hi
 i copied these codes from "Wrox-Professional Web Parts and Custom Controls with ASP.NET" to my cs.File
protected override void CreateChildControls()
    {
        base.CreateChildControls();
        //LiteralControl=represent html elements,html and other strings in asp.net page that don't requared procesing on the server
        LiteralControl lt;
        System.Web.UI.WebControls.TextBox txt = new TextBox();
        lt = new LiteralControl("<b>Value: ");
        this.Controls.Add(lt);

        txt.Text = "Hello,world";
        txt.ID = "txtInput";
        this.Controls.Add(txt);

        lt = new LiteralControl("</b>");
        this.Controls.Add(txt);
}
but , i saw this error:
Control 'txtInput' of type 'TextBox' must be placed inside a form tag with runat=server


Why?

These are the steps to make you learn that how can you add run time controls with different values.

First when You created
 lt = new LiteralControl("<b>Value: "); means you are instantiating a new literal control

Second
 lt = new LiteralControl("</b>");
        this.Controls.Add(txt);
is to show you that you can change values dynamically

If you want to add another literal control then declare another object name such as
Literal Control obj = new literal COntrol();
obj.text="&lt value";


Thanks
neha

You may have simply missed out the <form runat=server> tag as well. That error message means the controls you have placed on the page aren't wrapped between <form runat=server> and </form> tags. ASP.Net controls need the runat=server element to function properly if they are to run on the server rather than the client.

Steve

"I will prepare and one day my chance will come."