Question

I Want Use a Panel in a Windows Form in C#.net. I Set Visible Property of this Control to false And When I Click on a Button, Panel is showed. I Want Show a Panel by some Effect.

Please Help me for this

Answer 1

You are leaving us guessing about what kind of effect you are looking for. I’ll just arbitrarily pick a collapse and expand effect. It takes a Timer, you implement the effect in a Tick event handler. Here’s an example, it requires a Panel, Timer and Button:

  public partial class Form1 : Form {
    public Form1() {
      InitializeComponent();
      timer1.Interval = 16;
      timer1.Tick += new EventHandler(timer1_Tick);
      panel1.BackColor = Color.Aqua;
      mWidth = panel1.Width;

    }
    int mDir = 0;
    int mWidth;
    void timer1_Tick(object sender, EventArgs e) {
      int width = panel1.Width + mDir;
      if (width >= mWidth) {
        width = mWidth;
        timer1.Enabled = false;
      }
      else if (width < Math.Abs(mDir)) {
        width = 0;
        timer1.Enabled = false;
        panel1.Visible = false;
      }
      panel1.Width = width;
    }

    private void button1_Click(object sender, EventArgs e) {
      mDir = panel1.Visible ? -5 : 5;
      panel1.Visible = true;
      timer1.Enabled = true;
    }
  }