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| ESRI.ArcGIS.ADF.IMS | |
| UniqueLabelValue Class | |
| Members Example See Also Send Feedback | |
| ESRI.ArcGIS.ADF.IMS.Display.Renderer Namespace : UniqueLabelValue Class |
Object Model
Syntax
| Visual Basic (Declaration) | |
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<SerializableAttribute()> Public Class UniqueLabelValue Inherits LabelValue | |
| Visual Basic (Usage) |  Copy Code |
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Dim instance As UniqueLabelValue | |
| C# | |
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[SerializableAttribute()] public class UniqueLabelValue : LabelValue | |
Example
The following example displays the names of capitals and non-capitals with different font and label characteristics. A ValueMapLabelRenderer is created, and two UniqueLabelValue objects are created, one for capitals and one for non-capitals. These are added to the renderer, and the renderer is assigned to the existing cities layer.
| Visual Basic | Copy Code |
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' Create a new ValueMapLabelRenderer and set value and label fields Dim valueMapLblRend As New ValueMapLabelRenderer() valueMapLblRend.ValueField = "CAPITAL" valueMapLblRend.LabelField = "NAME" Dim textFont As FontInfo Dim uniqueValue As UniqueLabelValue ' Create unique values for capitals and non-capitals uniqueValue = New UniqueLabelValue() uniqueValue.Value = "Y" uniqueValue.SymbolLabel = "Capital" uniqueValue.ComparisonMethod = ComparisonMethod.IsExact textFont = New FontInfo("Arial", 18, Drawing.Color.Red, FontStyle.Bold) uniqueValue.Symbol = New TextSymbol(textFont, TextCasing.AllUpper, Drawing.Color.Empty) valueMapLblRend.Values.Add(uniqueValue) uniqueValue = New UniqueLabelValue() uniqueValue.Value = "N" uniqueValue.SymbolLabel = "Non-capital" uniqueValue.ComparisonMethod = ComparisonMethod.IsExact textFont = New FontInfo("Arial", 11, Drawing.Color.Gray, FontStyle.Regular) uniqueValue.Symbol = New TextSymbol(textFont, TextCasing.None, Drawing.Color.Empty) valueMapLblRend.Values.Add(uniqueValue) ' Assign the ValueMapLabelRenderer to an existing point layer Dim layer As FeatureLayer = mapView.Layers.FindByName("Cities") layer.Renderer = valueMapLblRend | |
| C# | Copy Code |
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// Create a new ValueMapLabelRenderer and set value and label fields ValueMapLabelRenderer valueMapLblRend = new ValueMapLabelRenderer(); valueMapLblRend.ValueField = "CAPITAL"; valueMapLblRend.LabelField = "NAME"; FontInfo textFont; UniqueLabelValue uniqueValue; // Create unique values for capitals and non-capitals uniqueValue = new UniqueLabelValue(); uniqueValue.Value = "Y"; uniqueValue.SymbolLabel = "Capital"; uniqueValue.ComparisonMethod = ComparisonMethod.IsExact; textFont = new FontInfo("Arial", 18, Drawing.Color.Red, FontStyle.Bold); uniqueValue.Symbol = new TextSymbol(textFont, TextCasing.AllUpper, Drawing.Color.Empty); valueMapLblRend.Values.Add(uniqueValue); uniqueValue = new UniqueLabelValue(); uniqueValue.Value = "N"; uniqueValue.SymbolLabel = "Non-capital"; uniqueValue.ComparisonMethod = ComparisonMethod.IsExact; textFont = new FontInfo("Arial", 11, Drawing.Color.Gray, FontStyle.Regular); uniqueValue.Symbol = new TextSymbol(textFont, TextCasing.None, Drawing.Color.Empty); valueMapLblRend.Values.Add(uniqueValue); // Assign the ValueMapLabelRenderer to an existing point layer FeatureLayer layer = mapView.Layers.FindByName("Cities"); layer.Renderer = valueMapLblRend; | |
Remarks
Unique values are typically used for qualitative data, such as for rendering based a string field, for example, zoning type.
Requirements
Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family