AE+C# 图层中增加相应属性标注

if (axMapControl1.LayerCount > 0)
{
    IGeoFeatureLayer pGeoFeatureLayer;
    ILineLabelPosition pLineLabelPosition;
    ILabelEngineLayerProperties pLabelEngineLayerProperties;
    IAnnotateLayerProperties pAnnotateLayerProperties;

    pGeoFeatureLayer = (IGeoFeatureLayer)axMapControl1.get_Layer(0);
    pGeoFeatureLayer.AnnotationProperties.Clear();

    pLineLabelPosition = new LineLabelPosition();
    pLineLabelPosition.Above = false;
    pLineLabelPosition.AtEnd = false;
    pLineLabelPosition.Below = false;
    pLineLabelPosition.Horizontal = false;
    pLineLabelPosition.InLine = true;
    pLineLabelPosition.OnTop = true;
    pLineLabelPosition.Parallel = true;
    pLineLabelPosition.ProduceCurvedLabels = true;

    ITextSymbol pTextSymbol = new TextSymbol();
    IColor pColor = new RgbColor();
    pColor.RGB = 255;
    pTextSymbol.Size = 8;
    pTextSymbol.Font.Name = "宋体";
    pTextSymbol.Color = pColor;

    pLabelEngineLayerProperties = new LabelEngineLayerProperties() as ILabelEngineLayerProperties;
    pLabelEngineLayerProperties.Symbol = pTextSymbol;
    pLabelEngineLayerProperties.IsExpressionSimple = true;
    pLabelEngineLayerProperties.Expression = "[NAME]";//需要中括号,这里显示NAME字段属性
    pLabelEngineLayerProperties.BasicOverposterLayerProperties.LineLabelPosition = pLineLabelPosition;

    pAnnotateLayerProperties = (IAnnotateLayerProperties)pLabelEngineLayerProperties;
    pAnnotateLayerProperties.DisplayAnnotation = true;
    pAnnotateLayerProperties.FeatureLayer = pGeoFeatureLayer;

    pAnnotateLayerProperties.LabelWhichFeatures = esriLabelWhichFeatures.esriAllFeatures;
    pAnnotateLayerProperties.WhereClause = "";

    pGeoFeatureLayer.AnnotationProperties.Add(pAnnotateLayerProperties);
    pGeoFeatureLayer.DisplayAnnotation = true;
    axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGraphics, null, null);
}

参考来源：http://blog.csdn.net/suinon/article/details/5705421