Answer to Question #44003 in C# for Shihab Shahriar Hazari

Question #44003
Hi, I want to draw more than one line in wpf in c#. I want to use array to draw the lines. How can i do it? I used the following code. I called a method named lets_draw private void lets_draw() { int i,z; z = 40; Line[] line = new Line[20]; for(i=1;i<=10;i++) { line[i].Visibility = System.Windows.Visibility.Visible; line[i].Stroke = System.Windows.Media.Brushes.Black; line[i].X1 = z; line[i].X2 = z; line[i].Y1 = 40; line[i].Y2 = 130; z += 10; theGrid.Children.Add(line[i]); } } But it showed the following message "An unhandled exception of type 'System.NullReferenceException' occurred in SkeletalTracking.exe Additional information: Object reference not set to an instance of an object."
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Expert's answer
2014-07-08T07:09:54-0400
The answer to the question is available in the PDF file https://www.assignmentexpert.com/homework-answers/programming-answer-44003.pdf

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