How to retrive all data from firebase realtime database and display in listview in C#?

Question

I am writing code for student information system using Firebase realtime database in C#. I am using Visual Studio and installed FireSharp NuGet Package. I retrieved a data and displayed in textboxes using the code below. I want to retrieve all data from Firebase and display in listview.(like SELECT * FROM Table) Please show me how to do this.

internal class Student
{
    public string Id { get; set; }
    public string Name { get; set; }
    public string Phone { get; set; }
    public string Addr { get; set; }
}

private void btnSelect_Click(object sender, EventArgs e)
{
    var result = client.Get("StudentList/" + txtId.Text); 
    Student std = result.ResultAs<Student>();
    txtName.Text = std.Name;
    txtPhone.Text = std.Phone;
    txtAddr.Text = std.Addr;
    MessageBox.Show("data retrieved successfully");
}