NullReferenceException when adding buttons to Panel

Question

I am trying to add number of buttons in container of a Panel in window Form, my implementation is as follows:

protected override void Order_Click(object sender, EventArgs e)
{    
  Menu = new MenuForm();
  CatButtons = new Button[5];
  CatButtons[0] = new Button();
  CatButtons[0].Text = "ljjih";
  CatButtons[0].Click += new System.EventHandler(btn_Click);
  Menu.Cat_Panel.Container.Add(CatButtons[0]);
}

I keep getting System.NullReferenceException at the last line

Menu.Cat_Panel.Container.Add(CatButtons[0]);

Note : CatButtons and Menu are already declared globally

Who takes care to initialize the Cat_Panel inside the MenuForm()? — Steve
– Steve, Commented Mar 19, 2015 at 22:50
But the button should be added to the Controls collection not to the Container. Right? — Steve
– Steve, Commented Mar 19, 2015 at 23:04

iwahdan · Accepted Answer · 2015-03-19 23:16:38Z

1

I Replaced :

Menu.Cat_Panel.Container.Add(CatButtons[0]);

with:

Menu.Cat_Panel.Controls.Add(CatButtons[0]);

And it Worked

answered Mar 19, 2015 at 23:16

iwahdan

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Comments

Ben Whyall · Accepted Answer · 2015-03-19 22:51:20Z

0

I might be stating the obvious but does Cat_Panel exists as its not in the code snippet you show ? If it doesnt it would explain the Null Reference exception.

Worth checking the existance of that first.

answered Mar 19, 2015 at 22:51

Ben Whyall

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