How to add the events for web controls which are created dynamically

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My web controls are radio button - checkedchanged event
drop down list- selectedindexchanged event.

Please any one help me.

Posted 23-Oct-11 18:47pm

sandhya.T 2011

Updated 23-Oct-11 18:57pm

Nueman

v2

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Prerak Patel · Answer 1 · 2011-10-23T18:55:00

C#

Page_Load()
{

            RadioButton b = new Button();

            b.ID = "b1" //whatever 
            b.Text = "Option1"; //whatever
            b.AutoPostBack = true;
            b.CheckedChanged += new EventHandler(b_CheckedChanged); //handler

}



         void b_CheckedChanged(object sender, EventArgs e)
        {
            //whatever

        }

udusat13 · Answer 2 · 2011-10-23T18:58:00

Solution 2

Hi,

you can declare selectedindexchanged event like this:

ddlFilter.SelectedIndexChanged += new EventHandler(ddl2_SelectedIndexChanged);
ddlFilter.AutoPostBack = true;

Posted 23-Oct-11 18:58pm

udusat13

Comments

sandhya.T 2011 24-Oct-11 1:01am

but im getting an error as
cannot overload the methods

udusat13 24-Oct-11 1:56am

check following code

protected void Page_Load(object sender, EventArgs e)
{
DropDownList ComboBox = new DropDownList();
ComboBox.ID = "ComboBox";
ComboBox.AutoPostBack = true;

ComboBox.Items.Add(new ListItem("Year: 2010", "2010"));
ComboBox.Items.Add(new ListItem("Year: 2011", "2011"));
ComboBox.Items.Add(new ListItem("Year: 2012", "2012"));
ComboBox.Items.Add(new ListItem("Year: 2013", "2013"));
ComboBox.Items.Add(new ListItem("Year: 2014", "2014"));

ComboBox.SelectedIndexChanged += new EventHandler(Dynamic_Method);

this.form1.Controls.Add(ComboBox);
}
protected void ddlFilter_SelectedIndexChanged(object sender, EventArgs e)
{
Response.Write(Request.Form["ComboBox"]);
}
private void Dynamic_Method(object sender, EventArgs e)
{
//Response.Write(((DropDownList)sender).SelectedIndex.ToString());
//Response.Write(Request.Form["ComboBox"]);
DropDownList ComboBox = (DropDownList)sender;
string sSTR = "";
sSTR = "</br>Selected Index: " + ComboBox.SelectedIndex.ToString();
sSTR += "</br>Selected Item: " + ComboBox.SelectedItem.Text.ToString();
sSTR += "</br>Selected Value: " + ComboBox.SelectedItem.Value.ToString();

Label lbl = new Label();
lbl.Text = sSTR;
this.form1.Controls.Add(lbl);
}

sandhya.T 2011 24-Oct-11 2:30am

Thank u
Can u tell me the main aim of these 2 stmts
Response.Write(Request.Form["ComboBox"]);
DropDownList ComboBox = (DropDownList)sender;