C#

private void DoWork()
{
  // your old selectionchanged code here
}

private void dataGridView1_SelectionChanged (object sender, EventArgs e)
{
  DoWork(); 
}

private void dataGridView1_RowContextMenuStripNeeded (object sender, DataGridViewRowContextMenuStripNeededEventArgs e)
{
  DoWork();
}

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

 private void dataGridView1_RowContextMenuStripNeeded (object sender, DataGridViewRowContextMenuStripNeededEventArgs e)
        {
            e.ContextMenuStrip = contextMenuStrip1; <--- here: The object reference has not been set to the instance of the object
            selectedrowindex = e.RowIndex;

        }

 private void dataGridView1_SelectionChanged (object sender, EventArgs e, DataGridViewRowContextMenuStripNeededEventArgs ee)
            {
               dataGridView1_RowContextMenuStripNeeded (sender, ee);
            }

Member 10975497 wrote:

how to make it fit?

Member 10975497 wrote:

I also tried this:

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

Trying the menustrip-thing as a parameter in the DoWork method Smile | :)

private ContextMenuStrip contextMenuStrip1;

public Form1()
{
    InitializeComponent();
    dataGridView1.RowContextMenuStripNeeded += dataGridView1_RowContextMenuStripNeeded;
    dataGridView1.SelectionChanged += dataGridView1_SelectionChanged;

    contextMenuStrip1 = new ContextMenuStrip();
    contextMenuStrip1.Items.Add("The turtle moves.");
}

void dataGridView1_SelectionChanged(object sender, EventArgs e)
{
    DoMyBidding(null);
}

void dataGridView1_RowContextMenuStripNeeded(object sender, DataGridViewRowContextMenuStripNeededEventArgs e)
{
    e.ContextMenuStrip = contextMenuStrip1;
    int selectedrowindex = e.RowIndex; // why not dataGridView1.SelectedRows[0].Index?

    DoMyBidding(e.ContextMenuStrip);
}

void DoMyBidding(ContextMenuStrip humbly)
{
    // do whatever you normally do?
}

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]
"If you just follow the bacon Eddy, wherever it leads you, then you won't have to think about politics." -- Some Bell.

Member 14089822 wrote:

Give me the source code of this project.

Member 14089822 wrote:

Give me the source code of this project.

public static Guid GetUniqueAppId()
{
    var company = CoreServices.AssemblyCompany;
    var product = CoreServices.AssemblyProduct;
    var identifier = string.IsNullOrEmpty(company)
        ? $@"SOFTWARE\{product}"
        : $@"SOFTWARE\{company}\{product}";
    using (var key = Registry.CurrentUser.CreateSubKey(identifier))
    {
        var ID = "InstallId";
        var value = key.GetValue(ID) as string;
        if (string.IsNullOrWhiteSpace(value) || !Guid.TryParse(value, out var result))
        {
            result = Guid.NewGuid();
            key.SetValue(ID, result.ToString());
        }
        return result;
    }
}

OriginalGriff wrote:

How do you expect us to be able to help you when we have no idea what you project does, how it does it, or even what it does when it doesn't work?

M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpful answers is nice, but saying thanks can be even nicer.