c# - 覆盖 DataGridViewTextBoxCell 绘制方法

Question

我试图在派生类中覆盖 DataGridViewTextBoxCell 的绘制方法，以便我可以将前景文本缩进一些可变的像素数量。如果调整列的宽度使其总宽度是我的单元格文本的长度加上“缓冲区”缩进，我会喜欢它。有谁知道实现这一目标的方法？下面列出了我蹩脚的实现:

public class MyTextBoxCell : DataGridViewTextBoxCell{ ....
        protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts) {
           clipBounds.Inflate(100, 0);

            DataGridViewPaintParts pp = DataGridViewPaintParts.Background | DataGridViewPaintParts.Border | DataGridViewPaintParts.ContentBackground
                | DataGridViewPaintParts.ErrorIcon;
            base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, pp);            

                string text = formattedValue as string;

//My lame attempt to indent 20 pixels??
                TextRenderer.DrawText(graphics, text, cellStyle.Font, new Point(cellBounds.Location.X + 20, cellBounds.Location.Y), cellStyle.SelectionForeColor ,TextFormatFlags.EndEllipsis);

}

Answer 1

您可以连接到数据 GridView 中的 CellFormattingEvent 并在那里进行格式化。或者，如果您从 DataGridView 继承，您可以只覆盖 OnCellFormatting 方法。代码看起来像这样:

            if (e.ColumnIndex == 1)
            {
                string val = (string)e.Value;
                e.Value = String.Format("   {0}", val);
                e.FormattingApplied = true;
            }

只是一些粗略的代码，但您明白了。