private void fillRtxt()
{
rTextPrj.Clear();
if (pSR is IProjectedCoordinateSystem)
{
IProjectedCoordinateSystem5 iPCS = pSR as IProjectedCoordinateSystem5;
rTextPrj.AppendText("投影：" + iPCS.Projection.Name + "\r\n");
rTextPrj.AppendText("东偏：" + iPCS.FalseEasting.ToString("f6") + "\r\n");
rTextPrj.AppendText("北偏：" + iPCS.FalseNorthing.ToString("f6") + "\r\n");
rTextPrj.AppendText("中央经线：" + iPCS.get_CentralMeridian(true).ToString("f6") + "\r\n");
try
{
rTextPrj.AppendText("比例因子：" + iPCS.ScaleFactor.ToString("f6") + "\r\n");
rTextPrj.AppendText("纬线原点：" + iPCS.LatitudeOfOrigin.ToString("f6") + "\r\n");
}
catch { }
rTextPrj.AppendText("单位：" + iPCS.CoordinateUnit.Name.ToString() + "\r\n\r\n");
IGeographicCoordinateSystem iGCS = iPCS.GeographicCoordinateSystem;
rTextPrj.AppendText("大地坐标系：" + iGCS.Name.ToString() + "\r\n");
rTextPrj.AppendText("角度单位：" + iGCS.CoordinateUnit.Name.ToString() + "\r\n");
rTextPrj.AppendText("本初子午线：" + iGCS.PrimeMeridian.Name.ToString() + "\r\n");
rTextPrj.AppendText("水准面：" + iGCS.Datum.Name.ToString() + "\r\n");
rTextPrj.AppendText(" 椭球：" + iGCS.Datum.Spheroid.Name.ToString() + "\r\n");
rTextPrj.AppendText(" 长轴：" + iGCS.Datum.Spheroid.SemiMajorAxis.ToString("F18") + "\r\n");
rTextPrj.AppendText(" 短轴：" + iGCS.Datum.Spheroid.SemiMinorAxis.ToString("F18") + "\r\n");
rTextPrj.AppendText(" 扁率倒数：" + (1 / iGCS.Datum.Spheroid.Flattening).ToString("F18") + "\r\n");
}
else if (pSR is IGeographicCoordinateSystem)
{
IGeographicCoordinateSystem iGCS = pSR as IGeographicCoordinateSystem;
rTextPrj.AppendText("大地坐标系：" + iGCS.Name.ToString() + "\r\n");
rTextPrj.AppendText("角度单位：" + iGCS.CoordinateUnit.Name.ToString() + "\r\n");
rTextPrj.AppendText("本初子午线：" + iGCS.PrimeMeridian.Name.ToString() + "\r\n");
rTextPrj.AppendText("水准面：" + iGCS.Datum.Name.ToString() + "\r\n");
rTextPrj.AppendText(" 椭球：" + iGCS.Datum.Spheroid.Name.ToString() + "\r\n");
rTextPrj.AppendText(" 长轴：" + iGCS.Datum.Spheroid.SemiMajorAxis.ToString("F18") + "\r\n");
rTextPrj.AppendText(" 短轴：" + iGCS.Datum.Spheroid.SemiMinorAxis.ToString("F18") + "\r\n");
rTextPrj.AppendText(" 扁率倒数：" + (1 / iGCS.Datum.Spheroid.Flattening).ToString("F18") + "\r\n");
}
else
{
rTextPrj.AppendText("未知投影\r\n");
}
}
private void loadSourceTab()
{
//Extent
IEnvelope pEnvelope = ((IGeoDataset)((IFeatureLayer)pLayer).FeatureClass).Extent;
this.txtExtentTop.Text = pEnvelope.YMax.ToString();
this.txtExtentButtom.Text = pEnvelope.YMin.ToString();
this.txtExtentLeft.Text = pEnvelope.XMin.ToString();
this.txtExtentRight.Text = pEnvelope.XMax.ToString();
//DataSource
StringBuilder strDataSource = new StringBuilder();
strDataSource.Append("DataType:");
IFeatureLayer pFeatureLayer = (IFeatureLayer)this.pLayer;
strDataSource.Append(pFeatureLayer.DataSourceType);
IDataLayer2 pDataLayer2 = (IDataLayer2)this.pLayer;
strDataSource.Append(":\n");
strDataSource.Append(pDataLayer2.DataSourceName.NameString);
IGeoDataset pGeoDataset = (IGeoDataset)this.pLayer;
ISpatialReference pSpatialReference = pGeoDataset.SpatialReference;
IProjectedCoordinateSystem5 pProCoorSys = pSpatialReference as IProjectedCoordinateSystem5;
if (pProCoorSys != null)
{
strDataSource.Append("\nProjected Corrdinate System:");
strDataSource.Append(pProCoorSys.Name);
strDataSource.Append("\nProjection:");
strDataSource.Append(pProCoorSys.Projection.Name);
strDataSource.Append("\nFalse_Easting:");
strDataSource.Append(pProCoorSys.FalseEasting);
//strDataSource.AppendFormat("F8", pProCoorSys.FalseEasting);
strDataSource.Append("\nFalse_Northing:");
strDataSource.Append(pProCoorSys.FalseNorthing);
strDataSource.Append("\nCentral_Meridian:");
strDataSource.Append(pProCoorSys.get_CentralMeridian(true));
strDataSource.Append("\nStandard)Parallel_1:");
strDataSource.Append(pProCoorSys.StandardParallel1);
strDataSource.Append("\nStandard_Parallel_2:");
strDataSource.Append(pProCoorSys.StandardParallel2);
strDataSource.Append("\nLatitude_Of_Origin:");
strDataSource.Append(pProCoorSys.LatitudeOfOrigin);
strDataSource.Append("\nLinear_Unit:");
strDataSource.Append(pProCoorSys.CoordinateUnit.Name);
strDataSource.Append("\n");
}
//IGeographicCoordinateSystem pGeoCoorSys = pProCoorSys.GeographicCoordinateSystem;
IGeographicCoordinateSystem pGeoCoorSys = pSpatialReference as IGeographicCoordinateSystem;
if (pGeoCoorSys != null)
{
strDataSource.Append("\nGeographic Coordinate System:");
strDataSource.Append(pGeoCoorSys.Name);
strDataSource.Append("\nDatum:");
strDataSource.Append(pGeoCoorSys.Datum.Name);
strDataSource.Append("\nPrime_Meridian:");
strDataSource.Append(pGeoCoorSys.PrimeMeridian.Longitude);
strDataSource.Append("\nAangular_Unit:");
strDataSource.Append(pGeoCoorSys.CoordinateUnit.Name);
}
this.txtDataSource.Text = strDataSource.ToString();
}