Windows forms treeview filtering problem

Question

Hi,
I have a textbox and treeview in C# windows form application. What i want to do is , due to the text data entered in the textbox, the treeview will automatically locate to the entered data dynamically. While i'm  typing , the treeview will refresh itself
with only the matching nodes with the criteria entered.
I couldn't find a way to do this. 
Waiting for help,
HighHopes

Answer 1

Hi HighHopes,
What's the relationship between the textBox and TreeView, is the treeview populated(databind) by some dataSource?
First, I think it's better to use ComboBox control instead of TextBox to select and enter text, and then highlight the node in TreeView if its text the same with the node's text.
private void comboBox1_TextChanged(object sender, EventArgs e)
for (int i = 0; i < treeView1.Nodes.Count; i++)
treeView1.Nodes[i].ForeColor = Color.Black;
for (int k = 0; k < treeView1.Nodes[i].Nodes.Count; k++)
treeView1.Nodes[i].Nodes[k].ForeColor = Color.Black;
if (comboBox1.Text == "") return;
if (comboBox1.Text.Length <= 2) return;
for (int i = 0; i < treeView1.Nodes.Count; i++)
if (treeView1.Nodes[i].Text.IndexOf(comboBox1.Text) >= 0)
treeView1.Nodes[i].ForeColor = Color.Blue;
break;
for (int k = 0; k < treeView1.Nodes[i].Nodes.Count; k++)
if (treeView1.Nodes[i].Nodes[k].Text.IndexOf(comboBox1.Text) >= 0)
treeView1.Nodes[i].Nodes[k].ForeColor = Color.Blue;
break;
Helen Zhou [MSFT]
MSDN Community Support | Feedback to us
Get or Request Code Sample from Microsoft
Please remember to mark the replies as answers if they help and unmark them if they provide no help.