I have made a form which adds controls dynamically with user selecting the type of control he wants which is placed inside a placeholder .. Now i want add a Image Button Click event to dynamically created Image Button .. Which I have no success in for the past two days .. I have tried using delegates n event handling which is a new concept for me ..
I am using this to iterate and assign properties
<
void IterateThroughChildren(Control parent)
{
foreach (Control c in parent.Controls)
{
if (c.GetType().ToString().Equals("System.Web.UI.WebControls.ImageButton") &&
c.ID == null)
{
((ImageButton)c).ImageUrl = @"pictures/close-icon.png";
((ImageButton)c).ID = "Imagebtn" +count.ToString();
((ImageButton)c).Click += new ImageButtonClickEventHandler(UserControl1_ImageButtonClickEvent);
}>
And m using this delegate and event handlers to specify the function
<public delegate void ImageButtonClickEventHandler(Object sender, EventArgs args);
public event ImageButtonClickEventHandler ImageButtonClickEvent;
private void imageButton_Click(object sender, System.EventArgs e)
{
if (ImageButtonClickEvent != null)
{
ImageButtonClickEvent(sender, e);
}
}
private void UserControl1_ImageButtonClickEvent(Object sender, EventArgs args)
{
CreateRadioButtons(sender , args);
}>
**
I would also like to know other methods of calling a function on
dynamically created conlrols ..
**
Thanks in advance for any kind of assistant ..
here is the complete code ..
<using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
public partial class _Default : System.Web.UI.Page
{
int count = 1;
static int m = 0;
static int n = 0;
protected void Page_Load(object sender, EventArgs e)
{
btnAddControl.Visible = false;
btnAddText.Visible = false;
}
void IterateThroughChildren(Control parent)
{
foreach (Control c in parent.Controls)
{
if (c.GetType().ToString().Equals("System.Web.UI.WebControls.TextBox") &&
c.ID == null)
{
((TextBox)c).ID = "txtQ" + count.ToString();
((TextBox)c).Text = "Add Text Here" + count.ToString();
((TextBox)c).Columns = 90;
((TextBox)c).Focus();
//((TextBox)c).TextChanged = "CreateRadioButtons()";
// ((TextBox)c).Attributes["onclick"] = "this.CreateRadiobuttons()";
//((TextBox)c).TextChanged();
//+= CreateRadioButton;
//((TextBox)c).Focus = CreateRadioButtons();
count++;
}
if (c.GetType().ToString().Equals("System.Web.UI.WebControls.RadioButton") &&
c.ID == null)
{
}
if (c.GetType().ToString().Equals("System.Web.UI.WebControls.ImageButton") &&
c.ID == null)
{
((ImageButton)c).ImageUrl = @"pictures/close-icon.png";
((ImageButton)c).ID = "Imagebtn" +count.ToString();
((ImageButton)c).Click += new ImageClickEventHandler(_Default_Click);
((ImageButton)c).Click += new ImageClickEventHandler(CreateRadioButtons);
}
if (c.GetType().ToString().Equals("System.Web.UI.WebControls.Label") &&
c.ID == null)
{
((Label)c).Text = count.ToString() + ".";
}
if (c.Controls.Count > 0)
{
IterateThroughChildren(c);
}
}
}
void _Default_Click(object sender, ImageClickEventArgs e)
{
CreateRadioButtons(sender,e);
throw new NotImplementedException();
}
protected void abc_acb( object sender, EventArgs e)
{
}
protected void CreateRadioButtons(object sender, EventArgs e)
{
if (Page.IsPostBack == true)
{
btnAddControl.Visible = true;
m++;
// now, create n TextBoxes, adding them to the PlaceHolder TextBoxesHere
for (int i = 0; i < m; i++)
{
PlaceHolder1.Controls.Add(new RadioButton());
PlaceHolder1.Controls.Add(new TextBox());
PlaceHolder1.Controls.Add(new ImageButton());
LiteralControl literalBreak3 = new LiteralControl("<br />");
PlaceHolder1.Controls.Add(literalBreak3);
LiteralControl literalBreak = new LiteralControl("<br />");
PlaceHolder1.Controls.Add(literalBreak);
LiteralControl literalBreak2 = new LiteralControl("<br />");
PlaceHolder1.Controls.Add(literalBreak2);
}
EventHandler eh = new EventHandler(CreateRadioButtons);
TextBox Mytextbox = new TextBox();
Mytextbox.ID = "123";
Mytextbox.Columns = 90;
Mytextbox.AutoPostBack = true;
Mytextbox.Text = "Click to create another option";
Mytextbox.TextChanged += eh;
//Mytextbox.TextChanged += CreateRadioButtons;
PlaceHolder1.Controls.Add(new RadioButton());
PlaceHolder1.Controls.Add(Mytextbox);
LiteralControl literalBreak4 = new LiteralControl("<br />");
PlaceHolder1.Controls.Add(literalBreak4);
LiteralControl literalBreak5 = new LiteralControl("<br />");
PlaceHolder1.Controls.Add(literalBreak5);
// now, set the Text property of each TextBox
IterateThroughChildren(this);
}
}
protected void CreateTextBoxes(object sender , EventArgs e)
{
btnAddText.Visible = true;
if (Page.IsPostBack == true)
{
n++;
// now, create n TextBoxes, adding them to the PlaceHolder TextBoxesHere
for (int i = 0; i < n; i++)
{
TextBoxesHere.Controls.Add(new Label());
TextBoxesHere.Controls.Add(new TextBox());
TextBoxesHere.Controls.Add(new ImageButton());
LiteralControl literalBreak = new LiteralControl("<br />");
TextBoxesHere.Controls.Add(literalBreak);
LiteralControl literalBreak1 = new LiteralControl("<br />");
TextBoxesHere.Controls.Add(literalBreak1);
}
// now, set the Text property of each TextBox
IterateThroughChildren(this);
}
}
protected void ddlSelectControl_SelectedIndexChanged(object sender, EventArgs e)
{
string a = ddlSelectControl.SelectedValue.ToString();
if (a == "0")
{
CreateRadioButtons(sender, e);
}
else
{
CreateTextBoxes(sender ,e);
}
}
}
>
The solution to get an image button to work on click is this ..
However in my case i am creating the button in CreateRadiobutton so on click the page load function is called therefore the property needs other solution ..