ListItemCollection.FindByText(String) 方法

定义

命名空间:

System.Web.UI.WebControls

程序集:

System.Web.dll

搜索集合中其 ListItem 属性等于指定文本的 Text。

public:
 System::Web::UI::WebControls::ListItem ^ FindByText(System::String ^ text);

public System.Web.UI.WebControls.ListItem FindByText (string text);

member this.FindByText : string -> System.Web.UI.WebControls.ListItem

Public Function FindByText (text As String) As ListItem

参数

text

String

要搜索的文本。

返回

ListItem

包含 text 参数指定的文本的 ListItem。

示例

ListItem myListItem = SearchType.SelectedItem;
ListItem crItem = null;
String searchText = TextBox1.Text;
if(myListItem.Value == "Name")
{
    if(TextBox1.Text != "")
    {
        String searchSubfir = searchText.Substring(0,1);
        String searchSubsec = searchText.Substring(1);
        searchText = searchSubfir.ToUpper()+searchSubsec.ToLower();

        // Search by country or region name.
        crItem = ItemCollection.FindByText(searchText);
    }
}
else
{
    // Search by country or region code.
    crItem = ItemCollection.FindByValue(searchText.ToUpper());
}

String str = "Search is successful. Match is Found.<br />";
str =str + "The results for search string '" + searchText + "' are:<br />";
str = str + "the country or region code is " + crItem.Value + "<br />";
str = str + "the country or region name is " + crItem.Text;

// Add the string to the label.
Label1.Text = str;

  Dim myListItem As ListItem = SearchType.SelectedItem
  Dim crItem As ListItem 
  Dim searchText As String  = TextBox1.Text
  If(myListItem.Value = "Name") Then
      If(TextBox1.Text <> "" ) Then        
          Dim searchSubfirst As String = searchText.Substring(0,1)
          Dim searchSubsecond As String = searchText.Substring(1)
          searchText = searchSubfirst.ToUpper()+searchSubsecond.ToLower()
          ' Search by country or region name.                       
          crItem = ItemCollection.FindByText(searchText)    
      End If            
  Else
      'Search by country or region code.
      crItem = ItemCollection.FindByValue(searchText.ToUpper())
  End If
  
  Dim str As String  = "Search is successful. Match is Found.<br />"
  str = str & "The results for search string '" & searchText & "' are:<br />"
  str = str & "the country or region code is: " & crItem.Value & "<br />"
  str = str & "the country or region name is: " & crItem.Text
  ' Add the string to the label.
  Label1.Text = str

注解

FindByText使用此方法搜索集合中的属性ListItemText，该属性等于参数指定的text文本。 此方法执行区分大小写且不区分区域性的比较。 此方法不执行部分搜索或通配符搜索。 如果使用此条件在集合中找不到项， null 则返回。

另请参阅

• FindByValue(String)
• ListItem
• Text