私が共有したい次の解決策を考え出しました。
this.Refresh();
:
/// <summary>
/// Overrided method to tab only in a DataGridComboBox column.
/// </summary>
/// <param name="msg">A Message, passed by reference, that represents the window message to process.</param>
/// <param name="keyData">One of the Keys values that represents the key to process.</param>
/// <returns>True if the character was processed by the control. Otherwise, False.</returns>
protected override bool ProcessCmdKey(ref Message msg, Keys keyData)
{
bool TabIsPressed = ((keyData == Keys.Tab) || (keyData == (Keys.Shift | Keys.Tab))); // Checks if Tab or Shift/Tab is pressed.
Control CurrentControl = this.ActiveControl; // Gets the currently focused control.
bool IsDataGridViewControl = (CurrentControl.GetType() == typeof(DataGridView)); // Checks if the currently focused control is a DataGridView control.
bool IsComboBoxEditingControl = (CurrentControl.GetType() == typeof(DataGridViewComboBoxEditingControl)); // Checks if the currently focused control is a DataGridViewComboBoxEditingControl control.
bool DataGridViewIsValid = (IsDataGridViewControl && dataGridViewDMSSettings.Rows.Count > -1); // Checks if a DataGridView control is focused is not empty.
if
(
TabIsPressed // If a Tab key is pressed.
&& (
DataGridViewIsValid // And a DataGridView is focused and valid.
|| IsComboBoxEditingControl // Or a DataGridViewComboBoxEditingControl is focused.
)
)
{
int CurrentRowIndex = dataGridViewDMSSettings.CurrentCell.RowIndex; // Gets the current rows index.
int LastRowIndex = dataGridViewDMSSettings.RowCount - 1; // Gets the last rows index.
if (IsComboBoxEditingControl) // If a DataGridViewComboBoxEditingControl is focused.
{
((DataGridViewComboBoxEditingControl)CurrentControl).EditingControlDataGridView.EndEdit(); // Ends the editing mode for the control.
}
int NextRowIndex = CurrentRowIndex; // Creates a variable for the next rows index.
switch (keyData) // Switches through the pressed keys.
{
case (Keys.Tab): // If the Tab key is pressed.
if (IsComboBoxEditingControl) // If a DataGridViewComboBoxEditingControl is focused.
{
NextRowIndex++; // Sets the next row index to the next row.
if (NextRowIndex > LastRowIndex) // If next row index is greater than the last row index.
{
NextRowIndex = 0; // Focuses the first row. (Alternatively call "base.ProcessCmdKey(ref msg, keyData)" to exit the DataGridView)
}
}
break;
case (Keys.Shift | Keys.Tab): // If Shift and Tab key is pressed.
NextRowIndex--; // Sets the next row index to the previous row.
if (NextRowIndex < 0) // If previous row index is smaller than the first row index.
{
NextRowIndex = LastRowIndex; // Focuses the last row. (Alternatively call "base.ProcessCmdKey(ref msg, keyData)" to exit the DataGridView)
}
break;
}
dataGridViewDMSSettings.CurrentCell = dataGridViewDMSSettings.Rows[NextRowIndex].Cells["DMSIndex"]; // Sets the focus on the next DataGridViewComboBox.
this.Refresh(); // Rerenders the current form.
return true; // Returns true to the caller.
}
else // If another key (Not a Tab key) is pressed or the currently focused control is not a DataGridView or DataGridViewComboBoxEditing control.
{
return base.ProcessCmdKey(ref msg, keyData); // Performs the standard ProcessCmdKey method.
}
}
このソリューションの唯一のマイナーな問題が出るDataGridComboBoxCellがvisualy少し遅いレンダリングするということです私はすでにと効果を最小化している(あなたはそれが簡単な秒間白回し見ることができます)
しかし、それはなくなっていません。 P.P.フォームの倍音バッファーを有効にしても、この効果は変わりません。
多分、この最後の問題を解決するために私の方法を改善することができます。
代わりにEnterキーを使用してください。 Enterキーを押すと、その列の次のセル(下)が選択されます。 –
私はそれを知っているかもしれませんが、その要件はユーザーから来ています。さらに、Shift + Enterキーを使用して前の行に移動することはできません。 – kami