Xceed DataGrid for WPF v7.3 Documentation
Xceed.Wpf.DataGrid Assembly / Xceed.Wpf.DataGrid Namespace / MergedHeaderCollection Class
Members Example


In This Topic
    MergedHeaderCollection Class
    In This Topic
    Represents a list of merged column headers.
    Object Model
    MergedHeaderCollection ClassMergedHeader Class
    Syntax
    'Declaration
     
    <DefaultMemberAttribute("Item")>
    <DebuggerTypeProxyAttribute(System.Collections.Generic.Mscorlib_CollectionDebugView`1)>
    <DebuggerDisplayAttribute("Count = {Count}")>
    Public Class MergedHeaderCollection 
       Inherits Xceed.Wpf.DataGrid.ContentElementCollection(Of MergedHeader)
    'Usage
     
    Dim instance As MergedHeaderCollection
    [DefaultMember("Item")]
    [DebuggerTypeProxy(System.Collections.Generic.Mscorlib_CollectionDebugView`1)]
    [DebuggerDisplay("Count = {Count}")]
    public class MergedHeaderCollection : Xceed.Wpf.DataGrid.ContentElementCollection<MergedHeader> 
    Remarks
    Used to set the MergedHeaders property.
    Example

    The following shows how to set up merged column headers.

    <xcdg:DataGridControl x:Name="grid"
                           ItemsSource="{Binding Source={StaticResource cvsTransactions}}"
                           ReadOnly="True"
                           NavigationBehavior="RowOnly">
       <xcdg:DataGridControl.Resources>
         <!-- These implicit styles that are local to this DataGridControl are an
                      elegant way to set some desired default values of various grid elements. -->
         <ResourceDictionary>
           <Style TargetType="xcdg:MergedColumnManagerRow">
             <Setter Property="AllowColumnReorder"
                     Value="{Binding ElementName=allowMergedColumnReorderCheckBox,Path=IsChecked}"/>
             <Setter Property="AllowColumnResize"
                     Value="{Binding ElementName=allowMergedColumnResizeCheckBox,Path=IsChecked}"/>
           </Style>
    
           <Style TargetType="xcdg:ColumnManagerRow">
             <Setter Property="AllowColumnReorder"
                     Value="{Binding ElementName=allowColumnReorderCheckBox,Path=IsChecked}"/>
             <Setter Property="AllowColumnResize"
                     Value="{Binding ElementName=allowColumnResizeCheckBox,Path=IsChecked}"/>
           </Style>
         </ResourceDictionary>
       </xcdg:DataGridControl.Resources>
    
       <xcdg:DataGridControl.MergedHeaders>
         <xcdg:MergedHeader>
           <xcdg:MergedHeader.MergedColumns>
             <xcdg:MergedColumn FieldName="Quarter1"
                                Title="Quarter 1"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="JanuarySummary,FebruarySummary,MarchSummary" />
             <xcdg:MergedColumn FieldName="Quarter2"
                                Title="Quarter 2"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="AprilSummary,MaySummary,JuneSummary" />
             <xcdg:MergedColumn FieldName="Quarter3"
                                Title="Quarter 3"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="JulySummary,AugustSummary,SeptemberSummary" />
             <xcdg:MergedColumn FieldName="Quarter4"
                                Title="Quarter 4"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="OctoberSummary,NovemberSummary,DecemberSummary" />
           </xcdg:MergedHeader.MergedColumns>
         </xcdg:MergedHeader>
         <xcdg:MergedHeader>
           <xcdg:MergedHeader.MergedColumns>
             <xcdg:MergedColumn FieldName="JanuarySummary"
                                Title="January Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="JanuaryIncome,JanuaryExpense" />
             <xcdg:MergedColumn FieldName="FebruarySummary"
                                Title="February Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="FebruaryIncome,FebruaryExpense" />
             <xcdg:MergedColumn FieldName="MarchSummary"
                                Title="March Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="MarchIncome,MarchExpense" />
             <xcdg:MergedColumn FieldName="AprilSummary"
                                Title="April Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="AprilIncome,AprilExpense" />
             <xcdg:MergedColumn FieldName="MaySummary"
                                Title="May Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="MayIncome,MayExpense" />
             <xcdg:MergedColumn FieldName="JuneSummary"
                                Title="June Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="JuneIncome,JuneExpense" />
             <xcdg:MergedColumn FieldName="JulySummary"
                                Title="July Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="JulyIncome,JulyExpense" />
             <xcdg:MergedColumn FieldName="AugustSummary"
                                Title="August Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="AugustIncome,AugustExpense" />
             <xcdg:MergedColumn FieldName="SeptemberSummary"
                                Title="September Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="SeptemberIncome,SeptemberExpense" />
             <xcdg:MergedColumn FieldName="OctoberSummary"
                                Title="October Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="OctoberIncome,OctoberExpense" />
             <xcdg:MergedColumn FieldName="NovemberSummary"
                                Title="November Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="NovemberIncome,NovemberExpense" />
             <xcdg:MergedColumn FieldName="DecemberSummary"
                                Title="December Transactions"
                                CellHorizontalContentAlignment="Center"
                                ChildColumnNames="DecemberIncome,DecemberExpense" />
           </xcdg:MergedHeader.MergedColumns>
         </xcdg:MergedHeader>
       </xcdg:DataGridControl.MergedHeaders>
    
       <xcdg:DataGridControl.Columns>
         <xcdg:Column FieldName="JanuaryIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="JanuaryExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="FebruaryIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="FebruaryExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="MarchIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="MarchExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="AprilIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="AprilExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="MayIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="MayExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="JuneIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="JuneExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="JulyIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="JulyExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="AugustIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="AugustExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="SeptemberIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="SeptemberExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="OctoberIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="OctoberExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="NovemberIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="NovemberExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="DecemberIncome"
                      Title="Income"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
         <xcdg:Column FieldName="DecemberExpense"
                      Title="Expense"
                      CellContentTemplate="{StaticResource currencyCellDataTemplate}" />
    
       </xcdg:DataGridControl.Columns>
    
       <xcdg:DataGridControl.View>
         <!-- In this sample, you can define this resource to specify the default
                      theme this DataGridControl will be in. This is not mandatory, so we
                      use a DynamicResource to silently ignore its absence. -->
         <xcdg:TableflowView Theme="{DynamicResource defaultTheme}"
                             AllowColumnChooser="{Binding Source={x:Static local:ConfigurationData.Singleton}, Path=AllowColumnChooser}"
                             ShowFixedColumnSplitter="{Binding Source={x:Static local:ConfigurationData.Singleton}, Path=ShowFixedColumnSplitter}" />
       </xcdg:DataGridControl.View>
    
     </xcdg:DataGridControl>
    Inheritance Hierarchy

    System.Object
       System.Collections.ObjectModel.Collection<T>
          Xceed.Wpf.DataGrid.ContentElementCollection<T>
             Xceed.Wpf.DataGrid.MergedHeaderCollection

    Public Properties
    Protected Properties
     NameDescription
    Protected Property (Inherited from System.Collections.ObjectModel.Collection<T>)
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    Public Methods
    Protected Methods
     NameDescription
    Protected MethodRemoves all items from the collection. (Inherited from Xceed.Wpf.DataGrid.ContentElementCollection<MergedHeader>)
    Protected MethodInserts a merged header at the specified index (Inherited from Xceed.Wpf.DataGrid.ContentElementCollection<MergedHeader>)
    Protected MethodOverridden. Merged headers cannot be moved. They can be only be removed and added back.  
    Protected MethodRaises the CollectionChanged event using the specified NotifyCollectionChangedEventArgs. (Inherited from Xceed.Wpf.DataGrid.ContentElementCollection<MergedHeader>)
    Protected MethodInvoked after an item is added. (Inherited from Xceed.Wpf.DataGrid.ContentElementCollection<MergedHeader>)
    Protected MethodOverridden. Invoked before an item is added.  
    Protected MethodInvoked after an item is removed. (Inherited from Xceed.Wpf.DataGrid.ContentElementCollection<MergedHeader>)
    Protected MethodOverridden. Invoked before an item is removed.  
    Protected MethodRaises the PropertyChanged event using the specified PropertyChangedEventArgs. (Inherited from Xceed.Wpf.DataGrid.ContentElementCollection<MergedHeader>)
    Protected MethodRemoves the merged header at the specified index. (Inherited from Xceed.Wpf.DataGrid.ContentElementCollection<MergedHeader>)
    Protected MethodOverridden. Merged headers cannot be replaced. They can be only be removed and added back.  
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    Public Events
     NameDescription
    Public EventRaised when a change occurs in the collection. (Inherited from Xceed.Wpf.DataGrid.ContentElementCollection<MergedHeader>)
    Public EventRaised when the value of a property is changed. (Inherited from Xceed.Wpf.DataGrid.ContentElementCollection<MergedHeader>)
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    Requirements

    Target Platforms: Windows 11, Windows 10, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

    See Also