1
我有一個DataGridview有幾列,其中一列是DataGridViewComboBoxColumn。若要動態更改DataGridViewComboBoxCell顏色(樣式)
這種情況是,當用戶從組合框中選擇一些值(選擇索引> 0)時,所選單元格的整行將顯示爲白色。如果用戶選擇組合框的空值(選定索引爲0),則整行將以黃色顯示,並且此組合框單元應顯示爲紅色。
我能夠實現顯示除了組合框以外的黃色整行。
private void grdCurve_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
//for datatype column
if (grdCurve.CurrentCell.ColumnIndex == DATATYPE_COLUMN_INDEX)
{
// Check box column
ComboBox comboBox = e.Control as ComboBox;
comboBox.SelectedIndexChanged -= new EventHandler(comboBox_SelectedIndexChanged);
comboBox.SelectedIndexChanged += new EventHandler(comboBox_SelectedIndexChanged);
}
}
void comboBox_SelectedIndexChanged(object sender, EventArgs e)
{
if (selectedIndex >= 0)
{
if (!ValidateMnemonic(mnRow, row))
{
MarkInvalidRow(row);
}
else
{
MarkValidRow(row);
}
}
}
private void MarkInvalidRow(DataGridViewRow row)
{
DataGridViewCellStyle style = new DataGridViewCellStyle();
if (m_InvalidRowTable.Count > 0)
{
if (m_InvalidRowTable.ContainsKey(row.Index))
{
int col = Convert.ToInt32(m_InvalidRowTable[row.Index]);
DataGridViewCell cell = row.Cells[col];
MarkInvalidRowColor(row);
style.BackColor = Color.Red;
style.SelectionBackColor = Color.Red;
cell.Style = style;
if (grdCurve.CurrentCell is DataGridViewComboBoxCell)
{
grdCurve.CurrentCell.Style = style;
}
}
else
{
MarkInvalidRowColor(row);
}
}
else
{
MarkInvalidRowColor(row);
}
m_InvalidRowTable.Remove(row.Index);
}
private void grdCurve_CellValueChanged(object sender, DataGridViewCellEventArgs e)
{
//do nothing
}
private void grdCurve_CurrentCellDirtyStateChanged(object sender, EventArgs e)
{
if (grdCurve.CurrentCell is DataGridViewCheckBoxCell)
grdCurve.CommitEdit(DataGridViewDataErrorContexts.Commit);
if (grdCurve.CurrentCell is DataGridViewComboBoxCell && grdCurve.IsCurrentCellDirty)
grdCurve.CommitEdit(DataGridViewDataErrorContexts.Commit);
grdCurve.EndEdit();
}
當我將組合框中的項目更改爲空時,我預計組合框將被標記爲紅色。 但是,它顯示爲白色,當我點擊其他一些單元格時,紅色將在組合框單元格中更新。
請幫忙。
感謝, 普拉薩德