WebGrid SelfReference LoadOnDemand can remove the (+) sign if the row contains no child row to be expanded.

In this topic, you will learn how to remove the (+) mark on self reference load on demand in WebGrid.

To Remove (+) sign in Self Reference LoadOnDemand rows in WebGrid

Drag and drop a WebGrid to your form.
Drag and drop ISDatasource and specify Self Reference LoadOnDemand in WebGrid.
In InitializeRow event at the server side, use e.Row.SelfRefChildNotExpandable = true; code to remove the + button.

Copy Code

private void WebGrid1_InitializeRow(object sender, ISNet.WebUI.WebGrid.RowEventArgs e)
{
        OleDbCommand comm = new OleDbCommand("select * from employees where reportsto = " + e.Row.KeyValue.ToString(),oleDbConnection1);
        oleDbConnection1.Open();
        OleDbDataReader dtr = comm.ExecuteReader();

        if(!dtr.HasRows)
                e.Row.SelfRefChildNotExpandable = true;

        oleDbConnection1.Close();                       
}

Intersoft WebGrid Documentation
How-to: Remove (+) sign for Self Reference LoadOnDemand rows that contain no Child Row
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To Remove (+) sign in Self Reference LoadOnDemand rows in WebGrid

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