public void ViewState()
{
ListItemCollection c;
ListItemCollection c2;
ListItem i;
ListItem i2;
object state;
c = new ListItemCollection();
i = new ListItem("Item 1", "1");
i2 = new ListItem("Item 2", "2");
((IStateManager)c).TrackViewState();
c.Add(i);
c.Add(i2);
Assert.AreEqual(2, c.Count, "V1");
state = ((IStateManager)c).SaveViewState();
c2 = new ListItemCollection();
((IStateManager)c2).LoadViewState(state);
Assert.AreEqual(2, c2.Count, "V2");
Assert.AreEqual("Item 1", c2.FindByText("Item 1").ToString(), "V3");
Assert.AreEqual("Item 2", c2.FindByText("Item 2").ToString(), "V4");
Assert.AreEqual(false, c2.IndexOf(i) == c2.IndexOf(i2), "V5");
}
/// <summary>
/// 在UI控件呈现之前，将DropDownList控件的选择项设为指定的模式。
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Page_PreRender(object sender, EventArgs e)
{
ListItemCollection items = DisplayModeDropdown.Items;
int selectedIndex = items.IndexOf(items.FindByText(_manager.DisplayMode.Name));
DisplayModeDropdown.SelectedIndex = selectedIndex;
}
public ListItemCollection GetMonth2(string selecteditem)
{
ListItemCollection lst = new ListItemCollection();
lst = GetMonth();
lst.IndexOf(lst.FindByValue(selecteditem));
return(lst);
}
}//void DropDownListDisplayMode_SelectedIndexChanged()
/// <summary>Page_PreRender</summary>
/// <remarks>Set the selected item equal to the current display mode.</remarks>
public void Page_PreRender
(
object sender,
EventArgs e
)
{
ListItemCollection items = DropDownListDisplayMode.Items;
int selectedIndex = items.IndexOf(items.FindByText(webPartManager.DisplayMode.Name));
DropDownListDisplayMode.SelectedIndex = selectedIndex;
}//void Page_PreRender()
public void IndexOfTest()
{
ListItemCollection c;
ListItem i;
ListItem i2;
c = new ListItemCollection();
i = new ListItem("Item 1", "1");
i2 = new ListItem("Item 2", "2");
c.Add(i);
c.Add(i2);
i = new ListItem("Item 2", "2");
// test same vs equal
Assert.AreEqual(1, c.IndexOf(i), "IO1");
Assert.AreEqual(1, c.IndexOf(i2), "IO2");
}
public void Methods()
{
ListItemCollection c;
ListItem i;
ListItem i2;
c = new ListItemCollection();
Assert.AreEqual(0, c.Count, "T1");
i = new ListItem("Item 1", "10");
c.Add(i);
Assert.AreEqual(1, c.Count, "T2");
i = new ListItem("This is item 2", "20");
c.Add(i);
Assert.AreEqual(2, c.Count, "T3");
Assert.AreEqual(null, c.FindByText(" is "), "T4");
Assert.AreEqual(i.Text, c.FindByText("This is item 2").Text, "T5");
Assert.AreSame(i, c.FindByText("This is item 2"), "T6");
Assert.AreEqual(1, c.IndexOf(c.FindByText("This is item 2")), "T7");
Assert.AreEqual(1, c.IndexOf(c.FindByValue("20")), "T8");
i = new ListItem("Item 3", "30");
Assert.IsFalse(c.Contains(i), "T9");
c.Add(i);
Assert.IsTrue(c.Contains(i), "T10");
i = new ListItem("Forth", "40");
i2 = new ListItem("Fifth", "50");
c.AddRange(new ListItem[] { i, i2 });
Assert.AreEqual(5, c.Count, "T11");
c.RemoveAt(1);
Assert.AreEqual(4, c.Count, "T12");
Assert.AreEqual(null, c.FindByText("This is item 2"), "T13");
c.Clear();
Assert.AreEqual(0, c.Count, "T13");
}
protected void GenerateModeList(object sender, EventArgs e)
{
WebPartManager _manager = WebPartManager.GetCurrentWebPartManager(Page);
String browserModeName = WebPartManager.BrowseDisplayMode.Name;
DropDownListModes.Items.Clear();
// Fill the drop-down list with the names of supported display modes
foreach (WebPartDisplayMode mode in _manager.SupportedDisplayModes)
{
String modeName = mode.Name;
if (mode.IsEnabled(_manager))
{
ListItem item = new ListItem(modeName, modeName);
DropDownListModes.Items.Add(item);
}
}
// Select current mode
ListItemCollection items = DropDownListModes.Items;
int selectedIndex = items.IndexOf(items.FindByText(_manager.DisplayMode.Name));
DropDownListModes.SelectedIndex = selectedIndex;
}
