how to change backcolor of TreeView node which is found using C# in Windows Form Application

Hi siddangoud,

I have modified your code.

C#

public partial class Form1 : Form
{
    Boolean found;
    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        TreeNode oMainNode = treeView1.Nodes[0];
        ClearBackColor(oMainNode);
        PrintNodesRecursive(oMainNode);
    }

    public TreeNode previousSelectedNode = null;
    public void PrintNodesRecursive(TreeNode oParentNode)
    {
        foreach (TreeNode oSubNode in oParentNode.Nodes)
        {
            if (oSubNode.Text == textBox1.Text)
            {
                found = true;
                oSubNode.BackColor = Color.Red;
            }
            else
            {
                PrintNodesRecursive1(oSubNode);
            }
        }

        if (found == true)
        {
            MessageBox.Show("node found");
        }
        else
        {
            MessageBox.Show("NODE NOT found");
        }

    }

    public void PrintNodesRecursive1(TreeNode oParentNode)
    {
        foreach (TreeNode oSubNode in oParentNode.Nodes)
        {

            if (oSubNode.Text == textBox1.Text)
            {
                oSubNode.BackColor = Color.Aqua;
                found = true;
            }
        }
    }

    private void ClearBackColor(TreeNode oParentNode)
    {
        foreach (TreeNode oSubNode in oParentNode.Nodes)
        {
            oSubNode.BackColor = Color.White;
            ClearRecursive(oSubNode);
        }
    }

    private void ClearRecursive(TreeNode oParentNode)
    {
        foreach (TreeNode oSubNode in oParentNode.Nodes)
        {
            oSubNode.BackColor = Color.White;
            ClearRecursive(oSubNode);
        }
    }

    private void treeView1_BeforeExpand(object sender, TreeViewCancelEventArgs e)
    {
        TreeNode oMainNode = treeView1.Nodes[0];
        ClearBackColor(oMainNode);
    }
}

Screenshot