How do I find what was clicked on in a contexmenu

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I am using a context menu on a datagridview form. I am trying to find what item was clicked on in the context menu.

What I have tried:

C#

using WinForms = System.Windows.Forms;

private void dgvExcel_MouseDown(object sender, WinForms.MouseEventArgs e)
{
    // Define the context menu
    WinForms.ContextMenu EditMenu = new WinForms.ContextMenu();
    if (e.Button == WinForms.MouseButtons.Right)
    {
        // There was a right-click on a cell, so add the items to the list
        EditMenu.MenuItems.Add(new WinForms.MenuItem("Edit"));
        EditMenu.MenuItems.Add(new WinForms.MenuItem("Copy"));
        EditMenu.MenuItems.Add(new WinForms.MenuItem("Delete"));

        // A cell received a right click, so show the context menu
        EditMenu.Show(dgvExcel, new System.Drawing.Point(e.X, e.Y));
    }
    //I have tried
    if (WinForms.MenuItem.Equals("Edit"))
    if (WinForms.MenuItem.Equals(0))
    if (EditMenu.Equals(0)
}

Posted 26-Jul-23 4:13am

PaulaJoannAllen

Updated 26-Jul-23 4:46am

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Member 15627495 26-Jul-23 10:31am

Hi,

- check type of sender , if it is datagrid
- create a 'temp' obj of type datagrid ( to use all features of datagrid, the var is a copy of the one datagrid. use a cast to convert 'sender' to datagrid Type.
- get the index of rows / columns / or cell ..
- pick the value

2 solutions

Solution 2

This is a Microsoft example: DataGridViewRow.ContextMenuStrip Property (System.Windows.Forms) | Microsoft Learn[^]

Create a new project, drop a DataGridView control on a form, then add the following code:

C#

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        InitData();
    }

    public List<Person> People { get; set; } = new List<Person>
    {
        new Person { Age = 21, FirstName = "Paul", LastName = "McCartney" },
        new Person { Age = 22, FirstName = "John", LastName = "Lennon" },
        new Person { Age = 23, FirstName = "George", LastName = "Harrison" },
        new Person { Age = 24, FirstName = "Ringo", LastName = "Starr" },
    };

    private void InitData()
    {
        dataGridView1.MultiSelect = false;
        dataGridView1.DataSource = People;
        dataGridView1.Rows[0].Cells[0].Selected = true;

        AddContextMenu();
        dataGridView1.CellMouseEnter += dataGridView_CellMouseEnter;
    }

    ToolStripMenuItem toolStripItem1 = new ToolStripMenuItem();

    private void AddContextMenu()
    {
        toolStripItem1.Text = "Redden";
        toolStripItem1.Click += new EventHandler(toolStripItem1_Click);
        ContextMenuStrip strip = new ContextMenuStrip();
        foreach (DataGridViewColumn column in dataGridView1.Columns)
        {

            column.ContextMenuStrip = strip;
            column.ContextMenuStrip.Items.Add(toolStripItem1);
        }
    }

    private DataGridViewCellEventArgs mouseLocation;

// Change the cell's color.
    private void toolStripItem1_Click(object sender, EventArgs args)
    {
        dataGridView1.Rows[mouseLocation.RowIndex]
                .Cells[mouseLocation.ColumnIndex].Style.BackColor
            = Color.Red;
    }

// Deal with hovering over a cell.
    private void dataGridView_CellMouseEnter(object sender,
        DataGridViewCellEventArgs location)
    {
        mouseLocation = location;
    }
}

public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public int Age { get; set; }
}

Now run and right-click on any cell. A context menu is shown and you can select the item and the click event is captured.

Posted 26-Jul-23 4:46am

Graeme_Grant

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OriginalGriff · Accepted Answer · 2023-07-26T04:35:00

Add event handlers:

C#

private void MyDataGridView_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
    {
    ContextMenu EditMenu = new ContextMenu();
    if (e.Button == MouseButtons.Right)
        {
        // There was a right-click on a cell, so add the items to the list
        EditMenu.MenuItems.Add(new MenuItem("Edit", Edit_Click));
        EditMenu.MenuItems.Add(new MenuItem("Copy", Copy_Click));
        EditMenu.MenuItems.Add(new MenuItem("Delete", Delete_Click));

        // A cell received a right click, so show the context menu
        EditMenu.Show(MyDataGridView, new System.Drawing.Point(e.X, e.Y));
        }

    }
private void Edit_Click(object sender, EventArgs e)
    {
    Debug.WriteLine("Edit");
    }
private void Copy_Click(object sender, EventArgs e)
    {
    Debug.WriteLine("Copy");
    }
private void Delete_Click(object sender, EventArgs e)
    {
    Debug.WriteLine("Delete");
    }