Get one page Control Name and values from other page using Reflection

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I want to get control name and values of one page (say Page1.aspx) from another page (say page2.aspx) using reflection.

I have followed the code given in http://www.codeproject.com/Articles/17792/Get-Control-Properties-at-runtime-using-Reflection

C#

protected void Button1_Click1(object sender, EventArgs e) 

{     
    DisplyDetails(this);     
}

In the above code, we invoke the DisplyDetails() method passing the object of control class by "this" reference object in Button Click event handler.

C#

private void DisplyDetails(Control control)     
{     
  foreach (Control controls in this.form1.Controls)     
  {     
     string controlId = controls.ID;     
     Response.Write(controlId);     
     Response.Write("<br>");     
     Type controlType = controls.GetType();     
     PropertyInfo[] properties = controlType.GetProperties();     
     foreach (PropertyInfo controlProperty in properties)     
     {     
        if (controlProperty.Name == "Text" && controlProperty.PropertyType == typeof(String))    
        {    
          string propertyValue = GetPropertyValue(controlProperty.Name, controls);     
          Response.Write(propertyValue);     
          Response.Write("<br><br>");     
        }    
     }     
   }     
 }

It's working fine when i have the method(DisplyDetails)in Page1.aspx but not working while calling from Page2.aspx.

Is there any other way to achieve it. I just want to sent the page name as parameter and it will return its Control name and values.

Posted 3-Nov-14 5:38am

VigneshKumar957

Updated 3-Nov-14 7:04am

DamithSL

v2

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Comments

Sergey Alexandrovich Kryukov 3-Nov-14 12:36pm

Why doing so? The purpose, please.
—SA

syed shanu 3-Nov-14 21:47pm

i think you need to check this line "this.form1.Controls" in foreach loop

1 solution

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Sinisa Hajnal · Answer 1 · 2014-11-04T03:24:00

The method DisplyDetails you provide is private and therefore available only to Page1

If you want to call it from Page2, you should either make it public and instantiate page1 in page2 or make it static (but then you cannot use instance variables).

I would suggest pulling the method out in one of business logic classes and calling it from there:

C#

Public Class DetailManager 
private Control page;

DetailManager(Control page){
    this.page = page;
}
{
    public List<control> DisplayDetails () {}
}</control>

in page(s) code

C#

DetailManager dm = new DetailManager(this)
dm.DisplayDetails()

You should return collection of controls with their properties, rather then writing directly on the output in the page and returning void.

Also, it seems you're simply getting Text from the controls that have that property...why not enumerate the controls and simply ask for their Text property instead of getting all properties. There are recursive functions to go through all your controls and get only those of given type. Like this:[^]

C#

public static IList<T> GetAllControlsRecusrvive<T>(Control control) where T :Control
{
    var rtn = new List<T>();
    foreach (Control item in control.Controls)
    {
        var ctr = item as T;
        if (ctr!=null)
        {
            rtn.Add(ctr);
        }
        else
        {
            rtn.AddRange(GetAllControlsRecusrvive<T>(item));
        }

    }
    return rtn;
}

If this helps, please take time to accept the solution. Thank you.