Fix issue: MultiSelectComboBox support single multiple columns （#195）

Author: yanjinhuagood

src/WPFDevelopers.Samples.Shared/ExampleViews/MultiSelectComboBoxExample.xaml

@@ -132,6 +132,43 @@
                     </wd:MultiSelectComboBox.View>
                 </wd:MultiSelectComboBox>
             </Grid>
+            <Grid HorizontalAlignment="Center" wd:PanelHelper.Spacing="3">
+                <Grid.ColumnDefinitions>
+                    <ColumnDefinition Width="Auto" />
+                    <ColumnDefinition />
+                </Grid.ColumnDefinitions>
+                <TextBlock VerticalAlignment="Center" Text="证券代码:" />
+                <wd:MultiSelectComboBox
+                    Grid.Column="1"
+                    Width="200"
+                    HorizontalAlignment="Left"
+                    wd:ElementHelper.CornerRadius="3"
+                    wd:ElementHelper.Watermark="请选择股票代码"
+                    DisplayMemberPath="StkFull"
+                    IsSelectAllActive="True"
+                    ItemsSource="{Binding StkInfoList, RelativeSource={RelativeSource AncestorType=local:MultiSelectComboBoxExample}}"
+                    SearchWatermark="请选择股票代码"
+                    ShowType="Tag">
+                    <wd:MultiSelectComboBox.View>
+                        <GridView>
+                            <GridViewColumn Width="30">
+                                <GridViewColumn.CellTemplate>
+                                    <DataTemplate>
+                                        <CheckBox
+                                            HorizontalAlignment="Center"
+                                            VerticalAlignment="Center"
+                                            wd:ElementHelper.CornerRadius="3"
+                                            IsChecked="{Binding IsSelected, RelativeSource={RelativeSource AncestorType={x:Type ListViewItem}}}" />
+                                    </DataTemplate>
+                                </GridViewColumn.CellTemplate>
+                            </GridViewColumn>
+                            <GridViewColumn DisplayMemberBinding="{Binding StkTypeName}" Header="类型" />
+                            <GridViewColumn DisplayMemberBinding="{Binding StkId}" Header="代码" />
+                            <GridViewColumn DisplayMemberBinding="{Binding StkName}" Header="名称" />
+                        </GridView>
+                    </wd:MultiSelectComboBox.View>
+                </wd:MultiSelectComboBox>
+            </Grid>
         </UniformGrid>
         <controls:CodeViewer.SourceCodes>
             <controls:SourceCodeModel CodeSource="/WPFDevelopers.SamplesCode;component/ExampleViews/MultiSelectComboBoxExample.xaml" CodeType="Xaml" />

src/WPFDevelopers.Samples.Shared/ExampleViews/MultiSelectComboBoxExample.xaml.cs

@@ -28,6 +28,18 @@ public ObservableCollection<UserInfo> ItemsSource
 
         public static readonly DependencyProperty ItemsSourceProperty =
             DependencyProperty.Register("ItemsSource", typeof(ObservableCollection<UserInfo>), typeof(MultiSelectComboBoxExample), new PropertyMetadata(null));
+
+
+        public ObservableCollection<StkInfo> StkInfoList
+        {
+            get { return (ObservableCollection<StkInfo>)GetValue(StkInfoListProperty); }
+            set { SetValue(StkInfoListProperty, value); }
+        }
+
+        public static readonly DependencyProperty StkInfoListProperty =
+            DependencyProperty.Register("StkInfoList", typeof(ObservableCollection<StkInfo>), typeof(MultiSelectComboBoxExample), new PropertyMetadata(null));
+
+
         public MultiSelectComboBoxExample()
         {
             InitializeComponent();
@@ -44,6 +56,13 @@ private void MultiSelectComboBoxExample_Loaded(object sender, RoutedEventArgs e)
 
             ItemsSource = new ObservableCollection<UserInfo>(list2);
             SelectedItems = new ObservableCollection<UserInfo>(list2.Where(x => x.ID == "1" || x.ID == "3"));
+
+            var stkInfos = new List<StkInfo>();
+            stkInfos.Add(new StkInfo() { StkName = "平安银行", StkId = "000001", StkType = "sz", StkTypeName = "深Ａ" });
+            stkInfos.Add(new StkInfo() { StkName = "上证指数", StkId = "000001", StkType = "sh", StkTypeName = "指数" });
+            stkInfos.Add(new StkInfo() { StkName = "浦发银行", StkId = "600000", StkType = "sh", StkTypeName = "沪Ａ" });
+            StkInfoList = new ObservableCollection<StkInfo>(stkInfos);
+
         }
 
         private void Button_Click(object sender, System.Windows.RoutedEventArgs e)
@@ -54,4 +73,19 @@ private void Button_Click(object sender, System.Windows.RoutedEventArgs e)
             WPFDevelopers.Controls.MessageBox.Show(message, "选中内容", MessageBoxButton.OK, MessageBoxImage.Information);
         }
     }
+    public class StkInfo
+    {
+        public string StkId { get; set; }
+        public string StkName { get; set; }
+        public string StkType { get; set; }
+        public string StkTypeName { get; set; }
+        public string StkFull 
+        {
+            get
+            {
+                return StkType + StkId;
+            }
+        }
+
+    }
 }