CODEWITHSUNDEEP
c#winformscheckbox
Benny
Benny

Reputation: 8815

CheckBox.CheckedChanged not fired on winform

 public Form1()
    {
        InitializeComponent();
    }

    private void checkBox1_CheckedChanged(object sender, EventArgs e)
    {
        textBox1.Enabled = checkBox1.Checked;
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        checkBox1.Checked = false;
    }

I set the check state in load event handler, and why in this case, the CheckedChanged not fired? If i click the check box, then the CheckedChanged is fired.

Upvotes: 4

Views: 6225

Answers (1)

Steve
Steve

Reputation: 216273

If your checked state is initially false, then setting it to false again doesn't fire the CheckedChanged event.
That happens because the checked state isn't actually changed

This is the internal code used when trying to set the CheckBox1.Checked property

public void set_Checked(bool value)
{
    if (value != this.Checked)
    {
        this.CheckState = value ? CheckState.Checked : CheckState.Unchecked;
    }
}

Upvotes: 7

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