how to bind data in dynamic checkboxlist on dynamic checkboxlist selected index change in asp.net c#?

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how to bind data in dynamic checkboxlist on dynamic checkboxlist selected index change in asp.net c#??
please help me out

Posted 9-May-14 19:29pm

Member 10276220

Updated 9-May-14 19:38pm

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[no name] 10-May-14 1:51am

what have tried yet Just show your code

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NorouziFar · Answer 1 · 2014-05-09T19:57:00

i used asp.net = DetailsView1,DropDownList1,Entities DataBase

in asp.net

ASP.NET

<asp:dropdownlist id="DropDownList1" runat="server" datatextfield="Name" datavaluefield="UserName" xmlns:asp="#unknown"></asp:dropdownlist><br />

in c# code for DropDownList1:

C#

if (!IsPostBack)
       {
           try
           {
               //DropDownList dropper = (DropDownList)DetailsView1.FindControl("DDL");
               //if (dropper != null)
               {
                   using (DBNezamEntities db = new DBNezamEntities())
                   {
                       var Query = from ro in db.Profiles.AsEnumerable()

                                   select new
                                   {
                                       UserName = ro.User.UserName,
                                       Name = getpro(ro.User.UserName)


                                   };
                       var Query2 = from val in Query
                                    orderby val.Name ascending
                                    select val;

                       DropDownList1.DataSource = Query2;
                       DropDownList1.DataBind();

                   }
               }
           }
           catch (Exception)
           {

               throw;
           }
       }

for save data in database:

C#

protected void DetailsView1_ItemInserting(object sender, DetailsViewInsertEventArgs e)
  {

      e.Values["UserName"] = DropDownList1.SelectedValue.ToString();
  }

sankarsan parida · Answer 2 · 2014-05-09T20:10:00

For Example:
HTML code

<asp:checkboxlist id="CheckBoxList1" runat="server" autopostback="true" onselectedindexchanged="CheckBoxList1_SelectedIndexChanged" xmlns:asp="#unknown">
           <asp:listitem text="Test1" value="1"></asp:listitem>
            <asp:listitem text="Test2" value="2"></asp:listitem>
       </asp:checkboxlist>
       <asp:panel runat="server" id="pnlDynamic" xmlns:asp="#unknown"> </asp:panel>

And Backend CODE

 protected void Page_Load(object sender, EventArgs e)
    {
        if (ViewState["cb"] != null) bindDynamicCB(Convert.ToInt32(ViewState["cb"]));
    }
    protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (CheckBoxList1.SelectedIndex > -1)
        {
            ViewState["cb"] = CheckBoxList1.SelectedValue;
            bindDynamicCB(Convert.ToInt32(ViewState["cb"]));
        }
    }
    void bindDynamicCB(int value)
    { 
        CheckBoxList cbDynamic = new CheckBoxList(); 
        //You just bind with database given your parameter condition
        //cbDynamic.Items.Add(new ListItem { Text = "Text" + value + 1, Value = "Val1" });
        //cbDynamic.Items.Add(new ListItem { Text = "Text" + value + 2, Value = "Val1" });
        //cbDynamic.Items.Add(new ListItem { Text = "Text" + value + 3, Value = "Val2" });
        cbDynamic.Datasource=PutYOurValueMehod(value);
cbDynamic.DataBinde();
//Create a dynamic event here
        cbDynamic.SelectedIndexChanged += cbDynamic_SelectedIndexChanged;
        cbDynamic.AutoPostBack = true;

        //Add your dynamic control to panel
        pnlDynamic.Controls.Add(cbDynamic);
    }
 void cbDynamic_SelectedIndexChanged(object sender, EventArgs e)
    {
        CheckBoxList cb=(CheckBoxList)sender;
        Response.Write(cb.Text);
    }

how to bind data in dynamic checkboxlist on dynamic checkboxlist selected index change in asp.net c#?

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