Create your own Input Box

Windows Forms : Input box

Simple code to create your own Input-box.

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

/// 

/// Summary description for frmInputBox.
/// 
public class frmInputBox : System.Windows.Forms.Form
{
 private string _title = "Title";
 private string _prompt = "Please enter in a value:";
 private string _inputValue = string.Empty;
 
 private System.Windows.Forms.Label lblPrompt;
 private System.Windows.Forms.TextBox txtInput;
 private System.Windows.Forms.Button cmdOK;
 private System.Windows.Forms.Button cmdCancel;

 /// 

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

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

  SetValues();
 }

 public frmInputBox(string prompt, string title, string inputValue)
 {
  //
  // Required for Windows Form Designer support
  //
  InitializeComponent();
 
  this._title = title;
  this._prompt = prompt;
  this._inputValue = inputValue;

  SetValues();
 }

 private void SetValues()
 {
  this.Text = this._title;
  this.lblPrompt.Text = this._prompt;
  this.txtInput.Text = this._inputValue;
 }

 /// 

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

 #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.txtInput = new System.Windows.Forms.TextBox();
  this.cmdOK = new System.Windows.Forms.Button();
  this.cmdCancel = new System.Windows.Forms.Button();
  this.SuspendLayout();
  //
  // lblPrompt
  //
  this.lblPrompt.Location = new System.Drawing.Point(8, 8);
  this.lblPrompt.Name = "lblPrompt";
  this.lblPrompt.Size = new System.Drawing.Size(344, 56);
  this.lblPrompt.TabIndex = 0;
  this.lblPrompt.Text = "Please enter in a value:";
  //
  // txtInput
  //
  this.txtInput.Location = new System.Drawing.Point(8, 80);
  this.txtInput.Name = "txtInput";
  this.txtInput.Size = new System.Drawing.Size(416, 20);
  this.txtInput.TabIndex = 1;
  this.txtInput.Text = "";
  //
  // cmdOK
  //
  this.cmdOK.DialogResult = System.Windows.Forms.DialogResult.OK;
  this.cmdOK.Location = new System.Drawing.Point(360, 8);
  this.cmdOK.Name = "cmdOK";
  this.cmdOK.TabIndex = 2;
  this.cmdOK.Text = "OK";
  this.cmdOK.Click += new System.EventHandler(this.cmdOK_Click);
  //
  // cmdCancel
  //
  this.cmdCancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
  this.cmdCancel.Location = new System.Drawing.Point(360, 40);
  this.cmdCancel.Name = "cmdCancel";
  this.cmdCancel.TabIndex = 3;
  this.cmdCancel.Text = "Cancel";
  this.cmdCancel.Click += new System.EventHandler(this.cmdCancel_Click);
  //
  // frmInputBox
  //
  this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
  this.ClientSize = new System.Drawing.Size(440, 109);
  this.Controls.Add(this.cmdCancel);
  this.Controls.Add(this.cmdOK);
  this.Controls.Add(this.txtInput);
  this.Controls.Add(this.lblPrompt);
  this.KeyPreview = true;
  this.MaximizeBox = false;
  this.MaximumSize = new System.Drawing.Size(448, 136);
  this.MinimizeBox = false;
  this.MinimumSize = new System.Drawing.Size(448, 136);
  this.Name = "frmInputBox";
  this.ShowInTaskbar = false;
  this.SizeGripStyle = System.Windows.Forms.SizeGripStyle.Hide;
  this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
  this.Text = "Title";
  this.Activated += new System.EventHandler(this.frmInputBox_Activated);
  this.ResumeLayout(false);
  this.KeyDown += new KeyEventHandler(frmInputBox_KeyDown);

 }
 #endregion

 private void frmInputBox_Activated(object sender, EventArgs e)
 {
  this.txtInput.Focus();
  this.txtInput.SelectAll();
 }

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

 private void cmdCancel_Click(object sender, System.EventArgs e)
 {
  this.Close();
 }
 
 public string InputValue
 {
  get { return this._inputValue; }
  set { this._inputValue = value; }
 }
 
 public string Title
 {
  get { return this._title; }
  set { this._title = value; }
 }

 public string Prompt
 {
  get { return this._prompt; }
  set { this._prompt = value; }
 }

 public static string InputBox(string prompt, string title, string inputValue)
 {
  string retVal = string.Empty;

  frmInputBox frm = new frmInputBox(prompt, title, inputValue);
  if(frm.ShowDialog() == DialogResult.OK)
   retVal = frm.InputValue;
  
  frm.Dispose();

  return retVal;
 }

 private void frmInputBox_KeyDown(object sender, KeyEventArgs e)
 {
  if(e.KeyData == Keys.Enter)
   cmdOK_Click(sender, EventArgs.Empty);
  else if(e.KeyData == Keys.Escape)
   cmdCancel_Click(sender, EventArgs.Empty);
 }
}