title: I am getting error like "constructor on type 'system.string' cannot found" for a User Control in C#?
body: <p>For a usercontrol TextBox i am creating properties like <code>AutoCompleteCustomSource</code>, <code>AutoCompleteMode</code> and <code>AutoCompleteSource</code>:</p>
  
  <pre><code>public virtual AutoCompleteStringCollection AutoCompleteCustomSource 
  { 
      get { return txtLocl.AutoCompleteCustomSource; } 
      set { txtLocl.AutoCompleteCustomSource = value; } 
  }
  
  public virtual AutoCompleteMode AutoCompleteMode 
  { 
      get { return txtLocl.AutoCompleteMode; } 
      set { txtLocl.AutoCompleteMode = value; } 
  }
  
  public virtual AutoCompleteSource AutoCompleteSource 
  { 
      get { return txtLocl.AutoCompleteSource; } 
      set {txtLocl.AutoCompleteSource=value;} 
  }
  </code></pre>
  
  <p>I am creating like that but i am getting error like this for <code>AutoCompleteCustomSource</code> string collection. i show you the error 
  <img src="https://i.stack.imgur.com/ZkocC.png" alt="enter image description here"></p>
  
  <p>and what i want is i show in the below figure</p>
  
  <p><img src="https://i.stack.imgur.com/b3gyg.png" alt="enter image description here"></p>