ASP.NETにおけるRadioButtonListはバックグラウンドデータをバインドしクリックイベントをトリガーする

この例では、RadioButtonListがバックグラウンドデータをバインドし、クリックイベントをトリガーする方法について説明します.
まずフロントページにRadioButtonListコントロールを配置する

.csファイルバックグラウンドバインドデータ

namespace BTApp
{
 public partial class Technology : System.Web.UI.Page
 {
  string Id;
  protected void Page_Load(object sender, EventArgs e)
  {
   if (!IsPostBack)
   {
    AspNetPager1.PageSize = 10;
    if (Request.QueryString["Id"] != null)
    {
     Id = Request.QueryString["Id"];
    }
    else
    { Id = ""; }
    GetDataBind(Id);
    DropDownListDataBind();
   }
  }
  //RadioButtonList      
  private void DropDownListDataBind()
  {
   ExpertInfoBLL bll = new ExpertInfoBLL();
   DataTable dt = bll.GetDepInfo();
   foreach (DataRow dr in dt.Rows)
   {
    RadioButtonList1.Items.Add(dr["Name"].ToString());//          
    
   }
   this.RadioButtonList1.DataSource = dt;
   this.RadioButtonList1.DataTextField = "Name";
   this.RadioButtonList1.DataValueField = "Id";
   this.RadioButtonList1.RepeatDirection = RepeatDirection.Horizontal;
   this.RadioButtonList1.DataBind();
  
  }
  private void GetDataBind(string Id)
  {
   //             
   TechnologyBLL bll = new TechnologyBLL();
   string strWhere = " 1=1 ";
   if (Id != "" && Id != null)
   {
    strWhere += string.Format(" and a.Depinfo_Id = '{0}'", Id);
   }
   AspNetPager1.RecordCount = bll.GetCountList(strWhere);
   //     
   DataTable dt = bll.GetList((AspNetPager1.CurrentPageIndex - 1) * AspNetPager1.PageSize, AspNetPager1.PageSize, strWhere, "CreateTime");
   this.Repeater1.DataSource = dt;
   this.Repeater1.DataBind();


  }
  protected void AspNetPager1_PageChanged(object sender, EventArgs e)
  {
   GetDataBind(Id);
  }

//           id,    
  protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
  {
    string Id;
    Id = RadioButtonList1.SelectedValue;
    GetDataBind(Id);
  }
  
 }
}

TechnologyBLL層の方法

namespace BTAppBLL
{
 public class TechnologyBLL
 {
  TechnologyDAL dal = new TechnologyDAL();
  public DataTable GetList(int startPage, int pageSize, string where, string orderby)
  {


   DataTable dTable = dal.GetList(startPage, pageSize, where, orderby);
   return dTable;
  }
  public int GetCountList(string where)
  {


   int record = dal.GetCountList(where);
   return record;
  }
  public DataTable GetListShow(string TechnologyId)
  {
   DataTable dTable = dal.GetModel(TechnologyId);
   return dTable;
  }
  public DataTable GetPicture(string TechnologyId)
  {
   DataTable dTable = dal.GetPicture(TechnologyId);
   return dTable;
  }
 }
}

TechnologyDAL層の方法

namespace BTAppDAL
{
 public class TechnologyDAL
 {
  public DataTable GetList(int startPage, int pageSize, string where, string orderby)
  {
   string strSql = string.Format("SELECT a.TechnologyId,a.TechnologyName,a.Summarize,a.Effect,a.MainPoint,a.AppropriateArea,a.Attention,a.CreateTime,a.CreatUser,a.UpdateTime,b.Name FROM Technology AS a 
" +
    "left join Sys_DepInfo AS b ON a.Depinfo_Id=b.Id 
" +
    "where a.IsActive='1' and {0} ", where);


   string proc = "proc_CommonPagerWithStatement";
   SqlConnection con = SqlDbHelper.Connection;
   SqlParameter[] sp = { new SqlParameter("@intStartIndex", startPage), 
         new SqlParameter("@intPageSize", pageSize),
         new SqlParameter("@varStatement", strSql), 
         new SqlParameter("@varSortExpression", orderby+" DESC") };
   DataTable dt = SqlDbHelper.GetDataSet(proc, sp, con);
   return dt;


  }
  public int GetCountList(string where)
  {
   int countRecord = 0;
   string strSql = string.Format("select COUNT(TechnologyId) as countRecord from(SELECT a.TechnologyId,a.TechnologyName,a.Summarize,a.Effect,a.MainPoint,a.AppropriateArea,a.Attention,a.CreateTime,a.CreatUser,a.UpdateTime,b.Name FROM Technology AS a 
" +
    "left join Sys_DepInfo AS b ON a.Depinfo_Id=b.Id 
" +
    "where a.IsActive='1' and {0} ) as c", where);
   SqlConnection con = SqlDbHelper.Connection;
   try
   {
    if (con.State == System.Data.ConnectionState.Closed)
     con.Open();
    DataTable dt = SqlDbHelper.GetDataTable(strSql);
    if (dt.Rows.Count > 0)
     countRecord = int.Parse(dt.Rows[0]["countRecord"].ToString());
   }
   catch (Exception)
   {
    throw;
   }
   finally
   {
    if (con.State == ConnectionState.Open)
    {
     con.Close();
    }
   }


   return countRecord;
  }
  public DataTable GetModel(string TechnologyId)
  {
   string strSql = string.Format("SELECT a.TechnologyId,a.TechnologyName,a.Summarize,a.Effect,a.MainPoint,a.AppropriateArea,a.Attention,a.CreateTime,a.CreatUser,a.UpdateTime,b.Name FROM Technology AS a 
" +
    "left join Sys_DepInfo AS b ON a.Depinfo_Id=b.Id 
" +
    "where a.IsActive='1' and a.TechnologyId = '{0}' ", TechnologyId);


   DataTable dataTable = SqlDbHelper.GetDataTable(strSql);
   return dataTable;
  }
  public DataTable GetPicture(string TechnologyId)
  {
   string strSql = string.Format("SELECT TOP 5 a.Files_Id,a.Files_Name,a.Files_Path FROM dbo.Com_Files AS a 
" +
    "LEFT JOIN dbo.Technology AS b ON a.ForeignKey_Id=b.TechnologyId 
" +
    "WHERE b.IsActive=1 and a.ForeignKey_Id = '{0}' ", TechnologyId);


   DataTable dataTable = SqlDbHelper.GetDataTable(strSql);
   return dataTable;
  }
 }
}

ExpertInfoBLLレイヤのメソッド

 public DataTable GetDepInfo()
  {
   DataTable dTable = dal.GetDepInfo();
   return dTable;
  }

ExpertInfoDALレイヤのメソッド

 public DataTable GetDepInfo()
  {
   try
   {
    StringBuilder str = new StringBuilder(@"SELECT Id,Name FROM dbo.Sys_DepInfo WHERE Is_Active='1' AND DepinfoType='1'");
    DataTable data = SqlDbHelper.GetDataTable(str.ToString());
    if (data.Rows.Count > 0)
    {
     return data;
    }
    else
    {
     return null;
    }
   }
   catch (Exception)
   {
    return null;
   }
  }

ページロード時にDropDownListDataBind()メソッドを呼び出してRadioButtonListのクリックイベントをトリガー

 protected void RadioButtonList1_SelectedIndexChanged(object sender, EventArgs e)
  {
    string Id;
    Id = RadioButtonList1.SelectedValue;
    GetDataBind(Id);
  }

ラジオボタンをクリックしてイベントをトリガーすることもできます.
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