Hi ALL I'm having trouble figuring out..

I have one BTNCANCEL here and cmb1,cmb2,cm3, tb1,tb2.

How do i program so that it detect changes in cmb1,cmb2,cm3, tb1,tb2 and then when i click BTN cancel it will PROMPT to save yes/no [which i have already programed] if there is a change in either one of this[cmb1,cmb2,cm3, tb1,tb2] in runtime. and the program will close if there is no changes.

with reference to stored value in text file data.
[when I debug, the value stored in text file is displayed in cmb1,cmb2,cmb3,tb1,tb2]

So i would like to know how to do a program to BTNCANCEL_Click
that when it detected changes:

C# Syntax (Toggle Plain Text)

if (detect change)
{
using (SaveSetting settings = new SaveSetting())
                {
                    //read properties from dialogue
                    //when dialogue is yes it will run save and exit application
                    if (settings.ShowDialog() == DialogResult.Yes)
                    {
                        save();
                        Application.Exit();
                    }
                }
 
              }
else
{
   Close();
}
}

if (detect change) { using (SaveSetting settings = new SaveSetting()) { //read properties from dialogue //when dialogue is yes it will run save and exit application if (settings.ShowDialog() == DialogResult.Yes) { save(); Application.Exit(); } } } else { Close(); } }

LOL! did you read my reply??!!

LOL! did you read my reply??!!

This is what the event wiring for combobox selection change should look like in case you don't use VS designer:

C# Syntax (Toggle Plain Text)

// in form intialization:
            this.comboBox1.SelectedIndexChanged += new System.EventHandler(this.comboBox1_SelectedIndexChanged);
 
// then, just create this method for your form:
        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
        {
            // to retrieve it's index:
            int index = comboBox1.SelectedIndex;
            /// if your item is text, otherwise cast to proper type:
            string text = (string)comboBox1.SelectedItem;
        }

// in form intialization: this.comboBox1.SelectedIndexChanged += new System.EventHandler(this.comboBox1_SelectedIndexChanged); // then, just create this method for your form: private void comboBox1_SelectedIndexChanged(object sender, EventArgs e) { // to retrieve it's index: int index = comboBox1.SelectedIndex; /// if your item is text, otherwise cast to proper type: string text = (string)comboBox1.SelectedItem; }