bingil 组件LayerSelectControl lanix

目标：定制一个组件，选择不用的Layer，从地图AxMapControl上选择对象，并用DataGridView显示显性。

关键代码：
LayerSelectControl.Designer.cs
 1 namespace LayerSelect
 2 {
 3     partial class LayerSelectControl
 4     {
 5         /// <summary> 
 6         /// Required designer variable.
 7         /// </summary>
 8         private System.ComponentModel.IContainer components = null;
 9 
10         /// <summary> 
11         /// Clean up any resources being used.
12         /// </summary>
13         /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
14         protected override void Dispose(bool disposing)
15         {
16             if (disposing && (components != null))
17             {
18                 components.Dispose();
19             }
20             base.Dispose(disposing);
21         }
22 
23         #region Component Designer generated code
24 
25         /// <summary> 
26         /// Required method for Designer support - do not modify 
27         /// the contents of this method with the code editor.
28         /// </summary>
29         private void InitializeComponent()
30         {
31             this.comboBox1 = new System.Windows.Forms.ComboBox();
32             this.textBox1 = new System.Windows.Forms.TextBox();
33             this.dataGridView1 = new System.Windows.Forms.DataGridView();
34             ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).BeginInit();
35             this.SuspendLayout();
36             // 
37             // comboBox1
38             // 
39             this.comboBox1.Dock = System.Windows.Forms.DockStyle.Top;
40             this.comboBox1.FormattingEnabled = true;
41             this.comboBox1.Location = new System.Drawing.Point(0, 0);
42             this.comboBox1.Name = "comboBox1";
43             this.comboBox1.Size = new System.Drawing.Size(228, 20);
44             this.comboBox1.TabIndex = 0;
45             this.comboBox1.SelectedIndexChanged += new System.EventHandler(this.comboBox1_SelectedIndexChanged);
46             // 
47             // textBox1
48             // 
49             this.textBox1.Dock = System.Windows.Forms.DockStyle.Bottom;
50             this.textBox1.Location = new System.Drawing.Point(0, 200);
51             this.textBox1.Name = "textBox1";
52             this.textBox1.Size = new System.Drawing.Size(228, 21);
53             this.textBox1.TabIndex = 1;
54             // 
55             // dataGridView1
56             // 
57             this.dataGridView1.ColumnHeadersHeightSizeMode = System.Windows.Forms.DataGridViewColumnHeadersHeightSizeMode.AutoSize;
58             this.dataGridView1.Dock = System.Windows.Forms.DockStyle.Fill;
59             this.dataGridView1.Location = new System.Drawing.Point(0, 20);
60             this.dataGridView1.Name = "dataGridView1";
61             this.dataGridView1.RowTemplate.Height = 23;
62             this.dataGridView1.Size = new System.Drawing.Size(228, 180);
63             this.dataGridView1.TabIndex = 2;
64             // 
65             // LayerSelectControl
66             // 
67             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
68             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
69             this.Controls.Add(this.dataGridView1);
70             this.Controls.Add(this.textBox1);
71             this.Controls.Add(this.comboBox1);
72             this.Name = "LayerSelectControl";
73             this.Size = new System.Drawing.Size(228, 221);
74             ((System.ComponentModel.ISupportInitialize)(this.dataGridView1)).EndInit();
75             this.ResumeLayout(false);
76             this.PerformLayout();
77 
78         }
79 
80         #endregion
81 
82         private System.Windows.Forms.ComboBox comboBox1;
83         private System.Windows.Forms.TextBox textBox1;
84         private System.Windows.Forms.DataGridView dataGridView1;
85     }
86 }

LayerSelectControl.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Windows.Forms;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.SystemUI;


namespace LayerSelect
{
    public partial class LayerSelectControl : UserControl
    {
        AxMapControl _axMapControl;
        IMap pMap;
        public LayerSelectControl()
        {
            InitializeComponent();
            
        }

        public void setBuddy(AxMapControl axMapControl)
        {
            _axMapControl = axMapControl;
            pMap = _axMapControl.Map;
            _axMapControl_OnMapReplaced(null, null);
            _axMapControl.OnMapReplaced += new IMapControlEvents2_Ax_OnMapReplacedEventHandler(_axMapControl_OnMapReplaced);
            _axMapControl.OnMouseDown += new IMapControlEvents2_Ax_OnMouseDownEventHandler(_axMapControl_OnMouseDown);
            _axMapControl.OnSelectionChanged += new EventHandler(_axMapControl_OnSelectionChanged);

        }

        #region Event of axMapControl

        void _axMapControl_OnSelectionChanged(object sender, EventArgs e)
        {
            this.textBox1.Text = this.comboBox1.Text + " --- " + pMap.SelectionCount.ToString() +
                "features seleted---";
            ILayer pLayer = pMap.Layer[comboBox1.SelectedIndex];
            if(pLayer != null)
            {
                this.dataGridView1.DataSource = createDataTableWithSeletedData(pLayer, 100);
            }
            
        }

        void _axMapControl_OnMouseDown(object sender, IMapControlEvents2_OnMouseDownEvent e)
        {
            if (e.button == 1)
            {
                pMap.ClearSelection();
                IPoint pPoint = new PointClass();
                pPoint.PutCoords(e.mapX, e.mapY);
                IEnvelope pEnvelope = _axMapControl.TrackRectangle();
                pMap.SelectByShape(pEnvelope, null, false);
                _axMapControl.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeoSelection, null, pEnvelope);

            }
        }

        void _axMapControl_OnMapReplaced(object sender, IMapControlEvents2_OnMapReplacedEvent e)
        {
            this.comboBox1.Items.Clear();
            pMap = _axMapControl.Map;
            for (int i = 0; i < pMap.LayerCount; i++)
            {
                this.comboBox1.Items.Add(pMap.Layer[i].Name);
            }
        }
        
        #endregion

        #region Event of comboBox1

        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            IFeatureLayer pFeatureLayer;
            for (int i = 0; i < pMap.LayerCount; i++)
            {
                pFeatureLayer = pMap.Layer[i] as IFeatureLayer;
                if (i == comboBox1.SelectedIndex)
                {
                    pFeatureLayer.Selectable = true;
                    DataTable pDataTable = createDataTableWithData(pMap.Layer[i],100);
                    dataGridView1.DataSource = pDataTable;
                }
                else
                {
                    pFeatureLayer.Selectable = false;
                }
            }
        }

        #endregion

        #region Function of Create DataTabel
        DataTable createDataTableWithField(ILayer pLayer)
        {
            DataTable pDataTable = new DataTable();
            ITable pTable = pLayer as ITable;
            IField pField = null;
            DataColumn pDataColumn;
            for (int i = 0; i < pTable.Fields.FieldCount; i++)
            {
                pField = pTable.Fields.get_Field(i);
                pDataColumn = new DataColumn(pField.Name);
                if (pField.Name == pTable.OIDFieldName)
                {
                    pDataColumn.Unique = true;
                }
                pDataColumn.AllowDBNull = pField.IsNullable;
                pDataColumn.Caption = pField.AliasName;
                pDataColumn.DataType = System.Type.GetType(ParseFieldType(pField.Type));
                pDataColumn.DefaultValue = pField.DefaultValue;
                if (pField.VarType == 8)
                {
                    pDataColumn.MaxLength = pField.Length;
                }
                pDataTable.Columns.Add(pDataColumn);
                pField = null;
                pDataColumn = null;
            }
            return pDataTable;

        }

        DataTable createDataTableWithData(ILayer pLayer,int maxNumber)
        {
            DataTable pDataTable = createDataTableWithField(pLayer);
            string shapeType = getShape(pLayer);
            DataRow pDataRow = null;
            ITable pTable = pLayer as ITable;
            ICursor pCursor = pTable.Search(null, false);
            IRow pRow = pCursor.NextRow();
            
            int n = 0;//the maxinum number of data show on the datagrids
            while (pRow != null)
            {
                pDataRow = pDataTable.NewRow();
                for (int i = 0; i < pRow.Fields.FieldCount; i++)
                {
                    if (pRow.Fields.get_Field(i).Type == esriFieldType.esriFieldTypeGeometry)
                    {
                        pDataRow[i] = shapeType;
                    }
                    else if (pRow.Fields.get_Field(i).Type == esriFieldType.esriFieldTypeBlob)
                    {
                        pDataRow[i] = "Element";
                    }
                    else
                    {
                        pDataRow[i] = pRow.get_Value(i);
                    }
                }
                pDataTable.Rows.Add(pDataRow);
                pDataRow = null;
                n++;
                if (n == maxNumber)
                {
                    pRow = null;
                }
                else
                {
                    pRow = pCursor.NextRow();
                }
            }
            return pDataTable;
        }


        private DataTable createDataTableWithSeletedData(ILayer pLayer, int maxNumber)
        {

            DataTable pDataTable = createDataTableWithField(pLayer); 
            string shapeType = getShape(pLayer);
            ILayer rLayer = getSelectedLayer(pMap, this.comboBox1.SelectedIndex);
            return createDataTableWithData(rLayer, maxNumber);

        }

        #endregion

        private static string ParseFieldType(esriFieldType fieldType)
        {
            switch (fieldType)
            {
                case esriFieldType.esriFieldTypeBlob:
                    return "System.String";
                case esriFieldType.esriFieldTypeDate:
                    return "System.DateTime";
                case esriFieldType.esriFieldTypeDouble:
                    return "System.Double";
                case esriFieldType.esriFieldTypeGeometry:
                    return "System.String";
                case esriFieldType.esriFieldTypeGlobalID:
                    return "System.String";
                case esriFieldType.esriFieldTypeGUID:
                case esriFieldType.esriFieldTypeInteger:
                    return "System.Int32";
                case esriFieldType.esriFieldTypeOID:
                    return "System.String";
                case esriFieldType.esriFieldTypeRaster:
                    return "System.String";
                case esriFieldType.esriFieldTypeSingle:
                    return "System.Single";
                case esriFieldType.esriFieldTypeSmallInteger:
                    return "System.Int32";
                case esriFieldType.esriFieldTypeString:
                    return "System.String";
                case esriFieldType.esriFieldTypeXML:
                    return "System.String";
                default :
                    return "System.String";
            }
        }

        private string getShape(ILayer pLayer)
        {
            IFeatureLayer pFeatLyr = pLayer as IFeatureLayer;
            switch (pFeatLyr.FeatureClass.ShapeType)
            {
                case esriGeometryType.esriGeometryPoint:
                    return "Point";
                case esriGeometryType.esriGeometryPolyline:
                    return "Polyline";
                case esriGeometryType.esriGeometryPolygon:
                    return "Polygon";
                default:
                    return "";
            }
        }

        private ILayer getSelectedLayer(IMap pMap,int index)
        {
            IFeatureLayer pnewfeat;
            IFeatureLayer pFeatLyr;
            pFeatLyr = pMap.get_Layer(index) as IFeatureLayer;
            IFeatureSelection pFeatSel = pMap.FeatureSelection as IFeatureSelection;
            IFeatureLayerDefinition pFeatLyrDef = pFeatLyr as IFeatureLayerDefinition;
            pnewfeat = pFeatLyrDef.CreateSelectionLayer("new" + pFeatLyr.Name, true, "", "");
            ILayer rLayer = pnewfeat as ILayer;
            return rLayer;
        }
    }
}

用法：使用public void setBuddy(AxMapControl axMapControl)绑定对象即可。

效果图片：

posted @ 2012-06-01 21:11  lanix  阅读(626)  评论(0)  编辑  收藏  举报