selectionlayereditorform.cs

C#开发的ArcGIS Server9.2地图选择控件

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using ESRI.ArcGIS.ADF.Web.DataSources.Graphics;

namespace SelectToolTask
{
    public partial class SelectionLayerEditorForm : Form
    {
        public SelectionLayerEditorForm(string[] selectableLayers, 
            string[] allLayerNames, string[] invalidServices)
        {
            InitializeComponent();
            if (allLayerNames != null)
            {
                clbAvailableLayers.Items.AddRange(allLayerNames);

                if (selectableLayers != null && selectableLayers.Length > 0)
                    rbnSpecifySelectionLayers.Checked = true;
            }
            else
            {
                // Can't get list of all layers -- notify user and disable specifying layers
                clbAvailableLayers.Items.Add("(Error getting layers)");
                rbnSpecifySelectionLayers.Enabled = false;
            }

            if (invalidServices != null && invalidServices.Length > 0)
            {
                lblError.Visible = true;
                lblErrorServices.Visible = true;
                lblErrorServices.Text = String.Join("; ", invalidServices);
            }

            SelectableLayers = selectableLayers;
        }

        public string[] SelectableLayers
        {
            get
            {
                string[] selLayers = new string[0];
                
                // If specify layers, get the list. Otherwise an empty array will be returned.
                if (rbnSpecifySelectionLayers.Checked)
                {
                    int numSelected = clbAvailableLayers.CheckedItems.Count;
                    selLayers = new string[numSelected];
                    for (int i = 0; i < numSelected; i++)
                        selLayers[i] = (string)clbAvailableLayers.CheckedItems[i];
                }
                return selLayers;
            }
            set
            {
                if (value != null && value.Length > 0)
                {
                    // find each selectable layer in the layer list and turn checkbox on
                    foreach (string lyr in value)
                    {
                        for (int i = 0; i < clbAvailableLayers.Items.Count; i++)
                        {
                            if (lyr == (string)clbAvailableLayers.Items[i])
                            {
                                clbAvailableLayers.SetItemChecked(i, true);
                                break;
                            }
                        }
                    }
                }
            }
        }

        private void btnOk_Click(object sender, EventArgs e)
        {
            DialogResult = DialogResult.OK;
            Hide();
        }

        private void btnCancel_Click(object sender, EventArgs e)
        {
            DialogResult = DialogResult.Cancel;
            Hide();
        }

        // enable/disable selection list based on radio button
        private void rbnSpecifySelectionLayers_CheckedChanged(object sender, EventArgs e)
        {
            clbAvailableLayers.Enabled = rbnSpecifySelectionLayers.Checked;
        }
    }
}