public Wall CreateWallUsingCurve1(Autodesk.Revit.DB.Document document, Level level)
{
    // Build a location line for the wall creation
    XYZ start = new XYZ(0, 0, 0);
    XYZ end = new XYZ(10, 10, 0);
    Line geomLine = Line.CreateBound(start, end);

    // Create a wall using the location line
    return Wall.Create(document, geomLine, level.Id, true);
}

Public Function CreateWallUsingCurve1(document As Autodesk.Revit.DB.Document, level As Level) As Wall
    ' Build a location line for the wall creation
    Dim start As New XYZ(0, 0, 0)
    Dim [end] As New XYZ(10, 10, 0)
    Dim geomLine As Line = Line.CreateBound(start, [end])

    ' Create a wall using the location line
    Return Wall.Create(document, geomLine, level.Id, True)
End Function