private void RadioButton_CheckedChanged(object sender, EventArgs e)
{
OleDbFeatureLayer oleDbFeatureLayer = (OleDbFeatureLayer)winformsMap1.FindFeatureLayer("OleDbLayer");
RadioButton radioButton = sender as RadioButton;
if (radioButton != null)
{
if (radioButton.Checked)
{
winformsMap1.Overlays["OleDbOverlay"].Lock.EnterWriteLock();
oleDbFeatureLayer.Open();
oleDbFeatureLayer.FeatureSource.GetAllFeatures(new string[] { "TG_ID", "TG_Wkb" });
oleDbFeatureLayer.Close();
winformsMap1.Overlays["OleDbOverlay"].Lock.ExitWriteLock();
winformsMap1.Refresh();
}
}
}
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
OleDbFeatureLayer oleDbFeatureLayer = (OleDbFeatureLayer)winformsMap1.FindFeatureLayer("OleDbLayer");
oleDbFeatureLayer.Open();
if (comboBox1.SelectedItem.ToString() == "GetCount")
{
oleDbFeatureLayer.FeatureSource.GetCount();
}
else if (comboBox1.SelectedItem.ToString() == "GetAllFeatures")
{
oleDbFeatureLayer.FeatureSource.GetAllFeatures(new string[] { "TG_ID", "TG_Wkb" });
}
else if (comboBox1.SelectedItem.ToString() == "GetFirstGeometryType")
{
((OleDbFeatureSource)oleDbFeatureLayer.FeatureSource).GetFirstGeometryType();
}
oleDbFeatureLayer.Close();
}