获取 Windows 窗体 DataGridView 控件中选定的单元格、行和列

获取 DataGridView 控件中选中的单元格

• 使用 SelectedCells 属性。

  注意

  使用 AreAllCellsSelected 方法可避免显示可能具有大量数据的单元格。

  Visual Basic

  复制代码

  Private Sub selectedCellsButton_Click( _
      ByVal sender As Object, ByVal e As System.EventArgs) _
      Handles selectedCellsButton.Click
  
      Dim selectedCellCount As Integer = _
          dataGridView1.GetCellCount(DataGridViewElementStates.Selected)
  
      If selectedCellCount > 0 Then
  
          If dataGridView1.AreAllCellsSelected(True) Then
  
              MessageBox.Show("All cells are selected", "Selected Cells")
  
          Else
  
              Dim sb As New System.Text.StringBuilder()
  
              Dim i As Integer
              For i = 0 To selectedCellCount - 1
  
                  sb.Append("Row: ")
                  sb.Append(dataGridView1.SelectedCells(i).RowIndex _
                      .ToString())
                  sb.Append(", Column: ")
                  sb.Append(dataGridView1.SelectedCells(i).ColumnIndex _
                      .ToString())
                  sb.Append(Environment.NewLine)
  
              Next i
  
              sb.Append("Total: " + selectedCellCount.ToString())
              MessageBox.Show(sb.ToString(), "Selected Cells")
  
          End If
  
      End If
  
  End Sub

  C#

  复制代码

  private void selectedCellsButton_Click(object sender, System.EventArgs e)
  {
      Int32 selectedCellCount =
          dataGridView1.GetCellCount(DataGridViewElementStates.Selected);
      if (selectedCellCount > 0)
      {
          if (dataGridView1.AreAllCellsSelected(true))
          {
              MessageBox.Show("All cells are selected", "Selected Cells");
          }
          else
          {
              System.Text.StringBuilder sb =
                  new System.Text.StringBuilder();
  
              for (int i = 0;
                  i < selectedCellCount; i++)
              {
                  sb.Append("Row: ");
                  sb.Append(dataGridView1.SelectedCells[i].RowIndex
                      .ToString());
                  sb.Append(", Column: ");
                  sb.Append(dataGridView1.SelectedCells[i].ColumnIndex
                      .ToString());
                  sb.Append(Environment.NewLine);
              }
  
              sb.Append("Total: " + selectedCellCount.ToString());
              MessageBox.Show(sb.ToString(), "Selected Cells");
          }
      }
  }

获取 DataGridView 控件中选中的行

• 使用 SelectedRows 属性。若要使用户能够选择行，您必须将 SelectionMode 属性设置为 FullRowSelect 或 RowHeaderSelect。

  Visual Basic

  复制代码

  Private Sub selectedRowsButton_Click( _
      ByVal sender As Object, ByVal e As System.EventArgs) _
      Handles selectedRowsButton.Click
  
      Dim selectedRowCount As Integer = _
          dataGridView1.Rows.GetRowCount(DataGridViewElementStates.Selected)
  
      If selectedRowCount > 0 Then
  
          Dim sb As New System.Text.StringBuilder()
  
          Dim i As Integer
          For i = 0 To selectedRowCount - 1
  
              sb.Append("Row: ")
              sb.Append(dataGridView1.SelectedRows(i).Index.ToString())
              sb.Append(Environment.NewLine)
  
          Next i
  
          sb.Append("Total: " + selectedRowCount.ToString())
          MessageBox.Show(sb.ToString(), "Selected Rows")
  
      End If
  
  End Sub

  C#

  复制代码

  private void selectedRowsButton_Click(object sender, System.EventArgs e)
  {
      Int32 selectedRowCount =
          dataGridView1.Rows.GetRowCount(DataGridViewElementStates.Selected);
      if (selectedRowCount > 0)
      {
          System.Text.StringBuilder sb = new System.Text.StringBuilder();
  
          for (int i = 0; i < selectedRowCount; i++)
          {
              sb.Append("Row: ");
              sb.Append(dataGridView1.SelectedRows[i].Index.ToString());
              sb.Append(Environment.NewLine);
          }
  
          sb.Append("Total: " + selectedRowCount.ToString());
          MessageBox.Show(sb.ToString(), "Selected Rows");
      }
  }

获取 DataGridView 控件中选中的列

• 使用 SelectedColumns 属性。若要使用户能够选择列，您必须将 SelectionMode 属性设置为 FullColumnSelect 或 ColumnHeaderSelect。

  Visual Basic

  复制代码

  Private Sub selectedColumnsButton_Click( _
      ByVal sender As Object, ByVal e As System.EventArgs) _
      Handles selectedColumnsButton.Click
  
      Dim selectedColumnCount As Integer = dataGridView1.Columns _
          .GetColumnCount(DataGridViewElementStates.Selected)
  
      If selectedColumnCount > 0 Then
  
          Dim sb As New System.Text.StringBuilder()
  
          Dim i As Integer
          For i = 0 To selectedColumnCount - 1
  
              sb.Append("Column: ")
              sb.Append(dataGridView1.SelectedColumns(i).Index.ToString())
              sb.Append(Environment.NewLine)
  
          Next i
  
          sb.Append("Total: " + selectedColumnCount.ToString())
          MessageBox.Show(sb.ToString(), "Selected Columns")
  
      End If
  
  End Sub

  C#

  复制代码

  private void selectedColumnsButton_Click(object sender, System.EventArgs e)
  {
      Int32 selectedColumnCount = dataGridView1.Columns
          .GetColumnCount(DataGridViewElementStates.Selected);
      if (selectedColumnCount > 0)
      {
          System.Text.StringBuilder sb = new System.Text.StringBuilder();
  
          for (int i = 0; i < selectedColumnCount; i++)
          {
              sb.Append("Column: ");
              sb.Append(dataGridView1.SelectedColumns[i].Index
                  .ToString());
              sb.Append(Environment.NewLine);
          }
  
          sb.Append("Total: " + selectedColumnCount.ToString());
          MessageBox.Show(sb.ToString(), "Selected Columns");
      }
  }

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