Can you share with us your code? The MapTip displays values from graphic attributes, even when these graphics come as a result of a Query. I am using the following SDK sample: http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#GraphicsMapTip with the following code-change.In this sample, I have 2 attributes that I display in my MapTip. One is from the service and the other is a made up attribute that I modify in my code. You can see in the Output window its previous value and in the Maptip its new value. I see that the map tip is updated. If you have some code to share or steps to reproduce, that will be great.
<Grid.Resources>
<esri:SimpleRenderer x:Key="MyRenderer">
<esri:SimpleRenderer.Symbol>
<esri:SimpleFillSymbol Fill="Red"/>
</esri:SimpleRenderer.Symbol>
</esri:SimpleRenderer>
</Grid.Resources>
<esri:GraphicsLayer ID="MyGraphicsLayer" Renderer="{StaticResource MyRenderer}" MouseEnter="GraphicsLayer_MouseEnter">
<esri:GraphicsLayer.MapTip>
<StackPanel>
<TextBlock Text="{Binding [MyAttribute]}"/>
<TextBlock Text="{Binding [HOUSEHOLDS]}"/>
</StackPanel>
</esri:GraphicsLayer.MapTip>
</esri:GraphicsLayer>
void StatesGraphicsLayerQueryTask_ExecuteCompleted(object sender, QueryEventArgs e)
{
GraphicsLayer layer = this.MyMap.Layers["MyGraphicsLayer"] as GraphicsLayer;
foreach (var g in e.FeatureSet.Features)
{
Random r = new Random();
g.Attributes["MyAttribute"] = r.Next(0, 10);
layer.Graphics.Add(g);
}
}
private void GraphicsLayer_MouseEnter(object sender, GraphicMouseEventArgs e)
{
var oldVal = (int)e.Graphic.Attributes["MyAttribute"];
System.Diagnostics.Debug.WriteLine(oldVal);
e.Graphic.Attributes["MyAttribute"] = oldVal + 1;
}
