R – C# WinForms – TreeView, Context Menu

Yes, it's possible, but you'll need to add some logic to your if statements that verifies the node the user clicked on is a root node.

But how do we find out if it's a root node? Well, thinking it through, we can define a root node as one that does not have any parents. So you can simply check the Parent property of the TreeNode and make sure that it is null.

Modify your code to look something like this:

if (e.Button == MouseButtons.Right)
{
    // Select the clicked node
    treeView1.SelectedNode = treeView1.GetNodeAt(e.X, e.Y);

    if (treeView1.SelectedNode != null && treeView.SelectedNode.Parent == null)
    {
        myContextMenuStrip.Show(treeView1, e.Location)
    }
}

You want to retain the check that the node itself is not null, because you don't want to show the context menu when they haven't clicked on a node, but you need to add the check for a parent, because that tells you whether or not it's a root node. The way you indicate that programmatically is using a logical AND, which is the && operator in C#.

Step 1. On your desktop right click "New"->"Text Document" with name OpenGitBash.reg

Step 2. Right click the file and choose "Edit"

Step 3. Copy-paste the code below, save and close the file

Step 4. Execute the file by double clicking it

Note: You need administrator permission to write to the registry.

Windows Registry Editor Version 5.00
; Open files
; Default Git-Bash Location C:\Program Files\Git\git-bash.exe

[HKEY_CLASSES_ROOT\*\shell\Open Git Bash]
@="Open Git Bash"
"Icon"="C:\\Program Files\\Git\\git-bash.exe"

[HKEY_CLASSES_ROOT\*\shell\Open Git Bash\command]
@="\"C:\\Program Files\\Git\\git-bash.exe\" \"--cd=%1\""

; This will make it appear when you right click ON a folder
; The "Icon" line can be removed if you don't want the icon to appear

[HKEY_CLASSES_ROOT\Directory\shell\bash]
@="Open Git Bash"
"Icon"="C:\\Program Files\\Git\\git-bash.exe"


[HKEY_CLASSES_ROOT\Directory\shell\bash\command]
@="\"C:\\Program Files\\Git\\git-bash.exe\" \"--cd=%1\""

; This will make it appear when you right click INSIDE a folder
; The "Icon" line can be removed if you don't want the icon to appear

[HKEY_CLASSES_ROOT\Directory\Background\shell\bash]
@="Open Git Bash"
"Icon"="C:\\Program Files\\Git\\git-bash.exe"

[HKEY_CLASSES_ROOT\Directory\Background\shell\bash\command]
@="\"C:\\Program Files\\Git\\git-bash.exe\" \"--cd=%v.\""

And here is your result :