ArcEngine关于单位转换示例

示例界面：

转换代码：

 1     private void Button1_Click(object sender, System.Windows.RoutedEventArgs e)
 2         {
 3             // Get the AreaUnits value string name.
 4             string theSelectionText = ComboBox1.SelectedValue.ToString();
 5 
 6             // Get the input Square Meters value.
 7             double theInputValue = System.Convert.ToDouble(TextBox_Input_1.Text);
 8 
 9             // Create a placeholder output AreaUnits output value from the .ConvertFromSquareMeters Method. 
10             double theOutputValue = 0;
11 
12             // For each AreaUnits type perform the .ConvertFromSquareMeters calculation.
13             if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.Acres.Name)
14             {
15                 theOutputValue = Esri.ArcGISRuntime.Geometry.AreaUnits.Acres.ConvertFromSquareMeters(theInputValue);
16             }
17             else if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.Ares.Name)
18             {
19                 theOutputValue = Esri.ArcGISRuntime.Geometry.AreaUnits.Ares.ConvertFromSquareMeters(theInputValue);
20             }
21             else if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.Hectares.Name)
22             {
23                 theOutputValue = Esri.ArcGISRuntime.Geometry.AreaUnits.Hectares.ConvertFromSquareMeters(theInputValue);
24             }
25             else if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.SquareCentimeters.Name)
26             {
27                 theOutputValue = Esri.ArcGISRuntime.Geometry.AreaUnits.SquareCentimeters.ConvertFromSquareMeters(theInputValue);
28             }
29             else if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.SquareDecimeters.Name)
30             {
31                 theOutputValue = Esri.ArcGISRuntime.Geometry.AreaUnits.SquareDecimeters.ConvertFromSquareMeters(theInputValue);
32             }
33             else if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.SquareFeet.Name)
34             {
35                 theOutputValue = Esri.ArcGISRuntime.Geometry.AreaUnits.SquareFeet.ConvertFromSquareMeters(theInputValue);
36             }
37             else if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.SquareInches.Name)
38             {
39                 theOutputValue = Esri.ArcGISRuntime.Geometry.AreaUnits.SquareInches.ConvertFromSquareMeters(theInputValue);
40             }
41             else if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.SquareKilometers.Name)
42             {
43                 theOutputValue = Esri.ArcGISRuntime.Geometry.AreaUnits.SquareKilometers.ConvertFromSquareMeters(theInputValue);
44             }
45             else if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.SquareMeters.Name)
46             {
47                 theOutputValue = Esri.ArcGISRuntime.Geometry.AreaUnits.SquareMeters.ConvertFromSquareMeters(theInputValue);
48             }
49             else if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.SquareMiles.Name)
50             {
51                 theOutputValue = Esri.ArcGISRuntime.Geometry.AreaUnits.SquareMiles.ConvertFromSquareMeters(theInputValue);
52             }
53             else if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.SquareMillimeters.Name)
54             {
55                 theOutputValue = Esri.ArcGISRuntime.Geometry.AreaUnits.SquareMillimeters.ConvertFromSquareMeters(theInputValue);
56             }
57             else if (theSelectionText == Esri.ArcGISRuntime.Geometry.AreaUnits.SquareYards.Name)
58             {
59                 // NOTE: Using this long version you can also obtain information on the AreaUnit Class.
60                 Esri.ArcGISRuntime.Geometry.AreaUnit myUnit_SquareYards = (Esri.ArcGISRuntime.Geometry.AreaUnit)Esri.ArcGISRuntime.Geometry.AreaUnit.Create(Esri.ArcGISRuntime.Geometry.AreaUnits.SquareYards.Id);
61                 theOutputValue = myUnit_SquareYards.ConvertFromSquareMeters(theInputValue);
62 
63                 // Additional AreaUnit Properties that you could make use of in another application
64                 int myAreaUnit_SquareYards_ID = myUnit_SquareYards.Id;
65                 string myAreaUnit_SquareYards_Name = myUnit_SquareYards.Name;
66                 Esri.ArcGISRuntime.Geometry.UnitType myAreaUnit_SquareYards_UnitType = myUnit_SquareYards.UnitType;
67             }
68 
69             // Display the other XXXX AreaUnits values.
70             TextBox_Output_1.Text = theOutputValue.ToString();
71         }

参考网址：https://developers.arcgis.com/net/desktop/api-reference/

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原文地址：https://www.cnblogs.com/jinlun/p/6004762.html