Added new kb article grid-copy-text-clipboard (#3290)

* Added new kb article grid-copy-text-clipboard

* chore(kb): apply changes as per suggestions

---------

Co-authored-by: KB Bot <kb-bot@telerik.com>
Co-authored-by: Hristian Stefanov <Hristian.Stefanov@progress.com>

Author: 3 people

knowledge-base/grid-copy-text-clipboard.md

@@ -0,0 +1,143 @@
+---
+title: Copy Text from Grid Row to Clipboard
+description: Learn how to add a right-click context menu option to copy text from a Grid to the clipboard and paste it into the Editor.
+type: how-to
+page_title: How to Copy Text from Grid to Clipboard and Paste into UI for Blazor Editor
+meta_title: How to Copy Text from Grid to Clipboard and Paste into UI for Blazor Editor
+slug: grid-kb-copy-text-clipboard
+tags: blazor, clipboard, context-menu, copy-text, grid
+res_type: kb
+ticketid: 1695036
+---
+
+## Environment
+
+<table>
+    <tbody>
+        <tr>
+            <td>Product</td>
+            <td>Grid for Blazor</td>
+        </tr>
+    </tbody>
+</table>
+
+## Description
+
+I want to add a right-click context menu to a Grid, which allows copying text from the Grid to the clipboard. The copied text can then be pasted into an Editor or anywhere else.
+
+## Solution
+
+To achieve this, implement a context menu for the Grid and include a "Copy to Clipboard" option. Follow these steps:
+
+1. Define the context menu and its items.
+2. Handle the right-click event to show the context menu.
+3. Implement the logic to copy the selected row's text to the clipboard by using the [navigator clipboard API](https://developer.mozilla.org/en-US/docs/Web/API/Navigator/clipboard).
+
+````Razor
+@using System.Collections.Generic
+@using System.Collections.ObjectModel
+@inject IJSRuntime JS
+
+<TelerikTextBox @bind-Value="@TheEditorValue" Placeholder="Paste text here.." Width="300px"></TelerikTextBox>
+<br/>
+<br/>
+<TelerikContextMenu @ref="@ContextMenuRef" Data="@MenuItems"
+                    OnClick="@((MenuItem item) => ContextMenuClickHandler(item))">
+</TelerikContextMenu>
+
+<TelerikGrid Data="@GridData" @ref="@GridRef"
+             Pageable="true"
+             OnRowContextMenu="@OnContextMenu">
+    <GridColumns>
+        <GridColumn Field=@nameof(SampleData.ID) />
+        <GridColumn Field=@nameof(SampleData.Name) />
+    </GridColumns>
+</TelerikGrid>
+
+@code {
+    private string TheEditorValue { get; set; }
+    private ObservableCollection<SampleData> GridData { get; set; }
+    private List<MenuItem> MenuItems { get; set; }
+    private SampleData SelectedPerson { get; set; }
+    private TelerikContextMenu<MenuItem> ContextMenuRef { get; set; }
+    private TelerikGrid<SampleData> GridRef { get; set; }
+
+    private async Task OnContextMenu(GridRowClickEventArgs args)
+    {
+        SelectedPerson = args.Item as SampleData;
+
+        if (args.EventArgs is MouseEventArgs mouseEventArgs)
+        {
+            await ContextMenuRef.ShowAsync(mouseEventArgs.ClientX, mouseEventArgs.ClientY);
+        }
+    }
+
+    private async Task ContextMenuClickHandler(MenuItem item)
+    {
+        if (item.Action != null)
+        {
+            item.Action.Invoke();
+        }
+        else if (item.CommandName == "CopyRow" && SelectedPerson != null)
+        {
+            string rowText = $"ID: {SelectedPerson.ID}, Name: {SelectedPerson.Name}";
+            await CopyToClipboard(rowText);
+        }
+
+        SelectedPerson = null;
+    }
+
+    private async Task CopyToClipboard(string text)
+    {
+        await JS.InvokeVoidAsync("navigator.clipboard.writeText", text);
+    }
+
+    protected override void OnInitialized()
+    {
+        MenuItems = new List<MenuItem>()
+        {
+            new MenuItem(){ Text = "Copy Row Text", Icon = SvgIcon.Copy, CommandName="CopyRow" },
+            new MenuItem(){ Text = "Delete", Icon = SvgIcon.Trash, Action = DeleteItem }
+        };
+
+        GridData = new ObservableCollection<SampleData>();
+        for (int i = 1; i <= 20; i++)
+        {
+            GridData.Add(new SampleData()
+            {
+                ID = i,
+                Name = $"Employee {i}"
+            });
+        }
+    }
+
+    private void DeleteItem()
+    {
+        if (SelectedPerson != null)
+        {
+            GridData.Remove(SelectedPerson);
+        }
+    }
+
+    public class MenuItem
+    {
+        public string Text { get; set; }
+        public ISvgIcon Icon { get; set; }
+        public Action Action { get; set; }
+        public string CommandName { get; set; }
+    }
+
+    public class SampleData
+    {
+        public int ID { get; set; }
+        public string Name { get; set; }
+    }
+}
+````
+
+## See Also
+
+* [Grid Overview](slug:grid-overview)
+* [Context Menu Overview](slug:contextmenu-overview)
+* [Grid Context Menu Integration Demo](https://demos.telerik.com/blazor-ui/contextmenu/integration)
+* [Grid Context Menu Integration Documentation](slug:contextmenu-integration)