Focusing on newly created node in treeview in c#.

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Actually i was trying it using treeview.select() or treeview.Focus() command.
but using this cursor focusing on by default first node in treeview.
but i want to focus on newly created node in treeview.

Posted 18-Dec-13 18:58pm

Gauri Bharde

Updated 30-Mar-21 5:44am

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3 solutions

Solution 1

You use the selected node property of the treeview, for example if your treeview is called treeView1:

C#

treeView1.SelectedNode = treeNode;

You can also call treeNode.EnsureVisible() to make sure that the node is visible in the treeview.

Edit:

Here is your revised solution using the code from your comment:

C#

TreeNode newNode = treeViewDept.Nodes.Add(textBoxNewParent.Text);
btnSave.Enabled = true;
treeViewDept.SelectedNode = newNode;
newNode.EnsureVisible();

Notice how I save the new node when it is created? This is so it can be referenced again later when I set the SelectedNode and use EnsureVisible.

Posted 18-Dec-13 19:02pm

Ron Beyer

Updated 19-Dec-13 3:56am

v2

Comments

Gauri Bharde 19-Dec-13 1:23am

treeViewDept.Nodes.Add(textBoxNewParent.Text);
btnSave.Enabled = true;
btnSave.Focus();
treeViewDept.Focus();

actually this is my code.I want to create new node through textbox.
when click on create new node button,new node added into treeview.but i want to focus on that node bydefault without selecting that node.
i am trying to treeview1.selectednode= textBoxNewParent.Text;
but there is error occurs.how to solve this problem?

Ron Beyer 19-Dec-13 9:57am

I've updated my answer to include your code, modified to work.

Solution 3

Consider

MyTreeView.Select()

Reason:
When a button is clicked, the TreeView loss focus since the user clicked elsewhere.
When the treeview is not in focus, the highlighted item is not seen.
It can be mistaken as no item is selected, or "the selected node is lost".
Putting the TreeView back in focus restores the highlight.
This can be done in the button's click event handler.
So after clicking the button, the focus to the treeview is restored programatically.

Posted 30-Mar-21 5:44am

Member 15127134

Updated 30-Mar-21 5:47am

v4

Comments

Tony Hill 30-Mar-21 11:55am

Only 7 years late with an answer which does not answer the OP's question, the OP actually wants to focus (highlight) a newly created node in the treeview not focus a control.

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BillWoodruff · Accepted Answer · 2013-12-18T21:31:00

To focus on the TreeView and hide any selection while visually indicating to the user that a TreeNode has just been created try something like this:

private TreeNode tempTreeNode;

private Color nodeBaseColor = Color.White;
private Color justCreatedNodeColor = Color.Yellow;

private void btnMakeNewTreeNode_Click(object sender, EventArgs e)
{
    // reset the background color of the last created node
    if (tempTreeNode != null) tempTreeNode.BackColor = nodeBaseColor;

    // create the new node, add it to the TreeView
    // set its background color
    tempTreeNode = new TreeNode(textBox1.Text);
    treeView1.Nodes.Add(tempTreeNode);
    tempTreeNode.BackColor = justCreatedColor;

    // focus on the TreeView, select the new node
    // then nullify the selection
    treeView1.Focus();
    treeView1.SelectedNode = tempTreeNode;
    treeView1.SelectedNode = null;
}