By default hide textbox show on click button

Property of Textbox :-Enabled="false"

 

On Button click

 

Textboxid.Enabled=true;

 

 

 

Example:

 

aspx page:

 

UserName
Password
	Forgto Password ?
	onclick="btn_submit_Click" />

 

 

 

 

.aspx.cs

 

 

protected void btn_submit_Click(object sender, EventArgs e)
{
try
{
Txt_Name.Enabled= true;
Txt_Password.Enabled= true;
}
catch(Exception err)
{
Response.Write(err.Message);
}
}