Right click to select a row in a Datagridview and show a menu to delete it

Question

I have few columns in my DataGridView, and there is data in my rows. I saw few solutions in here, but I can not combine them!

Simply a way to right-click on a row, i

Answer 1

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
    if(e.Button == MouseButtons.Right)
    {
        MyDataGridView.ClearSelection();
        MyDataGridView.Rows[e.RowIndex].Selected = true;
    }
}

private void DeleteRow_Click(object sender, EventArgs e)
{
    Int32 rowToDelete = MyrDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
    MyDataGridView.Rows.RemoveAt(rowToDelete);
    MyDataGridView.ClearSelection();
}

Answer 2

You can also make this a little simpler by using the following inside the event code:

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e) 
{     
    if (e.Button == MouseButtons.Right)     
    {         
        rowToDelete = e.RowIndex;
        MyDataGridView.Rows.RemoveAt(rowToDelete);         
        MyDataGridView.ClearSelection();     
    } 
}

Answer 3

See here it can be done using the DataGridView RowTemplate property.

Note: This code isn't tested but I've used this method before.

// Create DataGridView
DataGridView gridView = new DataGridView();
gridView.AutoGenerateColumns = false;
gridView.Columns.Add("Col", "Col");

// Create ContextMenu and set event
ContextMenuStrip cMenu = new ContextMenuStrip();
ToolStripItem mItem = cMenu.Items.Add("Delete");
mItem.Click += (o, e) => { /* Do Something */ };           

// This makes all rows added to the datagridview use the same context menu
DataGridViewRow defaultRow = new DataGridViewRow();
defaultRow.ContextMenuStrip = cMenu;

And there you go, as easy as that!

Answer 4

It is work for me without any errors:

this.dataGridView2.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown); 
this.dataGridView2.Click += new System.EventHandler(this.DeleteRow_Click);

And this

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Right)
    {
        var hti = dataGridView2.HitTest(e.X, e.Y);
        dataGridView2.ClearSelection();
        dataGridView2.Rows[hti.RowIndex].Selected = true;
    }

}


private void DeleteRow_Click(object sender, EventArgs e)
{
    Int32 rowToDelete = dataGridView2.Rows.GetFirstRow(DataGridViewElementStates.Selected);
    if (rowToDelete == -1) { }
    else 
    {
        dataGridView2.Rows.RemoveAt(rowToDelete);
        dataGridView2.ClearSelection();
    }
}

Answer 5

private void dataGridView1_CellContextMenuStripNeeded(object sender, 
DataGridViewCellContextMenuStripNeededEventArgs e)
{            
    if (e.RowIndex != -1)
    {
        dataGridView1.ClearSelection();
        this.dataGridView1.Rows[e.RowIndex].Selected = true;
        e.ContextMenuStrip = contextMenuStrip1;
    }
}

Answer 6

I finally solved it:

• In Visual Studio, create a ContextMenuStrip with an item called "DeleteRow"

• Then at the DataGridView link the ContextMenuStrip

Using the code below helped me getting it work.

this.MyDataGridView.MouseDown += new System.Windows.Forms.MouseEventHandler(this.MyDataGridView_MouseDown);
this.DeleteRow.Click += new System.EventHandler(this.DeleteRow_Click);

Here is the cool part

private void MyDataGridView_MouseDown(object sender, MouseEventArgs e)
{
    if(e.Button == MouseButtons.Right)
    {
        var hti = MyDataGridView.HitTest(e.X, e.Y);
        MyDataGridView.ClearSelection();
        MyDataGridView.Rows[hti.RowIndex].Selected = true;
    }
}

private void DeleteRow_Click(object sender, EventArgs e)
{
    Int32 rowToDelete = MyDataGridView.Rows.GetFirstRow(DataGridViewElementStates.Selected);
    MyDataGridView.Rows.RemoveAt(rowToDelete);
    MyDataGridView.ClearSelection();
}