Answer to Question #242462 in C# for Betty

Question

List of employees is available in listbox. Create an application to add selected or all

records from listbox to textbox (assume multi-line property of textbox is true)

Answer 1

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;


namespace ListEmployees
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }


        private void btnAdd_Click(object sender, EventArgs e)
        {
            if (lstEmployees.SelectedIndex != -1) {
                txtEmployees.Text += lstEmployees.SelectedItem.ToString()+Environment.NewLine;
                lstEmployees.Items.RemoveAt(lstEmployees.SelectedIndex);
            }
        }


        private void btnAddAll_Click(object sender, EventArgs e)
        {


            for (int i = 0; i < lstEmployees.Items.Count; i++) {
                txtEmployees.Text += lstEmployees.Items[i].ToString() + Environment.NewLine;
            }
            lstEmployees.Items.Clear();
        }
    }
}

namespace ListEmployees
{
    partial class Form1
    {
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.lstEmployees = new System.Windows.Forms.ListBox();
            this.btnAdd = new System.Windows.Forms.Button();
            this.btnAddAll = new System.Windows.Forms.Button();
            this.txtEmployees = new System.Windows.Forms.TextBox();
            this.SuspendLayout();
            // 
            // lstEmployees
            // 
            this.lstEmployees.FormattingEnabled = true;
            this.lstEmployees.Items.AddRange(new object[] {
            "Peter",
            "Mary",
            "Mike",
            "Julia"});
            this.lstEmployees.Location = new System.Drawing.Point(12, 12);
            this.lstEmployees.Name = "lstEmployees";
            this.lstEmployees.Size = new System.Drawing.Size(139, 134);
            this.lstEmployees.TabIndex = 0;
            // 
            // btnAdd
            // 
            this.btnAdd.Location = new System.Drawing.Point(157, 43);
            this.btnAdd.Name = "btnAdd";
            this.btnAdd.Size = new System.Drawing.Size(100, 23);
            this.btnAdd.TabIndex = 1;
            this.btnAdd.Text = "Add";
            this.btnAdd.UseVisualStyleBackColor = true;
            this.btnAdd.Click += new System.EventHandler(this.btnAdd_Click);
            // 
            // btnAddAll
            // 
            this.btnAddAll.Location = new System.Drawing.Point(157, 72);
            this.btnAddAll.Name = "btnAddAll";
            this.btnAddAll.Size = new System.Drawing.Size(100, 23);
            this.btnAddAll.TabIndex = 1;
            this.btnAddAll.Text = "Add All";
            this.btnAddAll.UseVisualStyleBackColor = true;
            this.btnAddAll.Click += new System.EventHandler(this.btnAddAll_Click);
            // 
            // txtEmployees
            // 
            this.txtEmployees.Location = new System.Drawing.Point(263, 12);
            this.txtEmployees.Multiline = true;
            this.txtEmployees.Name = "txtEmployees";
            this.txtEmployees.Size = new System.Drawing.Size(156, 134);
            this.txtEmployees.TabIndex = 2;
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(433, 167);
            this.Controls.Add(this.txtEmployees);
            this.Controls.Add(this.btnAddAll);
            this.Controls.Add(this.btnAdd);
            this.Controls.Add(this.lstEmployees);
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
            this.Name = "Form1";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "List Employees";
            this.ResumeLayout(false);
            this.PerformLayout();

        }

        #endregion

        private System.Windows.Forms.ListBox lstEmployees;
        private System.Windows.Forms.Button btnAdd;
        private System.Windows.Forms.Button btnAddAll;
        private System.Windows.Forms.TextBox txtEmployees;
    }
}