DataGridView DataGridViewCheckBoxColumn 实现禁用效果，因为默认的不带禁用效果

标签：DataGridViewCheckBoxColumn cellBounds DataGridViewPaintParts 禁用 DataGridView Dat

/// <summary>
/// DataGridViewDisableCheckBoxColumn 
/// 自定义disablecheckbox列 实现禁用效果
/// </summary>
public class DataGridViewDisableCheckBoxColumn : DataGridViewCheckBoxColumn
{
    public DataGridViewDisableCheckBoxColumn()
    {
        this.CellTemplate = new DataGridViewDisableCheckBoxCell();
    }
}

public class DataGridViewDisableCheckBoxCell : DataGridViewCheckBoxCell
{
    private bool enabledValue;

    public bool Enabled
    {
        get
        {
            return enabledValue;
        }
        set
        {
            enabledValue = value;
        }
    }

    public override object Clone()
    {
        DataGridViewDisableCheckBoxCell cell =
            (DataGridViewDisableCheckBoxCell)base.Clone();
        cell.Enabled = this.Enabled;
        return cell;
    }

    public DataGridViewDisableCheckBoxCell()
    {
        this.enabledValue = true;
    }

    protected override void Paint(Graphics graphics,
        Rectangle clipBounds, Rectangle cellBounds, int rowIndex,
        DataGridViewElementStates elementState, object value,
        object formattedValue, string errorText,
        DataGridViewCellStyle cellStyle,
        DataGridViewAdvancedBorderStyle advancedBorderStyle,
        DataGridViewPaintParts paintParts)
    {
        if (!this.enabledValue)
        {
            if ((paintParts & DataGridViewPaintParts.Background) ==
                DataGridViewPaintParts.Background)
            {
                SolidBrush cellBackground =
                    new SolidBrush(cellStyle.BackColor);
                graphics.FillRectangle(cellBackground, cellBounds);
                cellBackground.Dispose();
            }

            if ((paintParts & DataGridViewPaintParts.Border) ==
                DataGridViewPaintParts.Border)
            {
                PaintBorder(graphics, clipBounds, cellBounds, cellStyle,
                    advancedBorderStyle);
            }

            CheckBoxState state = value != null && (bool)value ?
                CheckBoxState.CheckedDisabled : CheckBoxState.UncheckedDisabled;
            Size size = CheckBoxRenderer.GetGlyphSize(graphics, state);
            Point center = new Point(cellBounds.X, cellBounds.Y);
            center.X += (cellBounds.Width - size.Width) / 2;
            center.Y += (cellBounds.Height - size.Height) / 2;

            CheckBoxRenderer.DrawCheckBox(graphics, center, state);
        }
        else
        {
            base.Paint(graphics, clipBounds, cellBounds, rowIndex,
                elementState, value, formattedValue, errorText,
                cellStyle, advancedBorderStyle, paintParts);
        }
    }
}

　使用：
　private void dgvView_CellFormatting(object sender, DataGridViewCellFormattingEventArgs e)

{

    if (e.RowIndex < 0 || e.ColumnIndex > colSelect.Index) { return; }

 

    DataRow dr = (dgvView.Rows[e.RowIndex].DataBoundItem as DataRowView)?.Row;

    if (dr != null)

    {

        string status= DataFun.ConvertToStringByDB(dr["status"]);

 

        if (status!= 'Doing')

        {

            DataGridViewDisableCheckBoxCell checkCell = (DataGridViewDisableCheckBoxCell)dgvView.Rows[e.RowIndex].Cells[colSelect.Index];

            if (checkCell == null) { return; }

 

            checkCell.Enabled = false;

            checkCell.ReadOnly = true;

        }

    }

}

 

 

/// <summary>/// DataGridViewDisableCheckBoxColumn /// 自定义disablecheckbox列 实现禁用效果/// </summary>/* Started by AICoder, pid:pe484e7c5fz4fdf14e3d08f8e0bfa38107705bcf */public class DataGridViewDisableCheckBoxColumn : DataGridViewCheckBoxColumn{    public DataGridViewDisableCheckBoxColumn()    {        this.CellTemplate = new DataGridViewDisableCheckBoxCell();    }}
public class DataGridViewDisableCheckBoxCell : DataGridViewCheckBoxCell{    private bool enabledValue;
    public bool Enabled    {        get        {            return enabledValue;        }        set        {            enabledValue = value;        }    }
    public override object Clone()    {        DataGridViewDisableCheckBoxCell cell =            (DataGridViewDisableCheckBoxCell)base.Clone();        cell.Enabled = this.Enabled;        return cell;    }
    public DataGridViewDisableCheckBoxCell()    {        this.enabledValue = true;    }
    protected override void Paint(Graphics graphics,        Rectangle clipBounds, Rectangle cellBounds, int rowIndex,        DataGridViewElementStates elementState, object value,        object formattedValue, string errorText,        DataGridViewCellStyle cellStyle,        DataGridViewAdvancedBorderStyle advancedBorderStyle,        DataGridViewPaintParts paintParts)    {        if (!this.enabledValue)        {            if ((paintParts & DataGridViewPaintParts.Background) ==                DataGridViewPaintParts.Background)            {                SolidBrush cellBackground =                    new SolidBrush(cellStyle.BackColor);                graphics.FillRectangle(cellBackground, cellBounds);                cellBackground.Dispose();            }
            if ((paintParts & DataGridViewPaintParts.Border) ==                DataGridViewPaintParts.Border)            {                PaintBorder(graphics, clipBounds, cellBounds, cellStyle,                    advancedBorderStyle);            }
            CheckBoxState state = value != null && (bool)value ?                CheckBoxState.CheckedDisabled : CheckBoxState.UncheckedDisabled;            Size size = CheckBoxRenderer.GetGlyphSize(graphics, state);            Point center = new Point(cellBounds.X, cellBounds.Y);            center.X += (cellBounds.Width - size.Width) / 2;            center.Y += (cellBounds.Height - size.Height) / 2;
            CheckBoxRenderer.DrawCheckBox(graphics, center, state);        }        else        {            base.Paint(graphics, clipBounds, cellBounds, rowIndex,                elementState, value, formattedValue, errorText,                cellStyle, advancedBorderStyle, paintParts);        }    }}

标签：DataGridViewCheckBoxColumn,cellBounds,DataGridViewPaintParts,禁用,DataGridView,Dat
From： https://www.cnblogs.com/Wilson6/p/18426282