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saravanan.ayyanar
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This example explains how to merge cells in a row in wpf treegrid
1 parent 3473e09 commit caffc9f

19 files changed

+1193
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‎App.config‎

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<?xml version="1.0" encoding="utf-8"?>
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<configuration>
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<startup>
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<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
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</startup>
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</configuration>

‎App.ico‎

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‎App.xaml‎

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<Application x:Class="Merging.App"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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StartupUri="MainWindow.xaml">
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<Application.Resources />
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</Application>

‎App.xaml.cs‎

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#region Copyright Syncfusion Inc. 2001-2019.
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// Copyright Syncfusion Inc. 2001-2019. All rights reserved.
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// Use of this code is subject to the terms of our license.
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// A copy of the current license can be obtained at any time by e-mailing
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// licensing@syncfusion.com. Any infringement will be prosecuted under
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// applicable laws.
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.Data;
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using System.Linq;
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using System.Threading.Tasks;
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using System.Windows;
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namespace Merging
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{
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/// <summary>
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/// Interaction logic for App.xaml
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/// </summary>
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public partial class App : Application
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{
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public App()
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{
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Syncfusion.Licensing.SyncfusionLicenseProvider.RegisterLicense(Syncfusion.Licensing.DemoCommon.FindLicenseKey());
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}
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}
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}

‎Behaviors/QueryCoveredRangeBehavior.cs‎

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#region Copyright Syncfusion Inc. 2001-2019.
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// Copyright Syncfusion Inc. 2001-2019. All rights reserved.
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// Use of this code is subject to the terms of our license.
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// A copy of the current license can be obtained at any time by e-mailing
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// licensing@syncfusion.com. Any infringement will be prosecuted under
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// applicable laws.
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#endregion
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using Syncfusion.UI.Xaml.Grid;
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using Syncfusion.UI.Xaml.TreeGrid;
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using System.Windows.Interactivity;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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namespace Merging
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{
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public delegate void TreeGridRequestTreeItemsHandler(object sender, RoutedEventArgs args);
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/// <summary>
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/// Handles the cell merging in SfTreeGrid.
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/// </summary>
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public class QueryCoveredRangeBehavior : Behavior<SfTreeGrid>
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{
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/// <summary>
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/// Called after the behavior is attached to an AssociatedObject.
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/// </summary>
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/// <remarks>Override this to hook up functionality to the AssociatedObject.</remarks>
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protected override void OnAttached()
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{
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var loader= new TreeGridRequestTreeItemsHandler(AssociatedObject_Loaded);
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loader.Invoke(null, null);
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}
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public void AssociatedObject_Loaded(object sender, RoutedEventArgs e)
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{
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this.AssociatedObject.QueryCoveredRange += AssociatedObject_QueryCoveredRange;
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}
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public void AssociatedObject_QueryCoveredRange(object sender, TreeGridQueryCoveredRangeEventArgs e)
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{
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var treeNode = this.AssociatedObject.GetNodeAtRowIndex(e.RowColumnIndex.RowIndex);
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if (treeNode != null && treeNode.HasChildNodes)
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{
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if (e.RowColumnIndex.ColumnIndex >= 1 && e.RowColumnIndex.ColumnIndex <= this.AssociatedObject.Columns.Count)
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{
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e.Range = new TreeGridCoveredCellInfo(0, this.AssociatedObject.Columns.Count, e.RowColumnIndex.RowIndex);
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e.Handled = true;
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}
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}
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}
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/// <summary>
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/// Called when the behavior is being detached from its AssociatedObject, but before it has actually occurred.
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/// </summary>
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/// <remarks>Override this to unhook functionality from the AssociatedObject.</remarks>
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protected override void OnDetaching()
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{
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base.OnDetaching();
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this.AssociatedObject.Loaded -= AssociatedObject_Loaded;
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this.AssociatedObject.QueryCoveredRange -= AssociatedObject_QueryCoveredRange;
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}
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}
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}

‎Behaviors/RequestTreeItemsBehavior.cs‎

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#region Copyright Syncfusion Inc. 2001-2019.
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// Copyright Syncfusion Inc. 2001-2019. All rights reserved.
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// Use of this code is subject to the terms of our license.
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// A copy of the current license can be obtained at any time by e-mailing
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// licensing@syncfusion.com. Any infringement will be prosecuted under
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// applicable laws.
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#endregion
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using Merging;
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using Syncfusion.UI.Xaml.Grid;
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using Syncfusion.UI.Xaml.TreeGrid;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Interactivity;
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namespace Merging
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{
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class RequestTreeItemsBehavior : Behavior<SfTreeGrid>
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{
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EmployeeRepository viewModel;
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protected override void OnAttached()
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{
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base.OnAttached();
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viewModel = this.AssociatedObject.DataContext as EmployeeRepository;
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this.AssociatedObject.RequestTreeItems += AssociatedObject_RequestTreeItems;
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}
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void AssociatedObject_RequestTreeItems(object sender, TreeGridRequestTreeItemsEventArgs args)
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{
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if (args.ParentItem == null)
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{
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//get the root list - get all employees who have no boss
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args.ChildItems = EmployeeRepository.GetEmployees().Where(x => x.ReportsTo == -1); //get all employees whose boss's id is -1 (no boss)
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}
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else //if ParentItem not null, then set args.ChildList to the child items for the given ParentItem.
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{
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//get the children of the parent object
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Employee emp = args.ParentItem as Employee;
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if (emp != null)
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{
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//get all employees that report to the parent employee
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args.ChildItems = EmployeeRepository.GetEmployees().Where(x => x.ReportsTo == emp.Id);
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}
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}
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}
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protected override void OnDetaching()
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{
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base.OnDetaching();
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this.AssociatedObject.RequestTreeItems -= AssociatedObject_RequestTreeItems;
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}
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}
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}

‎CellMergeDemo_2015.csproj‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{B294434E-F6E8-4DDC-911C-8175CEF9D483}</ProjectGuid>
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<OutputType>WinExe</OutputType>
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<AppDesignerFolder>Properties</AppDesignerFolder>
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<RootNamespace>CellMerge</RootNamespace>
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<AssemblyName>CellMerge</AssemblyName>
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<TargetFrameworkVersion>v4.6</TargetFrameworkVersion>
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<FileAlignment>512</FileAlignment>
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<ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
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<WarningLevel>4</WarningLevel>
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<TargetFrameworkProfile />
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="Syncfusion.Data.WPF">
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<SpecificVersion>False</SpecificVersion>
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</Reference>
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<Reference Include="Syncfusion.SampleLayout">
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<SpecificVersion>False</SpecificVersion>
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</Reference>
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<Reference Include="Syncfusion.SfGrid.WPF">
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<SpecificVersion>False</SpecificVersion>
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</Reference>
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<Reference Include="Syncfusion.Shared.Wpf">
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<SpecificVersion>False</SpecificVersion>
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</Reference>
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<Reference Include="Syncfusion.Linq.Base">
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<SpecificVersion>False</SpecificVersion>
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</Reference>
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<Reference Include="Syncfusion.Tools.WPF">
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<SpecificVersion>False</SpecificVersion>
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</Reference>
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<Reference Include="Syncfusion.Grid.Wpf">
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<SpecificVersion>False</SpecificVersion>
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</Reference>
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<Reference Include="Syncfusion.GridCommon.Wpf">
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<SpecificVersion>False</SpecificVersion>
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</Reference>
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<Reference Include="System" />
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<Reference Include="System.Data" />
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<Reference Include="System.Windows.Interactivity">
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<HintPath>..\..\..\..\..\Common\Data\Interactivity_Binaries\WPF\4.0\System.Windows.Interactivity.dll</HintPath>
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</Reference>
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<Reference Include="System.Xml" />
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<Reference Include="Microsoft.CSharp" />
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<Reference Include="System.Core" />
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<Reference Include="System.Xml.Linq" />
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<Reference Include="System.Data.DataSetExtensions" />
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<Reference Include="System.Xaml">
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<RequiredTargetFramework>4.0</RequiredTargetFramework>
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</Reference>
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<Reference Include="WindowsBase" />
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<Reference Include="PresentationCore" />
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<Reference Include="PresentationFramework" />
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</ItemGroup>
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<ItemGroup>
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<ApplicationDefinition Include="App.xaml">
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<Generator>MSBuild:Compile</Generator>
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<SubType>Designer</SubType>
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</ApplicationDefinition>
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<Compile Include="Behaviors\QueryCoveredRangeBehavior.cs" />
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<Compile Include="Behaviors\RequestTreeItemsBehavior.cs" />
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<Compile Include="Helper\Converters.cs" />
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<Compile Include="Helper\SfTreeGridBehavior.cs" />
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<Compile Include="Model\EmployeeInfo.cs" />
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<Compile Include="ViewModel\ViewModel.cs" />
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<Page Include="MainWindow.xaml">
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<Generator>MSBuild:Compile</Generator>
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<SubType>Designer</SubType>
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</Page>
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<Compile Include="App.xaml.cs">
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<DependentUpon>App.xaml</DependentUpon>
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<SubType>Code</SubType>
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</Compile>
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<Compile Include="MainWindow.xaml.cs">
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<DependentUpon>MainWindow.xaml</DependentUpon>
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<SubType>Code</SubType>
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</Compile>
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</ItemGroup>
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<ItemGroup>
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<Compile Include="Properties\AssemblyInfo.cs">
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<SubType>Code</SubType>
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</Compile>
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<Compile Include="Properties\Resources.Designer.cs">
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<AutoGen>True</AutoGen>
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<DesignTime>True</DesignTime>
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<DependentUpon>Resources.resx</DependentUpon>
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</Compile>
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<Compile Include="Properties\Settings.Designer.cs">
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<AutoGen>True</AutoGen>
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<DependentUpon>Settings.settings</DependentUpon>
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<DesignTimeSharedInput>True</DesignTimeSharedInput>
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</Compile>
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<EmbeddedResource Include="Properties\Resources.resx">
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<Generator>ResXFileCodeGenerator</Generator>
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<LastGenOutput>Resources.Designer.cs</LastGenOutput>
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</EmbeddedResource>
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<None Include="Properties\Settings.settings">
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<Generator>SettingsSingleFileGenerator</Generator>
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<LastGenOutput>Settings.Designer.cs</LastGenOutput>
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</None>
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<AppDesigner Include="Properties\" />
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</ItemGroup>
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<ItemGroup>
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<Resource Include="App.ico" />
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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<ItemGroup>
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<Reference Include="Syncfusion.Licensing" />
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</ItemGroup>
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<!-- To modify your build process, add your task inside one of the targets below and uncomment it.
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Other similar extension points exist, see Microsoft.Common.targets.
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<Target Name="BeforeBuild">
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</Target>
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<Target Name="AfterBuild">
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</Target>
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-->
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</Project>

‎CellMergeDemo_2015.sln‎

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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio 14
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VisualStudioVersion = 14.0.25420.1
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "CellMergeDemo_2015", "CellMergeDemo_2015.csproj", "{B294434E-F6E8-4DDC-911C-8175CEF9D483}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{B294434E-F6E8-4DDC-911C-8175CEF9D483}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{B294434E-F6E8-4DDC-911C-8175CEF9D483}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{B294434E-F6E8-4DDC-911C-8175CEF9D483}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{B294434E-F6E8-4DDC-911C-8175CEF9D483}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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EndGlobal

‎Helper/Converters.cs‎

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#region Copyright Syncfusion Inc. 2001-2019.
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// Copyright Syncfusion Inc. 2001-2019. All rights reserved.
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// Use of this code is subject to the terms of our license.
4+
// A copy of the current license can be obtained at any time by e-mailing
5+
// licensing@syncfusion.com. Any infringement will be prosecuted under
6+
// applicable laws.
7+
#endregion
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using Syncfusion.UI.Xaml.Grid;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Data;
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namespace Merging
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{
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internal class EditTriggerOptionConverter : IValueConverter
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{
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public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
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{
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int? index = value as int?;
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if (index == 0)
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return EditTrigger.OnTap;
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else
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return EditTrigger.OnDoubleTap;
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}
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public object ConvertBack(object value, Type targetType, object parameter,
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System.Globalization.CultureInfo culture)
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{
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throw new NotImplementedException();
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}
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}
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internal class CurrencyFormatConverter : IValueConverter
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{
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public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
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{
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return String.Format("{0:C}", value);
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}
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public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
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{
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throw new NotImplementedException();
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}
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}
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}

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