本文整理汇总了C#中System.Web.UI.WebControls.ListItemCollection.IndexOf方法的典型用法代码示例。如果您正苦于以下问题：C# ListItemCollection.IndexOf方法的具体用法？C# ListItemCollection.IndexOf怎么用？C# ListItemCollection.IndexOf使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Web.UI.WebControls.ListItemCollection的用法示例。
在下文中一共展示了ListItemCollection.IndexOf方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Methods
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");
}示例2: IndexOfTest
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");
}示例3: ViewState
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");
}示例4: SetSelectedByValue
/// <summary>
/// Set selected item in a dropdownlist by value
/// </summary>
/// <param name="list"></param>
/// <param name="value">Value need select (String)</param>
public static void SetSelectedByValue(System.Web.UI.WebControls.DropDownList list, string value)
{
ListItemCollection lic = new ListItemCollection();
list.SelectedIndex = lic.IndexOf(list.Items.FindByValue(value));
}