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I have a ContextMenuStrip setup with two ToolStripItem s. The second ToolStripItem has two additional nested ToolStripItem s. I define this as: ContextMenuStrip cms = new ContextMenuStrip(); ToolStripMenuItem contextJumpTo = new ToolStripMenuItem(); ToolStripMenuItem contextJumpToHeatmap = new ToolStripMenuItem(); ToolStripMenuItem contextJumpToHeatmapStart = new ToolStripMenuItem(); ToolStripMenuItem contextJumpToHeatmapLast = new ToolStripMenuItem(); cms.Items.AddRange(new ToolStripItem[] { contextJumpTo, contextJumpToHeatmap}); cms.Size = new System.Drawing.Size(176, 148); contextJumpTo.Size = new System.Drawing.Size(175, 22); contextJumpTo.Text = "Jump To (No Heatmapping)"; contextJumpToHeatmap.Size = new System.Drawing.Size(175, 22); contextJumpToHeatmap.Text = "Jump To (With Heatmapping)"; contextJumpToHeatmap.DropDownItems.AddRange(new ToolStripItem[] { contextJumpToHeatmapStart, contextJumpToHeatmapLast }); contextJumpToHeatmapStart.Size = new System.Drawing.Size(165, 22); contextJumpToHeatmapStart.Text = "From Start of File"; contextJumpToHeatmapLast.Size = new System.Drawing.Size(165, 22); contextJumpToHeatmapLast.Text = "From Last Data Point"; I then setup an event listener for the click events of the three ToolStripMenuItem s that I want to respond to. Here are the methods (I only listed two of the three methods): void contextJumpTo_Click(object sender, EventArgs e) { // Try to cast the sender to a ToolStripItem ToolStripMenuItem menuItem = sender as ToolStripMenuItem; if (menuItem != null) { // Retrieve the ContextMenuStrip that owns this ToolStripItem ContextMenuStrip owner = menuItem.Owner as ContextMenuStrip; if (owner != null) { // Get the control that is displa

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