public override int RowCount { get; }

Public Overrides ReadOnly Property RowCount As Integer

private void gridView_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e) {
    if (e.Control && e.KeyCode == System.Windows.Forms.Keys.V) {
        var text = Clipboard.GetText();
        for (int i = 0; i < gridView.RowCount; i++) {
            if (gridView.IsDataRow(i)) {
                this.gridView.SetRowCellValue(i, "TargetColumn", text);
                e.Handled = true;
            }
        }
    }
}

'INSTANT VB NOTE: This code snippet uses implicit typing. You will need to set 'Option Infer On' in the VB file or set 'Option Infer' at the project level.

Private Sub gridView_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs)
    If e.Control AndAlso e.KeyCode = System.Windows.Forms.Keys.V Then
        Dim text = Clipboard.GetText()
        For i As Integer = 0 To gridView.RowCount - 1
            If gridView.IsDataRow(i) Then
                Me.gridView.SetRowCellValue(i, "TargetColumn", text)
                e.Handled = True
            End If
        Next i
    End If
End Sub

foreach(string val in values) {
    for(int i = 0; i < view.RowCount; i++) {
        if(view.GetRowCellValue(i, fieldName).ToString() == val)

int masterRowHandle = _GridView.SourceRowHandle;
if (_GridView.GetSelectedRows().Length == _GridView.RowCount)
{

dTable.Columns.Add(c.FieldName, c.ColumnType);
for (int r = 0; r < gridView.RowCount; r++)
{

For Each val As String In values
    For i As Integer = 0 To view.RowCount - 1
        If Equals(view.GetRowCellValue(i, fieldName).ToString(), val) Then selection.Add(i)

Dim masterRowHandle As Integer = _GridView.SourceRowHandle
If _GridView.GetSelectedRows().Length = _GridView.RowCount Then
    TryCast(_GridView.ParentView, GridView).SelectRow(masterRowHandle)

Next c
For r As Integer = 0 To gridView.RowCount - 1