C# (CSharp) keshe borrowSearch示例

示例#1

 private static borrowSearch _instance = null; // 单例模式
 public static borrowSearch CreateInstance()
 {
     if (_instance == null)
     {
         _instance = new borrowSearch();
     }
     return(_instance);
 }

示例#2

 private void borrowSearch_available_FormClosing(object sender, FormClosingEventArgs e)
 {
     borrowID  = -1;
     _instance = null;
     this.Dispose();
 }