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sunflower
Asked: 2020-03-10 10:50:14 +0800 CST 2020-03-10 10:50:14 +0800 CST

Pass the value of a textbox from one webform to another? ASP .NET C#

  • 772

I have a webform1 in which I have a sem.Text textbox. Here is the code to pass that

value to a second webform

private string semana_x;
    public string semana
    {
        get
        {
                return semana_x;                
        }
       set
        {
         semana_x = value;
         this.sem.Text = value;
        }
    }


    protectedvoid b_Click(object sender, EventArgs e)
    {
        Response.Redirect("webf2.aspx?semana=" + semana);
    }

web form 2

//aqui recibo el valor del webf1 y lo convierto a int

int valor;
int.TryParse(Request.QueryString["semana"], out valor);
//para compararlo con un campo de BD

SqlCommand cmd = new SqlCommand("SELECT * from tabla where semana="+valor+",con);
//y mostrar todo en un gridview

SqlDataAdapter da = newSqlDataAdapter(cmd);
            DataTable dt = newDataTable();
            da.Fill(dt);
           gridview1.Visible = true;
           gridview1.DataSource = dt;
           gridview1.DataBind();
         con.Close();
        }

the problem is that when I write the number in the texbox it doesn't show me anything in the table and my

link appears like this: localhost:49236/Project/webf2.aspx?week=

but if I add a number at the end

link like this: webf2.aspx?week=48<-- like this, and if it shows me the data in the gridview

I hope you can help me

Thank you

Cheers

c#

2 Answers

  1. Best Answer

    For everything we talked about in the comments, the values ​​entered in your webform are not being passed to your class.

    Your property should be something like this:

    private string semana_x;
public string semana
{
    get
    {
        return semana_x;                
    }
   set
    {
        semana_x = value;
    }
}

    Somewhere, you should load that value into that property. Just as an example, let's assume that we do it on click (something that doesn't make much sense, because if we do it there, let's send it directly)

    protectedvoid b_Click(object sender, EventArgs e)
{
    semana = this.sem.Text;
    Response.Redirect("webf2.aspx?semana=" + semana);
}

    You are thinking something wrong if you built the property the way you had built it. Review concepts about that.

    • 3

  2. You can also send it in one session and retrieve it in the next destination.

    protectedvoid b_Click(object sender, EventArgs e)
{
    Session["variable"] = semana;
    Response.Redirect("webf2.aspx);
}

    var semana = Session["variable"];
    • 2