Merge pull request #1 from Backiaraj/DataGrid

Added sample for WPF DataGrid control

Author: syncsiva

How-to-achieve-the-editorselectionbehaviour-as-selectall-in-gridtemplatecolumn-in-wpf-datagrid/README.md

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+# How to achieve the EditorSelectionBehaviour as SelectAll in GridTemplateColumn in WPF DataGrid (SfDataGrid)?
+
+This sample show cases how to achieve the EditorSelectionBehavior as SelectAll in [GridTemplateColumn](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.Grid.GridTemplateColumn.html) in [WPF DataGrid](https://www.syncfusion.com/wpf-ui-controls/datagrid) (SfDataGrid).
+
+The [EditorSelectionBehavior](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.Grid.EditorSelectionBehavior.html) as [SelectAll](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.Grid.SfDataGrid.html#Syncfusion_UI_Xaml_Grid_SfDataGrid_SelectAll_System_Boolean_) will not work when the [GridTemplateColumn](https://help.syncfusion.com/cr/wpf/Syncfusion.UI.Xaml.Grid.GridTemplateColumn.html) is in edit mode in [WPF DataGrid](https://www.syncfusion.com/wpf-ui-controls/datagrid) (SfDataGrid). Because, the element loaded inside the edit template cannot be predicted. You can achieve this by programmatically selecting all the text whenever the edit element got focus.

How-to-achieve-the-editorselectionbehaviour-as-selectall-in-gridtemplatecolumn-in-wpf-datagrid/UWP/SfDataGridDemo/SfDataGridDemo/App.xaml

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+<Application
+    x:Class="SfDataGridDemo.App"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:SfDataGridDemo"
+    RequestedTheme="Light">
+
+</Application>

How-to-achieve-the-editorselectionbehaviour-as-selectall-in-gridtemplatecolumn-in-wpf-datagrid/UWP/SfDataGridDemo/SfDataGridDemo/App.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+using Windows.ApplicationModel;
+using Windows.ApplicationModel.Activation;
+using Windows.Foundation;
+using Windows.Foundation.Collections;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Controls.Primitives;
+using Windows.UI.Xaml.Data;
+using Windows.UI.Xaml.Input;
+using Windows.UI.Xaml.Media;
+using Windows.UI.Xaml.Navigation;
+
+namespace SfDataGridDemo
+{
+    /// <summary>
+    /// Provides application-specific behavior to supplement the default Application class.
+    /// </summary>
+    sealed partial class App : Application
+    {
+        /// <summary>
+        /// Initializes the singleton application object.  This is the first line of authored code
+        /// executed, and as such is the logical equivalent of main() or WinMain().
+        /// </summary>
+        public App()
+        {
+            this.InitializeComponent();
+            this.Suspending += OnSuspending;
+        }
+
+        /// <summary>
+        /// Invoked when the application is launched normally by the end user.  Other entry points
+        /// will be used such as when the application is launched to open a specific file.
+        /// </summary>
+        /// <param name="e">Details about the launch request and process.</param>
+        protected override void OnLaunched(LaunchActivatedEventArgs e)
+        {
+            Frame rootFrame = Window.Current.Content as Frame;
+
+            // Do not repeat app initialization when the Window already has content,
+            // just ensure that the window is active
+            if (rootFrame == null)
+            {
+                // Create a Frame to act as the navigation context and navigate to the first page
+                rootFrame = new Frame();
+
+                rootFrame.NavigationFailed += OnNavigationFailed;
+
+                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
+                {
+                    //TODO: Load state from previously suspended application
+                }
+
+                // Place the frame in the current Window
+                Window.Current.Content = rootFrame;
+            }
+
+            if (e.PrelaunchActivated == false)
+            {
+                if (rootFrame.Content == null)
+                {
+                    // When the navigation stack isn't restored navigate to the first page,
+                    // configuring the new page by passing required information as a navigation
+                    // parameter
+                    rootFrame.Navigate(typeof(MainPage), e.Arguments);
+                }
+                // Ensure the current window is active
+                Window.Current.Activate();
+            }
+        }
+
+        /// <summary>
+        /// Invoked when Navigation to a certain page fails
+        /// </summary>
+        /// <param name="sender">The Frame which failed navigation</param>
+        /// <param name="e">Details about the navigation failure</param>
+        void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
+        {
+            throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
+        }
+
+        /// <summary>
+        /// Invoked when application execution is being suspended.  Application state is saved
+        /// without knowing whether the application will be terminated or resumed with the contents
+        /// of memory still intact.
+        /// </summary>
+        /// <param name="sender">The source of the suspend request.</param>
+        /// <param name="e">Details about the suspend request.</param>
+        private void OnSuspending(object sender, SuspendingEventArgs e)
+        {
+            var deferral = e.SuspendingOperation.GetDeferral();
+            //TODO: Save application state and stop any background activity
+            deferral.Complete();
+        }
+    }
+}