关于ListBox，CheckBoxList，DropDownList，RadioButtonList的用法

四个都是选择控件，用法大同小异，基本都是指定键值对：

 

直接加选择项：

  void way1()
  {
   DropDownList1.Items.Add("c#");
   DropDownList1.Items.Add("vb");
   DropDownList1.Items.Add("c");
   DropDownList1.Items.Add("java");

   ListBox1.Items.Add("c#");
   ListBox1.Items.Add("VB");
   ListBox1.Items.Add("C++");
   ListBox1.Items.Add("JAVA");
    
   CheckBoxList1.Items.Add("c#");
   CheckBoxList1.Items.Add("VB");
   CheckBoxList1.Items.Add("javascript");
   CheckBoxList1.Items.Add("php");

   RadioButtonList1.Items.Add("asp");
   RadioButtonList1.Items.Add("php");
   RadioButtonList1.Items.Add("jsp");
   RadioButtonList1.Items.Add("ajax");
  }

 

哈斯表法：

void way2()
  {
   Hashtable ht=new Hashtable();
   ht.Add("1","c#");
   ht.Add("2","C++");
   ht.Add("3","php");
   ht.Add("4","CGI");

   this.DropDownList2.DataSource=ht;
   DropDownList2.DataTextField="Value";
   DropDownList2.DataValueField="Key";
   DropDownList2.DataBind();

   this.ListBox2.DataSource=ht;
   ListBox2.DataTextField="value";
   ListBox2.DataValueField="key";
   ListBox2.DataBind();

   this.CheckBoxList2.DataSource=ht;
   CheckBoxList2.DataTextField="value";
   CheckBoxList2.DataValueField="key";
   CheckBoxList2.DataBind();

   this.RadioButtonList2.DataSource=ht;
   RadioButtonList2.DataTextField="value";
   RadioButtonList2.DataValueField="key";
   RadioButtonList2.DataBind();
  }

 

SortedList方法：

  void way3()
  {
   SortedList s1=new SortedList();
   s1.Add("1","haha");
   s1.Add("2","hehe");
   s1.Add("3","xixi");
   s1.Add("4","heihei");

   this.DropDownList3.DataSource=s1;
   DropDownList3.DataTextField="value";
   DropDownList3.DataValueField="key";
   DropDownList3.DataBind();

  }

 

用数据对象dataread方法：

void way4()
  {
   OleDbConnection cn=new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+Server.MapPath("sailing.mdb")+";Persist Security Info=False");
   cn.Open();
   OleDbCommand cmd=new OleDbCommand();
   cmd.Connection=cn;
   cmd.CommandText="select RoleName,RoleID from Role";

   OleDbDataReader dr=cmd.ExecuteReader();

   while(dr.Read())
   {
    ListItem li=new ListItem(dr[0].ToString(),dr[1].ToString());
    this.ListBox4.Items.Add(li);
   }
   dr.Close();
   cn.Close();
  }

 

用数据集法：

    OleDbConnection cn=new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source="+Server.MapPath("sailing.mdb")+";Persist Security Info=False");
    cn.Open();
    OleDbCommand cmd=new OleDbCommand();
    cmd.Connection=cn;
    cmd.CommandText="select RoleName,RoleID from Role";

    OleDbDataAdapter adp=new OleDbDataAdapter(cmd);
    DataSet ds=new DataSet();
    adp.Fill(ds);

    this.CheckBoxList4.DataSource=ds.Tables[0];
    this.CheckBoxList4.DataTextField=ds.Tables[0].Columns[0].ToString();
    this.CheckBoxList4.DataValueField=ds.Tables[0].Columns[1].ToString();
    this.CheckBoxList4.DataBind();