protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//ViewState["test"] = "test";
//TestStr1 = "TestStr1";
System.Web.UI.StateBag _StateBag = new StateBag();
_StateBag["Test0"] = 0;
var test = _StateBag["Test0"].ToString();
bool isdirty = _StateBag.IsItemDirty("Test0");
_StateBag["Test0"] = 0;
isdirty = _StateBag.IsItemDirty("Test0");
this.TrackViewState();
//StateBag.TrackViewState();
_StateBag["Test0"] = 1;
isdirty = _StateBag.IsItemDirty("Test0");
}
else
{
//string test = ViewState["test"] == null ? "" : ViewState["test"].ToString();
//string test = TestStr1;
System.Web.UI.StateBag _StateBag = new StateBag();
_StateBag["Test0"] = 2;
bool isdirty = _StateBag.IsItemDirty("Test0");
}
}
public static bool IsDirty(this StateBag stateBag)
{
foreach (string key in stateBag.Keys)
{
if (stateBag.IsItemDirty(key))
{
return(true);
}
}
return(false);
}
// Implement the SaveViewState method. If the StateBag
// that stores the MyItem class's view state contains
// a value for the message property and if the value
// has changed since the TrackViewState method was last
// called, all view state for this class is deleted,
// using the StateBag.Clear method,and the new value is added.
object IStateManager.SaveViewState()
{
// Check whether the message property exists in
// the ViewState property, and if it does, check
// whether it has changed since the most recent
// TrackViewState method call.
if (!((IDictionary)_viewstate).Contains("message") || _viewstate.IsItemDirty("message"))
{
_viewstate.Clear();
// Add the _message property to the StateBag.
_viewstate.Add("message", _message);
}
return(((IStateManager)_viewstate).SaveViewState());
}
public void Deny_Unrestricted()
{
StateBag bag = new StateBag(true);
Assert.IsNotNull(bag.Add("key", "value"), "Add");
Assert.AreEqual(1, bag.Count, "Count");
Assert.IsNotNull(bag.GetEnumerator(), "GetEnumerator");
bag.SetItemDirty("key", true);
Assert.IsTrue(bag.IsItemDirty("key"), "IsItemDirty");
bag.Remove("key");
bag.Clear();
bag["key"] = "value";
Assert.IsNotNull(bag["key"], "this[string]");
Assert.IsNotNull(bag.Keys, "Keys");
Assert.IsNotNull(bag.Values, "Values");
bag.SetDirty(true);
}
public bool IsItemDirty(string key)
{
return(viewState.IsItemDirty(key));
}