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1 - Página ASP.NET Web
<form runat="server">
Criar quantas TextBoxes?
<asp:textbox runat="Server" id="txtTBCount" Columns="3" />
<asp:RangeValidator runat="server" ControlToValidate="txtTBCount"
MinimumValue="1" MaximumValue="10" Type="Integer"
ErrorMessage="Escolha um número entre 1 e 10" />
<br />
<asp:button runat="server" Text="Criar TextBoxes"
OnClick="CreateTextBoxes" />
<p>
<asp:PlaceHolder runat="server" id="TextBoxesHere" />
</form>
2 - Esta function ASP.NET CreateTextBoxes irá criar na tela
void CreateTextBoxes(Object sender, EventArgs e)
{
int n = Int32.Parse(txtTBCount.Text);
// now, create n TextBoxes, adding them to the PlaceHolder TextBoxesHere
for (int i = 0; i < n; i++)
{
TextBoxesHere.Controls.Add(new TextBox());
}
// now, set the Text property of each TextBox
IterateThroughChildren(this);
}
3 - Confirma que o controle criado é um TextBox
void IterateThroughChildren(Control parent)
{
foreach (Control c in parent.Controls)
{
if (c.GetType().ToString().Equals("System.Web.UI.WebControls.TextBox")
&& c.ID == null)
{
// ...do something...
}
if (c.Controls.Count > 0)
{
IterateThroughChildren(c);
}
}
}
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