C#

namespace GenericTypeTest {
  class Class1<T> { }

  abstract class BaseClass { }

  class Class2<T> : BaseClass { }

  internal class App {
    static void Main() {
      IsClass1(new Class1<int>());
      IsClass1(new Class1<string>());
      IsClass1(new Class2<string>());
      IsClass1(42);          // int
      IsClass1("Tiger");      // string


      Class2<string> strObj = new Class2<string>();
      if (strObj is BaseClass) {
        Console.WriteLine("{0} is derived from BaseClass", strObj);
      }
      Console.ReadLine();
    }

    static void IsClass1(Object obj) {
      if (GenericTypeDefinition(obj) == typeof(Class1<>)) {
        Console.WriteLine("{0} was constructed from {1}", obj.GetType(), typeof(Class1<>));
      } else {
        Console.WriteLine("{0} was NOT constructed from {1}", obj.GetType(), typeof(Class1<>));
      }
      Console.WriteLine();
    }

    static Type GenericTypeDefinition(Object obj) {
      Type result = null;
      Type test = obj.GetType();
      // Check if obj is a closed generic type      
      if (test.IsGenericType && !test.IsGenericTypeDefinition) {
        result = test.GetGenericTypeDefinition();
      }
      // null or the generic type definition
      return result;
    }
  }
}

if (insd.GetType() is Class1<IByte>) {} // throws an error if 'insd is not defined

Class1<IInt> testObject = insd as Class1<IInt>;
if (testObject != null) Console.WriteLine("it's Class1<int>");

private Point pointStart;
private Point pointEnd;
private bool drawing = false;

private void frmMain_MouseDown(object sender, MouseEventArgs e)
    {
    pointStart = e.Location;
    pointEnd = pointStart;
    drawing = true;
    Invalidate();
    }

private void frmMain_MouseUp(object sender, MouseEventArgs e)
    {
    drawing = false;
    }

private void frmMain_MouseMove(object sender, MouseEventArgs e)
    {
    if (drawing)
        {
        pointEnd = e.Location;
        Invalidate();
        }
    }

private void frmMain_Paint(object sender, PaintEventArgs e)
    {
    e.Graphics.DrawLine(Pens.Blue, pointStart, pointEnd);
    }

vvino2020 wrote:

Hi, I need the coding for multiple object selection in propertygrid.

vvino2020 wrote:

Please reply as soon as possible

Bastard Programmer from Hell
If you can't read my code, try converting it here[^]

Raghavendra Reddy C wrote:

Can anyone please help??

Raghavendra Reddy C wrote:

A similar issue was logged by another person here along with the code