Dynamically create a button in aspx page - html

Question

i want to make some elements in my asp form like below, unfortunately input button dose not work and "btnsave_ServerClick" dose not fire!
any body has idea?
<div class="clear"></div>
<%
string matn="";
System.Data.DataTable ds = new System.Data.DataTable();
try
{
// databaselinker is a class which is connected to the database
databaselinker link = new databaselinker();
// id is QueryString parameter
ds = link.selectplan(id);
}
catch (Exception Ex) { }
int i=0;
foreach (System.Data.DataRow DRow in ds.Rows)
{
TableRow tRow = new TableRow();
matn += "<div class='frame' id='frame" + DRow["PlanID"] + "'>";
matn += " name <input id='Text1' type='text' /> * ";
matn += "</br>";
matn += "Family <input id='Text2' type='text' /> * ";
matn += "<input id='Button1' type='button' value='Save' runat='server' onServerClick='btnsave_ServerClick' />";
matn += "</div>";
i++;
}
Response.Write(matn);
%>

Answer 1

When you type that button as string on this line
matn += "<input id='Button1' type='button' value='Save' runat='server' onServerClick='btnsave_ServerClick' />";
the asp.net did not know anything about that button, even if you have place the runat= is still a string.
when you have render that string using the
Response.Write(matn);
asp.net compile the response.write but NOT compile the string that you render of.
And that is the reason that is not working and not fire.
To make it work you need to create it dynamically.
Some examples on how to do it:
HOW TO: Dynamically Create Controls in ASP.NET by Using Visual C# .NET
Dynamic Controls Made Easy in ASP.Net
Persistent dynamic control in ASP.Net