public static void RenderLayer(MG_Layer layer, MG_MapView mapview, Graphics g)
{
if (layer.GetVisible())
{
for (int i = 0; i < layer.GetFeatureCount(); i++)
{
RenderFeature(layer.GetFeature(i),mapview, g);
}
}
}
private DataTable GetDataTable(MG_Layer layer)
{
// Create a new DataTable.
DataTable table = new DataTable(layer.GetLayerName());
// add oid
DataColumn oid_Column = new DataColumn("OID", Type.GetType("System.Int32"));
table.Columns.Add(oid_Column);
int i, j;
// Add the column
for (i = 0; i < layer.GetFieldSet().Count(); i++)
{
MG_Field field = layer.GetFieldSet().GetAt(i);
DataColumn column = new DataColumn(field.Name);
column.DataType = Type.GetType("System.String");
// Add the Column to the DataColumnCollection.
table.Columns.Add(column);
}
// Add the row
for (i = 0; i < layer.GetFeatureCount(); i++)
{
MG_Feature f = layer.GetFeature(i);
DataRow row = table.NewRow();
// add oid
row[0] = i+1;
for (j = 0; j < f.GetFieldCount(); j++)
{
object value = f.GetValue(j).Value;
if (value != null)
{
row[j + 1] = value.ToString();
}
}
// Add the row to the DataRowCollection.
table.Rows.Add(row);
}
return table;
}
public void ImportLayer(MG_Layer layer)
{
if (layer == null)
return;
// stop multi same data
if (this.IsTableExist(layer.GetLayerName()))
return;
this.CreateTable(layer.FieldSet, layer.Type);
string layerName = layer.FieldSet.GetName();
int fc = layer.GetFeatureCount();
// save ext
this.CreateTableExt();
this.InsertExtent(layerName,layer.Extent);
for (int i=0; i< fc;i++)
{
MG_Feature f = layer.GetFeature(i);
if (f.Geometry.Type == layer.Type)
{
this.Insert(layerName, f.ValueSet, f.Geometry);
}
}
}