Question

In C# i would like to access textbox from page directly without sending it as variable to the class for example

file class.cs code

public class A {
    private string dosomething {
        string text;
        text = textbox1.text; 
        // textbox1 exists in, for example, default.aspx, and I need it's 
        // value in the class after some event occurred - let's say there 
        // is button and it was clicked 
    return text;
    }
}

default.aspx.cs code

protected void Button1_Click(object sender, EventArgs e) {
    A a = new A(); 
    // I need when this button clicked to fill the variable within
    // the class with the data given from the textbox within this page
}

This is what I’ve come up with, but I’m not sure if I’m taking the right path using a getter and setter this way:

private TextBox TextBox1 = new TextBox();
public string  settext {
    get { return TextBox1.Text; }
    set { TextBox1.Text = value;}
}

but I always get a NullReferenceException was unhandled message.

Answer 1

i found what i’m looking for and it’s working like charm i will put the way i did and the link for the article helped me to figure out how to solve it
http://codebetter.com/jefferypalermo/2004/09/01/asp-net-2-0-master-pages-changes-the-pages-control-hierarchy-level-300/
in case using master page same idea for without master page in my case i was using master page and i tested it on both with and without working fine

    private TextBox  gettextbox ( )
    {

        //without master page
           /*System.Web.UI.Page Default = (System.Web.UI.Page)System.Web.HttpContext.Current.Handler;
             TextBox TextBox1 = (TextBox)Default[0].FindControl("TextBox1");*/

        //with master page
       System.Web.UI.Page Default = (System.Web.UI.Page)System.Web.HttpContext.Current.Handler;
   ContentPlaceHolder cph = Default.Controls[0].FindControl("ContentPlaceHolder1") as ContentPlaceHolder;
           TextBox Textbox1 = (TextBox)cph.FindControl("TextBox1");
           return Textbox1;
    }