C#

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<br />
<br />
 DataTable dt = dataSet1.Tables["tmpItem_aux"];<br />
            DataRow newRow  = dt.NewRow();<br />
                     <br />
            newRow["itemcode"] = itemcodeTextBox.Text.ToString();<br />
            newRow["itemDesc"] = itemDescTextBox.Text.ToString();<br />
            newRow["quantity"] = quantityTextBox.Text.ToString();<br />
            newRow["unitPrice"] = unitPriceTextBox.Text.ToString();<br />
            newRow["total"] =totalTextBox.Text.ToString();<br />
            dt.Rows.Add(newRow);<br />
<br />
<br />

abstract class MyBase
{
    abstract void DoSomething();
}

class AnotherPartOfLibrary
{
    public void AnotherFunction()
    {
        //here I want to call MyBase.DoSomething()
    }
}

/* User Implementation of my library */
class UserImplementation : MyBase
{
    public void DoSomething(){}
}

x = reunionBindingSource.Position;

this.reunionBindingSource.Sort = "LastName";