How to know which button called the page?

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1

I have a page with 3 buttons that call the same page and wanted to know if it has how to see which of the 3 buttons called the page. Are buttons Web Forms.

What I did was put them to add a value to a Hidden field to find out on the other page who called.

protected void Button1_Click1(object sender, EventArgs e)
{
    hdfLivroEscolhido.Value = "3";
}

protected void btnLivro1_Click(object sender, EventArgs e)
{
    hdfLivroEscolhido.Value = "1";
}

protected void btnLivro2_Click(object sender, EventArgs e)
{
    hdfLivroEscolhido.Value = "2";
}
c# asp.net

  • Add to your question the code surrounding the 3 buttons and what exactly they do!

  • Can be passed as querystring, and on the page called would have to pick up this value on pageload

  • If you want to get the value on another page, why not save the value on a Session?

2 answers

2

it is possible to use the sender to perform the identification by converting the object to a button and using the . property.

Button BotaoClicado = sender as Button;
        string Nome = BotaoClicado.Name;

0

Hello, if I understand correctly, you are redirecting from one page to another after pressing any of the buttons, correct? Then try the following:

// Na página com seus botões
protected void Button1_Click1(object sender, EventArgs e)
{
    Response.Redirect("UrlDaSuaPagina?btnValue=3");
}

protected void btnLivro1_Click(object sender, EventArgs e)
{
    Response.Redirect("UrlDaSuaPagina?btnValue=1");
}

protected void btnLivro2_Click(object sender, EventArgs e)
{
    Response.Redirect("UrlDaSuaPagina?btnValue=2");
}

// E em sua página para qual foi redirecionado
public void Page_Load(object sender, EventArgs e)
{
    string botao = Request.QueryString["btnValue"];
    // apenas informativo
    minhaLabel.Text = botao;
    // sua lógica para o botão que foi apertado
}

With this you will be able to identify which button triggered the redirect to your page.

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