Bug: CircleEventArgs and MapCircleEventArgs Return Incorrect Values for ScreenRadius and M

Description

CircleEventArgs and MapCircleEventArgs are returning incorrect values for the ScreenRadius and MapRadius properties when using the ArcGIS Server .NET Web ADF.

Cause

This is a known issue.

Workaround

Access the MapCircleEventsArgs MapRadius property and perform additional calculations. To determine the correct map radius, divide the MapCircleEventsArgs MapRadius value by 4. To determine the correct screen radius, divide the MapCircleEventsArgs MapRadius value by 4 and then divide the result by the map to screen ratio (resolution).

Code:
public void ServerAction(ESRI.ArcGIS.ADF.Web.UI.WebControls.ToolEventArgs args)
{
    Map mmap = args.Control as Map;
    MapCircleEventArgs mcea = (MapCircleEventArgs)args;
           
    double maptoscreenratio = mmap.Extent.Width / mmap.ViewWidth;
    double mapradius = mcea.MapRadius / 4;
    double screenradius = (mcea.MapRadius / 4) / maptoscreenratio;

    System.Diagnostics.Debug.Print("Map To Screen Ratio: {0}", maptoscreenratio);
    System.Diagnostics.Debug.Print("Map Radius: {0} units)", mapradius);
    System.Diagnostics.Debug.Print("Screen Radius: {0} pixels)", screenradius);
}

Article ID:000010205

Software:

ArcGIS Server

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CircleEventArgs and MapCircleEventArgs return incorrect values for ScreenRadius and MapRadius

Description

Cause

Workaround

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