C# WinForm 判断窗体控件是否修改过

本文转载：http://www.cnblogs.com/LinFx/archive/2011/12/23/2299895.html

1.自定义控件， 和接口

    interface IModify    {bool IsModified { get; }    }

class TextBoxEx : TextBox, IModify    {private bool isModified = false;

public bool IsModified        {get { return isModified; }        }

protected override void OnTextChanged(EventArgs e)        {this.isModified = true;base.OnTextChanged(e);        }    }

2.使用方法

        private void button1_Click(object sender, EventArgs e)        {var b = IsModify(this);            Text = b.ToString();        }

private bool IsModify(Control ctrl)        {foreach (Control control in ctrl.Controls)            {if (control.Controls.Count > 0)return IsModify(control);if (control is IModify)                {if (((IModify)control).IsModified)return true;                }            }return false;        }