TestComplete

First I created new project:

This is how my Project Explorer look like now, please notice "Stores" and "TestedApps":
Then I created my tested script like this:

function Test1()
{
  TestedApps.GridDataSetBindingSourceAndTableAdapterDynamicExample.Run();
  let form1 = Aliases.GridDataSetBindingSourceAndTableAdapterDynamicExample.Form1;
  let dataGridView = form1.dataGridView1;
  form1.btnDisplay.ClickButton();
  
  //check if field 'LastName' of first row is 'Milosev'
  let cellValue = dataGridView.wValue (0, 1).ToString().OleValue;
  if (cellValue != "Milosev")
  {
    form1.Close();
    Log.Error("Field 'LastName' of first row is not 'Milosev', it is: " + cellValue);
  }
  
  form1.btnAdd.ClickButton();
  form1.btnDisplay.ClickButton();
  
  //check if number of rows is 2
  let rowCount = dataGridView.wRowCount;
  if (rowCount != 2)
  {
    form1.Close();
    Log.Error("There are no 2 rows, there are: " + rowCount + " rows");
  }
    
  //check if field 'LastName' of second row is 'Mustermann'
  cellValue = dataGridView.wValue (1, 1);
  if (cellValue != "Mustermann")
    Log.Error("Field 'LastName' of first row is not 'Mustermann'");
  
  form1.btnDelete.ClickButton();
  form1.btnDisplay.ClickButton();
  form1.Close();
}