在运行时创建控件的通用函数

Question

I want to add controls to my aspx web form at runtime using C#.
I would like to write a generic function which will create any type of control (Eg: textbox, lable, button etc).

Any ideas please. Thanks BB

Answer 1

I suppose you could do something like this:

public void CreateControl<W>(Func<W> controlConstructor) where W : WebControl
{
         W control = controlConstructor();

         //add control and configure it, etc etc
}

Answer 2

You can do this, as long as the control types you want to use all have a default constructor.

T AddControl<T>() where T : WebControl, new()
{
    T ctrl = new T();
    ...
    return ctrl;
}

Answer 3

Add TextBoxes Control to Placeholder

private void CreateTextBoxes()  
{

      for (int counter = 0; counter <= NumberOfControls; counter++)
      {
          TextBox tb = new TextBox();
          tb.Width = 150;
          tb.Height = 18;
          tb.TextMode = TextBoxMode.SingleLine;
          tb.ID = "TextBoxID" + (counter + 1).ToString();
          // add some dummy data to textboxes
          tb.Text = "Enter Title " + counter;
          phTextBoxes.Controls.Add(tb);
          phTextBoxes.Controls.Add(new LiteralControl("<br/>"));

      }

  }

In CreateTextBoxes method I loop through 'n' numbers of controls that we wants to create dynamically in phTextBoxes placeholder.