学习之路二十一：设置DataGridView中的按钮为Disable

这个问题折腾很久了，网上找了半天了，结果问一个同事，同事给了一个地址让我看看，最后根据上面的介绍做好了，再次记录一下，o(∩_∩)o 哈哈

地址如下：http://msdn.microsoft.com/en-us/library/ms171619.aspx?cs-save-lang=1&cs-lang=csharp#code-snippet-1

代码如下：

    public class DataGridViewDisableButtonColumn : DataGridViewButtonColumn
    {
        public DataGridViewDisableButtonColumn()
        {
            this.CellTemplate = new DataGridViewDisableButtonCell();
        }
    }


    public class DataGridViewDisableButtonCell : DataGridViewButtonCell
    {
        private bool enabledValue;

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

        public string CommadText { get; set; }

        // Override the Clone method so that the Enabled property is copied. 
        public override object Clone()
        {
            DataGridViewDisableButtonCell cell = (DataGridViewDisableButtonCell)base.Clone();
            cell.Enabled = this.Enabled;
            return cell;
        }

        // By default, enable the button cell. 
        public DataGridViewDisableButtonCell()
        {
            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)
            {
                // Draw the cell background, if specified. 
                if ((paintParts & DataGridViewPaintParts.Background) == DataGridViewPaintParts.Background)
                {
                    SolidBrush cellBackground = new SolidBrush(cellStyle.BackColor);
                    graphics.FillRectangle(cellBackground, cellBounds);
                    cellBackground.Dispose();
                }

                // Draw the cell borders, if specified. 
                if ((paintParts & DataGridViewPaintParts.Border) == DataGridViewPaintParts.Border)
                {
                    PaintBorder(graphics, clipBounds, cellBounds, cellStyle, advancedBorderStyle);
                }

                // Calculate the area in which to draw the button.
                Rectangle buttonArea = cellBounds;
                Rectangle buttonAdjustment = this.BorderWidths(advancedBorderStyle);
                buttonArea.X += buttonAdjustment.X;
                buttonArea.Y += buttonAdjustment.Y;
                buttonArea.Height -= buttonAdjustment.Height;
                buttonArea.Width -= buttonAdjustment.Width;

                // Draw the disabled button.                
                ButtonRenderer.DrawButton(graphics, buttonArea, PushButtonState.Disabled);

                // Draw the disabled button text.  
                if (this.FormattedValue is String)
                {
                    TextRenderer.DrawText(graphics, (string)this.FormattedValue, this.DataGridView.Font, buttonArea, SystemColors.GrayText);
                }
            }
            else
            {
                // The button cell is enabled, so let the base class  
                // handle the painting. 
                base.Paint(graphics, clipBounds, cellBounds, rowIndex, elementState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
            }
        }
    }

在此记录一下！

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