Windows Forms

Ahamed Azeem wrote:

Tell me an real time use of an interface.

Ahamed Azeem wrote:

Apart from importing namespace is there any use for "Using" keyword in C#.net.

I are Troll

Ahamed Azeem wrote:

Why do we want to go for interfaces rather than normal method definition.

Ahamed Azeem wrote:

Your second answer is not clear to me. Could you pls explain more

static class SomeClass 
{
  static void someMethod () 
  {
    System.Diagnostics.Debug.WriteLine("bla");
  }
}

using Diag = System.Diagnostics;
static class SomeClass 
{
  static void someMethod () 
  {
   Diag.Debug.WriteLine("bla");
  }
}

using (Font font1 = new Font("Arial", 10.0f)) 
{
    byte charset = font1.GdiCharSet;
}

Happy Reading

Ahamed Azeem wrote:

real time use of an interface

Ahamed Azeem wrote:

for "Using"

yu-jian wrote:

I am using the visio to design the UI, but I think that the effect is boring.

I are Troll

<br />
using System;<br />
using System.Collections.Generic;<br />
using System.ComponentModel;<br />
using System.Data;<br />
using System.Drawing;<br />
using System.Linq;<br />
using System.Text;<br />
using System.Windows.Forms;<br />
<br />
namespace WindowsFormsApplication5<br />
{<br />
    public partial class Form1 : Form<br />
    {<br />
        public Form1()<br />
        {<br />
            InitializeComponent();<br />
            this.button1.MouseMove += new MouseEventHandler(Form1_MouseMove);<br />
        }<br />
<br />
        private void button1_MouseDown(object sender, MouseEventArgs e)<br />
        {<br />
            this._allowDrag = true;<br />
        }<br />
<br />
        /// <summary><br />
        /// Recore the bool value; if true, the button's positon will be changed;<br />
        /// </summary><br />
        private bool _allowDrag;<br />
<br />
        private void Form1_MouseMove(object sender, MouseEventArgs e)<br />
        {<br />
            if (this._allowDrag)<br />
            {<br />
                this.button1.Location = new Point(e.X + this.button1.Location.X, e.Y + this.button1.Location.Y);<br />
            }<br />
        }<br />
<br />
        private void button1_MouseUp(object sender, MouseEventArgs e)<br />
        {<br />
            if (this._allowDrag)<br />
                this._allowDrag = false;<br />
        }<br />
    }<br />
}<br />
<br />