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  • ArcGIS.Server.9.2.DotNet自带例子分析（三、二）

    目的：
    1.arcgis server9.2 ADF的AddGraphics-FeatureGraphicLayer。
    准备工作：
    1.（三、一）的工程，具体见前篇。。

    开始： 
    1.在页面上在新增一个Toolbar2，在ToolbarItems中添加一个Tool然后设置相应的属性，具体如下：

    1<ToolbarItems>
    2<esri:Tool ClientAction="Point" JavaScriptFile="" Name="AddFeature" ServerActionAssembly="AddGraphics" ServerActionClass="AddGraphics.FeatureGraphicTool"Text="Add Feature Point" />
    3</ToolbarItems>

    2.在GraphicPointTools.cs中新增加FeatureGraphicTool类来实现上面的Tool的功能，具体代码和说明如下：

      1public class FeatureGraphicTool : IMapServerToolAction
      2    {
      3        void IMapServerToolAction.ServerAction(ToolEventArgs toolEventArgs)
      4        {
      5            //获取map控件
      6            ESRI.ArcGIS.ADF.Web.UI.WebControls.Map adfMap = (ESRI.ArcGIS.ADF.Web.UI.WebControls.Map)toolEventArgs.Control;
      7            //转成点
      8            PointEventArgs pointEventArgs = (PointEventArgs)toolEventArgs;
      9            //屏幕点
     10            System.Drawing.Point screenPoint = pointEventArgs.ScreenPoint;
     11
     12            //屏幕坐标转成地理坐标
     13            ESRI.ArcGIS.ADF.Web.Geometry.Point adfPoint = ESRI.ArcGIS.ADF.Web.Geometry.Point.ToMapPoint(screenPoint.X, screenPoint.Y, adfMap.GetTransformationParams(ESRI.ArcGIS.ADF.Web.Geometry.TransformationDirection.ToMap));
     14
     15            ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapFunctionality adfGraphicsMapFunctionality = null;
     16            //MapFunctionality
     17            foreach (ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality mapFunctionality in adfMap.GetFunctionalities())
     18            {
     19                //当Resource为ADFGraphicsResource,ADFGraphicsResource为GraphicsLayer， 保存在内存中用显示临时图层
     20                if (mapFunctionality.Resource.Name == "ADFGraphicsResource")
     21                {
     22                    adfGraphicsMapFunctionality = (ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapFunctionality)mapFunctionality;
     23                    break;
     24                }
     25            }
     26
     27            //当为null的时候调用Utility.ProcessError方法弹出提示框
     28            if (adfGraphicsMapFunctionality == null)
     29            {
     30                //把Utility.ProcessError处理的CallbackResultCollection结果赋给Map控件
     31                adfMap.CallbackResults.CopyFrom(Utility.ProcessError("ADF graphics functionality not found"));
     32                return;
     33            }
     34
     35            //FeatureGraphicLayer类似feature layer，能建立属性信息，并能基于属性来符号化。图层只能存储同一图形类型。FeatureGraphicLayer可以支持查询。
     36            ESRI.ArcGIS.ADF.Web.Display.Graphics.FeatureGraphicsLayer featureGraphicsLayer = null;
     37            //从adfGraphicsMapFunctionality获取名为Feature Graphics的DataTable
     38            foreach (System.Data.DataTable dataTable in adfGraphicsMapFunctionality.GraphicsDataSet.Tables)
     39            {
     40                if (dataTable.TableName == "Feature Graphics")
     41                {
     42                    featureGraphicsLayer = (ESRI.ArcGIS.ADF.Web.Display.Graphics.FeatureGraphicsLayer)dataTable;
     43                    break;
     44                }
     45            }
     46
     47            //如果名为Feature Graphics的DataTable为null，就新建Feature Graphics DataTable
     48            if (featureGraphicsLayer == null)
     49            {
     50                //新建DataTable Feature Graphics
     51                featureGraphicsLayer = new ESRI.ArcGIS.ADF.Web.Display.Graphics.FeatureGraphicsLayer();
     52                featureGraphicsLayer.TableName = "Feature Graphics";
     53                adfGraphicsMapFunctionality.GraphicsDataSet.Tables.Add(featureGraphicsLayer);
     54
     55                //添加字段x
     56                System.Data.DataColumn xDataColumn =new System.Data.DataColumn("X", System.Type.GetType("System.Double"));
     57                featureGraphicsLayer.Columns.Add(xDataColumn);
     58                //添加字段y
     59                System.Data.DataColumn yDataColumn =new System.Data.DataColumn("Y", System.Type.GetType("System.Double"));
     60                featureGraphicsLayer.Columns.Add(yDataColumn);
     61                //添加字段CustomDataColumn
     62                System.Data.DataColumn customDataColumn =new System.Data.DataColumn("CustomDataColumn",System.Type.GetType("System.Int32"));
     63                featureGraphicsLayer.Columns.Add(customDataColumn);
     64
     65                //CustomDataColumn的值等于0时的显示样式
     66                ESRI.ArcGIS.ADF.Web.Display.Renderer.UniqueValue<int> zeroUniqueValue =new ESRI.ArcGIS.ADF.Web.Display.Renderer.UniqueValue<int>(0);
     67                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol zeroSymbol =new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol();
     68                zeroSymbol.Color = System.Drawing.Color.Red;
     69                zeroSymbol.Type = ESRI.ArcGIS.ADF.Web.Display.Symbol.MarkerSymbolType.Circle;
     70                zeroSymbol.Width = 12;
     71                zeroUniqueValue.Symbol = zeroSymbol;
     72                zeroUniqueValue.SymbolLabel = "0";
     73
     74                //CustomDataColumn的值等于1时的显示样式
     75                ESRI.ArcGIS.ADF.Web.Display.Renderer.UniqueValue<int> oneUniqueValue =new ESRI.ArcGIS.ADF.Web.Display.Renderer.UniqueValue<int>(1);
     76                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol oneSymbol =new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol();
     77                oneSymbol.Color = System.Drawing.Color.Blue;
     78                oneSymbol.Type = ESRI.ArcGIS.ADF.Web.Display.Symbol.MarkerSymbolType.Circle;
     79                oneSymbol.Width = 12;
     80                oneUniqueValue.Symbol = oneSymbol;
     81                oneUniqueValue.SymbolLabel = "1";
     82
     83        
     84                ESRI.ArcGIS.ADF.Web.Display.Renderer.ValueMapRenderer<int> valueMapRenderer =new ESRI.ArcGIS.ADF.Web.Display.Renderer.ValueMapRenderer<int>();
     85                valueMapRenderer.ValueColumnName = "CustomDataColumn";
     86
     87                //默认的显示样式
     88                valueMapRenderer.DefaultLabel = "Default Value";
     89                ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol defaultSymbol =new ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol();
     90                defaultSymbol.Color = System.Drawing.Color.Black;
     91                defaultSymbol.Type = ESRI.ArcGIS.ADF.Web.Display.Symbol.MarkerSymbolType.Cross;
     92                defaultSymbol.Width = 12;
     93                valueMapRenderer.DefaultSymbol = defaultSymbol;
     94
     95                ESRI.ArcGIS.ADF.Web.Display.Renderer.ValueCollection<int> valueCollection =valueMapRenderer.Values;
     96                valueCollection.Add(zeroUniqueValue);
     97                valueCollection.Add(oneUniqueValue);
     98
     99                //Renderer数据显示样式
    100                featureGraphicsLayer.Renderer = valueMapRenderer;
    101
    102                //刷新Toc1
    103                Toc adfToc = (Toc)Utility.FindControl("Toc1", adfMap.Page);
    104                adfToc.Refresh();
    105                //通知客户端更新显示
    106                adfMap.CallbackResults.CopyFrom(adfToc.CallbackResults);
    107
    108                // 执行客户端脚本
    109                CallbackResult enableCheckBoxCallbackResult =new CallbackResult(null, null, "javascript", string.Format("document.getElementById('{0}').disabled = false", "maptipsCheckBox"));
    110                //通知客户端更新显示
    111                adfMap.CallbackResults.Add(enableCheckBoxCallbackResult);
    112
    113            }
    114
    115            System.Data.DataRow newDataRow = featureGraphicsLayer.Add(adfPoint);
    116            //随机的给CustomDataColumn赋值，随机的出现上面定义的2个显示样式
    117            Random randomizer = new Random();
    118            int randomValue = randomizer.Next(0, 2);
    119            newDataRow["CustomDataColumn"] = randomValue;
    120
    121            //把x,y存到表里
    122            newDataRow["X"] = string.Format("{0:#.##}", adfPoint.X);
    123            newDataRow["Y"] = string.Format("{0:#.##}", adfPoint.Y);
    124
    125            //刷新地图显示
    126            if (adfMap.ImageBlendingMode == ImageBlendingMode.WebTier)
    127            { 
    128                adfMap.Refresh(); 
    129            }
    130            else
    131            { 
    132                adfMap.RefreshResource(adfGraphicsMapFunctionality.Resource.Name); 
    133            }
    134
    135        }
    136    }
    3.在Toolbar2的ToolbarItems中在添加一个DropDownBox然后设置相应的属性，具体如下：

    1<esri:DropDownBox ClientAction="" DropDownListWidth="100" Items="&lt;Items&gt;&lt;ListItem Text=&quot;Red_Blue&quot; Value=&quot;Red_Blue&quot; Selected=&quot;True&quot; /&gt;&lt;ListItem Text=&quot;Yellow_Green&quot; Value=&quot;Yellow_Green&quot; Selected=&quot;False&quot; /&gt;&lt;ListItem Text=&quot;Orange_Purple&quot; Value=&quot;Orange_Purple&quot; Selected=&quot;False&quot; /&gt;&lt;/Items&gt;"
    2                          JavaScriptFile="" Label="Colors:" LabelWidth="100" Name="DropDownBoxColor" SelectedIndex="0"
    3                          ServerActionAssembly="AddGraphics" ServerActionClass="AddGraphics.FeatureDropDownColor" />

    4.在GraphicPointTools.cs中新增加FeatureDropDownColor类来实现上面的DropDownBox的功能，具体代码和说明如下：

     1public class FeatureDropDownColor : IMapServerDropDownBoxAction
     2    {
     3        void IServerAction.ServerAction(ToolbarItemInfo toolbarItemInfo)
     4        {
     5            //获取地图控件
     6            ESRI.ArcGIS.ADF.Web.UI.WebControls.Map adfMap =(ESRI.ArcGIS.ADF.Web.UI.WebControls.Map)toolbarItemInfo.BuddyControls[0];
     7            //获取DropDownBoxColor控件
     8            DropDownBox adfDropDownBox =(DropDownBox)toolbarItemInfo.Toolbar.ToolbarItems.Find("DropDownBoxColor");
     9            //获取DropDownBoxColor的选择值
    10            string selectedColor = adfDropDownBox.SelectedValue;
    11            //MapFunctionality
    12            ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapFunctionality adfGraphicsMapFunctionality = null;
    13            foreach (ESRI.ArcGIS.ADF.Web.DataSources.IMapFunctionality mapFunctionality in adfMap.GetFunctionalities())
    14            {
    15                if (mapFunctionality.Resource.Name == "ADFGraphicsResource")
    16                {
    17                    adfGraphicsMapFunctionality =(ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapFunctionality)mapFunctionality;
    18                    break;
    19                }
    20            }
    21            //当为null的时候调用Utility.ProcessError方法弹出提示框
    22            if (adfGraphicsMapFunctionality == null)
    23            {
    24                adfMap.CallbackResults.CopyFrom(Utility.ProcessError("ADF graphics functionality not found"));
    25                return;
    26            }
    27
    28            //FeatureGraphicLayer类似feature layer，能建立属性信息，并能基于属性来符号化。图层只能存储同一图形类型。FeatureGraphicLayer可以支持查询。
    29            ESRI.ArcGIS.ADF.Web.Display.Graphics.FeatureGraphicsLayer featureGraphicsLayer = null;
    30            //从adfGraphicsMapFunctionality获取名为Feature Graphics的DataTable
    31            foreach (System.Data.DataTable dataTable in adfGraphicsMapFunctionality.GraphicsDataSet.Tables)
    32            {
    33                if (dataTable.TableName == "Feature Graphics")
    34                {
    35                    featureGraphicsLayer = (ESRI.ArcGIS.ADF.Web.Display.Graphics.FeatureGraphicsLayer)dataTable;
    36                    break;
    37                }
    38            }
    39
    40            //如果Feature Graphics的DataTable为null,设置DropDownBoxColor为原始值，同时调用Utility.ProcessError方法弹出提示框
    41            if (featureGraphicsLayer == null)
    42            {
    43                //设置DropDownBoxColor为原始值的脚本
    44                string jsResetDropDownList = string.Format("document.getElementById('{0}{1}{2}').value = 'Red_Blue'",toolbarItemInfo.Toolbar.ClientID, adfDropDownBox.Name, adfDropDownBox.Type);
    45                //执行上面的脚本
    46                CallbackResult resetDropDownListCallbackResult =new CallbackResult(null, null, "javascript", jsResetDropDownList);
    47                adfMap.CallbackResults.Add(resetDropDownListCallbackResult);
    48                //调用Utility.ProcessError方法弹出提示框
    49                adfMap.CallbackResults.CopyFrom(Utility.ProcessError("ADF feature graphics layer not found"));
    50                return;
    51            }
    52
    53            //获取当前的Renderer
    54            ESRI.ArcGIS.ADF.Web.Display.Renderer.ValueMapRenderer<int> currentValueMapRenderer =(ESRI.ArcGIS.ADF.Web.Display.Renderer.ValueMapRenderer<int>)featureGraphicsLayer.Renderer;
    55            //获取当前的ValueCollection
    56            ESRI.ArcGIS.ADF.Web.Display.Renderer.ValueCollection<int> currentValueCollection =currentValueMapRenderer.Values;
    57
    58            ESRI.ArcGIS.ADF.Web.Display.Renderer.UniqueValue<int> currentZeroUniqueValue =(ESRI.ArcGIS.ADF.Web.Display.Renderer.UniqueValue<int>)currentValueCollection[0];
    59            ESRI.ArcGIS.ADF.Web.Display.Renderer.UniqueValue<int> currentOneUniqueValue =(ESRI.ArcGIS.ADF.Web.Display.Renderer.UniqueValue<int>)currentValueCollection[1];
    60
    61            ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol currentZeroSymbol =(ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol)currentZeroUniqueValue.Symbol;
    62            ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol currentOneSymbol =(ESRI.ArcGIS.ADF.Web.Display.Symbol.SimpleMarkerSymbol)currentOneUniqueValue.Symbol;
    63
    64            //更加不同的颜色设置不同的显示颜色
    65            switch (selectedColor)
    66            {
    67                case "Red_Blue":
    68                    currentZeroSymbol.Color = System.Drawing.Color.Red;
    69                    currentOneSymbol.Color = System.Drawing.Color.Blue;
    70                    break;
    71                case "Yellow_Green":
    72                    currentZeroSymbol.Color = System.Drawing.Color.Yellow;
    73                    currentOneSymbol.Color = System.Drawing.Color.Green;
    74                    break;
    75                case "Orange_Purple":
    76                    currentZeroSymbol.Color = System.Drawing.Color.Orange;
    77                    currentOneSymbol.Color = System.Drawing.Color.Purple;
    78                    break;
    79                default:
    80                    break;
    81            }
    82
    83            //刷新Toc1显示
    84            Toc adfToc = (Toc)Utility.FindControl("Toc1", adfMap.Page);
    85            adfToc.Refresh();
    86            adfMap.CallbackResults.CopyFrom(adfToc.CallbackResults);
    87
    88            //刷新地图显示
    89            if (adfMap.ImageBlendingMode == ImageBlendingMode.WebTier)
    90            { 
    91                adfMap.Refresh(); 
    92            }
    93            else
    94            { 
    95                adfMap.RefreshResource(adfGraphicsMapFunctionality.Resource.Name); 
    96            }
    97        }
    98    }

    5.这样就完成了添加上的点的颜色变更的功能，然后在Toolbar2的ToolbarItems中在添加一个DropDownBox然后设置相应的属性用来实现变换添加点的显示形状的功能，具体如下：

    1<esri:DropDownBox ClientAction="" DropDownListWidth="100" Items="&lt;Items&gt;&lt;ListItem Text=&quot;Circle&quot; Value=&quot;Circle&quot; Selected=&quot;True&quot; /&gt;&lt;ListItem Text=&quot;Square&quot; Value=&quot;Square&quot; Selected=&quot;False&quot; /&gt;&lt;ListItem Text=&quot;Star&quot; Value=&quot;Star&quot; Selected=&quot;False&quot; /&gt;&lt;/Items&gt;"
    2                          JavaScriptFile="" Label="Type:" LabelWidth="100" Name="DropDownBoxSymbol" SelectedIndex="0"
    3                          ServerActionAssembly="AddGraphics" ServerActionClass="AddGraphics.FeatureDropDownSymbol" />
    6.在GraphicPointTools.cs中新增加FeatureDropDownSymbol类来实现上面的DropDownBoxSymbol的功能，具体代码和说明如下：
     1public class FeatureDropDownSymbol : IMapServerDropDownBoxAction
     2    {
     3        IServerAction Members
    96
    97    }
    7.这样就完成了添加点的形状变换的功能了。本例子到这里也分析结束了，关于其中的MapTips 的功能好像有问题了这里就暂时不讲了。
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  • 原文地址：https://www.cnblogs.com/hll2008/p/1271636.html
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