Question

I am dynamically creating a table with data and check boxes in it, my problem is when i check to see one specific check-box is checked, out of many, it resets to the default state of false (note: its not just one it doesn’t work with, it works with non of the generated check boxes)

Before i create the page_load function i create the check box, further down i create the table, and populate it with data, then i set up a function to check on a click to see if the box was indeed checked, iv’e tried many iterations of this with no luck

protected void  table_builder(SqlDataReader readerinfo)
{
    //Create a new step for the user
    step3label.Text = "3.";
    //Table header
    TableHeaderRow hr = new TableHeaderRow();
    TableHeaderCell hc = new TableHeaderCell();
    TableHeaderCell hc2 = new TableHeaderCell();
    TableHeaderCell hc3 = new TableHeaderCell();
    hr.Cells.Add(hc);
    hc.Text = "ID"; //Assign header 1 with a name
    hr.Cells.Add(hc2);
    hc2.Text = "Name";//Assign header 2 with a name
    hr.Cells.Add(hc3);
    hc3.Text = "Selection";
    Table1.Rows.Add(hr);


    //Dynamic Table Generation
    int numcells = 3;
    int triswitch = 0;//this is use to chose which cell is made, id, name or selection
    string checkboxID = null;


    while (readerinfo.Read())   //execute the following aslong as there is data to fill the table with
    {
        for (int j = 0; j < 1; j++)
        {
            TableRow r = new TableRow();
            for (int i = 0; i < numcells; i++)
            {
                TableCell c = new TableCell();

                switch (triswitch)
                {
                    case 0: // this case sets the info for the feild id
                        c.Text = readerinfo.GetSqlGuid(0).ToString();
                        checkboxID = readerinfo.GetSqlGuid(0).ToString();
                        r.Cells.Add(c);
                        triswitch = 1;
                        break;

                    case 1:
                        c.Text = readerinfo.GetString(1);
                        r.Cells.Add(c);
                        triswitch = 2;
                        break;

                    case 2:
                        Checkbox_creator(checkboxID,ref c);
                        r.Cells.Add(c);
                        triswitch = 0;
                        break;

                }
            }
            Table1.Rows.Add(r);
        }
    }       
}

protected void Checkbox_creator(string id,ref TableCell send)
{
    //create the checbox
    ckbx = new CheckBox();
    ckbx.ID = "CBX" + checkboxid.ToString();
    checkboxid++;
    ckbx.InputAttributes.Add("value", id);
    send.Controls.Add(ckbx); //add the chekbox to the cell
    checkboxidlist.Add(id);//add the id of the checkbox to the list 
}



//
//AFTER DATATABLE IS LOADED
//

public void test()
{
    // Find control on page.
    CheckBox myControl1 = (CheckBox)Table1.FindControl("CBX0");
    if (myControl1 != null)
    {
        // Get control's parent.
        Control myControl2 = myControl1.Parent.Parent.Parent;
        Response.Write("Parent of the text box is : " + myControl2.ID);
        if (myControl1.Checked == true)
        {
            Response.Write("check box checked");
        }
    }
    else
    {
        Response.Write("Control not found");
    }
}
 //on Submit button click, execute the following function
protected void Submit_Click(object sender, EventArgs e)
{
    //Code to be executed
    string Userinput; //declare Userinput variable
    Userinput = Searchbox.Value; // Set variable to asp controll        
    Response.Write("<br /> <br />"+ Userinput +" <- user imput works");
    ConnectToSql(Userinput);//insert what the user submitted into a query
    test();
    //
    //
    //NoTe code validation is needed to prevent injections
    //  
}

Answer 1

add the check boxes to the page before the view state is loaded and the event fires. Do it in the OnInit method not the onload. Use Onload to see if they’re checked or not. Be sure you’re giving them ID’s. Unless this is a partial postback (ajax) then only render the check boxes if !IsPostback