一些被废弃的代码

一些被废弃的代码：
1、dataGrid1_MouseDown：
  private void dataGrid1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
  {
      //HitTest 方法返回包含所单击区域的行和列的 DataGrid.HitTestInfo 对象
      DataGrid myGrid = (DataGrid) sender;
      System.Windows.Forms.DataGrid.HitTestInfo hti;
      hti = myGrid.HitTest(e.X, e.Y);
  
   switch (hti.Type)
   {
     case System.Windows.Forms.DataGrid.HitTestType.ColumnHeader :   //列 头
     //SortColumn(dataGrid1,hti.Column);
     //SortDataGrid(sender, e);
     break;
   }
}
2、运行时间
    DateTime startTime = System.DateTime.Now;

   TimeSpan ts= DateTime.Now.Subtract(startTime);
   double count= ts.TotalMilliseconds;
   MessageBox.Show("页面执行所用时间1:"+count.ToString());

   System.DateTime endTime = System.DateTime.Now;
   System.TimeSpan ts2= endTime - startTime;
   MessageBox.Show("页面执行所用时间2:" + ts2.Milliseconds + " 毫秒");

3、构造一些combox的DataSource :
 #region/***教育程度***/
  private void FillComboBoxSorts()  
  {
   try
   {
    this.cmbSort.Items.Clear();
    this.cmbSort.Items.Add("小学");
    this.cmbSort.Items.Add("初中");
    this.cmbSort.Items.Add("高中");
   }
   catch (Exception err)
   {
    MessageBox.Show(this,err.Message,"加载学科",MessageBoxButtons.OK,MessageBoxIcon.Error);
   }
  
  }

  private void cmbSort_SelectedIndexChanged(object sender, System.EventArgs e)
  {
   string  selectedText=cmbSort.Text;
   
   p_operTableName=string.Empty;
   cmbGetTableName.SelectedIndex=-1;

   if(selectedText.IndexOf("小学")>-1)
   {
    p_operTableName="小学";
   }
   else if(selectedText.IndexOf("初中")>-1)
   {
    p_operTableName="初中";
   }

   else if(selectedText.IndexOf("高中")>-1)
   {
    p_operTableName="高中";
   }
   this.cmbGetTableName.Enabled=true;
   FillComboxTableNames();
  }

  #endregion

  #region/***构造课程***/
  private void SetHashTable()
  {
   hashT=new Hashtable();
   hashT.Add( "数学","SHUXUE");
   hashT.Add( "语文", "YUWEN" );
   hashT.Add( "英语", "YINGYU" );
   hashT.Add( "地理", "DILI" );

   hashS=new Hashtable();
   hashS.Add( "英语", "YINGYU" );
   hashS.Add( "语文", "YUWEN" );
   hashS.Add( "数学","SHUXUE");
  
 
  }
  #endregion

  #region /***操作课程***/
  private  void FillComboxTableNames()
  {
   try
   {
   
    cmbGetTableName.Items.Clear();

    if(p_operTableName.IndexOf("小学")>-1)
    {
     if(hashS!=null)
     {
      IDictionaryEnumerator myEnumerator=hashS.GetEnumerator();
      while ( myEnumerator.MoveNext() )
       cmbGetTableName.Items.Add(myEnumerator.Key );
     }

    }
    else if(p_operTableName.IndexOf("初中")>-1)
    {

     if(hashT!=null)
     {
      IDictionaryEnumerator myEnumerator=hashT.GetEnumerator();
      while ( myEnumerator.MoveNext() )
       cmbGetTableName.Items.Add(myEnumerator.Key ); 
     }

    }

    else if(p_operTableName.IndexOf("高中")>-1)
    {
     if(hashT!=null)
     {
      IDictionaryEnumerator myEnumerator=hashT.GetEnumerator();
      while ( myEnumerator.MoveNext() )
       cmbGetTableName.Items.Add(myEnumerator.Key ); 
     }

    }
    //this.cmbOperTableName.SelectedIndex=0;
   }
  
   catch (Exception err)
   {
    MessageBox.Show(this,err.Message,"加载科目",MessageBoxButtons.OK,MessageBoxIcon.Error);
   }
  }

  private void cmbGetTableName_SelectedIndexChanged(object sender, System.EventArgs e)
  {
   string myValue=string.Empty;
   string  selectedText=cmbGetTableName.Text;
   if(hashT.ContainsKey(selectedText))
   {
    myValue=selectedText.ToString();
    p_operTableName+=myValue;
   }
   else  if(hashS.ContainsKey(selectedText))
   {
    myValue=selectedText.ToString();
    p_operTableName+=myValue;
   
   }

  }
 
  #endregion