DataGrid.BeginEdit(DataGridColumnStyle, Int32) 方法

定義

命名空間:

System.Windows.Forms

組件:

System.Windows.Forms.dll

嘗試將方格放入允許編輯的狀態中。

public:
 virtual bool BeginEdit(System::Windows::Forms::DataGridColumnStyle ^ gridColumn, int rowNumber);

public bool BeginEdit (System.Windows.Forms.DataGridColumnStyle gridColumn, int rowNumber);

abstract member BeginEdit : System.Windows.Forms.DataGridColumnStyle * int -> bool
override this.BeginEdit : System.Windows.Forms.DataGridColumnStyle * int -> bool

Public Function BeginEdit (gridColumn As DataGridColumnStyle, rowNumber As Integer) As Boolean

參數

gridColumn

DataGridColumnStyle

要編輯的 DataGridColumnStyle。

rowNumber

Int32

要編輯的資料列編號。

傳回

Boolean

如果方法成功，則為 true，否則為 false。

實作

BeginEdit(DataGridColumnStyle, Int32)

範例

下列程式碼範例會 BeginEdit 使用 方法來測試是否可以在變更指定的資料行和資料列之前進行編輯。

private:
   void EditGrid( DataGrid^ dataGrid1 )
   {
      // Get the selected row and column through the CurrentCell.
      int colNum;
      int rowNum;
      colNum = dataGrid1->CurrentCell.ColumnNumber;
      rowNum = dataGrid1->CurrentCell.RowNumber;
      // Get the selected DataGridColumnStyle.
      DataGridColumnStyle^ dgCol;
      dgCol = dataGrid1->TableStyles[ 0 ]->GridColumnStyles[ colNum ];
      // Invoke the BeginEdit method to see if editing can begin.
      if ( dataGrid1->BeginEdit( dgCol, rowNum ) )
      {
         // Edit row value. Get the DataTable and selected row.
         DataTable^ myTable;
         DataRow^ myRow;
         // Assuming the DataGrid is bound to a DataTable.
         myTable = (DataTable^)(dataGrid1->DataSource);
         myRow = myTable->Rows[ rowNum ];
         // Invoke the Row object's BeginEdit method.
         myRow->BeginEdit();
         myRow[ colNum ] = "New Value";
         // You must accept changes on both DataRow and DataTable.
         myRow->AcceptChanges();
         myTable->AcceptChanges();
         dataGrid1->EndEdit( dgCol, rowNum, false );
      }
      else
      {
         Console::WriteLine( "BeginEdit failed" );
      }
   }

private void EditGrid(DataGrid dataGrid1){
    // Get the selected row and column through the CurrentCell.
    int colNum;
    int rowNum;
    colNum = dataGrid1.CurrentCell.ColumnNumber;
    rowNum = dataGrid1.CurrentCell.RowNumber;
    // Get the selected DataGridColumnStyle.
    DataGridColumnStyle dgCol;
    dgCol = dataGrid1.TableStyles[0].GridColumnStyles[colNum];
    // Invoke the BeginEdit method to see if editing can begin.
    if (dataGrid1.BeginEdit(dgCol, rowNum)){
       // Edit row value. Get the DataTable and selected row.
       DataTable myTable;
       DataRow myRow;
       // Assuming the DataGrid is bound to a DataTable.
       myTable = (DataTable) dataGrid1.DataSource;
       myRow = myTable.Rows[rowNum];
       // Invoke the Row object's BeginEdit method.
       myRow.BeginEdit();
       myRow[colNum] = "New Value";
       // You must accept changes on both DataRow and DataTable.
       myRow.AcceptChanges();
       myTable.AcceptChanges();
       dataGrid1.EndEdit(dgCol, rowNum, false);
    }
    else{
      Console.WriteLine("BeginEdit failed");
    }
 }

Private Sub EditGrid(dataGrid1 As DataGrid)
    ' Get the selected row and column through the CurrentCell.
    Dim colNum As Integer
    Dim rowNum As Integer
    colNum = dataGrid1.CurrentCell.ColumnNumber
    rowNum = dataGrid1.CurrentCell.RowNumber
    ' Get the selected DataGridColumnStyle.
    Dim dgCol As DataGridColumnStyle
    dgCol = dataGrid1.TableStyles(0).GridColumnStyles(colNum)
    ' Invoke the BeginEdit method to see if editing can begin.
    If dataGrid1.BeginEdit(dgCol, rowNum) Then
        ' Edit row value. Get the DataTable and selected row.
        Dim myTable As DataTable
        Dim myRow As DataRow
        ' Assuming the DataGrid is bound to a DataTable.
        myTable = CType(dataGrid1.DataSource, DataTable)
        myRow = myTable.Rows(rowNum)
        ' Invoke the Row object's BeginEdit method.
        myRow.BeginEdit()
        myRow(colNum) = "New Value"
        ' You must accept changes on both DataRow and DataTable.
        myRow.AcceptChanges()
        myTable.AcceptChanges()
        dataGrid1.EndEdit(dgCol, rowNum, False)
    Else
        Console.WriteLine("BeginEdit failed")
    End If
End Sub

備註

如果使用者已開始在儲存格中輸入，方格將會拒絕編輯要求。 在此情況下，方法 BeginEdit 會傳回 false 。

另請參閱

• EndEdit(DataGridColumnStyle, Int32, Boolean)