PROBLEM WITH DYNAMIC BUTTON CLICK EVENT

[kiran]

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Data.SqlClient;

using System.Configuration;

using System.Data;

using System.IO;

using System.Collections;

using System.Text;



namespace WebApplication7

{

   public partial class viewad1 : System.Web.UI.Page

   {

       public string adv;

       public string usr;

       protected void Page_Load(object sender, EventArgs e)

       {

           if (!IsPostBack)

           {

               FillDropDownList();

               FillDropDownList1();    

           }

         

           

           

       }



       protected void FillDropDownList()

       {

           SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["sampledbConnectionString"].ConnectionString);

           conn.Open();



           DataSet ds = new DataSet();

           SqlDataAdapter myda = new SqlDataAdapter("Select * FROM category", conn);

           myda.Fill(ds);

           conn.Close();

           catddlist.DataSource = ds;

           catddlist.DataTextField = "category_name";

           catddlist.DataValueField = "category_id";

           catddlist.DataBind();

           catddlist.Items.Insert(0, new ListItem("Select", "0"));

           subcatlist.Items.Insert(0, new ListItem("Select", "0"));

           

       }



       

       protected void FillDropDownList1()

       {

           SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["sampledbConnectionString"].ConnectionString);

           conn.Open();



           DataSet ds = new DataSet();

           SqlDataAdapter myda = new SqlDataAdapter("Select * FROM places", conn);

           myda.Fill(ds);

           conn.Close();

          citylist.DataSource = ds;

           citylist.DataTextField = "cityname";

           citylist.DataValueField = "city";

           citylist.DataBind();

           citylist.Items.Insert(0, new ListItem("Select", "0"));

           }



       //Double click on Company`s DropDown.;





       protected void catddlist_SelectedIndexChanged(object sender, EventArgs e)

       {

           SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["sampledbConnectionString"].ConnectionString);

           conn.Open();



           int catid = Convert.ToInt32(catddlist.SelectedValue);

           DataSet ds = new DataSet();

           SqlDataAdapter myda = new SqlDataAdapter("Select subcategory_id,subcategoryname FROM subcategory where category_id=" + catid, conn);

           myda.Fill(ds);

           conn.Close();

           subcatlist.DataSource = ds;

           subcatlist.DataTextField = "subcategoryname";

           subcatlist.DataValueField = "subcategory_id";

           subcatlist.DataBind();

           subcatlist.Items.Insert(0, new ListItem("select", "0"));

       }



       protected void FillPage1()

       {

           ArrayList adlist = new ArrayList();

           string sub = subcatlist.SelectedValue.ToString();

           string cit = null;

           adlist = conclass1.getadbycat(sub, cit);



           Panel linkpanel = new Panel();

               

         

           int a = 0;

           foreach (adclass ad in adlist)

           {

               Button viewbutton = new Button();

               Label op = new Label();

               StringBuilder sb = new StringBuilder();

               HyperLink link = new HyperLink();

               viewbutton.Click += new EventHandler(viewbutton_Click);

               sb.Append(

                   string.Format(

                       @"<table class='adtable'>

           <tr>

               <th rowspan='6' width='150px'><img runat='server' src='{6}' /></th>

               <th width='50px'>Title: </td>

               <td>{1}</td>

           </tr>

           <tr>

               <th>Id: </th>

               <td>{0}</td>

           </tr>

<tr>

               <th>Price: </th>

               <td>{2} Rs</td>

           </tr>



           <tr>

               <th>Type: </th>

               <td>{3}</td>

           </tr>



           <tr>

               <th>Description: </th>

               <td>{4}</td>

           </tr>

           <tr>

               <th>Posted by: </th>

               <td>{5}</td>

           </tr>

           <tr>

               <td colspan='2'>{5}</td>

           </tr>          

           

          </table>

", ad.product_id, ad.title, ad.price, ad.type, ad.description, ad.email_username, ad.imagepath));





               if (sb.ToString() != "")

                   op.Text = sb.ToString();



               else

                   op.Text = "No Results";









               viewbutton.Text = "View ad";

               link.NavigateUrl = "~/userpage.aspx";



               linkpanel.Controls.Add(op);

               linkpanel.Controls.Add(viewbutton);

           }





           panelop.Controls.Add(linkpanel);

       }

       protected void viewbutton_Click(object sender, EventArgs e)

   {   Response.Write("hello");

       Response.Redirect("login.aspx");

   }



           protected void FillPage()

       {  

           ArrayList adlist = new ArrayList();

           string sub = subcatlist.SelectedValue.ToString();

           string cit = citylist.SelectedValue.ToString();

           adlist = conclass1.getadbycat(sub,cit);

           int a = 0;

           Panel linkpanel = new Panel();

           foreach (adclass ad in adlist)

           {

             

               Label op = new Label();

               

               StringBuilder sb = new StringBuilder();

               Button viewbutton = new Button();

               adv = ad.product_id.ToString();

               usr=ad.email_username.ToString();

              sb.Append(

                   string.Format(

                       @"<table class='adtable'>

           <tr>

               <th rowspan='6' width='150px'><img runat='server' src='{6}' /></th>

               <th width='50px'>Title: </td>

               <td>{1}</td>

           </tr>

           <tr>

               <th>Id: </th>

               <td>{0}</td>

           </tr>

<tr>

               <th>Price: </th>

               <td>{2} Rs</td>

           </tr>



           <tr>

               <th>Type: </th>

               <td>{3}</td>

           </tr>



           <tr>

               <th>Description: </th>

               <td>{4}</td>

           </tr>

           <tr>

               <th>Posted by: </th>

               <td>{5}</td>

           </tr>

           <tr>

               <td colspan='2'>{5}</td>

           </tr>          

           

          </table>

", ad.product_id, ad.title, ad.price, ad.type, ad.description, ad.email_username, ad.imagepath));



           if (sb.ToString() != "")

               op.Text = sb.ToString();



           else

               op.Text = "No Results";









           viewbutton.Text = "View Ad";

          // viewbutton.Click += new EventHandler(viewbutton_Click);

           viewbutton.Command += new CommandEventHandler(this.viewbutton_Click);

           viewbutton.CommandArgument = ad.email_username.ToString();

               

           linkpanel.Controls.Add(op);

           linkpanel.Controls.Add(viewbutton);

           }

           panelop.Controls.Add(linkpanel);

           }

          protected void viewbutton_Click(object sender, CommandEventArgs e )

           {

               Response.Redirect("homepage.aspx");

               Response.Write(e.CommandArgument.ToString());

           }

         

       

           

       protected void subcatlist_SelectedIndexChanged(object sender, EventArgs e)

       {



           FillPage1();

           if(!IsPostBack)

           FillDropDownList1();

           

}



       protected void citylist_SelectedIndexChanged(object sender, EventArgs e)

       {

           FillPage();

       }





     

   }

}

In this file the dynamic button(viewbutton) click is not firing...please reply...

Attachments:

viewad.aspx.cs (7.83 KB)

[Admin]

Hi Kiran

The following lines of code seemed to work for me.
Looks like you already tried it out so I'm not sure why it wouldn't work.
Perhaps you can post your full project so we can have a look?


These worked for me:
for (//Enter for loop)
{
  Button vButton = new Button();
  vButton.Click += new EventHandler(vButton_Click);
  Panel1.Controls.Add(vButton);
}

private void vButton_Click(object sender, EventArgs e)
{
  //Your code here
}

[kiran]

here is my full project ...i have tried a few things ...still not working.. error occurs when i run viewad.aspx page with viewad.master as master page
.please take a look also at the javascript function redirect() in viewad.master page. i have used .onclientclick to execute the statements in redirect(). if that function is not possible...then  i have heard of seeion creating by generating cookies....i hav'nt understood that....please provide its sample or a better code
WebApplication7f.rar (486.13 KB)WebApplication7f1.rar (843.48 KB)
please reply....thanks in advance....