button onclick issue with placeholders

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I want to make like dynamic control generation and I managed to put my controls on placeholders .the problem I get when I tried to get info back from a control , since it won't "see" the controls in the handler .

i.e.
in test.aspx

<asp:PlaceHolder ID="PlaceHolder1" runat="server">
<asp:PlaceHolder ID="PlaceHolder2" runat="server">

in code behind the page

protected void Page_Load(object sender, EventArgs e){
TextBox txt = new TextBox();
Button btn = new Button();
btn.OnClientClick = "button_click";
//btn.Attributes.Add("onClick","button_click"); I tried this way , yet didn't work 
btn.Attributes.Add("runat","server");
PlaceHolder1.Controls.Add(txt);
PlaceHolder1.Controls.Add(btn);}

and the handler is :

protected void button_click(Object sender , EventArgs args){
string str = txt.Text; // I don't know if this would work , cuz this method didn't run onclick
 PlaceHolder2.Controls.Add(new LiteralControl("intered :"+str));
}

Posted 4-Jul-11 3:02am

fresh_girl

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Comments

Timberbird 4-Jul-11 9:12am

Have you tried btn.Click += new EventHandler(button_click); ?

2 solutions

Solution 2

First of all "OnClientClick" mean you are trying to call client side jscript method.
So you need to registered click event with event handler as "Timberbird" commentes.
Go with this article just change linkbutton with Button control:
http://aquesthosting.headtreez.com/doc/3309d107-bd26-4d78-ad38-7a82933d5c50[^]

Posted 4-Jul-11 3:17am

Parwej Ahamad

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

fresh_girl · Accepted Answer · 2011-07-04T03:15:00

Solution 1

the wrong thing is type of event I'm using ^^'
it's for javascript actions
to do my work I used

btn.click += EventHandler(button_click);

and it works

as for the text control ,

TextBox tmp = (TextBox) PlaceHolder1.findControl("input");

where "input" is the text box id

Posted 4-Jul-11 3:15am

fresh_girl

Updated 4-Jul-11 3:18am

v2

Comments

Parwej Ahamad 4-Jul-11 9:24am

Because you didn't provide TextBox id so you will not able to find Textbox control.
Second approach is, if you are adding more than one control in Place Holder so it's better approach is, iterate all child control under PlaceHolder using PlaceHolder1.Controls property.
And make sure provide unique id for all child controls.

button onclick issue with placeholders

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button onclick issue with placeholders

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