ListBox.SelectedIndices 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

取得集合，其中包含 ListBox 中所有目前選取項目之以零起始的索引。

public:
 property System::Windows::Forms::ListBox::SelectedIndexCollection ^ SelectedIndices { System::Windows::Forms::ListBox::SelectedIndexCollection ^ get(); };

[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.ListBox.SelectedIndexCollection SelectedIndices { get; }

[<System.ComponentModel.Browsable(false)>]
member this.SelectedIndices : System.Windows.Forms.ListBox.SelectedIndexCollection

Public ReadOnly Property SelectedIndices As ListBox.SelectedIndexCollection

屬性值

ListBox.SelectedIndexCollection

ListBox.SelectedIndexCollection，含有控制項中目前選取項目的索引。 如果目前並未選取任何項目，將傳回空白的 ListBox.SelectedIndexCollection。

屬性

BrowsableAttribute

範例

下列程式碼範例示範如何使用 FindString 方法來搜尋 專案中的所有 ListBox 搜尋文字範例。 此範例使用 方法的版本 FindString ，可讓您指定開始搜尋索引，以便從中持續搜尋所有專案 ListBox 。 此範例也會示範如何判斷 FindString 方法在到達專案清單底部之後，如何從清單頂端開始搜尋，以防止遞迴搜尋。 在 中找到 ListBox 專案之後，就會使用 SetSelected 方法選取這些專案。

private:
   void FindAllOfMyString( String^ searchString )
   {
      // Set the SelectionMode property of the ListBox to select multiple items.
      listBox1->SelectionMode = SelectionMode::MultiExtended;

      // Set our intial index variable to -1.
      int x = -1;

      // If the search string is empty exit.
      if ( searchString->Length != 0 )
      {
         // Loop through and find each item that matches the search string.
         do
         {
            // Retrieve the item based on the previous index found. Starts with -1 which searches start.
            x = listBox1->FindString( searchString, x );

            // If no item is found that matches exit.
            if ( x != -1 )
            {
               // Since the FindString loops infinitely, determine if we found first item again and exit.
               if ( listBox1->SelectedIndices->Count > 0 )
               {
                  if ( x == listBox1->SelectedIndices[ 0 ] )
                                    return;
               }

               // Select the item in the ListBox once it is found.
               listBox1->SetSelected( x, true );
            }
         }
         while ( x != -1 );
      }
   }

private void FindAllOfMyString(string searchString)
{
   // Set the SelectionMode property of the ListBox to select multiple items.
   listBox1.SelectionMode = SelectionMode.MultiExtended;
   
   // Set our intial index variable to -1.
   int x =-1;
   // If the search string is empty exit.
   if (searchString.Length != 0)
   {
      // Loop through and find each item that matches the search string.
      do
      {
         // Retrieve the item based on the previous index found. Starts with -1 which searches start.
         x = listBox1.FindString(searchString, x);
         // If no item is found that matches exit.
         if (x != -1)
         {
            // Since the FindString loops infinitely, determine if we found first item again and exit.
            if (listBox1.SelectedIndices.Count > 0)
            {
               if(x == listBox1.SelectedIndices[0])
                  return;
            }
            // Select the item in the ListBox once it is found.
            listBox1.SetSelected(x,true);
         }
      }while(x != -1);
   }
}

Private Sub FindAllOfMyString(ByVal searchString As String)
   ' Set the SelectionMode property of the ListBox to select multiple items.
   listBox1.SelectionMode = SelectionMode.MultiExtended

   ' Set our intial index variable to -1.
   Dim x As Integer = -1
   ' If the search string is empty exit.
   If searchString.Length <> 0 Then
      ' Loop through and find each item that matches the search string.
      Do
         ' Retrieve the item based on the previous index found. Starts with -1 which searches start.
         x = listBox1.FindString(searchString, x)
         ' If no item is found that matches exit.
         If x <> -1 Then
            ' Since the FindString loops infinitely, determine if we found first item again and exit.
            If ListBox1.SelectedIndices.Count > 0 Then
               If x = ListBox1.SelectedIndices(0) Then
                  Return
               End If
            End If
            ' Select the item in the ListBox once it is found.
            ListBox1.SetSelected(x, True)
         End If
      Loop While x <> -1
   End If
End Sub

備註

對於多重選取範圍 ListBox ，這個屬性會傳回集合，其中包含 中選取的所有專案索引 ListBox 。 針對單一選取範圍 ListBox ，這個屬性會傳回集合，其中包含中唯一選取專案的索引的單 ListBox 一專案。 如需如何操作集合專案的詳細資訊，請參閱 ListBox.SelectedIndexCollection 。

類別 ListBox 提供數種方式來參考選取的專案。 您可以使用 屬性，而不是使用 SelectedIndices 屬性，在單一選取專案中 ListBox SelectedIndex 取得目前選取專案的索引位置。 如果您想要取得 目前在 中 ListBox 選取的專案，而不是專案的索引位置，請使用 SelectedItem 屬性。 此外，如果您想要在多重選取 ListBox 專案中取得所有選取的專案，則可以使用 SelectedItems 屬性。

另請參閱

• SelectedIndex
• SelectedItem
• SelectedItems