I am a newbie to Silverlight application, and recently need to develop a ArcGIS system written in C# via visual studio community 2022. The main problem I meet is the ArcGIS tag using in .xaml files. Since microsoft has no longer maintain Silverlight, the dll problem in system developing become hard to cover. the code snippet I use is as below:
<UserControl x:Class="SilverlightApplication20230823.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:esri="http://schemas.esri.com/arcgis/client/2009"
xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"
xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit"
xmlns:Anno="http://schemas.microsoft.com/expression/blend/extensions/annotations/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400">
<Grid x:Name="LayoutRoot" Background="White">
<TextBlock Text="Waiting"></TextBlock>
<esri:SimpleFillSymbol x:Key="DarkRedFillSymbol" Fill="#CC781F1D" BorderBrush="#FF7E1A17" BorderThickness="1" />
</Grid>
</UserControl>
the dlls and its version is as following:
ESRI.ArcGIS.Client 10.2.5.825
ESRI.ArcGIS.Client.Behaviors 10.2.5.825
ESRI.ArcGIS.Client.Toolkit 10.2.5.823
ESRI.ArcGIS.Client.Toolkit.DataSources 10.2.1.431
the code behind is following:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Xaml;
using System.Runtime.Serialization;
using ESRI.ArcGIS.Client;
using ESRI.ArcGIS.Client.Geometry;
using ESRI.ArcGIS.Client.Symbols;
using ESRI.ArcGIS.Client.Tasks;
namespace SilverlightApplication20230823
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
}
}
}
The error message in browser showing like this: "Unhandled Error in Silverlight Application, can not turn 'ESRI.ArcGIS.Client.Symbols.SimpleFillSymbol' instance to 'System.Windows.Controls.UIElementCollection'". Is there any solution to cover this problem , thanks a lot.
