Populate treeview with user created tables, and their columns

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C#

.NET

I am learning C# and .NET on my own. I am trying to learn how to use GetSchema[^].

What I am trying to do is this:

Open MS Access database and populate treeview control with database schema. I want to populate parent nodes with user created table names, and their child nodes will contain column names.

I have tried to adapt the code example I linked to above but have failed.

Here is the code:

using (OleDbConnection OleDBConnection = new OleDbConnection())
{
    OleDBConnection.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;" + 
        "Data Source=" + databaseLocation + ";Persist Security Info=False;";

    try
    {
        OleDBConnection.Open();
        // get database schema
        DataTable dataTable = OleDBConnection.GetSchema("Tables");
        // clear the treeview
        TreeView.Nodes.Clear();
        // here I tried to populate the treeview but have failed
        foreach (System.Data.DataRow row in dataTable.Rows)
        {
            // add parent node -> table name
            TreeView.Nodes.Add(row["TABLE_NAME"].ToString());
            // now add children -> all table columns
            foreach(DataColumn column in dataTable.Columns)
            {
                TreeView.Nodes.Add(column.ColumnName);
            }
        }
        // all done, close the connection
        OleDBConnection.Close();
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
        Application.Exit();
    }
}

The result I get, when testing on Northwind database, is the following:

- Customers
    - TABLE_CATALOG
    - TABLE_SCHEMA
    - TABLE_NAME
    - TABLE_TYPE
    - TABLE_GUID
    - DESCRIPTION
    - TABLE_PROPID
    - DATE_CREATED
    - DATE_MODIFIED
- Employees
    - TABLE_CATALOG
    - TABLE_SCHEMA
    - TABLE_NAME
    - TABLE_TYPE
    - TABLE_GUID
    - DESCRIPTION
    - TABLE_PROPID
    - DATE_CREATED
    - DATE_MODIFIED 
...

The problem with the above result is that it also includes non-user created tables as parent nodes, and I do not get column names from those tables ( instead, I get TABLE_CATALOG and so on for every table).

QUESTION:

How can I load user created tables as parent nodes, and add child nodes that hold those tables column names?

Again, I apologize if the solution is trivial, but bare in mind that this was my first attempt since I am just beginning with C# and .NET