opera.cs

ESRI scheme 文件投影修改

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.IO;

using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.DataSourcesGDB;
namespace ChangeXMLPrj
{
    public class opera
    {

        /// <summary>
        /// 依据prj文件，获取有效投影参数
        /// </summary>
        /// <returns></returns>
        public ISpatialReference getSpatialRefByPrjFile()
        {
            //OpenFileDialog ofg = new OpenFileDialog();
            //ofg.Title = "投影坐标系文件";
            //ofg.Filter = "投影文件(*.prj)|*.prj";
            //ofg.Multiselect = false;
            //ofg.RestoreDirectory = false;
            //string path = Environment.GetEnvironmentVariable("ARCGISHOME");
            ////path = "";
            //if (path != "")
            //{
            //    path += @"Coordinate Systems\Projected Coordinate Systems";
            //}
            //else
            //{
            //    path = Application.StartupPath + "\\..\\Data";
            //}
            //ofg.InitialDirectory = path;
            //DialogResult dr = ofg.ShowDialog();
            //string name = ofg.FileName;
            //if (dr == DialogResult.OK && name != "")
            //{
                return alterspatialrefByPrj("WGS 1984 UTM Zone 24N.prj");
            //}
            //else
            //{
            //    return null;
            //}
            //ofg = null;
        }


        public static string getPrjText()
        {
            StreamReader sr = new StreamReader("WGS 1984 UTM Zone 24N.prj");
            string str= sr.ReadToEnd();
            sr.Close();
            str = str.Replace("\"", "&quot;");
            return str ;
        }


        /// <summary>
        /// 修改临时模板PGDB中的投影
        /// </summary>
        /// <param name="prjfilename">prj文件名</param>
        /// <returns></returns>
        private ISpatialReference alterspatialrefByPrj(string prjfilename)
        {
            try
            {
                ISpatialReferenceFactory2 psrfac = new SpatialReferenceEnvironmentClass();
                ISpatialReference psrtmp = psrfac.CreateESRISpatialReferenceFromPRJFile(prjfilename);
                IWorkspaceFactory pwkf = new AccessWorkspaceFactoryClass();
                IWorkspace pwks = pwkf.OpenFromFile("Templete.mdb", 0);
                IFeatureClass pfc = (pwks as IFeatureWorkspace).OpenFeatureClass("SRTemp");
                IGeoDatasetSchemaEdit pgse = pfc as IGeoDatasetSchemaEdit;
                pgse.AlterSpatialReference(psrtmp);

                ISpatialReference psp = (pfc as IGeoDataset).SpatialReference;
                pwks = null;
                pwks = null;
                return psp;
            }
            catch (Exception ex)
            {
                return null;
            }
        }
    }
}