Viewstate Viewer

using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Web;

using System.Web.SessionState;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

 

namespace WebUtils {

/// <summary>

/// Summary description for ViewStateViewer.

/// </summary>

public class ViewStateViewer {

public ViewStateViewer() {

//

// TODO: Add constructor logic here

//

}

public void GetPageControlsViewState() {

System.Web.UI.HtmlControls.HtmlGenericControl VSHtml = new System.Web.UI.HtmlControls.HtmlGenericControl();

if ( ((Page)HttpContext.Current.Handler).Request.Form["__VIEWSTATE"] != null) {

string vsInput = ((Page)HttpContext.Current.Handler).Request.Form["__VIEWSTATE"].Replace("\n", "").Replace("\r", "");

object vsObject = new LosFormatter().Deserialize(vsInput);

// -Triplet.First

// Get Page view state - the First object in the first Triplet

VSHtml.InnerHtml = "<b>Page Data : </b><br>" + ParseViewState(((Triplet)vsObject).First,1);

// -Triplet.First - Page hash value

// -Triplet.Second

// .First(Pair)

// .First(ArrayList) - keys

// .Second(ArrayList)- values

// get the secound object of the first triplet, if the first object of that object is pair

// it holds user viewstate. the first element in the pair is arraylist of keys and the second element in the pair

// is the arraylist of values.

Triplet Second = (Triplet)((Triplet)vsObject).Second;

if (Second.First is System.Web.UI.Pair) {

System.Web.UI.Pair oPair = (System.Web.UI.Pair)Second.First;

System.Collections.ArrayList oKeys = (System.Collections.ArrayList)oPair.First;

System.Collections.ArrayList oVals = (System.Collections.ArrayList)oPair.Second;

VSHtml.InnerHtml += "<br><b> User ViewState : </b><BR>";

for(int i = 0; i<oKeys.Count; i++) {

VSHtml.InnerHtml += "\t Key=" + oKeys[i].ToString () + " Value=" + oVals[i].ToString () + "<br>";

}

}

// -Triplet.First - Page hash value

// -Triplet.Second

// .First(Pair)

// .First(ArrayList) - keys

// .Second(ArrayList)- values

// .Third(ArrayList)

// [X](Triplet)

// .Second(ArrayList) - array that holds the control

// Position in Form controls

// collection.

// .Third(ArrayList) - array that holds the viewstate

// for every control from the upper

// array.

// get object list. first we get the third object that contains array of triplets

ArrayList oArrObjectsAndData = (ArrayList)Second.Third;

// loop thrhogou the array triplet

for (int iObjAndData=0; iObjAndData < oArrObjectsAndData.Count ; iObjAndData++) {

// get the triplet second and third objects that contain list of control location in the form

// controls collection and the match entry in the third object contain the control ViewState.

Triplet oTripControls = (Triplet)oArrObjectsAndData[iObjAndData];

ArrayList oArrObjects = (ArrayList)oTripControls.Second;

ArrayList oArrData = (ArrayList)oTripControls.Third;

for(int iCont =0; iCont < oArrObjects.Count; iCont++) {

// get the control ID

string ContID = GetForm().Controls[(int)oArrObjects[iCont]].ID;

// Get the control ViewState.

Triplet oTrip = (Triplet)oArrData[iCont];

VSHtml.InnerHtml += "<br><b>" + ContID + " : </b><BR>" + ParseViewState(oTrip ,5);

}

}

VSHtml.Visible = true;

GetForm().Controls.Add (VSHtml);

}

}

private Control GetForm() {

System.Collections.IEnumerator oEnum = ((Page)HttpContext.Current.Handler).Controls.GetEnumerator ();

while(oEnum.MoveNext()) {

if (oEnum.Current is System.Web.UI.HtmlControls.HtmlForm ) {

return ((System.Web.UI.HtmlControls.HtmlForm )oEnum.Current);

}

}

return null;

}

private string tabs(int Level) {

string tabs = "";

for (int i =0;i < Level; i++) {

tabs += "-";

}

return tabs;

}

 

private string ParseViewState(object ViewState, int Level) {

if (ViewState == null) {

return ItemViewState(tabs(Level-1) , "null");

}

else if (ViewState.GetType() == typeof(System.Web.UI.Triplet)) {

string children = ParseViewState((Triplet) ViewState, Level);

return NodeViewState(tabs(Level-1) + "Triplet", tabs(Level-1) + children);

}

else if (ViewState.GetType() == typeof(System.Web.UI.Pair)) {

string children = ParseViewState((Pair) ViewState, Level);

return NodeViewState(tabs(Level-1) + "Pair", tabs(Level-1) + children);

}

else if (ViewState.GetType() == typeof(System.Collections.ArrayList)) {

string children = ParseViewState((IEnumerable) ViewState, Level);

return NodeViewState(tabs(Level-1) + "ArrayList", tabs(Level-1) + children);

}

else if (ViewState.GetType().IsArray) {

string children = ParseViewState((IEnumerable) ViewState, Level);

return NodeViewState(tabs(Level-1) +"Array", tabs(Level-1)+ children);

}

else if (ViewState.GetType() == typeof(System.String)) {

return ItemViewState(tabs(Level-1) , ViewState.ToString());

}

else if (ViewState.GetType().IsPrimitive) {

return ItemViewState(tabs(Level-1) , ViewState.ToString());

}

else {

return ItemViewState(tabs(Level-1) , ViewState.GetType().ToString());

}

}

private string ParseViewState(Triplet ViewState, int Level) {

string first = ParseViewState(ViewState.First, Level + 1);

string second = ParseViewState(ViewState.Second, Level + 1);

string third = ParseViewState(ViewState.Third, Level + 1);

return tabs(Level-1) + first + second + third;

}

private string ParseViewState(Pair ViewState, int Level) {

string first = ParseViewState(ViewState.First, Level + 1);

string second = ParseViewState(ViewState.Second, Level + 1);

return tabs(Level-1) + first + second;

}

private string ParseViewState(IEnumerable ViewState, int Level) {

string items = "";

foreach (object item in ViewState) {

items += ParseViewState(item, Level + 1);

}

return tabs(Level-1) + items;

}

private string NodeViewState(string Item, string Children) {

return

@"<div>" + Item + @"<div style='display: block;'>" +

Children + @"</div></div>";

}

private string ItemViewState(string Item) {

return "<div>" + HttpContext.Current.Server.HtmlEncode(Item) + "</div>";

}

private string ItemViewState(string tabs, string Item) {

return "<div>" + tabs + ((Page)HttpContext.Current.Handler).Server.HtmlEncode(Item) + "</div>";

}

}

}

 

//start viewer

//WebUtils.ViewStateViewer oVSV = new WebUtils.ViewStateViewer();

//oVSV.GetPageControlsViewState();

Debugging Design Time Code

To debug deign time code, you will need two instances of Visual Studio.NET - one for performing design time actions and the other for performing debugging operations. 

 

1. Start Visual Studio .NET and open the project that contains the controls and the associated design time classes that you want to debug.

 

2. Bring up the property pages for the project.  Under configuration Properties in the left pane, click Debugging.  In the right pane, under Start Action, set Debug Mode to Program and set Start Application to devenv.exe (if devenvx.exe is not included in the path environment variable of your computer, you will need to provide the full path).  These two properties will cause the debugger to launch a new instance of Visual Studio .NET when the debugger is started.

 

3. Set breakpoints in your code, and start the debugger via the Debug menu or by pressing F5

 

4. A second instance of Visual Studio .NET will now appear on your screen.  In this instance, create a new ASP.NET web application and add a reference to the debug version of the projects that contains the code you want to debug.

 

5. In the web application in the second instance of Visual Studio .NET, drag a control from the Toolbox onto the page.  The debugger will pause as soon as it hits the first breakpoint in your code.  If you have set a breakpoint in the designer for the control, the debugger will pause as soon as the control is dropped on the design surface.

 

6.  You can now perform normal debugging operations in the first instance of Visual Studio .NET

Collection and Object Ordering

http://www.c-sharpcorner.com/Code/2002/June/CollectionObgOrdering.asp

 

How does one determine if a webcontrol is being displayed in the designer or on a page?

Use the Site.DesignMode property as follows:

if ((Site != null) && (Site.DesignMode))

_designTime = true;

Else

_designTime = false;