組合框選擇多個項目

Question

有人可以解釋這種行爲嗎？

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不僅MouseOver選中多個項目（不打算），但是當我Select的項目（即鼠標懸停）的代碼去Selection_Changed事件，改變了右邊的圖片（按預期），但在加載圖片時，會出現一條錯誤消息，指出路徑中存在無效字符。

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BD.Shape xShape = new BD.Shape(); 
comboBoxShapes.ItemsSource = xShape.GetListOfShapes(); 

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public List<String> GetListOfShapes() 
    { 
     List<String> iList = new List<String>(); 
     try 
     { 
      GetConnectionString iGet = new GetConnectionString(); 
      System.Data.OleDb.OleDbConnection iConnect = new System.Data.OleDb.OleDbConnection(); 
      iConnect.ConnectionString = iGet.ConnectionString(); 
      iConnect.Open(); 
      System.Data.OleDb.OleDbCommand iCommand = new System.Data.OleDb.OleDbCommand(); 
      iCommand.Connection = iConnect; 
      iCommand.CommandText = "Select ShapeName from Shapes "; 
      System.Data.OleDb.OleDbDataReader iRead = iCommand.ExecuteReader(); 
      while (iRead.Read()) 
      { 
       Shape iShape = new Shape(); 
       iShape.ShapeName = iRead["ShapeName"].ToString(); 
       iList.Add(iShape.ShapeName); 
      } 

     } 
     catch 
     { 
      MessageBox.Show("Someone better call batman or something `\\(^_^)_/`"); 
     } 
     return iList; 
    } 

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請注意，如果我選擇其他任何在它破折號-只選擇一個項目。有沒有隱藏/無效的字符....

Answer 1

你確定數據中沒有新的行字符？

調試該列表中的項目數。

string same = "same" + Environment.NewLine + "next Line"; 
List<string> lstring = new List<string> { "one", "two - a", "two - b", "three", "three", same, same }; 
cb1.ItemsSource = lstring; 

這具有您描述的選擇行爲。