/// <summary>
/// 创建DataGridView的ComboBox列
/// </summary>
/// <param name="_dgv">要创建列的DataGridView</param>
/// <param name="_alignment">设置列的对齐方式</param>
/// <param name="_columnName">列名</param>
/// <param name="_headerText">标题名</param>
/// <param name="_dataPropertyName">绑定数据源的字段名称</param>
/// <param name="_toolTipText">TipText提示</param>
/// <param name="_readOnly">设置列是否只读，true 只读，false 读写</param>
/// <param name="_visible">设置列是否可见，true 显示，false 隐藏</param>
/// <param name="_cboDataSource">绑定ComboBox的数据源</param>
/// <param name="_displayMember">用于显示的字段名</param>
/// <param name="_valueMember">绑定Value的字段名</param>
/// <param name="_maxDropDownItems">设置显示最大的下拉项条数</param>
/// <param name="_cboDisplayStyle">设置显示类型</param>
/// <param name="_notEmpty">设置列是否为必填列，true 必填，false 非必填</param>
/// <param name="_backColor">设置列的背景色，当_notEmpty为true时，此项为必需值，为false，此项可以为Color.Empty</param>
/// <param name="_columnState">装载DataGridView可写可读、只读列的数据字典</param>
public static void InitDgvComboBoxColumn(DataGridView _dgv,
DataGridViewContentAlignment _alignment, string _columnName, string _headerText,
string _dataPropertyName, string _toolTipText, bool _readOnly, bool _visible,
DataTable _cboDataSource, string _displayMember, string _valueMember,
int _maxDropDownItems, DataGridViewComboBoxDisplayStyle _cboDisplayStyle,
bool _notEmpty, Color _backColor, ref Dictionary <string, bool> _columnState)
{
DataGridViewComboBoxColumn comboBoxCol = new DataGridViewComboBoxColumn();
comboBoxCol.HeaderCell.Style.Alignment = _alignment == 0 ? DataGridViewContentAlignment.MiddleLeft : _alignment;
comboBoxCol.Name = _columnName;
comboBoxCol.HeaderText = _headerText;
comboBoxCol.DataPropertyName = _dataPropertyName;
comboBoxCol.ToolTipText = _toolTipText;
comboBoxCol.Visible = _visible;
comboBoxCol.ReadOnly = _readOnly;
comboBoxCol.DataSource = _cboDataSource;
comboBoxCol.DisplayMember = _displayMember;
comboBoxCol.ValueMember = _valueMember;
comboBoxCol.MaxDropDownItems = _maxDropDownItems;
comboBoxCol.DisplayStyle = _cboDisplayStyle;
comboBoxCol.AutoComplete = _cboDisplayStyle == DataGridViewComboBoxDisplayStyle.ComboBox ? true : false;
if (_notEmpty == true)
{
comboBoxCol.DefaultCellStyle.BackColor = _backColor;
}
_columnState.Add(_columnName, _readOnly);
_dgv.Columns.Add(comboBoxCol);
}
public DataGridViewComboBoxColumn ()
{
CellTemplate = new DataGridViewComboBoxCell();
((DataGridViewComboBoxCell) CellTemplate).OwningColumnTemplate = this;
SortMode = DataGridViewColumnSortMode.NotSortable;
autoComplete = true;
displayStyle = DataGridViewComboBoxDisplayStyle.DropDownButton;
displayStyleForCurrentCellOnly = false;
}
public DataGridViewComboBoxColumn()
{
CellTemplate = new DataGridViewComboBoxCell();
((DataGridViewComboBoxCell)CellTemplate).OwningColumnTemplate = this;
SortMode = DataGridViewColumnSortMode.NotSortable;
autoComplete = true;
displayStyle = DataGridViewComboBoxDisplayStyle.DropDownButton;
displayStyleForCurrentCellOnly = false;
}
//=====================================================================
/// <summary>
/// Constructor
/// </summary>
protected BaseComboBoxCell()
{
maxDropDownItems = 8;
displayStyle = DataGridViewComboBoxDisplayStyle.DropDownButton;
flatStyle = FlatStyle.Standard;
displayMember = valueMember = String.Empty;
miParseFormattedValueInternal = base.GetType().GetMethod("ParseFormattedValueInternal",
BindingFlags.NonPublic | BindingFlags.Instance);
}
public DataGridViewComboBoxCell () : base() {
autoComplete = true;
dataSource = null;
displayStyle = DataGridViewComboBoxDisplayStyle.DropDownButton;
displayStyleForCurrentCellOnly = false;
dropDownWidth = 1;
flatStyle = FlatStyle.Standard;
items = new ObjectCollection(this);
maxDropDownItems = 8;
sorted = false;
owningColumnTemlate = null;
}
public DataGridViewComboBoxCell() : base()
{
autoComplete = true;
dataSource = null;
displayStyle = DataGridViewComboBoxDisplayStyle.DropDownButton;
displayStyleForCurrentCellOnly = false;
dropDownWidth = 1;
flatStyle = FlatStyle.Standard;
items = new ObjectCollection(this);
maxDropDownItems = 8;
sorted = false;
owningColumnTemlate = null;
}
public static void SetColumnComboBox(this DataGridView gv, int colIndex, object dataSource, DataGridViewComboBoxDisplayStyle dispStyle = DataGridViewComboBoxDisplayStyle.DropDownButton)
{
DataGridViewComboBoxColumn col = gv.Columns[colIndex] as DataGridViewComboBoxColumn;
col.ValueMember = "VALUE";
col.DisplayMember = "DISPLAY";
col.DataSource = dataSource;
col.Width = 200;
col.DisplayStyle = dispStyle;
}
public void DataGridViewComboBoxCellAccessibleObject_ControlType_ReturnExpected(DataGridViewComboBoxDisplayStyle displayStyle, bool cellIsEdited, int expectedControlType)
{
using var dataGridView = new DataGridView();
dataGridView.Columns.Add(new DataGridViewComboBoxColumn()
{
DisplayStyle = displayStyle
});
dataGridView.Rows.Add();
dataGridView.CurrentCell = dataGridView.Rows[0].Cells[0];
if (cellIsEdited)
{
dataGridView.BeginEdit(false);
}
int actualPropertyValue = (int)dataGridView.Rows[0].Cells[0].AccessibilityObject.GetPropertyValue(UiaCore.UIA.ControlTypePropertyId);
Assert.Equal(expectedControlType, actualPropertyValue);
}
public void DataGridViewComboBoxCellAccessibleObject_SupportExpandCollapsePattern_ReturnExpected(DataGridViewComboBoxDisplayStyle displayStyle, bool cellIsEdited, bool expectedValue)
{
using var dataGridView = new DataGridView();
dataGridView.Columns.Add(new DataGridViewComboBoxColumn()
{
DisplayStyle = displayStyle
});
dataGridView.Rows.Add();
dataGridView.CurrentCell = dataGridView.Rows[0].Cells[0];
if (cellIsEdited)
{
dataGridView.BeginEdit(false);
}
object actualPropertyValue = dataGridView.Rows[0].Cells[0].AccessibilityObject.GetPropertyValue(UiaCore.UIA.IsExpandCollapsePatternAvailablePropertyId);
Assert.Equal(expectedValue, actualPropertyValue);
}