private void transform_Click(object sender, EventArgs e)
{
if (vlay == null)
{
return;
}
if (vlay.DataSource == null)
{
MessageBox.Show("请先载入shp文件");
}
else
{
if (!vlay.DataSource.IsOpen)
{
vlay.DataSource.Open();
}
SharpMap.Data.Providers.ShapeFile shapefile = (SharpMap.Data.Providers.ShapeFile)vlay.DataSource;
int geoCount = shapefile.GetFeatureCount();
string writefile = null;
saveFileDialog1.Filter = "(*.txt*)|*.txt";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
writefile = saveFileDialog1.FileName;
}
if (writefile == null)
{
MessageBox.Show("输出文件不能为空，请正确选择");
return;
}
FileStream fs = new FileStream(writefile, FileMode.Append);
StreamWriter sw = new StreamWriter(fs, Encoding.Default);
for (int i = 0; i < geoCount; i++)
{
GeoAPI.Geometries.IGeometry geo = shapefile.GetGeometryByID(Convert.ToUInt32(i));
sw.Write(geo + "\n");
}
// Console.WriteLine(geo);
vlay.DataSource.Close();
sw.Close();
fs.Close();
MessageBox.Show("文件已转换完毕！");
}
}
public void FixtureSetup()
{
var connStrBuilder = new NpgsqlConnectionStringBuilder(Properties.Settings.Default.PostGis);
if (string.IsNullOrEmpty(connStrBuilder.Host) || string.IsNullOrEmpty(connStrBuilder.Database))
{
Assert.Ignore("Requires PostgreSQL connectionstring");
}
GeoAPI.GeometryServiceProvider.Instance = new NetTopologySuite.NtsGeometryServices();
try
{
// Set up sample table
using (var conn = new NpgsqlConnection(Properties.Settings.Default.PostGis))
{
conn.Open();
// Load data
using (var shapeFile = new SharpMap.Data.Providers.ShapeFile(GetTestFile()))
{
shapeFile.SRID = 4326;
shapeFile.Open();
using (var cmd = conn.CreateCommand())
{
cmd.CommandText = "DROP TABLE IF EXISTS roads_ugl";
cmd.ExecuteNonQuery();
// The ID column cannot simply be int, because that would cause GetObjectIDsInView to fail. The provider internally works with uint
cmd.CommandText =
"CREATE TABLE roads_ugl(id integer primary key, name character varying(100), geog geography);";
cmd.ExecuteNonQuery();
}
IEnumerable<uint> indexes = shapeFile.GetObjectIDsInView(shapeFile.GetExtents());
_insertedIds = new List<uint>(indexes.Take(100));
using (NpgsqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText =
"INSERT INTO roads_ugl(id, name, geog) VALUES (@PId, @PName, ST_GeogFromWKB(@PGeom));";
var @params = cmd.Parameters;
@params.AddRange(
new[]
{
new NpgsqlParameter("PId", NpgsqlDbType.Integer),
new NpgsqlParameter("PName", NpgsqlDbType.Varchar, 100),
new NpgsqlParameter("PGeom", NpgsqlDbType.Bytea)
});
var writer = new PostGisWriter();
foreach (var idx in _insertedIds)
{
var feature = shapeFile.GetFeature(idx);
@params["PId"].NpgsqlValue = (int)idx;
@params["PName"].NpgsqlValue = feature["NAME"];
@params["PGeom"].NpgsqlValue = writer.Write(feature.Geometry);
cmd.ExecuteNonQuery();
}
}
// Verify
foreach (var pgp in GetTestProvider())
{
foreach (var idx in _insertedIds)
{
var g1 = pgp.GetGeometryByID(idx);
var g2 = shapeFile.GetGeometryByID(idx);
Assert.AreEqual(g1, g2);
}
}
}
}
}
catch (Exception ee)
{
Assert.Ignore("Failed to connect to PostgreSQL/PostGIS Server");
}
}
public void FixtureSetup()
{
var connStrBuilder = new NpgsqlConnectionStringBuilder(Properties.Settings.Default.PostGis);
if (string.IsNullOrEmpty(connStrBuilder.Host) || string.IsNullOrEmpty(connStrBuilder.Database))
{
Assert.Ignore("Requires PostgreSQL connectionstring");
}
GeoAPI.GeometryServiceProvider.Instance = new NetTopologySuite.NtsGeometryServices();
try
{
// Set up sample table
using (var conn = new NpgsqlConnection(Properties.Settings.Default.PostGis))
{
conn.Open();
// Load data
using (var shapeFile = new SharpMap.Data.Providers.ShapeFile(GetTestFile(), false, false, 4326))
{
shapeFile.Open();
using (var cmd = conn.CreateCommand())
{
cmd.CommandText = "DROP TABLE IF EXISTS roads_ugl";
cmd.ExecuteNonQuery();
// The ID column cannot simply be int, because that would cause GetObjectIDsInView to fail. The provider internally works with uint
cmd.CommandText =
"CREATE TABLE roads_ugl(id integer primary key, name character varying(100), geog geography);";
cmd.ExecuteNonQuery();
}
IEnumerable <uint> indexes = shapeFile.GetObjectIDsInView(shapeFile.GetExtents());
_insertedIds = new List <uint>(indexes.Take(100));
using (NpgsqlCommand cmd = conn.CreateCommand())
{
cmd.CommandText =
"INSERT INTO roads_ugl(id, name, geog) VALUES (@PId, @PName, ST_GeogFromWKB(@PGeom));";
var @params = cmd.Parameters;
@params.AddRange(
new[]
{
new NpgsqlParameter("PId", NpgsqlDbType.Integer),
new NpgsqlParameter("PName", NpgsqlDbType.Varchar, 100),
new NpgsqlParameter("PGeom", NpgsqlDbType.Bytea)
});
var writer = new PostGisWriter();
foreach (var idx in _insertedIds)
{
var feature = shapeFile.GetFeature(idx);
@params["PId"].NpgsqlValue = (int)idx;
@params["PName"].NpgsqlValue = feature["NAME"];
@params["PGeom"].NpgsqlValue = writer.Write(feature.Geometry);
cmd.ExecuteNonQuery();
}
}
// Verify
foreach (var pgp in GetTestProvider())
{
foreach (var idx in _insertedIds)
{
var g1 = pgp.GetGeometryByID(idx);
var g2 = shapeFile.GetGeometryByID(idx);
Assert.AreEqual(g1, g2);
}
}
}
}
}
catch (Exception ee)
{
Assert.Ignore("Failed to connect to PostgreSQL/PostGIS Server");
}
}