C# How do you disable checkboxes?

If you type a word on the "txtProdBarcode" section, the lists will come at the bottom like the picture. The list sections name is "lvBase"

Then when you type a word on the "searchText" section, the checkboxes on the "lvBase" section shouldn't be clicked.

I've tried my best but can't get the answer.

private void txtProdBarcode_TextChanged(object sender, EventArgs e)
    {
        string searchText = txtProdBarcode.Text.ToUpper().Trim();
        if (searchText.Length > 0)
        {                  
            lvBase.CheckBoxes = false;

        }
        else
        {
            lvBase.CheckBoxes = true;
        }

This code deletes the checkboxes on the "lvBase" section. But it's not what I want.

Can you guys help me to solve this problem?