InputBox Function

InputBoxDialog.cs

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

namespace System
{
  /// <summary>
  /// 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 btnOK;
    private System.Windows.Forms.TextBox txtInput;
    /// <summary>
    /// 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

    /// <summary>
    /// 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
    /// <summary>
    /// 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.txtInput = new System.Windows.Forms.TextBox();
    	this.btnOK = new System.Windows.Forms.Button();
    	this.btnCancel = 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, 9);
    	this.lblPrompt.Name = "lblPrompt";
    	this.lblPrompt.Size = new System.Drawing.Size(302, 82);
    	this.lblPrompt.TabIndex = 3;
    	// 
    	// txtInput
    	// 
    	this.txtInput.Location = new System.Drawing.Point(8, 100);
    	this.txtInput.Name = "txtInput";
    	this.txtInput.Size = new System.Drawing.Size(379, 20);
    	this.txtInput.TabIndex = 0;
    	// 
    	// btnOK
    	// 
    	this.btnOK.Location = new System.Drawing.Point(320, 10);
    	this.btnOK.Name = "btnOK";
    	this.btnOK.Size = new System.Drawing.Size(75, 25);
    	this.btnOK.TabIndex = 4;
    	this.btnOK.Text = "&OK";
    	this.btnOK.UseVisualStyleBackColor = true;
    	this.btnOK.Click += new System.EventHandler(this.BtnOKClick);
    	// 
    	// btnCancel
    	// 
    	this.btnCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
    	this.btnCancel.Location = new System.Drawing.Point(320, 41);
    	this.btnCancel.Name = "btnCancel";
    	this.btnCancel.Size = new System.Drawing.Size(75, 25);
    	this.btnCancel.TabIndex = 5;
    	this.btnCancel.Text = "&Cancel";
    	this.btnCancel.UseVisualStyleBackColor = true;
    	this.btnCancel.Click += new System.EventHandler(this.BtnCancelClick);
    	// 
    	// InputBoxDialog
    	// 
    	this.AcceptButton = this.btnOK;
    	this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
    	this.BackColor = System.Drawing.SystemColors.Control;
    	this.CancelButton = this.btnCancel;
    	this.ClientSize = new System.Drawing.Size(398, 128);
    	this.Controls.Add(this.btnCancel);
    	this.Controls.Add(this.btnOK);
    	this.Controls.Add(this.txtInput);
    	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();
    }
    private System.Windows.Forms.Button btnCancel;
    #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();
    }
    #endregion


    
    void BtnOKClick(object sender, EventArgs e)
    {
    	InputResponse = this.txtInput.Text;
    	this.Close();
    }
    
    void BtnCancelClick(object sender, EventArgs e)
    {
    	this.Close();
    }
  }
}








사용법

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;
		}
원문 : http://csharp.wikia.com/wiki/InputBox_Function