GenerateLabelsManually.cs

This example demonstrates how to Adds labels to the layer without using automated procedures like Labels.Generate. Here is a screenshot with the results of the code.

using System;
using System.Windows.Forms;
using AxMapWinGIS;
using MapWinGIS;
using System.IO;

public partial class MapExamples
{
    // <summary>
    // Adds labels to the layer without using automated procedures like Labels.Generate.
    // </summary>
    public void GenerateLabelsManually(AxMap axMap1, string dataPath)
    {
        string filename = dataPath + "buildings.shp";
        if (!File.Exists(filename))
        {
            MessageBox.Show("Failed to open file: " + filename);
            return;
        }

        Shapefile sf = new Shapefile();
        if (!sf.Open(filename, null))
        {
            MessageBox.Show("Failed to open shapefile: " + sf.get_ErrorMsg(sf.LastErrorCode));
        }
        else
        {
            int fieldIndex = 0;
            for (int i = 0; i < sf.NumShapes; i++)
            {
                Shape shp = sf.get_Shape(i);
                string text = sf.get_CellValue(fieldIndex, i).ToString();
                Point pnt = shp.Centroid;
                sf.Labels.AddLabel(text, pnt.x, pnt.y, 0.0, -1);

                // the old method should be used like this
                //axMap1.AddLabel(layerHandle, text, 0, pnt.x, pnt.y, tkHJustification.hjCenter);
            }
            sf.Labels.Synchronized = true;

            axMap1.AddLayer(sf, true);
        }
    }
}