
*/
i++;
}

3、添加数据
MapInfo.Data.Table table = MapInfo.Engine.Session.Current.Catalog.GetTable(strTableName);
CoordSys coordSys = map.GetDisplayCoordSys();
if (table == null)
{
return;
}
创建点及其样式
FeatureGeometry geometry = new MapInfo.Geometry.Point(coordSys, x, y);
= mapToolBarButtonLayerControl.Style;
SimpleVectorPointStyle vStyle = poiStyle;

SimpleVectorPointStyle vStyle = poistyle;

mapControl1.sty
创建的点的样式、颜色和大小都在上条语句中修改

CompositeStyle cStyle = new MapInfo.Styles.CompositeStyle(vStyle);

MIConnection connection = new MIConnection();
MICommand cmd = connection.CreateCommand();

ArrayList arrCol = new ArrayList();
ArrayList arrValue = new ArrayList();
ArrayList arrProperty = new ArrayList();

cmd.Parameters.Add("geometry", MIDbType.FeatureGeometry);
cmd.Parameters.Add("style", MIDbType.Style);
foreach (string str in arrMapCol)
{

if (str.ToLower().Equals("mi_geometry"))
{
/*
arrCol.Add(str);
arrValue.Add("geometry");
arrProperty.Add("geometry");
*/
cmd.Parameters.Add("geometry", MIDbType.FeatureGeometry);

continue;
}
if (str.ToLower().Equals("mi_style"))
{
continue;
/*
arrCol.Add(str);
arrValue.Add("style");
arrProperty.Add("style");
*/
cmd.Parameters.Add("style", MIDbType.Style);
}
if (dicData.ContainsKey(str))
{
arrCol.Add(str);
arrValue.Add(str);

cmd.Parameters.Add(str, dicData[str]);
}

}
cmd.CommandText = "Insert Into " + strTableName + "(";

string s1 = "MI_Geometry,MI_Style,";
string s2 = "geometry,style,";
int i = 0;
for (; i < arrCol.Count - 1; i++)
{
s1 += (string)arrCol[i] + ",";
s2 += (string)arrValue[i] + ",";
}
cmd.CommandText += s1 + arrCol[i] + ") values (" + s2 + arrValue[i] + ")";

connection.Open();

cmd.Parameters[0].Value = geometry;
cmd.Parameters[1].Value = cStyle;

int nchanged = cmd.ExecuteNonQuery();

cmd.Dispose();
创建图层并将其插入到当前地图的最上层

/*
FeatureLayer fl = new FeatureLayer(table);
map.Layers.Insert(0, fl);
map.Center = new MapInfo.Geometry.DPoint(x, y);
*/
MapUtility.HighLightPoint(map, "minfotempmap", x, y);