C# asp.net textbox.text not setting?

Question

In a parentclass I call a function defined in the child class and parse the values I need through.

ParentClass.ascx

protected void Page_Load 
{       
  if(info != null) 
    ControlIWantToGetInformationTo.SetInfo(info);  
}

ChildClass.ascx

public void SetInfo(Info info)  
{  
  someTextBox.Text = info.TheVariableWithin.ToString(); 
}

What I can gather is that that ParentClass(control) loads and does the method, but when the ChildClass(control) page loads it resets the previously set variable to null how can I work around this?

How are you setting the text value inside the control? You have to make sure the code is run in the correct order, but this can be very complex in ASP.Net webforms due to the complex page lifecycle rules. — Jonas Høgh
– Jonas Høgh, Commented Aug 19, 2011 at 10:41
Ahh sounds like the issue I am having :'( are you saying I have to break down everything??? — Anicho
– Anicho, Commented Aug 19, 2011 at 10:43
A quick fix could be to move the code you currently have in Page_Load to the PreRender event, which occurs very late in the lifecycle. But this is not a very good solution, as it breaks down as soon as you have to rely on using PreRender inside the control too. — Jonas Høgh
– Jonas Høgh, Commented Aug 19, 2011 at 10:47

Pabuc · Accepted Answer · 2011-08-19 11:06:42Z

2

Use Session. In your method, instead of setting the values of your controls, use an object and fill the properties of your object and save it to Session when you are done. In your childclass, load your values from the object which you saved into Session.

//Parentclass
protected void Page_Load 
{       
  if(info != null) 
  {
    MyControlObject myObj = new MyControlObject();
    myObj.prop1 = txt1.Text;
    myObj.prop2 = txt2.Text;
    Session["myObj"] = myObj;
  }
} 

//Childclass
public void SetInfo(Info info)  
{  
  MyControlObject myObj = Session["myObj"] as MyControlObject;
  if(myObj != null)
  {
    //assign the values to your controls
    Session["myObj"] = null; //when you are done, clear the session.
  }
}

edited Aug 19, 2011 at 11:06

answered Aug 19, 2011 at 10:48

Pabuc

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3 Comments

Anicho Over a year ago

How do I destroy session once its been created and used??

Anicho Over a year ago

Thanks +1 because solution works, will wait till GMT +0 midnight time before I accept just incase someone answer with an answer avoiding sessions and PreRender Event.

Pabuc Over a year ago

I had the same problem and would love to see a better solution than this one. This was what I did.

Rasel · Accepted Answer · 2011-08-19 10:40:04Z

0

I think you are facing problem for case sensitivity.

try this

someTextBox.Text = info.TheVariableWithin.ToString();

answered Aug 19, 2011 at 10:40

Rasel

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1 Comment

Anicho Over a year ago

Thats just a typo sorry fixing in question now.

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