WPF ComboBox 多選下拉框

如圖

 <DataGridTemplateColumn Width="240">
                            <DataGridTemplateColumn.Header>
                                <Grid >
                                    <pu:MultiComboBox x:Name="MultiSelectCom_NewLYSFs" 
                                                  DisplayMemberPath="Content"
                                                  Watermark="選擇省份"
                                                  CornerRadius="2"
                                                  IsSearchTextBoxVisible ="True"
                                                  Height="22"
                                                  Width="200"
                                                  Margin="0,0,0,0"     
                                                  SearchText="搜索..."
                                                  SearchTextChanged="MultiSelectCom_NewLYSFs_SearchTextChanged"
                                                  SelectionChanged="MultiSelectCom_NewLYSFs_SelectionChanged">
                                        <pu:MultiComboBox.CheckBoxStyle>
                                            <Style TargetType="CheckBox"
                                               BasedOn="{StaticResource {x:Type CheckBox}}">
                                                <Setter Property="Background"
                                                    Value="#6649A9C0" />
                                                <Setter Property="pu:CheckBoxHelper.CheckedBackground"
                                                    Value="#49A9C0" />
                                            </Style>
                                        </pu:MultiComboBox.CheckBoxStyle>
                                    </pu:MultiComboBox>
                                </Grid>
                            </DataGridTemplateColumn.Header>
                            <DataGridTemplateColumn.CellTemplate>
                                <DataTemplate>
                                    <Grid >
                                        <!--Text="{Binding NewLYSF, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"-->
                                        <pu:MultiComboBox ItemsSource="{Binding SourceItems , Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                                                          DisplayMemberPath="Content"                                           
                                                          Watermark="{Binding NewLYSF, Mode=TwoWay, UpdateSourceTrigger= Explicit}" 
                                                       
                                                          ToolTip="{Binding NewLYSF, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged}"
                                                          CornerRadius="2"
                                                          Height="22"                                                           
                                                          Width="200"
                                                          SearchText="搜索..."
                                                          SearchTextChanged="MultiSelectCom_NewLYSFs_SearchTextChanged"
                                                          IsSearchTextBoxVisible ="True"
                                                          Margin="0,0,0,0"
                                                  >
                                            <pu:MultiComboBox.CheckBoxStyle>
                                                <Style TargetType="CheckBox" BasedOn="{StaticResource {x:Type CheckBox}}">
                                                    <Setter Property="Background"
                                                    Value="#6649A9C0" />
                                                    <Setter Property="pu:CheckBoxHelper.CheckedBackground"
                                                    Value="#49A9C0" />
                                                </Style>
                                            </pu:MultiComboBox.CheckBoxStyle>
                                        </pu:MultiComboBox>
                                    </Grid>
                                </DataTemplate>
                            </DataGridTemplateColumn.CellTemplate>
                        </DataGridTemplateColumn>

xmlns:pu="clr-namespace:Panuon.UI.Silver;assembly=Panuon.UI.Silver"

  下載地址：https://download.csdn.net/download/m0_37137902/12570880