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Posted 28 Jun 2007

Form Changed Control

, 26 May 2008
A component that allows you to monitor all the controls on the form and list any that have changed (for dirty checking)
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;

namespace Form_Change_Control_Test_CSharp
    public partial class Form_Changetest : Form
        public Form_Changetest()

            this.Button_Reset.Click += new EventHandler(Button_Reset_Click);
            this.Button_WhatChanged.Click += new EventHandler(Button_WhatChanged_Click);

            this.formChangedComponent1.MonitoredControlChanged += new FormChangedComponent.MonitoredControlChangedEventHandler(formChangedComponent1_MonitoredControlChanged); 


        void formChangedComponent1_MonitoredControlChanged(object sender, FormChangedEventArgs e)
            if (e.ControlChanged is TextBox)
                if (e.Changed)
                    e.ControlChanged.BackColor = Color.Yellow; 
                    e.ControlChanged.BackColor = Color.White;

        void Button_WhatChanged_Click(object sender, EventArgs e)
            System.Text.StringBuilder _ctlsOut = new StringBuilder();
            foreach (Control  ctl in this.formChangedComponent1.ControlsThatHaveChanged  )
            System.Windows.Forms.MessageBox.Show(_ctlsOut.ToString(), @"Controls that have changed");  

        void Button_Reset_Click(object sender, EventArgs e)


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About the Author

Duncan Edwards Jones
Software Developer (Senior)
Ireland Ireland
C# / SQL Server developer
Microsoft MVP (Azure) 2017
Microsoft MVP (Visual Basic) 2006, 2007

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