添加控件
要向一个表单中添加控件或者子窗口，需要打开工具箱ToolBox。这个工具箱的概念来自VB。点击菜单“视图－>工具箱”，激活工具箱功能：
ToolBox（工具箱）窗口的样子如下图所示。现在就可以添加控件了，添加方法与Visual Studio 的以前版本一样，拖放或者双击控件都可以。
首先在表单上托放下一个按钮和一个编辑框，然后让我们看看系统向初始组件（InitializeComponent）中增加了什么东西。
接着在属性窗口中设置控件的属性，这与VB 中的操作方式一样。在控件上点击右键，并点中“属性”菜单条就可以调出属性窗口。
现在看看InitializeComponent 方法，就会发现这些代码已经增加到其中了。接着手工修改一下这些代码：
this.components = new System.ComponentModel.Container ();
this.button1 = new System.WinForms.Button ();
this.textBox1 = new System.WinForms.TextBox ();
[url=]//@this.TrayHeight[/url] = 0;
[url=]//@this.TrayLargeIcon[/url] = false;
[url=]//@this.TrayAutoArrange[/url] = true;
button1.Location = new System.Drawing.Point (16, 24);
button1.Size = new System.Drawing.Size (88, 32);
button1.TabIndex = 0;
button1.Text = "Browse";
button1.Click += new System.EventHandler (this.button1_Click);
textBox1.Location = new System.Drawing.Point (128, 32);
textBox1.Text = "textBox1";
textBox1.TabIndex = 1;
textBox1.Size = new System.Drawing.Size (144, 20);
this.Text = "Form1";
this.AutoScaleBaseSize = new System.Drawing.Size (5, 13);
this.Click += new System.EventHandler (this.Form1_Click);
this.Controls.Add (this.textBox1);
this.Controls.Add (this.button1);
this.button1 = new System.WinForms.Button ();
this.textBox1 = new System.WinForms.TextBox ();
[url=]//@this.TrayHeight[/url] = 0;
[url=]//@this.TrayLargeIcon[/url] = false;
[url=]//@this.TrayAutoArrange[/url] = true;
button1.Location = new System.Drawing.Point (16, 24);
button1.Size = new System.Drawing.Size (88, 32);
button1.TabIndex = 0;
button1.Text = "Browse";
button1.Click += new System.EventHandler (this.button1_Click);
textBox1.Location = new System.Drawing.Point (128, 32);
textBox1.Text = "textBox1";
textBox1.TabIndex = 1;
textBox1.Size = new System.Drawing.Size (144, 20);
this.Text = "Form1";
this.AutoScaleBaseSize = new System.Drawing.Size (5, 13);
this.Click += new System.EventHandler (this.Form1_Click);
this.Controls.Add (this.textBox1);
this.Controls.Add (this.button1);
添加事件处理器
最后，要为按钮增加一个事件处理器，实现浏览文件的目的。在按钮上双击，打开Button1_Click事件处理器。同理，使用同样的方法可以为任何控件编写事件处理器。
protected void button1_Click (object sender, System.EventArgs e)
{
OpenFileDialog fdlg = new OpenFileDialog();
fdlg.Title = "C# Corner Open File Dialog" ;
fdlg.InitialDirectory = @"c:\" ;
fdlg.Filter = "All files (*.*)|*.*|All files (*.*)|*.*" ;
fdlg.FilterIndex = 2 ;
fdlg.RestoreDirectory = true ;
if(fdlg.ShowDialog() == DialogResult.OK)
{
textBox1.Text = fdlg.FileName ;
}
}
{
OpenFileDialog fdlg = new OpenFileDialog();
fdlg.Title = "C# Corner Open File Dialog" ;
fdlg.InitialDirectory = @"c:\" ;
fdlg.Filter = "All files (*.*)|*.*|All files (*.*)|*.*" ;
fdlg.FilterIndex = 2 ;
fdlg.RestoreDirectory = true ;
if(fdlg.ShowDialog() == DialogResult.OK)
{
textBox1.Text = fdlg.FileName ;
}
}
到此就完成了所有步骤，剩下的就是运行这个程序。它实现了浏览一个文件，然后将选择的文件名装进文本框的功能。请下载相关代码：winFormApp.zip 。
