DataGrid.Item[] 屬性

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

取得或設定指定儲存格的值。

多載

Item[DataGridCell]	取得或設定指定的 DataGridCell 值。
Item[Int32, Int32]	取得或設定指定資料列和資料行儲存格的值。

Item[DataGridCell]

取得或設定指定的 DataGridCell 值。

public:
 property System::Object ^ default[System::Windows::Forms::DataGridCell] { System::Object ^ get(System::Windows::Forms::DataGridCell cell); void set(System::Windows::Forms::DataGridCell cell, System::Object ^ value); };

public object this[System.Windows.Forms.DataGridCell cell] { get; set; }

member this.Item(System.Windows.Forms.DataGridCell) : obj with get, set

Default Public Property Item(cell As DataGridCell) As Object

參數

cell

DataGridCell

DataGridCell，代表方格中的儲存格。

屬性值

Object

儲存格的值，需輸入為 Object。

範例

下列程式碼範例會藉由宣告 DataGridCell 變數、設定其 RowNumber 和 值，然後先變更，然後傳回指定儲存格的值，來設定及 ColumnNumber 取得儲存格的值。

void SetCellValue( DataGrid^ myGrid )
{
   DataGridCell myCell;
   
   // Use an arbitrary cell.
   myCell.RowNumber = 1;
   myCell.ColumnNumber = 1;
   
   // Change the cell's value using the CurrentCell.
   myGrid[ myCell ] = "New Value";
}

void GetCellValue( DataGrid^ myGrid )
{
   DataGridCell myCell;
   
   // Use and arbitrary cell.
   myCell.RowNumber = 1;
   myCell.ColumnNumber = 1;
   Console::WriteLine( myGrid[ myCell ] );
}

private void SetCellValue(DataGrid myGrid){
   DataGridCell myCell = new DataGridCell();
   // Use an arbitrary cell.
   myCell.RowNumber = 1;
   myCell.ColumnNumber = 1;
   // Change the cell's value using the CurrentCell.
   myGrid[myCell]="New Value";
}
 
private void GetCellValue(DataGrid myGrid){
   DataGridCell myCell = new DataGridCell();
   // Use and arbitrary cell.
   myCell.RowNumber = 1;
   myCell.ColumnNumber = 1;
   Console.WriteLine(myGrid[myCell]);
}

Private Sub SetCellValue(ByVal myGrid As DataGrid)
   Dim myCell As New DataGridCell()
   ' Use an arbitrary cell.
   myCell.RowNumber = 1
   myCell.ColumnNumber = 1
   ' Change the cell's value using the CurrentCell.
   myGrid(myCell)= "New Value"
End Sub
 
Private Sub GetCellValue(ByVal myGrid As DataGrid)
   Dim myCell As New DataGridCell()
   ' Use an arbitrary cell.
   myCell.RowNumber = 1
   myCell.ColumnNumber = 1
   Console.WriteLine(myGrid(myCell))
End Sub

備註

設定此屬性會將 的位置 DataView 變更為指定的資料列。

另請參閱

• CurrentCell
• DataGridCell

Item[Int32, Int32]

取得或設定指定資料列和資料行儲存格的值。

public:
 property System::Object ^ default[int, int] { System::Object ^ get(int rowIndex, int columnIndex); void set(int rowIndex, int columnIndex, System::Object ^ value); };

public object this[int rowIndex, int columnIndex] { get; set; }

member this.Item(int * int) : obj with get, set

Default Public Property Item(rowIndex As Integer, columnIndex As Integer) As Object

參數

rowIndex

Int32

含值資料列之以零起始的索引。

columnIndex

Int32

含值資料行之以零起始的索引。

屬性值

Object

儲存格的值，需輸入為 Object。

例外狀況

ArgumentOutOfRangeException

取得或設定時，rowIndex 超出範圍。

取得或設定時，columnIndex 超出範圍。

範例

下列程式碼範例會在指定的列和索引處列印儲存格所包含的值。

void PrintCellValues( DataGrid^ myGrid )
{
   int iRow;
   int iCol;
   DataTable^ myTable;
   
   // Assumes the DataGrid is bound to a DataTable.
   myTable = dynamic_cast<DataTable^>(dataGrid1->DataSource);
   for ( iRow = 0; iRow < myTable->Rows->Count; iRow++ )
   {
      for ( iCol = 0; iCol < myTable->Columns->Count; iCol++ )
      {
         Console::WriteLine( myGrid[iRow, iCol] );

      }

   }
}

private void PrintCellValues(DataGrid myGrid){
    int iRow;
    int iCol;
    DataTable myTable;
    // Assumes the DataGrid is bound to a DataTable.
    myTable = (DataTable) dataGrid1.DataSource;
    for(iRow = 0;iRow < myTable.Rows.Count ;iRow++) {
       for(iCol = 0;iCol < myTable.Columns.Count ;iCol++) {
          Console.WriteLine(myGrid[iRow, iCol]);
       }
    }
 }

Private Sub PrintCells(ByVal myGrid As DataGrid)
    Dim iRow As Integer
    Dim iCol As Integer
    Dim myTable As DataTable
    ' Assumes the DataGrid is bound to a DataTable.
    myTable = CType(DataGrid1.DataSource, DataTable)
    For iRow = 0 To myTable.Rows.Count - 1
       For iCol = 0 To myTable.Columns.Count - 1
          Console.WriteLine(myGrid(iRow, iCol))
       Next iCol
    Next iRow
 End Sub

備註

設定此屬性會將 的位置 DataView 變更為指定的資料列。