InputBox設計

以下的程式碼，是參考http://kelp-space.blogspot.com/2008/08/c-inputbox.html而建立的：
請在專案內新增一個.cs檔，然後把"程式碼"整個貼上去：

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace jiannrong
{
///

/// Summary description for InputBox.
///
public class InputBoxDialog : System.Windows.Forms.Form
{

#region Windows Contols and Constructor

private System.Windows.Forms.Label lblPrompt;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.TextBox txtInput;
///

/// Required designer variable.
///
private System.ComponentModel.Container components = null;

public InputBoxDialog()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();

//
// TODO: Add any constructor code after InitializeComponent call
//
}

#endregion

#region Dispose

///

/// Clean up any resources being used.
///
protected override void Dispose(bool disposing)
{
if (disposing)
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose(disposing);
}

#endregion

#region Windows Form Designer generated code
///

/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
///
private void InitializeComponent()
{
this.lblPrompt = new System.Windows.Forms.Label();
this.button1 = new System.Windows.Forms.Button();
this.txtInput = new System.Windows.Forms.TextBox();
this.btnOK = new System.Windows.Forms.Button();
this.SuspendLayout();
//
// lblPrompt
//
this.lblPrompt.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.lblPrompt.BackColor = System.Drawing.SystemColors.Control;
this.lblPrompt.Font = new System.Drawing.Font("Microsoft Sans Serif", 9.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.lblPrompt.Location = new System.Drawing.Point(12, 17);
this.lblPrompt.Name = "lblPrompt";
this.lblPrompt.Size = new System.Drawing.Size(303, 22);
this.lblPrompt.TabIndex = 3;
//
// button1
//
this.button1.DialogResult = System.Windows.Forms.DialogResult.Cancel;
this.button1.Location = new System.Drawing.Point(323, 45);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(64, 27);
this.button1.TabIndex = 2;
this.button1.Text = "&Cancel";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// txtInput
//
this.txtInput.Location = new System.Drawing.Point(8, 78);
this.txtInput.Name = "txtInput";
this.txtInput.Size = new System.Drawing.Size(379, 22);
this.txtInput.TabIndex = 0;
this.txtInput.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txtInput_KeyPress);
//
// btnOK
//
this.btnOK.DialogResult = System.Windows.Forms.DialogResult.OK;
this.btnOK.Location = new System.Drawing.Point(323, 12);
this.btnOK.Name = "btnOK";
this.btnOK.Size = new System.Drawing.Size(64, 27);
this.btnOK.TabIndex = 1;
this.btnOK.Text = "&OK";
this.btnOK.Click += new System.EventHandler(this.btnOK_Click);
//
// InputBoxDialog
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 15);
this.ClientSize = new System.Drawing.Size(399, 111);
this.Controls.Add(this.txtInput);
this.Controls.Add(this.button1);
this.Controls.Add(this.btnOK);
this.Controls.Add(this.lblPrompt);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
this.MaximizeBox = false;
this.MinimizeBox = false;
this.Name = "InputBoxDialog";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "InputBox";
this.Load += new System.EventHandler(this.InputBox_Load);
this.ResumeLayout(false);
this.PerformLayout();

}
#endregion

#region Private Variables
string formCaption = string.Empty;
string formPrompt = string.Empty;
string inputResponse = string.Empty;
string defaultValue = string.Empty;
#endregion

#region Public Properties
public string FormCaption
{
get { return formCaption; }
set { formCaption = value; }
} // property FormCaption
public string FormPrompt
{
get { return formPrompt; }
set { formPrompt = value; }
} // property FormPrompt
public string InputResponse
{
get { return inputResponse; }
set { inputResponse = value; }
} // property InputResponse
public string DefaultValue
{
get { return defaultValue; }
set { defaultValue = value; }
} // property DefaultValue

#endregion

#region Form and Control Events
private void InputBox_Load(object sender, System.EventArgs e)
{
this.txtInput.Text = defaultValue;
this.lblPrompt.Text = formPrompt;
this.Text = formCaption;
this.txtInput.SelectionStart = 0;
this.txtInput.SelectionLength = this.txtInput.Text.Length;
this.txtInput.Focus();
}


private void btnOK_Click(object sender, System.EventArgs e)
{
InputResponse = this.txtInput.Text;
this.Close();
}

private void button1_Click(object sender, System.EventArgs e)
{
this.Close();
}

public static string InputBox(string prompt, string title, string defaultValue)
{
InputBoxDialog ib = new InputBoxDialog();
ib.FormPrompt = prompt;
ib.FormCaption = title;
ib.DefaultValue = defaultValue;
ib.ShowDialog();
string s = ib.InputResponse;
ib.Close();
return s;
}// method: InputBox

private Button btnOK;

private void txtInput_KeyPress(object sender, KeyPressEventArgs e)
{
if (e.KeyChar == 13)
{
btnOK_Click(sender, e);
e.Handled = true;
}
}
#endregion
}
}